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![Linus Torvalds](/assets/img/avatar_default.png)
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Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull idmapped mounts from Christian Brauner:
"This introduces idmapped mounts which has been in the making for some
time. Simply put, different mounts can expose the same file or
directory with different ownership. This initial implementation comes
with ports for fat, ext4 and with Christoph's port for xfs with more
filesystems being actively worked on by independent people and
maintainers.
Idmapping mounts handle a wide range of long standing use-cases. Here
are just a few:
- Idmapped mounts make it possible to easily share files between
multiple users or multiple machines especially in complex
scenarios. For example, idmapped mounts will be used in the
implementation of portable home directories in
systemd-homed.service(8) where they allow users to move their home
directory to an external storage device and use it on multiple
computers where they are assigned different uids and gids. This
effectively makes it possible to assign random uids and gids at
login time.
- It is possible to share files from the host with unprivileged
containers without having to change ownership permanently through
chown(2).
- It is possible to idmap a container's rootfs and without having to
mangle every file. For example, Chromebooks use it to share the
user's Download folder with their unprivileged containers in their
Linux subsystem.
- It is possible to share files between containers with
non-overlapping idmappings.
- Filesystem that lack a proper concept of ownership such as fat can
use idmapped mounts to implement discretionary access (DAC)
permission checking.
- They allow users to efficiently changing ownership on a per-mount
basis without having to (recursively) chown(2) all files. In
contrast to chown (2) changing ownership of large sets of files is
instantenous with idmapped mounts. This is especially useful when
ownership of a whole root filesystem of a virtual machine or
container is changed. With idmapped mounts a single syscall
mount_setattr syscall will be sufficient to change the ownership of
all files.
- Idmapped mounts always take the current ownership into account as
idmappings specify what a given uid or gid is supposed to be mapped
to. This contrasts with the chown(2) syscall which cannot by itself
take the current ownership of the files it changes into account. It
simply changes the ownership to the specified uid and gid. This is
especially problematic when recursively chown(2)ing a large set of
files which is commong with the aforementioned portable home
directory and container and vm scenario.
- Idmapped mounts allow to change ownership locally, restricting it
to specific mounts, and temporarily as the ownership changes only
apply as long as the mount exists.
Several userspace projects have either already put up patches and
pull-requests for this feature or will do so should you decide to pull
this:
- systemd: In a wide variety of scenarios but especially right away
in their implementation of portable home directories.
https://systemd.io/HOME_DIRECTORY/
- container runtimes: containerd, runC, LXD:To share data between
host and unprivileged containers, unprivileged and privileged
containers, etc. The pull request for idmapped mounts support in
containerd, the default Kubernetes runtime is already up for quite
a while now: https://github.com/containerd/containerd/pull/4734
- The virtio-fs developers and several users have expressed interest
in using this feature with virtual machines once virtio-fs is
ported.
- ChromeOS: Sharing host-directories with unprivileged containers.
I've tightly synced with all those projects and all of those listed
here have also expressed their need/desire for this feature on the
mailing list. For more info on how people use this there's a bunch of
talks about this too. Here's just two recent ones:
https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf
https://fosdem.org/2021/schedule/event/containers_idmap/
This comes with an extensive xfstests suite covering both ext4 and
xfs:
https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts
It covers truncation, creation, opening, xattrs, vfscaps, setid
execution, setgid inheritance and more both with idmapped and
non-idmapped mounts. It already helped to discover an unrelated xfs
setgid inheritance bug which has since been fixed in mainline. It will
be sent for inclusion with the xfstests project should you decide to
merge this.
In order to support per-mount idmappings vfsmounts are marked with
user namespaces. The idmapping of the user namespace will be used to
map the ids of vfs objects when they are accessed through that mount.
By default all vfsmounts are marked with the initial user namespace.
The initial user namespace is used to indicate that a mount is not
idmapped. All operations behave as before and this is verified in the
testsuite.
Based on prior discussions we want to attach the whole user namespace
and not just a dedicated idmapping struct. This allows us to reuse all
the helpers that already exist for dealing with idmappings instead of
introducing a whole new range of helpers. In addition, if we decide in
the future that we are confident enough to enable unprivileged users
to setup idmapped mounts the permission checking can take into account
whether the caller is privileged in the user namespace the mount is
currently marked with.
The user namespace the mount will be marked with can be specified by
passing a file descriptor refering to the user namespace as an
argument to the new mount_setattr() syscall together with the new
MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern
of extensibility.
The following conditions must be met in order to create an idmapped
mount:
- The caller must currently have the CAP_SYS_ADMIN capability in the
user namespace the underlying filesystem has been mounted in.
- The underlying filesystem must support idmapped mounts.
- The mount must not already be idmapped. This also implies that the
idmapping of a mount cannot be altered once it has been idmapped.
- The mount must be a detached/anonymous mount, i.e. it must have
been created by calling open_tree() with the OPEN_TREE_CLONE flag
and it must not already have been visible in the filesystem.
The last two points guarantee easier semantics for userspace and the
kernel and make the implementation significantly simpler.
By default vfsmounts are marked with the initial user namespace and no
behavioral or performance changes are observed.
The manpage with a detailed description can be found here:
1d7b902e28
In order to support idmapped mounts, filesystems need to be changed
and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The
patches to convert individual filesystem are not very large or
complicated overall as can be seen from the included fat, ext4, and
xfs ports. Patches for other filesystems are actively worked on and
will be sent out separately. The xfstestsuite can be used to verify
that port has been done correctly.
The mount_setattr() syscall is motivated independent of the idmapped
mounts patches and it's been around since July 2019. One of the most
valuable features of the new mount api is the ability to perform
mounts based on file descriptors only.
Together with the lookup restrictions available in the openat2()
RESOLVE_* flag namespace which we added in v5.6 this is the first time
we are close to hardened and race-free (e.g. symlinks) mounting and
path resolution.
While userspace has started porting to the new mount api to mount
proper filesystems and create new bind-mounts it is currently not
possible to change mount options of an already existing bind mount in
the new mount api since the mount_setattr() syscall is missing.
With the addition of the mount_setattr() syscall we remove this last
restriction and userspace can now fully port to the new mount api,
covering every use-case the old mount api could. We also add the
crucial ability to recursively change mount options for a whole mount
tree, both removing and adding mount options at the same time. This
syscall has been requested multiple times by various people and
projects.
There is a simple tool available at
https://github.com/brauner/mount-idmapped
that allows to create idmapped mounts so people can play with this
patch series. I'll add support for the regular mount binary should you
decide to pull this in the following weeks:
Here's an example to a simple idmapped mount of another user's home
directory:
u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt
u1001@f2-vm:/$ ls -al /home/ubuntu/
total 28
drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 .
drwxr-xr-x 4 root root 4096 Oct 28 04:00 ..
-rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history
-rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout
-rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc
-rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile
-rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful
-rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ ls -al /mnt/
total 28
drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 .
drwxr-xr-x 29 root root 4096 Oct 28 22:01 ..
-rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history
-rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout
-rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc
-rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile
-rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful
-rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo
u1001@f2-vm:/$ touch /mnt/my-file
u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file
u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file
u1001@f2-vm:/$ ls -al /mnt/my-file
-rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file
u1001@f2-vm:/$ ls -al /home/ubuntu/my-file
-rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file
u1001@f2-vm:/$ getfacl /mnt/my-file
getfacl: Removing leading '/' from absolute path names
# file: mnt/my-file
# owner: u1001
# group: u1001
user::rw-
user:u1001:rwx
group::rw-
mask::rwx
other::r--
u1001@f2-vm:/$ getfacl /home/ubuntu/my-file
getfacl: Removing leading '/' from absolute path names
# file: home/ubuntu/my-file
# owner: ubuntu
# group: ubuntu
user::rw-
user:ubuntu:rwx
group::rw-
mask::rwx
other::r--"
* tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits)
xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl
xfs: support idmapped mounts
ext4: support idmapped mounts
fat: handle idmapped mounts
tests: add mount_setattr() selftests
fs: introduce MOUNT_ATTR_IDMAP
fs: add mount_setattr()
fs: add attr_flags_to_mnt_flags helper
fs: split out functions to hold writers
namespace: only take read lock in do_reconfigure_mnt()
mount: make {lock,unlock}_mount_hash() static
namespace: take lock_mount_hash() directly when changing flags
nfs: do not export idmapped mounts
overlayfs: do not mount on top of idmapped mounts
ecryptfs: do not mount on top of idmapped mounts
ima: handle idmapped mounts
apparmor: handle idmapped mounts
fs: make helpers idmap mount aware
exec: handle idmapped mounts
would_dump: handle idmapped mounts
...
4215 lines
135 KiB
C
4215 lines
135 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* fs/f2fs/f2fs.h
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*/
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#ifndef _LINUX_F2FS_H
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#define _LINUX_F2FS_H
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#include <linux/uio.h>
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#include <linux/types.h>
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#include <linux/page-flags.h>
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#include <linux/buffer_head.h>
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#include <linux/slab.h>
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#include <linux/crc32.h>
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#include <linux/magic.h>
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#include <linux/kobject.h>
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/vmalloc.h>
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#include <linux/bio.h>
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#include <linux/blkdev.h>
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#include <linux/quotaops.h>
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#include <linux/part_stat.h>
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#include <crypto/hash.h>
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#include <linux/fscrypt.h>
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#include <linux/fsverity.h>
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|
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#ifdef CONFIG_F2FS_CHECK_FS
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#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
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#else
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#define f2fs_bug_on(sbi, condition) \
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do { \
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if (WARN_ON(condition)) \
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set_sbi_flag(sbi, SBI_NEED_FSCK); \
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} while (0)
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#endif
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|
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enum {
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FAULT_KMALLOC,
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FAULT_KVMALLOC,
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FAULT_PAGE_ALLOC,
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FAULT_PAGE_GET,
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FAULT_ALLOC_NID,
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FAULT_ORPHAN,
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FAULT_BLOCK,
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FAULT_DIR_DEPTH,
|
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FAULT_EVICT_INODE,
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FAULT_TRUNCATE,
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FAULT_READ_IO,
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FAULT_CHECKPOINT,
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FAULT_DISCARD,
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FAULT_WRITE_IO,
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FAULT_MAX,
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};
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|
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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#define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1)
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|
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struct f2fs_fault_info {
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atomic_t inject_ops;
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unsigned int inject_rate;
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unsigned int inject_type;
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};
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|
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extern const char *f2fs_fault_name[FAULT_MAX];
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#define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
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#endif
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|
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/*
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* For mount options
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*/
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#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
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#define F2FS_MOUNT_DISCARD 0x00000004
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#define F2FS_MOUNT_NOHEAP 0x00000008
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#define F2FS_MOUNT_XATTR_USER 0x00000010
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#define F2FS_MOUNT_POSIX_ACL 0x00000020
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#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
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#define F2FS_MOUNT_INLINE_XATTR 0x00000080
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#define F2FS_MOUNT_INLINE_DATA 0x00000100
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#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
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#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
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#define F2FS_MOUNT_NOBARRIER 0x00000800
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#define F2FS_MOUNT_FASTBOOT 0x00001000
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#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
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#define F2FS_MOUNT_DATA_FLUSH 0x00008000
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#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
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#define F2FS_MOUNT_USRQUOTA 0x00080000
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#define F2FS_MOUNT_GRPQUOTA 0x00100000
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#define F2FS_MOUNT_PRJQUOTA 0x00200000
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#define F2FS_MOUNT_QUOTA 0x00400000
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#define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
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#define F2FS_MOUNT_RESERVE_ROOT 0x01000000
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#define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000
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#define F2FS_MOUNT_NORECOVERY 0x04000000
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#define F2FS_MOUNT_ATGC 0x08000000
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#define F2FS_MOUNT_MERGE_CHECKPOINT 0x10000000
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|
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#define F2FS_OPTION(sbi) ((sbi)->mount_opt)
|
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#define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
|
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#define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
|
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#define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
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|
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#define ver_after(a, b) (typecheck(unsigned long long, a) && \
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typecheck(unsigned long long, b) && \
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((long long)((a) - (b)) > 0))
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|
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typedef u32 block_t; /*
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* should not change u32, since it is the on-disk block
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* address format, __le32.
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*/
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typedef u32 nid_t;
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|
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#define COMPRESS_EXT_NUM 16
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|
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struct f2fs_mount_info {
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unsigned int opt;
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int write_io_size_bits; /* Write IO size bits */
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block_t root_reserved_blocks; /* root reserved blocks */
|
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kuid_t s_resuid; /* reserved blocks for uid */
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kgid_t s_resgid; /* reserved blocks for gid */
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int active_logs; /* # of active logs */
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int inline_xattr_size; /* inline xattr size */
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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struct f2fs_fault_info fault_info; /* For fault injection */
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#endif
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#ifdef CONFIG_QUOTA
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/* Names of quota files with journalled quota */
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char *s_qf_names[MAXQUOTAS];
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int s_jquota_fmt; /* Format of quota to use */
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#endif
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/* For which write hints are passed down to block layer */
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int whint_mode;
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int alloc_mode; /* segment allocation policy */
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int fsync_mode; /* fsync policy */
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int fs_mode; /* fs mode: LFS or ADAPTIVE */
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int bggc_mode; /* bggc mode: off, on or sync */
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struct fscrypt_dummy_policy dummy_enc_policy; /* test dummy encryption */
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block_t unusable_cap_perc; /* percentage for cap */
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block_t unusable_cap; /* Amount of space allowed to be
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* unusable when disabling checkpoint
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*/
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/* For compression */
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unsigned char compress_algorithm; /* algorithm type */
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unsigned char compress_log_size; /* cluster log size */
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unsigned char compress_level; /* compress level */
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bool compress_chksum; /* compressed data chksum */
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unsigned char compress_ext_cnt; /* extension count */
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int compress_mode; /* compression mode */
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unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */
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};
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#define F2FS_FEATURE_ENCRYPT 0x0001
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#define F2FS_FEATURE_BLKZONED 0x0002
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#define F2FS_FEATURE_ATOMIC_WRITE 0x0004
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#define F2FS_FEATURE_EXTRA_ATTR 0x0008
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#define F2FS_FEATURE_PRJQUOTA 0x0010
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#define F2FS_FEATURE_INODE_CHKSUM 0x0020
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#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
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#define F2FS_FEATURE_QUOTA_INO 0x0080
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#define F2FS_FEATURE_INODE_CRTIME 0x0100
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#define F2FS_FEATURE_LOST_FOUND 0x0200
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#define F2FS_FEATURE_VERITY 0x0400
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#define F2FS_FEATURE_SB_CHKSUM 0x0800
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#define F2FS_FEATURE_CASEFOLD 0x1000
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#define F2FS_FEATURE_COMPRESSION 0x2000
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#define __F2FS_HAS_FEATURE(raw_super, mask) \
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((raw_super->feature & cpu_to_le32(mask)) != 0)
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#define F2FS_HAS_FEATURE(sbi, mask) __F2FS_HAS_FEATURE(sbi->raw_super, mask)
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#define F2FS_SET_FEATURE(sbi, mask) \
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(sbi->raw_super->feature |= cpu_to_le32(mask))
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#define F2FS_CLEAR_FEATURE(sbi, mask) \
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(sbi->raw_super->feature &= ~cpu_to_le32(mask))
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|
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/*
|
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* Default values for user and/or group using reserved blocks
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|
*/
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#define F2FS_DEF_RESUID 0
|
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#define F2FS_DEF_RESGID 0
|
|
|
|
/*
|
|
* For checkpoint manager
|
|
*/
|
|
enum {
|
|
NAT_BITMAP,
|
|
SIT_BITMAP
|
|
};
|
|
|
|
#define CP_UMOUNT 0x00000001
|
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#define CP_FASTBOOT 0x00000002
|
|
#define CP_SYNC 0x00000004
|
|
#define CP_RECOVERY 0x00000008
|
|
#define CP_DISCARD 0x00000010
|
|
#define CP_TRIMMED 0x00000020
|
|
#define CP_PAUSE 0x00000040
|
|
#define CP_RESIZE 0x00000080
|
|
|
|
#define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
|
|
#define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
|
|
#define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
|
|
#define DEF_MID_DISCARD_ISSUE_TIME 500 /* 500 ms, if device busy */
|
|
#define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
|
|
#define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */
|
|
#define DEF_CP_INTERVAL 60 /* 60 secs */
|
|
#define DEF_IDLE_INTERVAL 5 /* 5 secs */
|
|
#define DEF_DISABLE_INTERVAL 5 /* 5 secs */
|
|
#define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */
|
|
#define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */
|
|
|
|
struct cp_control {
|
|
int reason;
|
|
__u64 trim_start;
|
|
__u64 trim_end;
|
|
__u64 trim_minlen;
|
|
};
|
|
|
|
/*
|
|
* indicate meta/data type
|
|
*/
|
|
enum {
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|
META_CP,
|
|
META_NAT,
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META_SIT,
|
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META_SSA,
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META_MAX,
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META_POR,
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DATA_GENERIC, /* check range only */
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DATA_GENERIC_ENHANCE, /* strong check on range and segment bitmap */
|
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DATA_GENERIC_ENHANCE_READ, /*
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* strong check on range and segment
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* bitmap but no warning due to race
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|
* condition of read on truncated area
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|
* by extent_cache
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|
*/
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META_GENERIC,
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|
};
|
|
|
|
/* for the list of ino */
|
|
enum {
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ORPHAN_INO, /* for orphan ino list */
|
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APPEND_INO, /* for append ino list */
|
|
UPDATE_INO, /* for update ino list */
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TRANS_DIR_INO, /* for trasactions dir ino list */
|
|
FLUSH_INO, /* for multiple device flushing */
|
|
MAX_INO_ENTRY, /* max. list */
|
|
};
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|
|
|
struct ino_entry {
|
|
struct list_head list; /* list head */
|
|
nid_t ino; /* inode number */
|
|
unsigned int dirty_device; /* dirty device bitmap */
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|
};
|
|
|
|
/* for the list of inodes to be GCed */
|
|
struct inode_entry {
|
|
struct list_head list; /* list head */
|
|
struct inode *inode; /* vfs inode pointer */
|
|
};
|
|
|
|
struct fsync_node_entry {
|
|
struct list_head list; /* list head */
|
|
struct page *page; /* warm node page pointer */
|
|
unsigned int seq_id; /* sequence id */
|
|
};
|
|
|
|
struct ckpt_req {
|
|
struct completion wait; /* completion for checkpoint done */
|
|
struct llist_node llnode; /* llist_node to be linked in wait queue */
|
|
int ret; /* return code of checkpoint */
|
|
ktime_t queue_time; /* request queued time */
|
|
};
|
|
|
|
struct ckpt_req_control {
|
|
struct task_struct *f2fs_issue_ckpt; /* checkpoint task */
|
|
int ckpt_thread_ioprio; /* checkpoint merge thread ioprio */
|
|
wait_queue_head_t ckpt_wait_queue; /* waiting queue for wake-up */
|
|
atomic_t issued_ckpt; /* # of actually issued ckpts */
|
|
atomic_t total_ckpt; /* # of total ckpts */
|
|
atomic_t queued_ckpt; /* # of queued ckpts */
|
|
struct llist_head issue_list; /* list for command issue */
|
|
spinlock_t stat_lock; /* lock for below checkpoint time stats */
|
|
unsigned int cur_time; /* cur wait time in msec for currently issued checkpoint */
|
|
unsigned int peak_time; /* peak wait time in msec until now */
|
|
};
|
|
|
|
/* for the bitmap indicate blocks to be discarded */
|
|
struct discard_entry {
|
|
struct list_head list; /* list head */
|
|
block_t start_blkaddr; /* start blockaddr of current segment */
|
|
unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
|
|
};
|
|
|
|
/* default discard granularity of inner discard thread, unit: block count */
|
|
#define DEFAULT_DISCARD_GRANULARITY 16
|
|
|
|
/* max discard pend list number */
|
|
#define MAX_PLIST_NUM 512
|
|
#define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
|
|
(MAX_PLIST_NUM - 1) : ((blk_num) - 1))
|
|
|
|
enum {
|
|
D_PREP, /* initial */
|
|
D_PARTIAL, /* partially submitted */
|
|
D_SUBMIT, /* all submitted */
|
|
D_DONE, /* finished */
|
|
};
|
|
|
|
struct discard_info {
|
|
block_t lstart; /* logical start address */
|
|
block_t len; /* length */
|
|
block_t start; /* actual start address in dev */
|
|
};
|
|
|
|
struct discard_cmd {
|
|
struct rb_node rb_node; /* rb node located in rb-tree */
|
|
union {
|
|
struct {
|
|
block_t lstart; /* logical start address */
|
|
block_t len; /* length */
|
|
block_t start; /* actual start address in dev */
|
|
};
|
|
struct discard_info di; /* discard info */
|
|
|
|
};
|
|
struct list_head list; /* command list */
|
|
struct completion wait; /* compleation */
|
|
struct block_device *bdev; /* bdev */
|
|
unsigned short ref; /* reference count */
|
|
unsigned char state; /* state */
|
|
unsigned char queued; /* queued discard */
|
|
int error; /* bio error */
|
|
spinlock_t lock; /* for state/bio_ref updating */
|
|
unsigned short bio_ref; /* bio reference count */
|
|
};
|
|
|
|
enum {
|
|
DPOLICY_BG,
|
|
DPOLICY_FORCE,
|
|
DPOLICY_FSTRIM,
|
|
DPOLICY_UMOUNT,
|
|
MAX_DPOLICY,
|
|
};
|
|
|
|
struct discard_policy {
|
|
int type; /* type of discard */
|
|
unsigned int min_interval; /* used for candidates exist */
|
|
unsigned int mid_interval; /* used for device busy */
|
|
unsigned int max_interval; /* used for candidates not exist */
|
|
unsigned int max_requests; /* # of discards issued per round */
|
|
unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
|
|
bool io_aware; /* issue discard in idle time */
|
|
bool sync; /* submit discard with REQ_SYNC flag */
|
|
bool ordered; /* issue discard by lba order */
|
|
bool timeout; /* discard timeout for put_super */
|
|
unsigned int granularity; /* discard granularity */
|
|
};
|
|
|
|
struct discard_cmd_control {
|
|
struct task_struct *f2fs_issue_discard; /* discard thread */
|
|
struct list_head entry_list; /* 4KB discard entry list */
|
|
struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
|
|
struct list_head wait_list; /* store on-flushing entries */
|
|
struct list_head fstrim_list; /* in-flight discard from fstrim */
|
|
wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
|
|
unsigned int discard_wake; /* to wake up discard thread */
|
|
struct mutex cmd_lock;
|
|
unsigned int nr_discards; /* # of discards in the list */
|
|
unsigned int max_discards; /* max. discards to be issued */
|
|
unsigned int discard_granularity; /* discard granularity */
|
|
unsigned int undiscard_blks; /* # of undiscard blocks */
|
|
unsigned int next_pos; /* next discard position */
|
|
atomic_t issued_discard; /* # of issued discard */
|
|
atomic_t queued_discard; /* # of queued discard */
|
|
atomic_t discard_cmd_cnt; /* # of cached cmd count */
|
|
struct rb_root_cached root; /* root of discard rb-tree */
|
|
bool rbtree_check; /* config for consistence check */
|
|
};
|
|
|
|
/* for the list of fsync inodes, used only during recovery */
|
|
struct fsync_inode_entry {
|
|
struct list_head list; /* list head */
|
|
struct inode *inode; /* vfs inode pointer */
|
|
block_t blkaddr; /* block address locating the last fsync */
|
|
block_t last_dentry; /* block address locating the last dentry */
|
|
};
|
|
|
|
#define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
|
|
#define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
|
|
|
|
#define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
|
|
#define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
|
|
#define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
|
|
#define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
|
|
|
|
#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
|
|
#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
|
|
|
|
static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
|
|
{
|
|
int before = nats_in_cursum(journal);
|
|
|
|
journal->n_nats = cpu_to_le16(before + i);
|
|
return before;
|
|
}
|
|
|
|
static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
|
|
{
|
|
int before = sits_in_cursum(journal);
|
|
|
|
journal->n_sits = cpu_to_le16(before + i);
|
|
return before;
|
|
}
|
|
|
|
static inline bool __has_cursum_space(struct f2fs_journal *journal,
|
|
int size, int type)
|
|
{
|
|
if (type == NAT_JOURNAL)
|
|
return size <= MAX_NAT_JENTRIES(journal);
|
|
return size <= MAX_SIT_JENTRIES(journal);
|
|
}
|
|
|
|
/* for inline stuff */
|
|
#define DEF_INLINE_RESERVED_SIZE 1
|
|
static inline int get_extra_isize(struct inode *inode);
|
|
static inline int get_inline_xattr_addrs(struct inode *inode);
|
|
#define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
|
|
(CUR_ADDRS_PER_INODE(inode) - \
|
|
get_inline_xattr_addrs(inode) - \
|
|
DEF_INLINE_RESERVED_SIZE))
|
|
|
|
/* for inline dir */
|
|
#define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
|
|
((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
|
|
BITS_PER_BYTE + 1))
|
|
#define INLINE_DENTRY_BITMAP_SIZE(inode) \
|
|
DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
|
|
#define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
|
|
((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
|
|
NR_INLINE_DENTRY(inode) + \
|
|
INLINE_DENTRY_BITMAP_SIZE(inode)))
|
|
|
|
/*
|
|
* For INODE and NODE manager
|
|
*/
|
|
/* for directory operations */
|
|
|
|
struct f2fs_filename {
|
|
/*
|
|
* The filename the user specified. This is NULL for some
|
|
* filesystem-internal operations, e.g. converting an inline directory
|
|
* to a non-inline one, or roll-forward recovering an encrypted dentry.
|
|
*/
|
|
const struct qstr *usr_fname;
|
|
|
|
/*
|
|
* The on-disk filename. For encrypted directories, this is encrypted.
|
|
* This may be NULL for lookups in an encrypted dir without the key.
|
|
*/
|
|
struct fscrypt_str disk_name;
|
|
|
|
/* The dirhash of this filename */
|
|
f2fs_hash_t hash;
|
|
|
|
#ifdef CONFIG_FS_ENCRYPTION
|
|
/*
|
|
* For lookups in encrypted directories: either the buffer backing
|
|
* disk_name, or a buffer that holds the decoded no-key name.
|
|
*/
|
|
struct fscrypt_str crypto_buf;
|
|
#endif
|
|
#ifdef CONFIG_UNICODE
|
|
/*
|
|
* For casefolded directories: the casefolded name, but it's left NULL
|
|
* if the original name is not valid Unicode, if the directory is both
|
|
* casefolded and encrypted and its encryption key is unavailable, or if
|
|
* the filesystem is doing an internal operation where usr_fname is also
|
|
* NULL. In all these cases we fall back to treating the name as an
|
|
* opaque byte sequence.
|
|
*/
|
|
struct fscrypt_str cf_name;
|
|
#endif
|
|
};
|
|
|
|
struct f2fs_dentry_ptr {
|
|
struct inode *inode;
|
|
void *bitmap;
|
|
struct f2fs_dir_entry *dentry;
|
|
__u8 (*filename)[F2FS_SLOT_LEN];
|
|
int max;
|
|
int nr_bitmap;
|
|
};
|
|
|
|
static inline void make_dentry_ptr_block(struct inode *inode,
|
|
struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
|
|
{
|
|
d->inode = inode;
|
|
d->max = NR_DENTRY_IN_BLOCK;
|
|
d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
|
|
d->bitmap = t->dentry_bitmap;
|
|
d->dentry = t->dentry;
|
|
d->filename = t->filename;
|
|
}
|
|
|
|
static inline void make_dentry_ptr_inline(struct inode *inode,
|
|
struct f2fs_dentry_ptr *d, void *t)
|
|
{
|
|
int entry_cnt = NR_INLINE_DENTRY(inode);
|
|
int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
|
|
int reserved_size = INLINE_RESERVED_SIZE(inode);
|
|
|
|
d->inode = inode;
|
|
d->max = entry_cnt;
|
|
d->nr_bitmap = bitmap_size;
|
|
d->bitmap = t;
|
|
d->dentry = t + bitmap_size + reserved_size;
|
|
d->filename = t + bitmap_size + reserved_size +
|
|
SIZE_OF_DIR_ENTRY * entry_cnt;
|
|
}
|
|
|
|
/*
|
|
* XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
|
|
* as its node offset to distinguish from index node blocks.
|
|
* But some bits are used to mark the node block.
|
|
*/
|
|
#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
|
|
>> OFFSET_BIT_SHIFT)
|
|
enum {
|
|
ALLOC_NODE, /* allocate a new node page if needed */
|
|
LOOKUP_NODE, /* look up a node without readahead */
|
|
LOOKUP_NODE_RA, /*
|
|
* look up a node with readahead called
|
|
* by get_data_block.
|
|
*/
|
|
};
|
|
|
|
#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO count */
|
|
|
|
/* congestion wait timeout value, default: 20ms */
|
|
#define DEFAULT_IO_TIMEOUT (msecs_to_jiffies(20))
|
|
|
|
/* maximum retry quota flush count */
|
|
#define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8
|
|
|
|
#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
|
|
|
|
#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
|
|
|
|
/* for in-memory extent cache entry */
|
|
#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
|
|
|
|
/* number of extent info in extent cache we try to shrink */
|
|
#define EXTENT_CACHE_SHRINK_NUMBER 128
|
|
|
|
struct rb_entry {
|
|
struct rb_node rb_node; /* rb node located in rb-tree */
|
|
union {
|
|
struct {
|
|
unsigned int ofs; /* start offset of the entry */
|
|
unsigned int len; /* length of the entry */
|
|
};
|
|
unsigned long long key; /* 64-bits key */
|
|
} __packed;
|
|
};
|
|
|
|
struct extent_info {
|
|
unsigned int fofs; /* start offset in a file */
|
|
unsigned int len; /* length of the extent */
|
|
u32 blk; /* start block address of the extent */
|
|
};
|
|
|
|
struct extent_node {
|
|
struct rb_node rb_node; /* rb node located in rb-tree */
|
|
struct extent_info ei; /* extent info */
|
|
struct list_head list; /* node in global extent list of sbi */
|
|
struct extent_tree *et; /* extent tree pointer */
|
|
};
|
|
|
|
struct extent_tree {
|
|
nid_t ino; /* inode number */
|
|
struct rb_root_cached root; /* root of extent info rb-tree */
|
|
struct extent_node *cached_en; /* recently accessed extent node */
|
|
struct extent_info largest; /* largested extent info */
|
|
struct list_head list; /* to be used by sbi->zombie_list */
|
|
rwlock_t lock; /* protect extent info rb-tree */
|
|
atomic_t node_cnt; /* # of extent node in rb-tree*/
|
|
bool largest_updated; /* largest extent updated */
|
|
};
|
|
|
|
/*
|
|
* This structure is taken from ext4_map_blocks.
|
|
*
|
|
* Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
|
|
*/
|
|
#define F2FS_MAP_NEW (1 << BH_New)
|
|
#define F2FS_MAP_MAPPED (1 << BH_Mapped)
|
|
#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
|
|
#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
|
|
F2FS_MAP_UNWRITTEN)
|
|
|
|
struct f2fs_map_blocks {
|
|
block_t m_pblk;
|
|
block_t m_lblk;
|
|
unsigned int m_len;
|
|
unsigned int m_flags;
|
|
pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
|
|
pgoff_t *m_next_extent; /* point to next possible extent */
|
|
int m_seg_type;
|
|
bool m_may_create; /* indicate it is from write path */
|
|
};
|
|
|
|
/* for flag in get_data_block */
|
|
enum {
|
|
F2FS_GET_BLOCK_DEFAULT,
|
|
F2FS_GET_BLOCK_FIEMAP,
|
|
F2FS_GET_BLOCK_BMAP,
|
|
F2FS_GET_BLOCK_DIO,
|
|
F2FS_GET_BLOCK_PRE_DIO,
|
|
F2FS_GET_BLOCK_PRE_AIO,
|
|
F2FS_GET_BLOCK_PRECACHE,
|
|
};
|
|
|
|
/*
|
|
* i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
|
|
*/
|
|
#define FADVISE_COLD_BIT 0x01
|
|
#define FADVISE_LOST_PINO_BIT 0x02
|
|
#define FADVISE_ENCRYPT_BIT 0x04
|
|
#define FADVISE_ENC_NAME_BIT 0x08
|
|
#define FADVISE_KEEP_SIZE_BIT 0x10
|
|
#define FADVISE_HOT_BIT 0x20
|
|
#define FADVISE_VERITY_BIT 0x40
|
|
|
|
#define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT)
|
|
|
|
#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
|
|
#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
|
|
#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
|
|
#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
|
|
#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
|
|
#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
|
|
#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
|
|
#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
|
|
#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
|
|
#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
|
|
#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
|
|
#define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
|
|
#define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
|
|
#define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT)
|
|
#define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT)
|
|
#define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT)
|
|
#define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT)
|
|
#define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT)
|
|
|
|
#define DEF_DIR_LEVEL 0
|
|
|
|
enum {
|
|
GC_FAILURE_PIN,
|
|
GC_FAILURE_ATOMIC,
|
|
MAX_GC_FAILURE
|
|
};
|
|
|
|
/* used for f2fs_inode_info->flags */
|
|
enum {
|
|
FI_NEW_INODE, /* indicate newly allocated inode */
|
|
FI_DIRTY_INODE, /* indicate inode is dirty or not */
|
|
FI_AUTO_RECOVER, /* indicate inode is recoverable */
|
|
FI_DIRTY_DIR, /* indicate directory has dirty pages */
|
|
FI_INC_LINK, /* need to increment i_nlink */
|
|
FI_ACL_MODE, /* indicate acl mode */
|
|
FI_NO_ALLOC, /* should not allocate any blocks */
|
|
FI_FREE_NID, /* free allocated nide */
|
|
FI_NO_EXTENT, /* not to use the extent cache */
|
|
FI_INLINE_XATTR, /* used for inline xattr */
|
|
FI_INLINE_DATA, /* used for inline data*/
|
|
FI_INLINE_DENTRY, /* used for inline dentry */
|
|
FI_APPEND_WRITE, /* inode has appended data */
|
|
FI_UPDATE_WRITE, /* inode has in-place-update data */
|
|
FI_NEED_IPU, /* used for ipu per file */
|
|
FI_ATOMIC_FILE, /* indicate atomic file */
|
|
FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
|
|
FI_VOLATILE_FILE, /* indicate volatile file */
|
|
FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
|
|
FI_DROP_CACHE, /* drop dirty page cache */
|
|
FI_DATA_EXIST, /* indicate data exists */
|
|
FI_INLINE_DOTS, /* indicate inline dot dentries */
|
|
FI_DO_DEFRAG, /* indicate defragment is running */
|
|
FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
|
|
FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
|
|
FI_HOT_DATA, /* indicate file is hot */
|
|
FI_EXTRA_ATTR, /* indicate file has extra attribute */
|
|
FI_PROJ_INHERIT, /* indicate file inherits projectid */
|
|
FI_PIN_FILE, /* indicate file should not be gced */
|
|
FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
|
|
FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
|
|
FI_COMPRESSED_FILE, /* indicate file's data can be compressed */
|
|
FI_COMPRESS_CORRUPT, /* indicate compressed cluster is corrupted */
|
|
FI_MMAP_FILE, /* indicate file was mmapped */
|
|
FI_ENABLE_COMPRESS, /* enable compression in "user" compression mode */
|
|
FI_MAX, /* max flag, never be used */
|
|
};
|
|
|
|
struct f2fs_inode_info {
|
|
struct inode vfs_inode; /* serve a vfs inode */
|
|
unsigned long i_flags; /* keep an inode flags for ioctl */
|
|
unsigned char i_advise; /* use to give file attribute hints */
|
|
unsigned char i_dir_level; /* use for dentry level for large dir */
|
|
unsigned int i_current_depth; /* only for directory depth */
|
|
/* for gc failure statistic */
|
|
unsigned int i_gc_failures[MAX_GC_FAILURE];
|
|
unsigned int i_pino; /* parent inode number */
|
|
umode_t i_acl_mode; /* keep file acl mode temporarily */
|
|
|
|
/* Use below internally in f2fs*/
|
|
unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags */
|
|
struct rw_semaphore i_sem; /* protect fi info */
|
|
atomic_t dirty_pages; /* # of dirty pages */
|
|
f2fs_hash_t chash; /* hash value of given file name */
|
|
unsigned int clevel; /* maximum level of given file name */
|
|
struct task_struct *task; /* lookup and create consistency */
|
|
struct task_struct *cp_task; /* separate cp/wb IO stats*/
|
|
nid_t i_xattr_nid; /* node id that contains xattrs */
|
|
loff_t last_disk_size; /* lastly written file size */
|
|
spinlock_t i_size_lock; /* protect last_disk_size */
|
|
|
|
#ifdef CONFIG_QUOTA
|
|
struct dquot *i_dquot[MAXQUOTAS];
|
|
|
|
/* quota space reservation, managed internally by quota code */
|
|
qsize_t i_reserved_quota;
|
|
#endif
|
|
struct list_head dirty_list; /* dirty list for dirs and files */
|
|
struct list_head gdirty_list; /* linked in global dirty list */
|
|
struct list_head inmem_ilist; /* list for inmem inodes */
|
|
struct list_head inmem_pages; /* inmemory pages managed by f2fs */
|
|
struct task_struct *inmem_task; /* store inmemory task */
|
|
struct mutex inmem_lock; /* lock for inmemory pages */
|
|
struct extent_tree *extent_tree; /* cached extent_tree entry */
|
|
|
|
/* avoid racing between foreground op and gc */
|
|
struct rw_semaphore i_gc_rwsem[2];
|
|
struct rw_semaphore i_mmap_sem;
|
|
struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
|
|
|
|
int i_extra_isize; /* size of extra space located in i_addr */
|
|
kprojid_t i_projid; /* id for project quota */
|
|
int i_inline_xattr_size; /* inline xattr size */
|
|
struct timespec64 i_crtime; /* inode creation time */
|
|
struct timespec64 i_disk_time[4];/* inode disk times */
|
|
|
|
/* for file compress */
|
|
atomic_t i_compr_blocks; /* # of compressed blocks */
|
|
unsigned char i_compress_algorithm; /* algorithm type */
|
|
unsigned char i_log_cluster_size; /* log of cluster size */
|
|
unsigned char i_compress_level; /* compress level (lz4hc,zstd) */
|
|
unsigned short i_compress_flag; /* compress flag */
|
|
unsigned int i_cluster_size; /* cluster size */
|
|
};
|
|
|
|
static inline void get_extent_info(struct extent_info *ext,
|
|
struct f2fs_extent *i_ext)
|
|
{
|
|
ext->fofs = le32_to_cpu(i_ext->fofs);
|
|
ext->blk = le32_to_cpu(i_ext->blk);
|
|
ext->len = le32_to_cpu(i_ext->len);
|
|
}
|
|
|
|
static inline void set_raw_extent(struct extent_info *ext,
|
|
struct f2fs_extent *i_ext)
|
|
{
|
|
i_ext->fofs = cpu_to_le32(ext->fofs);
|
|
i_ext->blk = cpu_to_le32(ext->blk);
|
|
i_ext->len = cpu_to_le32(ext->len);
|
|
}
|
|
|
|
static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
|
|
u32 blk, unsigned int len)
|
|
{
|
|
ei->fofs = fofs;
|
|
ei->blk = blk;
|
|
ei->len = len;
|
|
}
|
|
|
|
static inline bool __is_discard_mergeable(struct discard_info *back,
|
|
struct discard_info *front, unsigned int max_len)
|
|
{
|
|
return (back->lstart + back->len == front->lstart) &&
|
|
(back->len + front->len <= max_len);
|
|
}
|
|
|
|
static inline bool __is_discard_back_mergeable(struct discard_info *cur,
|
|
struct discard_info *back, unsigned int max_len)
|
|
{
|
|
return __is_discard_mergeable(back, cur, max_len);
|
|
}
|
|
|
|
static inline bool __is_discard_front_mergeable(struct discard_info *cur,
|
|
struct discard_info *front, unsigned int max_len)
|
|
{
|
|
return __is_discard_mergeable(cur, front, max_len);
|
|
}
|
|
|
|
static inline bool __is_extent_mergeable(struct extent_info *back,
|
|
struct extent_info *front)
|
|
{
|
|
return (back->fofs + back->len == front->fofs &&
|
|
back->blk + back->len == front->blk);
|
|
}
|
|
|
|
static inline bool __is_back_mergeable(struct extent_info *cur,
|
|
struct extent_info *back)
|
|
{
|
|
return __is_extent_mergeable(back, cur);
|
|
}
|
|
|
|
static inline bool __is_front_mergeable(struct extent_info *cur,
|
|
struct extent_info *front)
|
|
{
|
|
return __is_extent_mergeable(cur, front);
|
|
}
|
|
|
|
extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
|
|
static inline void __try_update_largest_extent(struct extent_tree *et,
|
|
struct extent_node *en)
|
|
{
|
|
if (en->ei.len > et->largest.len) {
|
|
et->largest = en->ei;
|
|
et->largest_updated = true;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For free nid management
|
|
*/
|
|
enum nid_state {
|
|
FREE_NID, /* newly added to free nid list */
|
|
PREALLOC_NID, /* it is preallocated */
|
|
MAX_NID_STATE,
|
|
};
|
|
|
|
enum nat_state {
|
|
TOTAL_NAT,
|
|
DIRTY_NAT,
|
|
RECLAIMABLE_NAT,
|
|
MAX_NAT_STATE,
|
|
};
|
|
|
|
struct f2fs_nm_info {
|
|
block_t nat_blkaddr; /* base disk address of NAT */
|
|
nid_t max_nid; /* maximum possible node ids */
|
|
nid_t available_nids; /* # of available node ids */
|
|
nid_t next_scan_nid; /* the next nid to be scanned */
|
|
unsigned int ram_thresh; /* control the memory footprint */
|
|
unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
|
|
unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
|
|
|
|
/* NAT cache management */
|
|
struct radix_tree_root nat_root;/* root of the nat entry cache */
|
|
struct radix_tree_root nat_set_root;/* root of the nat set cache */
|
|
struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
|
|
struct list_head nat_entries; /* cached nat entry list (clean) */
|
|
spinlock_t nat_list_lock; /* protect clean nat entry list */
|
|
unsigned int nat_cnt[MAX_NAT_STATE]; /* the # of cached nat entries */
|
|
unsigned int nat_blocks; /* # of nat blocks */
|
|
|
|
/* free node ids management */
|
|
struct radix_tree_root free_nid_root;/* root of the free_nid cache */
|
|
struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
|
|
unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
|
|
spinlock_t nid_list_lock; /* protect nid lists ops */
|
|
struct mutex build_lock; /* lock for build free nids */
|
|
unsigned char **free_nid_bitmap;
|
|
unsigned char *nat_block_bitmap;
|
|
unsigned short *free_nid_count; /* free nid count of NAT block */
|
|
|
|
/* for checkpoint */
|
|
char *nat_bitmap; /* NAT bitmap pointer */
|
|
|
|
unsigned int nat_bits_blocks; /* # of nat bits blocks */
|
|
unsigned char *nat_bits; /* NAT bits blocks */
|
|
unsigned char *full_nat_bits; /* full NAT pages */
|
|
unsigned char *empty_nat_bits; /* empty NAT pages */
|
|
#ifdef CONFIG_F2FS_CHECK_FS
|
|
char *nat_bitmap_mir; /* NAT bitmap mirror */
|
|
#endif
|
|
int bitmap_size; /* bitmap size */
|
|
};
|
|
|
|
/*
|
|
* this structure is used as one of function parameters.
|
|
* all the information are dedicated to a given direct node block determined
|
|
* by the data offset in a file.
|
|
*/
|
|
struct dnode_of_data {
|
|
struct inode *inode; /* vfs inode pointer */
|
|
struct page *inode_page; /* its inode page, NULL is possible */
|
|
struct page *node_page; /* cached direct node page */
|
|
nid_t nid; /* node id of the direct node block */
|
|
unsigned int ofs_in_node; /* data offset in the node page */
|
|
bool inode_page_locked; /* inode page is locked or not */
|
|
bool node_changed; /* is node block changed */
|
|
char cur_level; /* level of hole node page */
|
|
char max_level; /* level of current page located */
|
|
block_t data_blkaddr; /* block address of the node block */
|
|
};
|
|
|
|
static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
|
|
struct page *ipage, struct page *npage, nid_t nid)
|
|
{
|
|
memset(dn, 0, sizeof(*dn));
|
|
dn->inode = inode;
|
|
dn->inode_page = ipage;
|
|
dn->node_page = npage;
|
|
dn->nid = nid;
|
|
}
|
|
|
|
/*
|
|
* For SIT manager
|
|
*
|
|
* By default, there are 6 active log areas across the whole main area.
|
|
* When considering hot and cold data separation to reduce cleaning overhead,
|
|
* we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
|
|
* respectively.
|
|
* In the current design, you should not change the numbers intentionally.
|
|
* Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
|
|
* logs individually according to the underlying devices. (default: 6)
|
|
* Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
|
|
* data and 8 for node logs.
|
|
*/
|
|
#define NR_CURSEG_DATA_TYPE (3)
|
|
#define NR_CURSEG_NODE_TYPE (3)
|
|
#define NR_CURSEG_INMEM_TYPE (2)
|
|
#define NR_CURSEG_PERSIST_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
|
|
#define NR_CURSEG_TYPE (NR_CURSEG_INMEM_TYPE + NR_CURSEG_PERSIST_TYPE)
|
|
|
|
enum {
|
|
CURSEG_HOT_DATA = 0, /* directory entry blocks */
|
|
CURSEG_WARM_DATA, /* data blocks */
|
|
CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
|
|
CURSEG_HOT_NODE, /* direct node blocks of directory files */
|
|
CURSEG_WARM_NODE, /* direct node blocks of normal files */
|
|
CURSEG_COLD_NODE, /* indirect node blocks */
|
|
NR_PERSISTENT_LOG, /* number of persistent log */
|
|
CURSEG_COLD_DATA_PINNED = NR_PERSISTENT_LOG,
|
|
/* pinned file that needs consecutive block address */
|
|
CURSEG_ALL_DATA_ATGC, /* SSR alloctor in hot/warm/cold data area */
|
|
NO_CHECK_TYPE, /* number of persistent & inmem log */
|
|
};
|
|
|
|
struct flush_cmd {
|
|
struct completion wait;
|
|
struct llist_node llnode;
|
|
nid_t ino;
|
|
int ret;
|
|
};
|
|
|
|
struct flush_cmd_control {
|
|
struct task_struct *f2fs_issue_flush; /* flush thread */
|
|
wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
|
|
atomic_t issued_flush; /* # of issued flushes */
|
|
atomic_t queued_flush; /* # of queued flushes */
|
|
struct llist_head issue_list; /* list for command issue */
|
|
struct llist_node *dispatch_list; /* list for command dispatch */
|
|
};
|
|
|
|
struct f2fs_sm_info {
|
|
struct sit_info *sit_info; /* whole segment information */
|
|
struct free_segmap_info *free_info; /* free segment information */
|
|
struct dirty_seglist_info *dirty_info; /* dirty segment information */
|
|
struct curseg_info *curseg_array; /* active segment information */
|
|
|
|
struct rw_semaphore curseg_lock; /* for preventing curseg change */
|
|
|
|
block_t seg0_blkaddr; /* block address of 0'th segment */
|
|
block_t main_blkaddr; /* start block address of main area */
|
|
block_t ssa_blkaddr; /* start block address of SSA area */
|
|
|
|
unsigned int segment_count; /* total # of segments */
|
|
unsigned int main_segments; /* # of segments in main area */
|
|
unsigned int reserved_segments; /* # of reserved segments */
|
|
unsigned int ovp_segments; /* # of overprovision segments */
|
|
|
|
/* a threshold to reclaim prefree segments */
|
|
unsigned int rec_prefree_segments;
|
|
|
|
/* for batched trimming */
|
|
unsigned int trim_sections; /* # of sections to trim */
|
|
|
|
struct list_head sit_entry_set; /* sit entry set list */
|
|
|
|
unsigned int ipu_policy; /* in-place-update policy */
|
|
unsigned int min_ipu_util; /* in-place-update threshold */
|
|
unsigned int min_fsync_blocks; /* threshold for fsync */
|
|
unsigned int min_seq_blocks; /* threshold for sequential blocks */
|
|
unsigned int min_hot_blocks; /* threshold for hot block allocation */
|
|
unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
|
|
|
|
/* for flush command control */
|
|
struct flush_cmd_control *fcc_info;
|
|
|
|
/* for discard command control */
|
|
struct discard_cmd_control *dcc_info;
|
|
};
|
|
|
|
/*
|
|
* For superblock
|
|
*/
|
|
/*
|
|
* COUNT_TYPE for monitoring
|
|
*
|
|
* f2fs monitors the number of several block types such as on-writeback,
|
|
* dirty dentry blocks, dirty node blocks, and dirty meta blocks.
|
|
*/
|
|
#define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
|
|
enum count_type {
|
|
F2FS_DIRTY_DENTS,
|
|
F2FS_DIRTY_DATA,
|
|
F2FS_DIRTY_QDATA,
|
|
F2FS_DIRTY_NODES,
|
|
F2FS_DIRTY_META,
|
|
F2FS_INMEM_PAGES,
|
|
F2FS_DIRTY_IMETA,
|
|
F2FS_WB_CP_DATA,
|
|
F2FS_WB_DATA,
|
|
F2FS_RD_DATA,
|
|
F2FS_RD_NODE,
|
|
F2FS_RD_META,
|
|
F2FS_DIO_WRITE,
|
|
F2FS_DIO_READ,
|
|
NR_COUNT_TYPE,
|
|
};
|
|
|
|
/*
|
|
* The below are the page types of bios used in submit_bio().
|
|
* The available types are:
|
|
* DATA User data pages. It operates as async mode.
|
|
* NODE Node pages. It operates as async mode.
|
|
* META FS metadata pages such as SIT, NAT, CP.
|
|
* NR_PAGE_TYPE The number of page types.
|
|
* META_FLUSH Make sure the previous pages are written
|
|
* with waiting the bio's completion
|
|
* ... Only can be used with META.
|
|
*/
|
|
#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
|
|
enum page_type {
|
|
DATA,
|
|
NODE,
|
|
META,
|
|
NR_PAGE_TYPE,
|
|
META_FLUSH,
|
|
INMEM, /* the below types are used by tracepoints only. */
|
|
INMEM_DROP,
|
|
INMEM_INVALIDATE,
|
|
INMEM_REVOKE,
|
|
IPU,
|
|
OPU,
|
|
};
|
|
|
|
enum temp_type {
|
|
HOT = 0, /* must be zero for meta bio */
|
|
WARM,
|
|
COLD,
|
|
NR_TEMP_TYPE,
|
|
};
|
|
|
|
enum need_lock_type {
|
|
LOCK_REQ = 0,
|
|
LOCK_DONE,
|
|
LOCK_RETRY,
|
|
};
|
|
|
|
enum cp_reason_type {
|
|
CP_NO_NEEDED,
|
|
CP_NON_REGULAR,
|
|
CP_COMPRESSED,
|
|
CP_HARDLINK,
|
|
CP_SB_NEED_CP,
|
|
CP_WRONG_PINO,
|
|
CP_NO_SPC_ROLL,
|
|
CP_NODE_NEED_CP,
|
|
CP_FASTBOOT_MODE,
|
|
CP_SPEC_LOG_NUM,
|
|
CP_RECOVER_DIR,
|
|
};
|
|
|
|
enum iostat_type {
|
|
/* WRITE IO */
|
|
APP_DIRECT_IO, /* app direct write IOs */
|
|
APP_BUFFERED_IO, /* app buffered write IOs */
|
|
APP_WRITE_IO, /* app write IOs */
|
|
APP_MAPPED_IO, /* app mapped IOs */
|
|
FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
|
|
FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
|
|
FS_META_IO, /* meta IOs from kworker/reclaimer */
|
|
FS_GC_DATA_IO, /* data IOs from forground gc */
|
|
FS_GC_NODE_IO, /* node IOs from forground gc */
|
|
FS_CP_DATA_IO, /* data IOs from checkpoint */
|
|
FS_CP_NODE_IO, /* node IOs from checkpoint */
|
|
FS_CP_META_IO, /* meta IOs from checkpoint */
|
|
|
|
/* READ IO */
|
|
APP_DIRECT_READ_IO, /* app direct read IOs */
|
|
APP_BUFFERED_READ_IO, /* app buffered read IOs */
|
|
APP_READ_IO, /* app read IOs */
|
|
APP_MAPPED_READ_IO, /* app mapped read IOs */
|
|
FS_DATA_READ_IO, /* data read IOs */
|
|
FS_GDATA_READ_IO, /* data read IOs from background gc */
|
|
FS_CDATA_READ_IO, /* compressed data read IOs */
|
|
FS_NODE_READ_IO, /* node read IOs */
|
|
FS_META_READ_IO, /* meta read IOs */
|
|
|
|
/* other */
|
|
FS_DISCARD, /* discard */
|
|
NR_IO_TYPE,
|
|
};
|
|
|
|
struct f2fs_io_info {
|
|
struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
|
|
nid_t ino; /* inode number */
|
|
enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
|
|
enum temp_type temp; /* contains HOT/WARM/COLD */
|
|
int op; /* contains REQ_OP_ */
|
|
int op_flags; /* req_flag_bits */
|
|
block_t new_blkaddr; /* new block address to be written */
|
|
block_t old_blkaddr; /* old block address before Cow */
|
|
struct page *page; /* page to be written */
|
|
struct page *encrypted_page; /* encrypted page */
|
|
struct page *compressed_page; /* compressed page */
|
|
struct list_head list; /* serialize IOs */
|
|
bool submitted; /* indicate IO submission */
|
|
int need_lock; /* indicate we need to lock cp_rwsem */
|
|
bool in_list; /* indicate fio is in io_list */
|
|
bool is_por; /* indicate IO is from recovery or not */
|
|
bool retry; /* need to reallocate block address */
|
|
int compr_blocks; /* # of compressed block addresses */
|
|
bool encrypted; /* indicate file is encrypted */
|
|
enum iostat_type io_type; /* io type */
|
|
struct writeback_control *io_wbc; /* writeback control */
|
|
struct bio **bio; /* bio for ipu */
|
|
sector_t *last_block; /* last block number in bio */
|
|
unsigned char version; /* version of the node */
|
|
};
|
|
|
|
struct bio_entry {
|
|
struct bio *bio;
|
|
struct list_head list;
|
|
};
|
|
|
|
#define is_read_io(rw) ((rw) == READ)
|
|
struct f2fs_bio_info {
|
|
struct f2fs_sb_info *sbi; /* f2fs superblock */
|
|
struct bio *bio; /* bios to merge */
|
|
sector_t last_block_in_bio; /* last block number */
|
|
struct f2fs_io_info fio; /* store buffered io info. */
|
|
struct rw_semaphore io_rwsem; /* blocking op for bio */
|
|
spinlock_t io_lock; /* serialize DATA/NODE IOs */
|
|
struct list_head io_list; /* track fios */
|
|
struct list_head bio_list; /* bio entry list head */
|
|
struct rw_semaphore bio_list_lock; /* lock to protect bio entry list */
|
|
};
|
|
|
|
#define FDEV(i) (sbi->devs[i])
|
|
#define RDEV(i) (raw_super->devs[i])
|
|
struct f2fs_dev_info {
|
|
struct block_device *bdev;
|
|
char path[MAX_PATH_LEN];
|
|
unsigned int total_segments;
|
|
block_t start_blk;
|
|
block_t end_blk;
|
|
#ifdef CONFIG_BLK_DEV_ZONED
|
|
unsigned int nr_blkz; /* Total number of zones */
|
|
unsigned long *blkz_seq; /* Bitmap indicating sequential zones */
|
|
block_t *zone_capacity_blocks; /* Array of zone capacity in blks */
|
|
#endif
|
|
};
|
|
|
|
enum inode_type {
|
|
DIR_INODE, /* for dirty dir inode */
|
|
FILE_INODE, /* for dirty regular/symlink inode */
|
|
DIRTY_META, /* for all dirtied inode metadata */
|
|
ATOMIC_FILE, /* for all atomic files */
|
|
NR_INODE_TYPE,
|
|
};
|
|
|
|
/* for inner inode cache management */
|
|
struct inode_management {
|
|
struct radix_tree_root ino_root; /* ino entry array */
|
|
spinlock_t ino_lock; /* for ino entry lock */
|
|
struct list_head ino_list; /* inode list head */
|
|
unsigned long ino_num; /* number of entries */
|
|
};
|
|
|
|
/* for GC_AT */
|
|
struct atgc_management {
|
|
bool atgc_enabled; /* ATGC is enabled or not */
|
|
struct rb_root_cached root; /* root of victim rb-tree */
|
|
struct list_head victim_list; /* linked with all victim entries */
|
|
unsigned int victim_count; /* victim count in rb-tree */
|
|
unsigned int candidate_ratio; /* candidate ratio */
|
|
unsigned int max_candidate_count; /* max candidate count */
|
|
unsigned int age_weight; /* age weight, vblock_weight = 100 - age_weight */
|
|
unsigned long long age_threshold; /* age threshold */
|
|
};
|
|
|
|
/* For s_flag in struct f2fs_sb_info */
|
|
enum {
|
|
SBI_IS_DIRTY, /* dirty flag for checkpoint */
|
|
SBI_IS_CLOSE, /* specify unmounting */
|
|
SBI_NEED_FSCK, /* need fsck.f2fs to fix */
|
|
SBI_POR_DOING, /* recovery is doing or not */
|
|
SBI_NEED_SB_WRITE, /* need to recover superblock */
|
|
SBI_NEED_CP, /* need to checkpoint */
|
|
SBI_IS_SHUTDOWN, /* shutdown by ioctl */
|
|
SBI_IS_RECOVERED, /* recovered orphan/data */
|
|
SBI_CP_DISABLED, /* CP was disabled last mount */
|
|
SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */
|
|
SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */
|
|
SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */
|
|
SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */
|
|
SBI_IS_RESIZEFS, /* resizefs is in process */
|
|
};
|
|
|
|
enum {
|
|
CP_TIME,
|
|
REQ_TIME,
|
|
DISCARD_TIME,
|
|
GC_TIME,
|
|
DISABLE_TIME,
|
|
UMOUNT_DISCARD_TIMEOUT,
|
|
MAX_TIME,
|
|
};
|
|
|
|
enum {
|
|
GC_NORMAL,
|
|
GC_IDLE_CB,
|
|
GC_IDLE_GREEDY,
|
|
GC_IDLE_AT,
|
|
GC_URGENT_HIGH,
|
|
GC_URGENT_LOW,
|
|
};
|
|
|
|
enum {
|
|
BGGC_MODE_ON, /* background gc is on */
|
|
BGGC_MODE_OFF, /* background gc is off */
|
|
BGGC_MODE_SYNC, /*
|
|
* background gc is on, migrating blocks
|
|
* like foreground gc
|
|
*/
|
|
};
|
|
|
|
enum {
|
|
FS_MODE_ADAPTIVE, /* use both lfs/ssr allocation */
|
|
FS_MODE_LFS, /* use lfs allocation only */
|
|
};
|
|
|
|
enum {
|
|
WHINT_MODE_OFF, /* not pass down write hints */
|
|
WHINT_MODE_USER, /* try to pass down hints given by users */
|
|
WHINT_MODE_FS, /* pass down hints with F2FS policy */
|
|
};
|
|
|
|
enum {
|
|
ALLOC_MODE_DEFAULT, /* stay default */
|
|
ALLOC_MODE_REUSE, /* reuse segments as much as possible */
|
|
};
|
|
|
|
enum fsync_mode {
|
|
FSYNC_MODE_POSIX, /* fsync follows posix semantics */
|
|
FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */
|
|
FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */
|
|
};
|
|
|
|
enum {
|
|
COMPR_MODE_FS, /*
|
|
* automatically compress compression
|
|
* enabled files
|
|
*/
|
|
COMPR_MODE_USER, /*
|
|
* automatical compression is disabled.
|
|
* user can control the file compression
|
|
* using ioctls
|
|
*/
|
|
};
|
|
|
|
/*
|
|
* this value is set in page as a private data which indicate that
|
|
* the page is atomically written, and it is in inmem_pages list.
|
|
*/
|
|
#define ATOMIC_WRITTEN_PAGE ((unsigned long)-1)
|
|
#define DUMMY_WRITTEN_PAGE ((unsigned long)-2)
|
|
|
|
#define IS_ATOMIC_WRITTEN_PAGE(page) \
|
|
(page_private(page) == ATOMIC_WRITTEN_PAGE)
|
|
#define IS_DUMMY_WRITTEN_PAGE(page) \
|
|
(page_private(page) == DUMMY_WRITTEN_PAGE)
|
|
|
|
#ifdef CONFIG_F2FS_IO_TRACE
|
|
#define IS_IO_TRACED_PAGE(page) \
|
|
(page_private(page) > 0 && \
|
|
page_private(page) < (unsigned long)PID_MAX_LIMIT)
|
|
#else
|
|
#define IS_IO_TRACED_PAGE(page) (0)
|
|
#endif
|
|
|
|
/* For compression */
|
|
enum compress_algorithm_type {
|
|
COMPRESS_LZO,
|
|
COMPRESS_LZ4,
|
|
COMPRESS_ZSTD,
|
|
COMPRESS_LZORLE,
|
|
COMPRESS_MAX,
|
|
};
|
|
|
|
enum compress_flag {
|
|
COMPRESS_CHKSUM,
|
|
COMPRESS_MAX_FLAG,
|
|
};
|
|
|
|
#define COMPRESS_DATA_RESERVED_SIZE 4
|
|
struct compress_data {
|
|
__le32 clen; /* compressed data size */
|
|
__le32 chksum; /* compressed data chksum */
|
|
__le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */
|
|
u8 cdata[]; /* compressed data */
|
|
};
|
|
|
|
#define COMPRESS_HEADER_SIZE (sizeof(struct compress_data))
|
|
|
|
#define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000
|
|
|
|
#define COMPRESS_LEVEL_OFFSET 8
|
|
|
|
/* compress context */
|
|
struct compress_ctx {
|
|
struct inode *inode; /* inode the context belong to */
|
|
pgoff_t cluster_idx; /* cluster index number */
|
|
unsigned int cluster_size; /* page count in cluster */
|
|
unsigned int log_cluster_size; /* log of cluster size */
|
|
struct page **rpages; /* pages store raw data in cluster */
|
|
unsigned int nr_rpages; /* total page number in rpages */
|
|
struct page **cpages; /* pages store compressed data in cluster */
|
|
unsigned int nr_cpages; /* total page number in cpages */
|
|
void *rbuf; /* virtual mapped address on rpages */
|
|
struct compress_data *cbuf; /* virtual mapped address on cpages */
|
|
size_t rlen; /* valid data length in rbuf */
|
|
size_t clen; /* valid data length in cbuf */
|
|
void *private; /* payload buffer for specified compression algorithm */
|
|
void *private2; /* extra payload buffer */
|
|
};
|
|
|
|
/* compress context for write IO path */
|
|
struct compress_io_ctx {
|
|
u32 magic; /* magic number to indicate page is compressed */
|
|
struct inode *inode; /* inode the context belong to */
|
|
struct page **rpages; /* pages store raw data in cluster */
|
|
unsigned int nr_rpages; /* total page number in rpages */
|
|
atomic_t pending_pages; /* in-flight compressed page count */
|
|
};
|
|
|
|
/* Context for decompressing one cluster on the read IO path */
|
|
struct decompress_io_ctx {
|
|
u32 magic; /* magic number to indicate page is compressed */
|
|
struct inode *inode; /* inode the context belong to */
|
|
pgoff_t cluster_idx; /* cluster index number */
|
|
unsigned int cluster_size; /* page count in cluster */
|
|
unsigned int log_cluster_size; /* log of cluster size */
|
|
struct page **rpages; /* pages store raw data in cluster */
|
|
unsigned int nr_rpages; /* total page number in rpages */
|
|
struct page **cpages; /* pages store compressed data in cluster */
|
|
unsigned int nr_cpages; /* total page number in cpages */
|
|
struct page **tpages; /* temp pages to pad holes in cluster */
|
|
void *rbuf; /* virtual mapped address on rpages */
|
|
struct compress_data *cbuf; /* virtual mapped address on cpages */
|
|
size_t rlen; /* valid data length in rbuf */
|
|
size_t clen; /* valid data length in cbuf */
|
|
|
|
/*
|
|
* The number of compressed pages remaining to be read in this cluster.
|
|
* This is initially nr_cpages. It is decremented by 1 each time a page
|
|
* has been read (or failed to be read). When it reaches 0, the cluster
|
|
* is decompressed (or an error is reported).
|
|
*
|
|
* If an error occurs before all the pages have been submitted for I/O,
|
|
* then this will never reach 0. In this case the I/O submitter is
|
|
* responsible for calling f2fs_decompress_end_io() instead.
|
|
*/
|
|
atomic_t remaining_pages;
|
|
|
|
/*
|
|
* Number of references to this decompress_io_ctx.
|
|
*
|
|
* One reference is held for I/O completion. This reference is dropped
|
|
* after the pagecache pages are updated and unlocked -- either after
|
|
* decompression (and verity if enabled), or after an error.
|
|
*
|
|
* In addition, each compressed page holds a reference while it is in a
|
|
* bio. These references are necessary prevent compressed pages from
|
|
* being freed while they are still in a bio.
|
|
*/
|
|
refcount_t refcnt;
|
|
|
|
bool failed; /* IO error occurred before decompression? */
|
|
bool need_verity; /* need fs-verity verification after decompression? */
|
|
void *private; /* payload buffer for specified decompression algorithm */
|
|
void *private2; /* extra payload buffer */
|
|
struct work_struct verity_work; /* work to verify the decompressed pages */
|
|
};
|
|
|
|
#define NULL_CLUSTER ((unsigned int)(~0))
|
|
#define MIN_COMPRESS_LOG_SIZE 2
|
|
#define MAX_COMPRESS_LOG_SIZE 8
|
|
#define MAX_COMPRESS_WINDOW_SIZE(log_size) ((PAGE_SIZE) << (log_size))
|
|
|
|
struct f2fs_sb_info {
|
|
struct super_block *sb; /* pointer to VFS super block */
|
|
struct proc_dir_entry *s_proc; /* proc entry */
|
|
struct f2fs_super_block *raw_super; /* raw super block pointer */
|
|
struct rw_semaphore sb_lock; /* lock for raw super block */
|
|
int valid_super_block; /* valid super block no */
|
|
unsigned long s_flag; /* flags for sbi */
|
|
struct mutex writepages; /* mutex for writepages() */
|
|
|
|
#ifdef CONFIG_BLK_DEV_ZONED
|
|
unsigned int blocks_per_blkz; /* F2FS blocks per zone */
|
|
unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
|
|
#endif
|
|
|
|
/* for node-related operations */
|
|
struct f2fs_nm_info *nm_info; /* node manager */
|
|
struct inode *node_inode; /* cache node blocks */
|
|
|
|
/* for segment-related operations */
|
|
struct f2fs_sm_info *sm_info; /* segment manager */
|
|
|
|
/* for bio operations */
|
|
struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
|
|
/* keep migration IO order for LFS mode */
|
|
struct rw_semaphore io_order_lock;
|
|
mempool_t *write_io_dummy; /* Dummy pages */
|
|
|
|
/* for checkpoint */
|
|
struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
|
|
int cur_cp_pack; /* remain current cp pack */
|
|
spinlock_t cp_lock; /* for flag in ckpt */
|
|
struct inode *meta_inode; /* cache meta blocks */
|
|
struct rw_semaphore cp_global_sem; /* checkpoint procedure lock */
|
|
struct rw_semaphore cp_rwsem; /* blocking FS operations */
|
|
struct rw_semaphore node_write; /* locking node writes */
|
|
struct rw_semaphore node_change; /* locking node change */
|
|
wait_queue_head_t cp_wait;
|
|
unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
|
|
long interval_time[MAX_TIME]; /* to store thresholds */
|
|
struct ckpt_req_control cprc_info; /* for checkpoint request control */
|
|
|
|
struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
|
|
|
|
spinlock_t fsync_node_lock; /* for node entry lock */
|
|
struct list_head fsync_node_list; /* node list head */
|
|
unsigned int fsync_seg_id; /* sequence id */
|
|
unsigned int fsync_node_num; /* number of node entries */
|
|
|
|
/* for orphan inode, use 0'th array */
|
|
unsigned int max_orphans; /* max orphan inodes */
|
|
|
|
/* for inode management */
|
|
struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
|
|
spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
|
|
struct mutex flush_lock; /* for flush exclusion */
|
|
|
|
/* for extent tree cache */
|
|
struct radix_tree_root extent_tree_root;/* cache extent cache entries */
|
|
struct mutex extent_tree_lock; /* locking extent radix tree */
|
|
struct list_head extent_list; /* lru list for shrinker */
|
|
spinlock_t extent_lock; /* locking extent lru list */
|
|
atomic_t total_ext_tree; /* extent tree count */
|
|
struct list_head zombie_list; /* extent zombie tree list */
|
|
atomic_t total_zombie_tree; /* extent zombie tree count */
|
|
atomic_t total_ext_node; /* extent info count */
|
|
|
|
/* basic filesystem units */
|
|
unsigned int log_sectors_per_block; /* log2 sectors per block */
|
|
unsigned int log_blocksize; /* log2 block size */
|
|
unsigned int blocksize; /* block size */
|
|
unsigned int root_ino_num; /* root inode number*/
|
|
unsigned int node_ino_num; /* node inode number*/
|
|
unsigned int meta_ino_num; /* meta inode number*/
|
|
unsigned int log_blocks_per_seg; /* log2 blocks per segment */
|
|
unsigned int blocks_per_seg; /* blocks per segment */
|
|
unsigned int segs_per_sec; /* segments per section */
|
|
unsigned int secs_per_zone; /* sections per zone */
|
|
unsigned int total_sections; /* total section count */
|
|
unsigned int total_node_count; /* total node block count */
|
|
unsigned int total_valid_node_count; /* valid node block count */
|
|
int dir_level; /* directory level */
|
|
int readdir_ra; /* readahead inode in readdir */
|
|
u64 max_io_bytes; /* max io bytes to merge IOs */
|
|
|
|
block_t user_block_count; /* # of user blocks */
|
|
block_t total_valid_block_count; /* # of valid blocks */
|
|
block_t discard_blks; /* discard command candidats */
|
|
block_t last_valid_block_count; /* for recovery */
|
|
block_t reserved_blocks; /* configurable reserved blocks */
|
|
block_t current_reserved_blocks; /* current reserved blocks */
|
|
|
|
/* Additional tracking for no checkpoint mode */
|
|
block_t unusable_block_count; /* # of blocks saved by last cp */
|
|
|
|
unsigned int nquota_files; /* # of quota sysfile */
|
|
struct rw_semaphore quota_sem; /* blocking cp for flags */
|
|
|
|
/* # of pages, see count_type */
|
|
atomic_t nr_pages[NR_COUNT_TYPE];
|
|
/* # of allocated blocks */
|
|
struct percpu_counter alloc_valid_block_count;
|
|
|
|
/* writeback control */
|
|
atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */
|
|
|
|
/* valid inode count */
|
|
struct percpu_counter total_valid_inode_count;
|
|
|
|
struct f2fs_mount_info mount_opt; /* mount options */
|
|
|
|
/* for cleaning operations */
|
|
struct rw_semaphore gc_lock; /*
|
|
* semaphore for GC, avoid
|
|
* race between GC and GC or CP
|
|
*/
|
|
struct f2fs_gc_kthread *gc_thread; /* GC thread */
|
|
struct atgc_management am; /* atgc management */
|
|
unsigned int cur_victim_sec; /* current victim section num */
|
|
unsigned int gc_mode; /* current GC state */
|
|
unsigned int next_victim_seg[2]; /* next segment in victim section */
|
|
|
|
/* for skip statistic */
|
|
unsigned int atomic_files; /* # of opened atomic file */
|
|
unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */
|
|
unsigned long long skipped_gc_rwsem; /* FG_GC only */
|
|
|
|
/* threshold for gc trials on pinned files */
|
|
u64 gc_pin_file_threshold;
|
|
struct rw_semaphore pin_sem;
|
|
|
|
/* maximum # of trials to find a victim segment for SSR and GC */
|
|
unsigned int max_victim_search;
|
|
/* migration granularity of garbage collection, unit: segment */
|
|
unsigned int migration_granularity;
|
|
|
|
/*
|
|
* for stat information.
|
|
* one is for the LFS mode, and the other is for the SSR mode.
|
|
*/
|
|
#ifdef CONFIG_F2FS_STAT_FS
|
|
struct f2fs_stat_info *stat_info; /* FS status information */
|
|
atomic_t meta_count[META_MAX]; /* # of meta blocks */
|
|
unsigned int segment_count[2]; /* # of allocated segments */
|
|
unsigned int block_count[2]; /* # of allocated blocks */
|
|
atomic_t inplace_count; /* # of inplace update */
|
|
atomic64_t total_hit_ext; /* # of lookup extent cache */
|
|
atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
|
|
atomic64_t read_hit_largest; /* # of hit largest extent node */
|
|
atomic64_t read_hit_cached; /* # of hit cached extent node */
|
|
atomic_t inline_xattr; /* # of inline_xattr inodes */
|
|
atomic_t inline_inode; /* # of inline_data inodes */
|
|
atomic_t inline_dir; /* # of inline_dentry inodes */
|
|
atomic_t compr_inode; /* # of compressed inodes */
|
|
atomic64_t compr_blocks; /* # of compressed blocks */
|
|
atomic_t vw_cnt; /* # of volatile writes */
|
|
atomic_t max_aw_cnt; /* max # of atomic writes */
|
|
atomic_t max_vw_cnt; /* max # of volatile writes */
|
|
unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
|
|
unsigned int other_skip_bggc; /* skip background gc for other reasons */
|
|
unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
|
|
#endif
|
|
spinlock_t stat_lock; /* lock for stat operations */
|
|
|
|
/* For app/fs IO statistics */
|
|
spinlock_t iostat_lock;
|
|
unsigned long long rw_iostat[NR_IO_TYPE];
|
|
unsigned long long prev_rw_iostat[NR_IO_TYPE];
|
|
bool iostat_enable;
|
|
unsigned long iostat_next_period;
|
|
unsigned int iostat_period_ms;
|
|
|
|
/* to attach REQ_META|REQ_FUA flags */
|
|
unsigned int data_io_flag;
|
|
unsigned int node_io_flag;
|
|
|
|
/* For sysfs suppport */
|
|
struct kobject s_kobj; /* /sys/fs/f2fs/<devname> */
|
|
struct completion s_kobj_unregister;
|
|
|
|
struct kobject s_stat_kobj; /* /sys/fs/f2fs/<devname>/stat */
|
|
struct completion s_stat_kobj_unregister;
|
|
|
|
/* For shrinker support */
|
|
struct list_head s_list;
|
|
int s_ndevs; /* number of devices */
|
|
struct f2fs_dev_info *devs; /* for device list */
|
|
unsigned int dirty_device; /* for checkpoint data flush */
|
|
spinlock_t dev_lock; /* protect dirty_device */
|
|
struct mutex umount_mutex;
|
|
unsigned int shrinker_run_no;
|
|
|
|
/* For write statistics */
|
|
u64 sectors_written_start;
|
|
u64 kbytes_written;
|
|
|
|
/* Reference to checksum algorithm driver via cryptoapi */
|
|
struct crypto_shash *s_chksum_driver;
|
|
|
|
/* Precomputed FS UUID checksum for seeding other checksums */
|
|
__u32 s_chksum_seed;
|
|
|
|
struct workqueue_struct *post_read_wq; /* post read workqueue */
|
|
|
|
struct kmem_cache *inline_xattr_slab; /* inline xattr entry */
|
|
unsigned int inline_xattr_slab_size; /* default inline xattr slab size */
|
|
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
|
struct kmem_cache *page_array_slab; /* page array entry */
|
|
unsigned int page_array_slab_size; /* default page array slab size */
|
|
#endif
|
|
};
|
|
|
|
struct f2fs_private_dio {
|
|
struct inode *inode;
|
|
void *orig_private;
|
|
bio_end_io_t *orig_end_io;
|
|
bool write;
|
|
};
|
|
|
|
#ifdef CONFIG_F2FS_FAULT_INJECTION
|
|
#define f2fs_show_injection_info(sbi, type) \
|
|
printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \
|
|
KERN_INFO, sbi->sb->s_id, \
|
|
f2fs_fault_name[type], \
|
|
__func__, __builtin_return_address(0))
|
|
static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
|
|
|
|
if (!ffi->inject_rate)
|
|
return false;
|
|
|
|
if (!IS_FAULT_SET(ffi, type))
|
|
return false;
|
|
|
|
atomic_inc(&ffi->inject_ops);
|
|
if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
|
|
atomic_set(&ffi->inject_ops, 0);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
#else
|
|
#define f2fs_show_injection_info(sbi, type) do { } while (0)
|
|
static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Test if the mounted volume is a multi-device volume.
|
|
* - For a single regular disk volume, sbi->s_ndevs is 0.
|
|
* - For a single zoned disk volume, sbi->s_ndevs is 1.
|
|
* - For a multi-device volume, sbi->s_ndevs is always 2 or more.
|
|
*/
|
|
static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->s_ndevs > 1;
|
|
}
|
|
|
|
static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
unsigned long now = jiffies;
|
|
|
|
sbi->last_time[type] = now;
|
|
|
|
/* DISCARD_TIME and GC_TIME are based on REQ_TIME */
|
|
if (type == REQ_TIME) {
|
|
sbi->last_time[DISCARD_TIME] = now;
|
|
sbi->last_time[GC_TIME] = now;
|
|
}
|
|
}
|
|
|
|
static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
unsigned long interval = sbi->interval_time[type] * HZ;
|
|
|
|
return time_after(jiffies, sbi->last_time[type] + interval);
|
|
}
|
|
|
|
static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
|
|
int type)
|
|
{
|
|
unsigned long interval = sbi->interval_time[type] * HZ;
|
|
unsigned int wait_ms = 0;
|
|
long delta;
|
|
|
|
delta = (sbi->last_time[type] + interval) - jiffies;
|
|
if (delta > 0)
|
|
wait_ms = jiffies_to_msecs(delta);
|
|
|
|
return wait_ms;
|
|
}
|
|
|
|
/*
|
|
* Inline functions
|
|
*/
|
|
static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
|
|
const void *address, unsigned int length)
|
|
{
|
|
struct {
|
|
struct shash_desc shash;
|
|
char ctx[4];
|
|
} desc;
|
|
int err;
|
|
|
|
BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
|
|
|
|
desc.shash.tfm = sbi->s_chksum_driver;
|
|
*(u32 *)desc.ctx = crc;
|
|
|
|
err = crypto_shash_update(&desc.shash, address, length);
|
|
BUG_ON(err);
|
|
|
|
return *(u32 *)desc.ctx;
|
|
}
|
|
|
|
static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
|
|
unsigned int length)
|
|
{
|
|
return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
|
|
}
|
|
|
|
static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
|
|
void *buf, size_t buf_size)
|
|
{
|
|
return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
|
|
}
|
|
|
|
static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
|
|
const void *address, unsigned int length)
|
|
{
|
|
return __f2fs_crc32(sbi, crc, address, length);
|
|
}
|
|
|
|
static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct f2fs_inode_info, vfs_inode);
|
|
}
|
|
|
|
static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
|
|
{
|
|
return sb->s_fs_info;
|
|
}
|
|
|
|
static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
|
|
{
|
|
return F2FS_SB(inode->i_sb);
|
|
}
|
|
|
|
static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
|
|
{
|
|
return F2FS_I_SB(mapping->host);
|
|
}
|
|
|
|
static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
|
|
{
|
|
return F2FS_M_SB(page_file_mapping(page));
|
|
}
|
|
|
|
static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct f2fs_super_block *)(sbi->raw_super);
|
|
}
|
|
|
|
static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct f2fs_checkpoint *)(sbi->ckpt);
|
|
}
|
|
|
|
static inline struct f2fs_node *F2FS_NODE(struct page *page)
|
|
{
|
|
return (struct f2fs_node *)page_address(page);
|
|
}
|
|
|
|
static inline struct f2fs_inode *F2FS_INODE(struct page *page)
|
|
{
|
|
return &((struct f2fs_node *)page_address(page))->i;
|
|
}
|
|
|
|
static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct f2fs_nm_info *)(sbi->nm_info);
|
|
}
|
|
|
|
static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct f2fs_sm_info *)(sbi->sm_info);
|
|
}
|
|
|
|
static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct sit_info *)(SM_I(sbi)->sit_info);
|
|
}
|
|
|
|
static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct free_segmap_info *)(SM_I(sbi)->free_info);
|
|
}
|
|
|
|
static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
|
|
}
|
|
|
|
static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->meta_inode->i_mapping;
|
|
}
|
|
|
|
static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->node_inode->i_mapping;
|
|
}
|
|
|
|
static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
|
|
{
|
|
return test_bit(type, &sbi->s_flag);
|
|
}
|
|
|
|
static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
|
|
{
|
|
set_bit(type, &sbi->s_flag);
|
|
}
|
|
|
|
static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
|
|
{
|
|
clear_bit(type, &sbi->s_flag);
|
|
}
|
|
|
|
static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
|
|
{
|
|
return le64_to_cpu(cp->checkpoint_ver);
|
|
}
|
|
|
|
static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
|
|
{
|
|
if (type < F2FS_MAX_QUOTAS)
|
|
return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
|
|
return 0;
|
|
}
|
|
|
|
static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
|
|
{
|
|
size_t crc_offset = le32_to_cpu(cp->checksum_offset);
|
|
return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
|
|
}
|
|
|
|
static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
|
|
{
|
|
unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
|
|
|
|
return ckpt_flags & f;
|
|
}
|
|
|
|
static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
|
|
{
|
|
return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
|
|
}
|
|
|
|
static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
|
|
{
|
|
unsigned int ckpt_flags;
|
|
|
|
ckpt_flags = le32_to_cpu(cp->ckpt_flags);
|
|
ckpt_flags |= f;
|
|
cp->ckpt_flags = cpu_to_le32(ckpt_flags);
|
|
}
|
|
|
|
static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sbi->cp_lock, flags);
|
|
__set_ckpt_flags(F2FS_CKPT(sbi), f);
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags);
|
|
}
|
|
|
|
static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
|
|
{
|
|
unsigned int ckpt_flags;
|
|
|
|
ckpt_flags = le32_to_cpu(cp->ckpt_flags);
|
|
ckpt_flags &= (~f);
|
|
cp->ckpt_flags = cpu_to_le32(ckpt_flags);
|
|
}
|
|
|
|
static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sbi->cp_lock, flags);
|
|
__clear_ckpt_flags(F2FS_CKPT(sbi), f);
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags);
|
|
}
|
|
|
|
static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char *nat_bits;
|
|
|
|
/*
|
|
* In order to re-enable nat_bits we need to call fsck.f2fs by
|
|
* set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
|
|
* so let's rely on regular fsck or unclean shutdown.
|
|
*/
|
|
|
|
if (lock)
|
|
spin_lock_irqsave(&sbi->cp_lock, flags);
|
|
__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
|
|
nat_bits = NM_I(sbi)->nat_bits;
|
|
NM_I(sbi)->nat_bits = NULL;
|
|
if (lock)
|
|
spin_unlock_irqrestore(&sbi->cp_lock, flags);
|
|
|
|
kvfree(nat_bits);
|
|
}
|
|
|
|
static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
|
|
struct cp_control *cpc)
|
|
{
|
|
bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
|
|
|
|
return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
|
|
}
|
|
|
|
static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
|
|
{
|
|
down_read(&sbi->cp_rwsem);
|
|
}
|
|
|
|
static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
|
|
{
|
|
return down_read_trylock(&sbi->cp_rwsem);
|
|
}
|
|
|
|
static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
|
|
{
|
|
up_read(&sbi->cp_rwsem);
|
|
}
|
|
|
|
static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
|
|
{
|
|
down_write(&sbi->cp_rwsem);
|
|
}
|
|
|
|
static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
|
|
{
|
|
up_write(&sbi->cp_rwsem);
|
|
}
|
|
|
|
static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
|
|
{
|
|
int reason = CP_SYNC;
|
|
|
|
if (test_opt(sbi, FASTBOOT))
|
|
reason = CP_FASTBOOT;
|
|
if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
|
|
reason = CP_UMOUNT;
|
|
return reason;
|
|
}
|
|
|
|
static inline bool __remain_node_summaries(int reason)
|
|
{
|
|
return (reason & (CP_UMOUNT | CP_FASTBOOT));
|
|
}
|
|
|
|
static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
|
|
is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
|
|
}
|
|
|
|
/*
|
|
* Check whether the inode has blocks or not
|
|
*/
|
|
static inline int F2FS_HAS_BLOCKS(struct inode *inode)
|
|
{
|
|
block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
|
|
|
|
return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
|
|
}
|
|
|
|
static inline bool f2fs_has_xattr_block(unsigned int ofs)
|
|
{
|
|
return ofs == XATTR_NODE_OFFSET;
|
|
}
|
|
|
|
static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, bool cap)
|
|
{
|
|
if (!inode)
|
|
return true;
|
|
if (!test_opt(sbi, RESERVE_ROOT))
|
|
return false;
|
|
if (IS_NOQUOTA(inode))
|
|
return true;
|
|
if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
|
|
return true;
|
|
if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
|
|
in_group_p(F2FS_OPTION(sbi).s_resgid))
|
|
return true;
|
|
if (cap && capable(CAP_SYS_RESOURCE))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
|
|
static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, blkcnt_t *count)
|
|
{
|
|
blkcnt_t diff = 0, release = 0;
|
|
block_t avail_user_block_count;
|
|
int ret;
|
|
|
|
ret = dquot_reserve_block(inode, *count);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (time_to_inject(sbi, FAULT_BLOCK)) {
|
|
f2fs_show_injection_info(sbi, FAULT_BLOCK);
|
|
release = *count;
|
|
goto release_quota;
|
|
}
|
|
|
|
/*
|
|
* let's increase this in prior to actual block count change in order
|
|
* for f2fs_sync_file to avoid data races when deciding checkpoint.
|
|
*/
|
|
percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
|
|
|
|
spin_lock(&sbi->stat_lock);
|
|
sbi->total_valid_block_count += (block_t)(*count);
|
|
avail_user_block_count = sbi->user_block_count -
|
|
sbi->current_reserved_blocks;
|
|
|
|
if (!__allow_reserved_blocks(sbi, inode, true))
|
|
avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
|
|
if (avail_user_block_count > sbi->unusable_block_count)
|
|
avail_user_block_count -= sbi->unusable_block_count;
|
|
else
|
|
avail_user_block_count = 0;
|
|
}
|
|
if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
|
|
diff = sbi->total_valid_block_count - avail_user_block_count;
|
|
if (diff > *count)
|
|
diff = *count;
|
|
*count -= diff;
|
|
release = diff;
|
|
sbi->total_valid_block_count -= diff;
|
|
if (!*count) {
|
|
spin_unlock(&sbi->stat_lock);
|
|
goto enospc;
|
|
}
|
|
}
|
|
spin_unlock(&sbi->stat_lock);
|
|
|
|
if (unlikely(release)) {
|
|
percpu_counter_sub(&sbi->alloc_valid_block_count, release);
|
|
dquot_release_reservation_block(inode, release);
|
|
}
|
|
f2fs_i_blocks_write(inode, *count, true, true);
|
|
return 0;
|
|
|
|
enospc:
|
|
percpu_counter_sub(&sbi->alloc_valid_block_count, release);
|
|
release_quota:
|
|
dquot_release_reservation_block(inode, release);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
__printf(2, 3)
|
|
void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
|
|
|
|
#define f2fs_err(sbi, fmt, ...) \
|
|
f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
|
|
#define f2fs_warn(sbi, fmt, ...) \
|
|
f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
|
|
#define f2fs_notice(sbi, fmt, ...) \
|
|
f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
|
|
#define f2fs_info(sbi, fmt, ...) \
|
|
f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
|
|
#define f2fs_debug(sbi, fmt, ...) \
|
|
f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
|
|
|
|
static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
|
|
struct inode *inode,
|
|
block_t count)
|
|
{
|
|
blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
|
|
|
|
spin_lock(&sbi->stat_lock);
|
|
f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
|
|
sbi->total_valid_block_count -= (block_t)count;
|
|
if (sbi->reserved_blocks &&
|
|
sbi->current_reserved_blocks < sbi->reserved_blocks)
|
|
sbi->current_reserved_blocks = min(sbi->reserved_blocks,
|
|
sbi->current_reserved_blocks + count);
|
|
spin_unlock(&sbi->stat_lock);
|
|
if (unlikely(inode->i_blocks < sectors)) {
|
|
f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
|
|
inode->i_ino,
|
|
(unsigned long long)inode->i_blocks,
|
|
(unsigned long long)sectors);
|
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
return;
|
|
}
|
|
f2fs_i_blocks_write(inode, count, false, true);
|
|
}
|
|
|
|
static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
|
|
{
|
|
atomic_inc(&sbi->nr_pages[count_type]);
|
|
|
|
if (count_type == F2FS_DIRTY_DENTS ||
|
|
count_type == F2FS_DIRTY_NODES ||
|
|
count_type == F2FS_DIRTY_META ||
|
|
count_type == F2FS_DIRTY_QDATA ||
|
|
count_type == F2FS_DIRTY_IMETA)
|
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
|
}
|
|
|
|
static inline void inode_inc_dirty_pages(struct inode *inode)
|
|
{
|
|
atomic_inc(&F2FS_I(inode)->dirty_pages);
|
|
inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
|
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
|
|
if (IS_NOQUOTA(inode))
|
|
inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
|
|
}
|
|
|
|
static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
|
|
{
|
|
atomic_dec(&sbi->nr_pages[count_type]);
|
|
}
|
|
|
|
static inline void inode_dec_dirty_pages(struct inode *inode)
|
|
{
|
|
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
|
|
!S_ISLNK(inode->i_mode))
|
|
return;
|
|
|
|
atomic_dec(&F2FS_I(inode)->dirty_pages);
|
|
dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
|
|
F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
|
|
if (IS_NOQUOTA(inode))
|
|
dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
|
|
}
|
|
|
|
static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
|
|
{
|
|
return atomic_read(&sbi->nr_pages[count_type]);
|
|
}
|
|
|
|
static inline int get_dirty_pages(struct inode *inode)
|
|
{
|
|
return atomic_read(&F2FS_I(inode)->dirty_pages);
|
|
}
|
|
|
|
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
|
|
{
|
|
unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
|
|
unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
|
|
sbi->log_blocks_per_seg;
|
|
|
|
return segs / sbi->segs_per_sec;
|
|
}
|
|
|
|
static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->total_valid_block_count;
|
|
}
|
|
|
|
static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->discard_blks;
|
|
}
|
|
|
|
static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
|
|
/* return NAT or SIT bitmap */
|
|
if (flag == NAT_BITMAP)
|
|
return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
|
|
else if (flag == SIT_BITMAP)
|
|
return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
|
|
{
|
|
return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
|
|
}
|
|
|
|
static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
int offset;
|
|
|
|
if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
|
|
offset = (flag == SIT_BITMAP) ?
|
|
le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
|
|
/*
|
|
* if large_nat_bitmap feature is enabled, leave checksum
|
|
* protection for all nat/sit bitmaps.
|
|
*/
|
|
return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
|
|
}
|
|
|
|
if (__cp_payload(sbi) > 0) {
|
|
if (flag == NAT_BITMAP)
|
|
return &ckpt->sit_nat_version_bitmap;
|
|
else
|
|
return (unsigned char *)ckpt + F2FS_BLKSIZE;
|
|
} else {
|
|
offset = (flag == NAT_BITMAP) ?
|
|
le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
|
|
return &ckpt->sit_nat_version_bitmap + offset;
|
|
}
|
|
}
|
|
|
|
static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
|
|
{
|
|
block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
|
|
|
|
if (sbi->cur_cp_pack == 2)
|
|
start_addr += sbi->blocks_per_seg;
|
|
return start_addr;
|
|
}
|
|
|
|
static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
|
|
{
|
|
block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
|
|
|
|
if (sbi->cur_cp_pack == 1)
|
|
start_addr += sbi->blocks_per_seg;
|
|
return start_addr;
|
|
}
|
|
|
|
static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
|
|
{
|
|
sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
|
|
}
|
|
|
|
static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
|
|
{
|
|
return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
|
|
}
|
|
|
|
static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, bool is_inode)
|
|
{
|
|
block_t valid_block_count;
|
|
unsigned int valid_node_count, user_block_count;
|
|
int err;
|
|
|
|
if (is_inode) {
|
|
if (inode) {
|
|
err = dquot_alloc_inode(inode);
|
|
if (err)
|
|
return err;
|
|
}
|
|
} else {
|
|
err = dquot_reserve_block(inode, 1);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (time_to_inject(sbi, FAULT_BLOCK)) {
|
|
f2fs_show_injection_info(sbi, FAULT_BLOCK);
|
|
goto enospc;
|
|
}
|
|
|
|
spin_lock(&sbi->stat_lock);
|
|
|
|
valid_block_count = sbi->total_valid_block_count +
|
|
sbi->current_reserved_blocks + 1;
|
|
|
|
if (!__allow_reserved_blocks(sbi, inode, false))
|
|
valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
|
|
user_block_count = sbi->user_block_count;
|
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
|
|
user_block_count -= sbi->unusable_block_count;
|
|
|
|
if (unlikely(valid_block_count > user_block_count)) {
|
|
spin_unlock(&sbi->stat_lock);
|
|
goto enospc;
|
|
}
|
|
|
|
valid_node_count = sbi->total_valid_node_count + 1;
|
|
if (unlikely(valid_node_count > sbi->total_node_count)) {
|
|
spin_unlock(&sbi->stat_lock);
|
|
goto enospc;
|
|
}
|
|
|
|
sbi->total_valid_node_count++;
|
|
sbi->total_valid_block_count++;
|
|
spin_unlock(&sbi->stat_lock);
|
|
|
|
if (inode) {
|
|
if (is_inode)
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
else
|
|
f2fs_i_blocks_write(inode, 1, true, true);
|
|
}
|
|
|
|
percpu_counter_inc(&sbi->alloc_valid_block_count);
|
|
return 0;
|
|
|
|
enospc:
|
|
if (is_inode) {
|
|
if (inode)
|
|
dquot_free_inode(inode);
|
|
} else {
|
|
dquot_release_reservation_block(inode, 1);
|
|
}
|
|
return -ENOSPC;
|
|
}
|
|
|
|
static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, bool is_inode)
|
|
{
|
|
spin_lock(&sbi->stat_lock);
|
|
|
|
f2fs_bug_on(sbi, !sbi->total_valid_block_count);
|
|
f2fs_bug_on(sbi, !sbi->total_valid_node_count);
|
|
|
|
sbi->total_valid_node_count--;
|
|
sbi->total_valid_block_count--;
|
|
if (sbi->reserved_blocks &&
|
|
sbi->current_reserved_blocks < sbi->reserved_blocks)
|
|
sbi->current_reserved_blocks++;
|
|
|
|
spin_unlock(&sbi->stat_lock);
|
|
|
|
if (is_inode) {
|
|
dquot_free_inode(inode);
|
|
} else {
|
|
if (unlikely(inode->i_blocks == 0)) {
|
|
f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu",
|
|
inode->i_ino,
|
|
(unsigned long long)inode->i_blocks);
|
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
return;
|
|
}
|
|
f2fs_i_blocks_write(inode, 1, false, true);
|
|
}
|
|
}
|
|
|
|
static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->total_valid_node_count;
|
|
}
|
|
|
|
static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
percpu_counter_inc(&sbi->total_valid_inode_count);
|
|
}
|
|
|
|
static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
percpu_counter_dec(&sbi->total_valid_inode_count);
|
|
}
|
|
|
|
static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
|
|
}
|
|
|
|
static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
|
|
pgoff_t index, bool for_write)
|
|
{
|
|
struct page *page;
|
|
|
|
if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
|
|
if (!for_write)
|
|
page = find_get_page_flags(mapping, index,
|
|
FGP_LOCK | FGP_ACCESSED);
|
|
else
|
|
page = find_lock_page(mapping, index);
|
|
if (page)
|
|
return page;
|
|
|
|
if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
|
|
f2fs_show_injection_info(F2FS_M_SB(mapping),
|
|
FAULT_PAGE_ALLOC);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (!for_write)
|
|
return grab_cache_page(mapping, index);
|
|
return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
|
|
}
|
|
|
|
static inline struct page *f2fs_pagecache_get_page(
|
|
struct address_space *mapping, pgoff_t index,
|
|
int fgp_flags, gfp_t gfp_mask)
|
|
{
|
|
if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
|
|
f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
|
|
return NULL;
|
|
}
|
|
|
|
return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
|
|
}
|
|
|
|
static inline void f2fs_copy_page(struct page *src, struct page *dst)
|
|
{
|
|
char *src_kaddr = kmap(src);
|
|
char *dst_kaddr = kmap(dst);
|
|
|
|
memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
|
|
kunmap(dst);
|
|
kunmap(src);
|
|
}
|
|
|
|
static inline void f2fs_put_page(struct page *page, int unlock)
|
|
{
|
|
if (!page)
|
|
return;
|
|
|
|
if (unlock) {
|
|
f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
|
|
unlock_page(page);
|
|
}
|
|
put_page(page);
|
|
}
|
|
|
|
static inline void f2fs_put_dnode(struct dnode_of_data *dn)
|
|
{
|
|
if (dn->node_page)
|
|
f2fs_put_page(dn->node_page, 1);
|
|
if (dn->inode_page && dn->node_page != dn->inode_page)
|
|
f2fs_put_page(dn->inode_page, 0);
|
|
dn->node_page = NULL;
|
|
dn->inode_page = NULL;
|
|
}
|
|
|
|
static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
|
|
size_t size)
|
|
{
|
|
return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
|
|
}
|
|
|
|
static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
|
|
gfp_t flags)
|
|
{
|
|
void *entry;
|
|
|
|
entry = kmem_cache_alloc(cachep, flags);
|
|
if (!entry)
|
|
entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
|
|
return entry;
|
|
}
|
|
|
|
static inline bool is_inflight_io(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
|
|
get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
|
|
get_pages(sbi, F2FS_WB_CP_DATA) ||
|
|
get_pages(sbi, F2FS_DIO_READ) ||
|
|
get_pages(sbi, F2FS_DIO_WRITE))
|
|
return true;
|
|
|
|
if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
|
|
atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
|
|
return true;
|
|
|
|
if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
|
|
atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
|
|
{
|
|
if (sbi->gc_mode == GC_URGENT_HIGH)
|
|
return true;
|
|
|
|
if (is_inflight_io(sbi, type))
|
|
return false;
|
|
|
|
if (sbi->gc_mode == GC_URGENT_LOW &&
|
|
(type == DISCARD_TIME || type == GC_TIME))
|
|
return true;
|
|
|
|
return f2fs_time_over(sbi, type);
|
|
}
|
|
|
|
static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
|
|
unsigned long index, void *item)
|
|
{
|
|
while (radix_tree_insert(root, index, item))
|
|
cond_resched();
|
|
}
|
|
|
|
#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
|
|
|
|
static inline bool IS_INODE(struct page *page)
|
|
{
|
|
struct f2fs_node *p = F2FS_NODE(page);
|
|
|
|
return RAW_IS_INODE(p);
|
|
}
|
|
|
|
static inline int offset_in_addr(struct f2fs_inode *i)
|
|
{
|
|
return (i->i_inline & F2FS_EXTRA_ATTR) ?
|
|
(le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
|
|
}
|
|
|
|
static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
|
|
{
|
|
return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
|
|
}
|
|
|
|
static inline int f2fs_has_extra_attr(struct inode *inode);
|
|
static inline block_t data_blkaddr(struct inode *inode,
|
|
struct page *node_page, unsigned int offset)
|
|
{
|
|
struct f2fs_node *raw_node;
|
|
__le32 *addr_array;
|
|
int base = 0;
|
|
bool is_inode = IS_INODE(node_page);
|
|
|
|
raw_node = F2FS_NODE(node_page);
|
|
|
|
if (is_inode) {
|
|
if (!inode)
|
|
/* from GC path only */
|
|
base = offset_in_addr(&raw_node->i);
|
|
else if (f2fs_has_extra_attr(inode))
|
|
base = get_extra_isize(inode);
|
|
}
|
|
|
|
addr_array = blkaddr_in_node(raw_node);
|
|
return le32_to_cpu(addr_array[base + offset]);
|
|
}
|
|
|
|
static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn)
|
|
{
|
|
return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node);
|
|
}
|
|
|
|
static inline int f2fs_test_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
return mask & *addr;
|
|
}
|
|
|
|
static inline void f2fs_set_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
*addr |= mask;
|
|
}
|
|
|
|
static inline void f2fs_clear_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
*addr &= ~mask;
|
|
}
|
|
|
|
static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
int ret;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
ret = mask & *addr;
|
|
*addr |= mask;
|
|
return ret;
|
|
}
|
|
|
|
static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
int ret;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
ret = mask & *addr;
|
|
*addr &= ~mask;
|
|
return ret;
|
|
}
|
|
|
|
static inline void f2fs_change_bit(unsigned int nr, char *addr)
|
|
{
|
|
int mask;
|
|
|
|
addr += (nr >> 3);
|
|
mask = 1 << (7 - (nr & 0x07));
|
|
*addr ^= mask;
|
|
}
|
|
|
|
/*
|
|
* On-disk inode flags (f2fs_inode::i_flags)
|
|
*/
|
|
#define F2FS_COMPR_FL 0x00000004 /* Compress file */
|
|
#define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */
|
|
#define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
|
|
#define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */
|
|
#define F2FS_NODUMP_FL 0x00000040 /* do not dump file */
|
|
#define F2FS_NOATIME_FL 0x00000080 /* do not update atime */
|
|
#define F2FS_NOCOMP_FL 0x00000400 /* Don't compress */
|
|
#define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */
|
|
#define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
|
|
#define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
|
|
#define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */
|
|
|
|
/* Flags that should be inherited by new inodes from their parent. */
|
|
#define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
|
|
F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
|
|
F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
|
|
|
|
/* Flags that are appropriate for regular files (all but dir-specific ones). */
|
|
#define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
|
|
F2FS_CASEFOLD_FL))
|
|
|
|
/* Flags that are appropriate for non-directories/regular files. */
|
|
#define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL)
|
|
|
|
static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
|
|
{
|
|
if (S_ISDIR(mode))
|
|
return flags;
|
|
else if (S_ISREG(mode))
|
|
return flags & F2FS_REG_FLMASK;
|
|
else
|
|
return flags & F2FS_OTHER_FLMASK;
|
|
}
|
|
|
|
static inline void __mark_inode_dirty_flag(struct inode *inode,
|
|
int flag, bool set)
|
|
{
|
|
switch (flag) {
|
|
case FI_INLINE_XATTR:
|
|
case FI_INLINE_DATA:
|
|
case FI_INLINE_DENTRY:
|
|
case FI_NEW_INODE:
|
|
if (set)
|
|
return;
|
|
fallthrough;
|
|
case FI_DATA_EXIST:
|
|
case FI_INLINE_DOTS:
|
|
case FI_PIN_FILE:
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
}
|
|
|
|
static inline void set_inode_flag(struct inode *inode, int flag)
|
|
{
|
|
set_bit(flag, F2FS_I(inode)->flags);
|
|
__mark_inode_dirty_flag(inode, flag, true);
|
|
}
|
|
|
|
static inline int is_inode_flag_set(struct inode *inode, int flag)
|
|
{
|
|
return test_bit(flag, F2FS_I(inode)->flags);
|
|
}
|
|
|
|
static inline void clear_inode_flag(struct inode *inode, int flag)
|
|
{
|
|
clear_bit(flag, F2FS_I(inode)->flags);
|
|
__mark_inode_dirty_flag(inode, flag, false);
|
|
}
|
|
|
|
static inline bool f2fs_verity_in_progress(struct inode *inode)
|
|
{
|
|
return IS_ENABLED(CONFIG_FS_VERITY) &&
|
|
is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
|
|
}
|
|
|
|
static inline void set_acl_inode(struct inode *inode, umode_t mode)
|
|
{
|
|
F2FS_I(inode)->i_acl_mode = mode;
|
|
set_inode_flag(inode, FI_ACL_MODE);
|
|
f2fs_mark_inode_dirty_sync(inode, false);
|
|
}
|
|
|
|
static inline void f2fs_i_links_write(struct inode *inode, bool inc)
|
|
{
|
|
if (inc)
|
|
inc_nlink(inode);
|
|
else
|
|
drop_nlink(inode);
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void f2fs_i_blocks_write(struct inode *inode,
|
|
block_t diff, bool add, bool claim)
|
|
{
|
|
bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
|
|
bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
|
|
|
|
/* add = 1, claim = 1 should be dquot_reserve_block in pair */
|
|
if (add) {
|
|
if (claim)
|
|
dquot_claim_block(inode, diff);
|
|
else
|
|
dquot_alloc_block_nofail(inode, diff);
|
|
} else {
|
|
dquot_free_block(inode, diff);
|
|
}
|
|
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
if (clean || recover)
|
|
set_inode_flag(inode, FI_AUTO_RECOVER);
|
|
}
|
|
|
|
static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
|
|
{
|
|
bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
|
|
bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
|
|
|
|
if (i_size_read(inode) == i_size)
|
|
return;
|
|
|
|
i_size_write(inode, i_size);
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
if (clean || recover)
|
|
set_inode_flag(inode, FI_AUTO_RECOVER);
|
|
}
|
|
|
|
static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
|
|
{
|
|
F2FS_I(inode)->i_current_depth = depth;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void f2fs_i_gc_failures_write(struct inode *inode,
|
|
unsigned int count)
|
|
{
|
|
F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
|
|
{
|
|
F2FS_I(inode)->i_xattr_nid = xnid;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
|
|
{
|
|
F2FS_I(inode)->i_pino = pino;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
|
|
{
|
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
|
|
|
if (ri->i_inline & F2FS_INLINE_XATTR)
|
|
set_bit(FI_INLINE_XATTR, fi->flags);
|
|
if (ri->i_inline & F2FS_INLINE_DATA)
|
|
set_bit(FI_INLINE_DATA, fi->flags);
|
|
if (ri->i_inline & F2FS_INLINE_DENTRY)
|
|
set_bit(FI_INLINE_DENTRY, fi->flags);
|
|
if (ri->i_inline & F2FS_DATA_EXIST)
|
|
set_bit(FI_DATA_EXIST, fi->flags);
|
|
if (ri->i_inline & F2FS_INLINE_DOTS)
|
|
set_bit(FI_INLINE_DOTS, fi->flags);
|
|
if (ri->i_inline & F2FS_EXTRA_ATTR)
|
|
set_bit(FI_EXTRA_ATTR, fi->flags);
|
|
if (ri->i_inline & F2FS_PIN_FILE)
|
|
set_bit(FI_PIN_FILE, fi->flags);
|
|
}
|
|
|
|
static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
|
|
{
|
|
ri->i_inline = 0;
|
|
|
|
if (is_inode_flag_set(inode, FI_INLINE_XATTR))
|
|
ri->i_inline |= F2FS_INLINE_XATTR;
|
|
if (is_inode_flag_set(inode, FI_INLINE_DATA))
|
|
ri->i_inline |= F2FS_INLINE_DATA;
|
|
if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
|
|
ri->i_inline |= F2FS_INLINE_DENTRY;
|
|
if (is_inode_flag_set(inode, FI_DATA_EXIST))
|
|
ri->i_inline |= F2FS_DATA_EXIST;
|
|
if (is_inode_flag_set(inode, FI_INLINE_DOTS))
|
|
ri->i_inline |= F2FS_INLINE_DOTS;
|
|
if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
|
|
ri->i_inline |= F2FS_EXTRA_ATTR;
|
|
if (is_inode_flag_set(inode, FI_PIN_FILE))
|
|
ri->i_inline |= F2FS_PIN_FILE;
|
|
}
|
|
|
|
static inline int f2fs_has_extra_attr(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_EXTRA_ATTR);
|
|
}
|
|
|
|
static inline int f2fs_has_inline_xattr(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_INLINE_XATTR);
|
|
}
|
|
|
|
static inline int f2fs_compressed_file(struct inode *inode)
|
|
{
|
|
return S_ISREG(inode->i_mode) &&
|
|
is_inode_flag_set(inode, FI_COMPRESSED_FILE);
|
|
}
|
|
|
|
static inline bool f2fs_need_compress_data(struct inode *inode)
|
|
{
|
|
int compress_mode = F2FS_OPTION(F2FS_I_SB(inode)).compress_mode;
|
|
|
|
if (!f2fs_compressed_file(inode))
|
|
return false;
|
|
|
|
if (compress_mode == COMPR_MODE_FS)
|
|
return true;
|
|
else if (compress_mode == COMPR_MODE_USER &&
|
|
is_inode_flag_set(inode, FI_ENABLE_COMPRESS))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static inline unsigned int addrs_per_inode(struct inode *inode)
|
|
{
|
|
unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
|
|
get_inline_xattr_addrs(inode);
|
|
|
|
if (!f2fs_compressed_file(inode))
|
|
return addrs;
|
|
return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size);
|
|
}
|
|
|
|
static inline unsigned int addrs_per_block(struct inode *inode)
|
|
{
|
|
if (!f2fs_compressed_file(inode))
|
|
return DEF_ADDRS_PER_BLOCK;
|
|
return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size);
|
|
}
|
|
|
|
static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
|
|
{
|
|
struct f2fs_inode *ri = F2FS_INODE(page);
|
|
|
|
return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
|
|
get_inline_xattr_addrs(inode)]);
|
|
}
|
|
|
|
static inline int inline_xattr_size(struct inode *inode)
|
|
{
|
|
if (f2fs_has_inline_xattr(inode))
|
|
return get_inline_xattr_addrs(inode) * sizeof(__le32);
|
|
return 0;
|
|
}
|
|
|
|
static inline int f2fs_has_inline_data(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_INLINE_DATA);
|
|
}
|
|
|
|
static inline int f2fs_exist_data(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_DATA_EXIST);
|
|
}
|
|
|
|
static inline int f2fs_has_inline_dots(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_INLINE_DOTS);
|
|
}
|
|
|
|
static inline int f2fs_is_mmap_file(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_MMAP_FILE);
|
|
}
|
|
|
|
static inline bool f2fs_is_pinned_file(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_PIN_FILE);
|
|
}
|
|
|
|
static inline bool f2fs_is_atomic_file(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_ATOMIC_FILE);
|
|
}
|
|
|
|
static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
|
|
}
|
|
|
|
static inline bool f2fs_is_volatile_file(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_VOLATILE_FILE);
|
|
}
|
|
|
|
static inline bool f2fs_is_first_block_written(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
|
|
}
|
|
|
|
static inline bool f2fs_is_drop_cache(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_DROP_CACHE);
|
|
}
|
|
|
|
static inline void *inline_data_addr(struct inode *inode, struct page *page)
|
|
{
|
|
struct f2fs_inode *ri = F2FS_INODE(page);
|
|
int extra_size = get_extra_isize(inode);
|
|
|
|
return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
|
|
}
|
|
|
|
static inline int f2fs_has_inline_dentry(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(inode, FI_INLINE_DENTRY);
|
|
}
|
|
|
|
static inline int is_file(struct inode *inode, int type)
|
|
{
|
|
return F2FS_I(inode)->i_advise & type;
|
|
}
|
|
|
|
static inline void set_file(struct inode *inode, int type)
|
|
{
|
|
F2FS_I(inode)->i_advise |= type;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline void clear_file(struct inode *inode, int type)
|
|
{
|
|
F2FS_I(inode)->i_advise &= ~type;
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline bool f2fs_is_time_consistent(struct inode *inode)
|
|
{
|
|
if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
|
|
return false;
|
|
if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
|
|
return false;
|
|
if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
|
|
return false;
|
|
if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
|
|
&F2FS_I(inode)->i_crtime))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
|
|
{
|
|
bool ret;
|
|
|
|
if (dsync) {
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
|
|
spin_lock(&sbi->inode_lock[DIRTY_META]);
|
|
ret = list_empty(&F2FS_I(inode)->gdirty_list);
|
|
spin_unlock(&sbi->inode_lock[DIRTY_META]);
|
|
return ret;
|
|
}
|
|
if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
|
|
file_keep_isize(inode) ||
|
|
i_size_read(inode) & ~PAGE_MASK)
|
|
return false;
|
|
|
|
if (!f2fs_is_time_consistent(inode))
|
|
return false;
|
|
|
|
spin_lock(&F2FS_I(inode)->i_size_lock);
|
|
ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
|
|
spin_unlock(&F2FS_I(inode)->i_size_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline bool f2fs_readonly(struct super_block *sb)
|
|
{
|
|
return sb_rdonly(sb);
|
|
}
|
|
|
|
static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
|
|
{
|
|
return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
|
|
}
|
|
|
|
static inline bool is_dot_dotdot(const u8 *name, size_t len)
|
|
{
|
|
if (len == 1 && name[0] == '.')
|
|
return true;
|
|
|
|
if (len == 2 && name[0] == '.' && name[1] == '.')
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static inline bool f2fs_may_extent_tree(struct inode *inode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
|
|
if (!test_opt(sbi, EXTENT_CACHE) ||
|
|
is_inode_flag_set(inode, FI_NO_EXTENT) ||
|
|
is_inode_flag_set(inode, FI_COMPRESSED_FILE))
|
|
return false;
|
|
|
|
/*
|
|
* for recovered files during mount do not create extents
|
|
* if shrinker is not registered.
|
|
*/
|
|
if (list_empty(&sbi->s_list))
|
|
return false;
|
|
|
|
return S_ISREG(inode->i_mode);
|
|
}
|
|
|
|
static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
|
|
size_t size, gfp_t flags)
|
|
{
|
|
if (time_to_inject(sbi, FAULT_KMALLOC)) {
|
|
f2fs_show_injection_info(sbi, FAULT_KMALLOC);
|
|
return NULL;
|
|
}
|
|
|
|
return kmalloc(size, flags);
|
|
}
|
|
|
|
static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
|
|
size_t size, gfp_t flags)
|
|
{
|
|
return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
|
|
}
|
|
|
|
static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
|
|
size_t size, gfp_t flags)
|
|
{
|
|
if (time_to_inject(sbi, FAULT_KVMALLOC)) {
|
|
f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
|
|
return NULL;
|
|
}
|
|
|
|
return kvmalloc(size, flags);
|
|
}
|
|
|
|
static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
|
|
size_t size, gfp_t flags)
|
|
{
|
|
return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
|
|
}
|
|
|
|
static inline int get_extra_isize(struct inode *inode)
|
|
{
|
|
return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
|
|
}
|
|
|
|
static inline int get_inline_xattr_addrs(struct inode *inode)
|
|
{
|
|
return F2FS_I(inode)->i_inline_xattr_size;
|
|
}
|
|
|
|
#define f2fs_get_inode_mode(i) \
|
|
((is_inode_flag_set(i, FI_ACL_MODE)) ? \
|
|
(F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
|
|
|
|
#define F2FS_TOTAL_EXTRA_ATTR_SIZE \
|
|
(offsetof(struct f2fs_inode, i_extra_end) - \
|
|
offsetof(struct f2fs_inode, i_extra_isize)) \
|
|
|
|
#define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
|
|
#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
|
|
((offsetof(typeof(*(f2fs_inode)), field) + \
|
|
sizeof((f2fs_inode)->field)) \
|
|
<= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \
|
|
|
|
#define DEFAULT_IOSTAT_PERIOD_MS 3000
|
|
#define MIN_IOSTAT_PERIOD_MS 100
|
|
/* maximum period of iostat tracing is 1 day */
|
|
#define MAX_IOSTAT_PERIOD_MS 8640000
|
|
|
|
static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
|
|
{
|
|
int i;
|
|
|
|
spin_lock(&sbi->iostat_lock);
|
|
for (i = 0; i < NR_IO_TYPE; i++) {
|
|
sbi->rw_iostat[i] = 0;
|
|
sbi->prev_rw_iostat[i] = 0;
|
|
}
|
|
spin_unlock(&sbi->iostat_lock);
|
|
}
|
|
|
|
extern void f2fs_record_iostat(struct f2fs_sb_info *sbi);
|
|
|
|
static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
|
|
enum iostat_type type, unsigned long long io_bytes)
|
|
{
|
|
if (!sbi->iostat_enable)
|
|
return;
|
|
spin_lock(&sbi->iostat_lock);
|
|
sbi->rw_iostat[type] += io_bytes;
|
|
|
|
if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
|
|
sbi->rw_iostat[APP_BUFFERED_IO] =
|
|
sbi->rw_iostat[APP_WRITE_IO] -
|
|
sbi->rw_iostat[APP_DIRECT_IO];
|
|
|
|
if (type == APP_READ_IO || type == APP_DIRECT_READ_IO)
|
|
sbi->rw_iostat[APP_BUFFERED_READ_IO] =
|
|
sbi->rw_iostat[APP_READ_IO] -
|
|
sbi->rw_iostat[APP_DIRECT_READ_IO];
|
|
spin_unlock(&sbi->iostat_lock);
|
|
|
|
f2fs_record_iostat(sbi);
|
|
}
|
|
|
|
#define __is_large_section(sbi) ((sbi)->segs_per_sec > 1)
|
|
|
|
#define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
|
|
|
|
bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
|
|
block_t blkaddr, int type);
|
|
static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
|
|
block_t blkaddr, int type)
|
|
{
|
|
if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
|
|
f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
|
|
blkaddr, type);
|
|
f2fs_bug_on(sbi, 1);
|
|
}
|
|
}
|
|
|
|
static inline bool __is_valid_data_blkaddr(block_t blkaddr)
|
|
{
|
|
if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR ||
|
|
blkaddr == COMPRESS_ADDR)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static inline void f2fs_set_page_private(struct page *page,
|
|
unsigned long data)
|
|
{
|
|
if (PagePrivate(page))
|
|
return;
|
|
|
|
attach_page_private(page, (void *)data);
|
|
}
|
|
|
|
static inline void f2fs_clear_page_private(struct page *page)
|
|
{
|
|
detach_page_private(page);
|
|
}
|
|
|
|
/*
|
|
* file.c
|
|
*/
|
|
int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
|
|
void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
|
|
int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock);
|
|
int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
|
|
int f2fs_truncate(struct inode *inode);
|
|
int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
|
|
struct kstat *stat, u32 request_mask, unsigned int flags);
|
|
int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
|
|
struct iattr *attr);
|
|
int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
|
|
void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
|
|
int f2fs_precache_extents(struct inode *inode);
|
|
long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
|
|
long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
|
|
int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
|
|
int f2fs_pin_file_control(struct inode *inode, bool inc);
|
|
|
|
/*
|
|
* inode.c
|
|
*/
|
|
void f2fs_set_inode_flags(struct inode *inode);
|
|
bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
|
|
void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
|
|
struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
|
|
struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
|
|
int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
|
|
void f2fs_update_inode(struct inode *inode, struct page *node_page);
|
|
void f2fs_update_inode_page(struct inode *inode);
|
|
int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
|
|
void f2fs_evict_inode(struct inode *inode);
|
|
void f2fs_handle_failed_inode(struct inode *inode);
|
|
|
|
/*
|
|
* namei.c
|
|
*/
|
|
int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
|
|
bool hot, bool set);
|
|
struct dentry *f2fs_get_parent(struct dentry *child);
|
|
|
|
/*
|
|
* dir.c
|
|
*/
|
|
unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
|
|
int f2fs_init_casefolded_name(const struct inode *dir,
|
|
struct f2fs_filename *fname);
|
|
int f2fs_setup_filename(struct inode *dir, const struct qstr *iname,
|
|
int lookup, struct f2fs_filename *fname);
|
|
int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry,
|
|
struct f2fs_filename *fname);
|
|
void f2fs_free_filename(struct f2fs_filename *fname);
|
|
struct f2fs_dir_entry *f2fs_find_target_dentry(const struct f2fs_dentry_ptr *d,
|
|
const struct f2fs_filename *fname, int *max_slots);
|
|
int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
|
|
unsigned int start_pos, struct fscrypt_str *fstr);
|
|
void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
|
|
struct f2fs_dentry_ptr *d);
|
|
struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
|
|
const struct f2fs_filename *fname, struct page *dpage);
|
|
void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
|
|
unsigned int current_depth);
|
|
int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
|
|
void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
|
|
struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
|
|
const struct f2fs_filename *fname,
|
|
struct page **res_page);
|
|
struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
|
|
const struct qstr *child, struct page **res_page);
|
|
struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
|
|
ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
|
|
struct page **page);
|
|
void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
|
|
struct page *page, struct inode *inode);
|
|
bool f2fs_has_enough_room(struct inode *dir, struct page *ipage,
|
|
const struct f2fs_filename *fname);
|
|
void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
|
|
const struct fscrypt_str *name, f2fs_hash_t name_hash,
|
|
unsigned int bit_pos);
|
|
int f2fs_add_regular_entry(struct inode *dir, const struct f2fs_filename *fname,
|
|
struct inode *inode, nid_t ino, umode_t mode);
|
|
int f2fs_add_dentry(struct inode *dir, const struct f2fs_filename *fname,
|
|
struct inode *inode, nid_t ino, umode_t mode);
|
|
int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
|
|
struct inode *inode, nid_t ino, umode_t mode);
|
|
void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
|
|
struct inode *dir, struct inode *inode);
|
|
int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
|
|
bool f2fs_empty_dir(struct inode *dir);
|
|
|
|
static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
|
|
{
|
|
if (fscrypt_is_nokey_name(dentry))
|
|
return -ENOKEY;
|
|
return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
|
|
inode, inode->i_ino, inode->i_mode);
|
|
}
|
|
|
|
/*
|
|
* super.c
|
|
*/
|
|
int f2fs_inode_dirtied(struct inode *inode, bool sync);
|
|
void f2fs_inode_synced(struct inode *inode);
|
|
int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
|
|
int f2fs_quota_sync(struct super_block *sb, int type);
|
|
loff_t max_file_blocks(struct inode *inode);
|
|
void f2fs_quota_off_umount(struct super_block *sb);
|
|
int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
|
|
int f2fs_sync_fs(struct super_block *sb, int sync);
|
|
int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
|
|
|
|
/*
|
|
* hash.c
|
|
*/
|
|
void f2fs_hash_filename(const struct inode *dir, struct f2fs_filename *fname);
|
|
|
|
/*
|
|
* node.c
|
|
*/
|
|
struct dnode_of_data;
|
|
struct node_info;
|
|
|
|
int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
|
|
bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
|
|
bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
|
|
void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
|
|
void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
|
|
void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
|
|
int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
|
|
bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
|
|
bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
|
|
int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
|
|
struct node_info *ni);
|
|
pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
|
|
int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
|
|
int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
|
|
int f2fs_truncate_xattr_node(struct inode *inode);
|
|
int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
|
|
unsigned int seq_id);
|
|
int f2fs_remove_inode_page(struct inode *inode);
|
|
struct page *f2fs_new_inode_page(struct inode *inode);
|
|
struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
|
|
void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
|
|
struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
|
|
struct page *f2fs_get_node_page_ra(struct page *parent, int start);
|
|
int f2fs_move_node_page(struct page *node_page, int gc_type);
|
|
void f2fs_flush_inline_data(struct f2fs_sb_info *sbi);
|
|
int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
|
|
struct writeback_control *wbc, bool atomic,
|
|
unsigned int *seq_id);
|
|
int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
|
|
struct writeback_control *wbc,
|
|
bool do_balance, enum iostat_type io_type);
|
|
int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
|
|
bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
|
|
void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
|
|
void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
|
|
int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
|
|
int f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
|
|
int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
|
|
int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
|
|
int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
|
|
unsigned int segno, struct f2fs_summary_block *sum);
|
|
int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
|
|
int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
|
|
int __init f2fs_create_node_manager_caches(void);
|
|
void f2fs_destroy_node_manager_caches(void);
|
|
|
|
/*
|
|
* segment.c
|
|
*/
|
|
bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
|
|
void f2fs_register_inmem_page(struct inode *inode, struct page *page);
|
|
void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
|
|
void f2fs_drop_inmem_pages(struct inode *inode);
|
|
void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
|
|
int f2fs_commit_inmem_pages(struct inode *inode);
|
|
void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
|
|
void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg);
|
|
int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
|
|
int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
|
|
int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
|
|
void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
|
|
bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
|
|
void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
|
|
void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
|
|
bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
|
|
void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
|
|
struct cp_control *cpc);
|
|
void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
|
|
block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
|
|
int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
|
|
void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
|
|
int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
|
|
void f2fs_init_inmem_curseg(struct f2fs_sb_info *sbi);
|
|
void f2fs_save_inmem_curseg(struct f2fs_sb_info *sbi);
|
|
void f2fs_restore_inmem_curseg(struct f2fs_sb_info *sbi);
|
|
void f2fs_get_new_segment(struct f2fs_sb_info *sbi,
|
|
unsigned int *newseg, bool new_sec, int dir);
|
|
void f2fs_allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
|
|
unsigned int start, unsigned int end);
|
|
void f2fs_allocate_new_segment(struct f2fs_sb_info *sbi, int type);
|
|
void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi);
|
|
int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
|
|
bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
|
|
struct cp_control *cpc);
|
|
struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
|
|
void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
|
|
block_t blk_addr);
|
|
void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
|
|
enum iostat_type io_type);
|
|
void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
|
|
void f2fs_outplace_write_data(struct dnode_of_data *dn,
|
|
struct f2fs_io_info *fio);
|
|
int f2fs_inplace_write_data(struct f2fs_io_info *fio);
|
|
void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
|
|
block_t old_blkaddr, block_t new_blkaddr,
|
|
bool recover_curseg, bool recover_newaddr,
|
|
bool from_gc);
|
|
void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
|
|
block_t old_addr, block_t new_addr,
|
|
unsigned char version, bool recover_curseg,
|
|
bool recover_newaddr);
|
|
void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
|
|
block_t old_blkaddr, block_t *new_blkaddr,
|
|
struct f2fs_summary *sum, int type,
|
|
struct f2fs_io_info *fio);
|
|
void f2fs_wait_on_page_writeback(struct page *page,
|
|
enum page_type type, bool ordered, bool locked);
|
|
void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
|
|
void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
|
|
block_t len);
|
|
void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
|
|
void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
|
|
int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
|
|
unsigned int val, int alloc);
|
|
void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
|
|
int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi);
|
|
int f2fs_check_write_pointer(struct f2fs_sb_info *sbi);
|
|
int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
|
|
int __init f2fs_create_segment_manager_caches(void);
|
|
void f2fs_destroy_segment_manager_caches(void);
|
|
int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
|
|
enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
|
|
enum page_type type, enum temp_type temp);
|
|
unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
|
|
unsigned int segno);
|
|
unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
|
|
unsigned int segno);
|
|
|
|
/*
|
|
* checkpoint.c
|
|
*/
|
|
void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
|
|
struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
|
|
struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
|
|
struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index);
|
|
struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
|
|
bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
|
|
block_t blkaddr, int type);
|
|
int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
|
|
int type, bool sync);
|
|
void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
|
|
long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
|
|
long nr_to_write, enum iostat_type io_type);
|
|
void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
|
|
void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
|
|
void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
|
|
bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
|
|
void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
|
|
unsigned int devidx, int type);
|
|
bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
|
|
unsigned int devidx, int type);
|
|
int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
|
|
int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
|
|
void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
|
|
void f2fs_add_orphan_inode(struct inode *inode);
|
|
void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
|
|
int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
|
|
int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
|
|
void f2fs_update_dirty_page(struct inode *inode, struct page *page);
|
|
void f2fs_remove_dirty_inode(struct inode *inode);
|
|
int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
|
|
void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
|
|
u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi);
|
|
int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
|
|
void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
|
|
int __init f2fs_create_checkpoint_caches(void);
|
|
void f2fs_destroy_checkpoint_caches(void);
|
|
int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi);
|
|
int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi);
|
|
void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi);
|
|
void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi);
|
|
|
|
/*
|
|
* data.c
|
|
*/
|
|
int __init f2fs_init_bioset(void);
|
|
void f2fs_destroy_bioset(void);
|
|
int f2fs_init_bio_entry_cache(void);
|
|
void f2fs_destroy_bio_entry_cache(void);
|
|
void f2fs_submit_bio(struct f2fs_sb_info *sbi,
|
|
struct bio *bio, enum page_type type);
|
|
void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
|
|
void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, struct page *page,
|
|
nid_t ino, enum page_type type);
|
|
void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
|
|
struct bio **bio, struct page *page);
|
|
void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
|
|
int f2fs_submit_page_bio(struct f2fs_io_info *fio);
|
|
int f2fs_merge_page_bio(struct f2fs_io_info *fio);
|
|
void f2fs_submit_page_write(struct f2fs_io_info *fio);
|
|
struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
|
|
block_t blk_addr, struct bio *bio);
|
|
int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
|
|
void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
|
|
void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
|
|
int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
|
|
int f2fs_reserve_new_block(struct dnode_of_data *dn);
|
|
int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
|
|
int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
|
|
int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
|
|
struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
|
|
int op_flags, bool for_write);
|
|
struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
|
|
struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
|
|
bool for_write);
|
|
struct page *f2fs_get_new_data_page(struct inode *inode,
|
|
struct page *ipage, pgoff_t index, bool new_i_size);
|
|
int f2fs_do_write_data_page(struct f2fs_io_info *fio);
|
|
void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
|
|
int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
|
|
int create, int flag);
|
|
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
|
|
u64 start, u64 len);
|
|
int f2fs_encrypt_one_page(struct f2fs_io_info *fio);
|
|
bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
|
|
bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
|
|
int f2fs_write_single_data_page(struct page *page, int *submitted,
|
|
struct bio **bio, sector_t *last_block,
|
|
struct writeback_control *wbc,
|
|
enum iostat_type io_type,
|
|
int compr_blocks, bool allow_balance);
|
|
void f2fs_invalidate_page(struct page *page, unsigned int offset,
|
|
unsigned int length);
|
|
int f2fs_release_page(struct page *page, gfp_t wait);
|
|
#ifdef CONFIG_MIGRATION
|
|
int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
|
|
struct page *page, enum migrate_mode mode);
|
|
#endif
|
|
bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
|
|
void f2fs_clear_page_cache_dirty_tag(struct page *page);
|
|
int f2fs_init_post_read_processing(void);
|
|
void f2fs_destroy_post_read_processing(void);
|
|
int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
|
|
|
|
/*
|
|
* gc.c
|
|
*/
|
|
int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
|
|
void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
|
|
block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
|
|
int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
|
|
unsigned int segno);
|
|
void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
|
|
int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
|
|
int __init f2fs_create_garbage_collection_cache(void);
|
|
void f2fs_destroy_garbage_collection_cache(void);
|
|
|
|
/*
|
|
* recovery.c
|
|
*/
|
|
int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
|
|
bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
|
|
|
|
/*
|
|
* debug.c
|
|
*/
|
|
#ifdef CONFIG_F2FS_STAT_FS
|
|
struct f2fs_stat_info {
|
|
struct list_head stat_list;
|
|
struct f2fs_sb_info *sbi;
|
|
int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
|
|
int main_area_segs, main_area_sections, main_area_zones;
|
|
unsigned long long hit_largest, hit_cached, hit_rbtree;
|
|
unsigned long long hit_total, total_ext;
|
|
int ext_tree, zombie_tree, ext_node;
|
|
int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
|
|
int ndirty_data, ndirty_qdata;
|
|
int inmem_pages;
|
|
unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
|
|
int nats, dirty_nats, sits, dirty_sits;
|
|
int free_nids, avail_nids, alloc_nids;
|
|
int total_count, utilization;
|
|
int bg_gc, nr_wb_cp_data, nr_wb_data;
|
|
int nr_rd_data, nr_rd_node, nr_rd_meta;
|
|
int nr_dio_read, nr_dio_write;
|
|
unsigned int io_skip_bggc, other_skip_bggc;
|
|
int nr_flushing, nr_flushed, flush_list_empty;
|
|
int nr_discarding, nr_discarded;
|
|
int nr_discard_cmd;
|
|
unsigned int undiscard_blks;
|
|
int nr_issued_ckpt, nr_total_ckpt, nr_queued_ckpt;
|
|
unsigned int cur_ckpt_time, peak_ckpt_time;
|
|
int inline_xattr, inline_inode, inline_dir, append, update, orphans;
|
|
int compr_inode;
|
|
unsigned long long compr_blocks;
|
|
int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
|
|
unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
|
|
unsigned int bimodal, avg_vblocks;
|
|
int util_free, util_valid, util_invalid;
|
|
int rsvd_segs, overp_segs;
|
|
int dirty_count, node_pages, meta_pages;
|
|
int prefree_count, call_count, cp_count, bg_cp_count;
|
|
int tot_segs, node_segs, data_segs, free_segs, free_secs;
|
|
int bg_node_segs, bg_data_segs;
|
|
int tot_blks, data_blks, node_blks;
|
|
int bg_data_blks, bg_node_blks;
|
|
unsigned long long skipped_atomic_files[2];
|
|
int curseg[NR_CURSEG_TYPE];
|
|
int cursec[NR_CURSEG_TYPE];
|
|
int curzone[NR_CURSEG_TYPE];
|
|
unsigned int dirty_seg[NR_CURSEG_TYPE];
|
|
unsigned int full_seg[NR_CURSEG_TYPE];
|
|
unsigned int valid_blks[NR_CURSEG_TYPE];
|
|
|
|
unsigned int meta_count[META_MAX];
|
|
unsigned int segment_count[2];
|
|
unsigned int block_count[2];
|
|
unsigned int inplace_count;
|
|
unsigned long long base_mem, cache_mem, page_mem;
|
|
};
|
|
|
|
static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (struct f2fs_stat_info *)sbi->stat_info;
|
|
}
|
|
|
|
#define stat_inc_cp_count(si) ((si)->cp_count++)
|
|
#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
|
|
#define stat_inc_call_count(si) ((si)->call_count++)
|
|
#define stat_inc_bggc_count(si) ((si)->bg_gc++)
|
|
#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
|
|
#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
|
|
#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
|
|
#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
|
|
#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
|
|
#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
|
|
#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
|
|
#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
|
|
#define stat_inc_inline_xattr(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_xattr(inode)) \
|
|
(atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
|
|
} while (0)
|
|
#define stat_dec_inline_xattr(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_xattr(inode)) \
|
|
(atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
|
|
} while (0)
|
|
#define stat_inc_inline_inode(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_data(inode)) \
|
|
(atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
|
|
} while (0)
|
|
#define stat_dec_inline_inode(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_data(inode)) \
|
|
(atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
|
|
} while (0)
|
|
#define stat_inc_inline_dir(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_dentry(inode)) \
|
|
(atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
|
|
} while (0)
|
|
#define stat_dec_inline_dir(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_dentry(inode)) \
|
|
(atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
|
|
} while (0)
|
|
#define stat_inc_compr_inode(inode) \
|
|
do { \
|
|
if (f2fs_compressed_file(inode)) \
|
|
(atomic_inc(&F2FS_I_SB(inode)->compr_inode)); \
|
|
} while (0)
|
|
#define stat_dec_compr_inode(inode) \
|
|
do { \
|
|
if (f2fs_compressed_file(inode)) \
|
|
(atomic_dec(&F2FS_I_SB(inode)->compr_inode)); \
|
|
} while (0)
|
|
#define stat_add_compr_blocks(inode, blocks) \
|
|
(atomic64_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
|
|
#define stat_sub_compr_blocks(inode, blocks) \
|
|
(atomic64_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
|
|
#define stat_inc_meta_count(sbi, blkaddr) \
|
|
do { \
|
|
if (blkaddr < SIT_I(sbi)->sit_base_addr) \
|
|
atomic_inc(&(sbi)->meta_count[META_CP]); \
|
|
else if (blkaddr < NM_I(sbi)->nat_blkaddr) \
|
|
atomic_inc(&(sbi)->meta_count[META_SIT]); \
|
|
else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \
|
|
atomic_inc(&(sbi)->meta_count[META_NAT]); \
|
|
else if (blkaddr < SM_I(sbi)->main_blkaddr) \
|
|
atomic_inc(&(sbi)->meta_count[META_SSA]); \
|
|
} while (0)
|
|
#define stat_inc_seg_type(sbi, curseg) \
|
|
((sbi)->segment_count[(curseg)->alloc_type]++)
|
|
#define stat_inc_block_count(sbi, curseg) \
|
|
((sbi)->block_count[(curseg)->alloc_type]++)
|
|
#define stat_inc_inplace_blocks(sbi) \
|
|
(atomic_inc(&(sbi)->inplace_count))
|
|
#define stat_update_max_atomic_write(inode) \
|
|
do { \
|
|
int cur = F2FS_I_SB(inode)->atomic_files; \
|
|
int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
|
|
if (cur > max) \
|
|
atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
|
|
} while (0)
|
|
#define stat_inc_volatile_write(inode) \
|
|
(atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
|
|
#define stat_dec_volatile_write(inode) \
|
|
(atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
|
|
#define stat_update_max_volatile_write(inode) \
|
|
do { \
|
|
int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
|
|
int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
|
|
if (cur > max) \
|
|
atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
|
|
} while (0)
|
|
#define stat_inc_seg_count(sbi, type, gc_type) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
si->tot_segs++; \
|
|
if ((type) == SUM_TYPE_DATA) { \
|
|
si->data_segs++; \
|
|
si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
|
|
} else { \
|
|
si->node_segs++; \
|
|
si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define stat_inc_tot_blk_count(si, blks) \
|
|
((si)->tot_blks += (blks))
|
|
|
|
#define stat_inc_data_blk_count(sbi, blks, gc_type) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
stat_inc_tot_blk_count(si, blks); \
|
|
si->data_blks += (blks); \
|
|
si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
|
|
} while (0)
|
|
|
|
#define stat_inc_node_blk_count(sbi, blks, gc_type) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
stat_inc_tot_blk_count(si, blks); \
|
|
si->node_blks += (blks); \
|
|
si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
|
|
} while (0)
|
|
|
|
int f2fs_build_stats(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
|
|
void __init f2fs_create_root_stats(void);
|
|
void f2fs_destroy_root_stats(void);
|
|
void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
|
|
#else
|
|
#define stat_inc_cp_count(si) do { } while (0)
|
|
#define stat_inc_bg_cp_count(si) do { } while (0)
|
|
#define stat_inc_call_count(si) do { } while (0)
|
|
#define stat_inc_bggc_count(si) do { } while (0)
|
|
#define stat_io_skip_bggc_count(sbi) do { } while (0)
|
|
#define stat_other_skip_bggc_count(sbi) do { } while (0)
|
|
#define stat_inc_dirty_inode(sbi, type) do { } while (0)
|
|
#define stat_dec_dirty_inode(sbi, type) do { } while (0)
|
|
#define stat_inc_total_hit(sbi) do { } while (0)
|
|
#define stat_inc_rbtree_node_hit(sbi) do { } while (0)
|
|
#define stat_inc_largest_node_hit(sbi) do { } while (0)
|
|
#define stat_inc_cached_node_hit(sbi) do { } while (0)
|
|
#define stat_inc_inline_xattr(inode) do { } while (0)
|
|
#define stat_dec_inline_xattr(inode) do { } while (0)
|
|
#define stat_inc_inline_inode(inode) do { } while (0)
|
|
#define stat_dec_inline_inode(inode) do { } while (0)
|
|
#define stat_inc_inline_dir(inode) do { } while (0)
|
|
#define stat_dec_inline_dir(inode) do { } while (0)
|
|
#define stat_inc_compr_inode(inode) do { } while (0)
|
|
#define stat_dec_compr_inode(inode) do { } while (0)
|
|
#define stat_add_compr_blocks(inode, blocks) do { } while (0)
|
|
#define stat_sub_compr_blocks(inode, blocks) do { } while (0)
|
|
#define stat_update_max_atomic_write(inode) do { } while (0)
|
|
#define stat_inc_volatile_write(inode) do { } while (0)
|
|
#define stat_dec_volatile_write(inode) do { } while (0)
|
|
#define stat_update_max_volatile_write(inode) do { } while (0)
|
|
#define stat_inc_meta_count(sbi, blkaddr) do { } while (0)
|
|
#define stat_inc_seg_type(sbi, curseg) do { } while (0)
|
|
#define stat_inc_block_count(sbi, curseg) do { } while (0)
|
|
#define stat_inc_inplace_blocks(sbi) do { } while (0)
|
|
#define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
|
|
#define stat_inc_tot_blk_count(si, blks) do { } while (0)
|
|
#define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
|
|
#define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
|
|
|
|
static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
|
|
static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
|
|
static inline void __init f2fs_create_root_stats(void) { }
|
|
static inline void f2fs_destroy_root_stats(void) { }
|
|
static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {}
|
|
#endif
|
|
|
|
extern const struct file_operations f2fs_dir_operations;
|
|
extern const struct file_operations f2fs_file_operations;
|
|
extern const struct inode_operations f2fs_file_inode_operations;
|
|
extern const struct address_space_operations f2fs_dblock_aops;
|
|
extern const struct address_space_operations f2fs_node_aops;
|
|
extern const struct address_space_operations f2fs_meta_aops;
|
|
extern const struct inode_operations f2fs_dir_inode_operations;
|
|
extern const struct inode_operations f2fs_symlink_inode_operations;
|
|
extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
|
|
extern const struct inode_operations f2fs_special_inode_operations;
|
|
extern struct kmem_cache *f2fs_inode_entry_slab;
|
|
|
|
/*
|
|
* inline.c
|
|
*/
|
|
bool f2fs_may_inline_data(struct inode *inode);
|
|
bool f2fs_may_inline_dentry(struct inode *inode);
|
|
void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
|
|
void f2fs_truncate_inline_inode(struct inode *inode,
|
|
struct page *ipage, u64 from);
|
|
int f2fs_read_inline_data(struct inode *inode, struct page *page);
|
|
int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
|
|
int f2fs_convert_inline_inode(struct inode *inode);
|
|
int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
|
|
int f2fs_write_inline_data(struct inode *inode, struct page *page);
|
|
int f2fs_recover_inline_data(struct inode *inode, struct page *npage);
|
|
struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
|
|
const struct f2fs_filename *fname,
|
|
struct page **res_page);
|
|
int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
|
|
struct page *ipage);
|
|
int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
|
|
struct inode *inode, nid_t ino, umode_t mode);
|
|
void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
|
|
struct page *page, struct inode *dir,
|
|
struct inode *inode);
|
|
bool f2fs_empty_inline_dir(struct inode *dir);
|
|
int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
|
|
struct fscrypt_str *fstr);
|
|
int f2fs_inline_data_fiemap(struct inode *inode,
|
|
struct fiemap_extent_info *fieinfo,
|
|
__u64 start, __u64 len);
|
|
|
|
/*
|
|
* shrinker.c
|
|
*/
|
|
unsigned long f2fs_shrink_count(struct shrinker *shrink,
|
|
struct shrink_control *sc);
|
|
unsigned long f2fs_shrink_scan(struct shrinker *shrink,
|
|
struct shrink_control *sc);
|
|
void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
|
|
void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
|
|
|
|
/*
|
|
* extent_cache.c
|
|
*/
|
|
struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
|
|
struct rb_entry *cached_re, unsigned int ofs);
|
|
struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi,
|
|
struct rb_root_cached *root,
|
|
struct rb_node **parent,
|
|
unsigned long long key, bool *left_most);
|
|
struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
|
|
struct rb_root_cached *root,
|
|
struct rb_node **parent,
|
|
unsigned int ofs, bool *leftmost);
|
|
struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
|
|
struct rb_entry *cached_re, unsigned int ofs,
|
|
struct rb_entry **prev_entry, struct rb_entry **next_entry,
|
|
struct rb_node ***insert_p, struct rb_node **insert_parent,
|
|
bool force, bool *leftmost);
|
|
bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
|
|
struct rb_root_cached *root, bool check_key);
|
|
unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
|
|
void f2fs_init_extent_tree(struct inode *inode, struct page *ipage);
|
|
void f2fs_drop_extent_tree(struct inode *inode);
|
|
unsigned int f2fs_destroy_extent_node(struct inode *inode);
|
|
void f2fs_destroy_extent_tree(struct inode *inode);
|
|
bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
|
|
struct extent_info *ei);
|
|
void f2fs_update_extent_cache(struct dnode_of_data *dn);
|
|
void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
|
|
pgoff_t fofs, block_t blkaddr, unsigned int len);
|
|
void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
|
|
int __init f2fs_create_extent_cache(void);
|
|
void f2fs_destroy_extent_cache(void);
|
|
|
|
/*
|
|
* sysfs.c
|
|
*/
|
|
int __init f2fs_init_sysfs(void);
|
|
void f2fs_exit_sysfs(void);
|
|
int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
|
|
void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
|
|
|
|
/* verity.c */
|
|
extern const struct fsverity_operations f2fs_verityops;
|
|
|
|
/*
|
|
* crypto support
|
|
*/
|
|
static inline bool f2fs_encrypted_file(struct inode *inode)
|
|
{
|
|
return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
|
|
}
|
|
|
|
static inline void f2fs_set_encrypted_inode(struct inode *inode)
|
|
{
|
|
#ifdef CONFIG_FS_ENCRYPTION
|
|
file_set_encrypt(inode);
|
|
f2fs_set_inode_flags(inode);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Returns true if the reads of the inode's data need to undergo some
|
|
* postprocessing step, like decryption or authenticity verification.
|
|
*/
|
|
static inline bool f2fs_post_read_required(struct inode *inode)
|
|
{
|
|
return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
|
|
f2fs_compressed_file(inode);
|
|
}
|
|
|
|
/*
|
|
* compress.c
|
|
*/
|
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
|
bool f2fs_is_compressed_page(struct page *page);
|
|
struct page *f2fs_compress_control_page(struct page *page);
|
|
int f2fs_prepare_compress_overwrite(struct inode *inode,
|
|
struct page **pagep, pgoff_t index, void **fsdata);
|
|
bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
|
|
pgoff_t index, unsigned copied);
|
|
int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock);
|
|
void f2fs_compress_write_end_io(struct bio *bio, struct page *page);
|
|
bool f2fs_is_compress_backend_ready(struct inode *inode);
|
|
int f2fs_init_compress_mempool(void);
|
|
void f2fs_destroy_compress_mempool(void);
|
|
void f2fs_end_read_compressed_page(struct page *page, bool failed);
|
|
bool f2fs_cluster_is_empty(struct compress_ctx *cc);
|
|
bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index);
|
|
void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page);
|
|
int f2fs_write_multi_pages(struct compress_ctx *cc,
|
|
int *submitted,
|
|
struct writeback_control *wbc,
|
|
enum iostat_type io_type);
|
|
int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index);
|
|
int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
|
|
unsigned nr_pages, sector_t *last_block_in_bio,
|
|
bool is_readahead, bool for_write);
|
|
struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
|
|
void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed);
|
|
void f2fs_put_page_dic(struct page *page);
|
|
int f2fs_init_compress_ctx(struct compress_ctx *cc);
|
|
void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
|
|
void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
|
|
int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi);
|
|
void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi);
|
|
int __init f2fs_init_compress_cache(void);
|
|
void f2fs_destroy_compress_cache(void);
|
|
#else
|
|
static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
|
|
static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
|
|
{
|
|
if (!f2fs_compressed_file(inode))
|
|
return true;
|
|
/* not support compression */
|
|
return false;
|
|
}
|
|
static inline struct page *f2fs_compress_control_page(struct page *page)
|
|
{
|
|
WARN_ON_ONCE(1);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
static inline int f2fs_init_compress_mempool(void) { return 0; }
|
|
static inline void f2fs_destroy_compress_mempool(void) { }
|
|
static inline void f2fs_end_read_compressed_page(struct page *page, bool failed)
|
|
{
|
|
WARN_ON_ONCE(1);
|
|
}
|
|
static inline void f2fs_put_page_dic(struct page *page)
|
|
{
|
|
WARN_ON_ONCE(1);
|
|
}
|
|
static inline int f2fs_init_page_array_cache(struct f2fs_sb_info *sbi) { return 0; }
|
|
static inline void f2fs_destroy_page_array_cache(struct f2fs_sb_info *sbi) { }
|
|
static inline int __init f2fs_init_compress_cache(void) { return 0; }
|
|
static inline void f2fs_destroy_compress_cache(void) { }
|
|
#endif
|
|
|
|
static inline void set_compress_context(struct inode *inode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
|
|
F2FS_I(inode)->i_compress_algorithm =
|
|
F2FS_OPTION(sbi).compress_algorithm;
|
|
F2FS_I(inode)->i_log_cluster_size =
|
|
F2FS_OPTION(sbi).compress_log_size;
|
|
F2FS_I(inode)->i_compress_flag =
|
|
F2FS_OPTION(sbi).compress_chksum ?
|
|
1 << COMPRESS_CHKSUM : 0;
|
|
F2FS_I(inode)->i_cluster_size =
|
|
1 << F2FS_I(inode)->i_log_cluster_size;
|
|
if (F2FS_I(inode)->i_compress_algorithm == COMPRESS_LZ4 &&
|
|
F2FS_OPTION(sbi).compress_level)
|
|
F2FS_I(inode)->i_compress_flag |=
|
|
F2FS_OPTION(sbi).compress_level <<
|
|
COMPRESS_LEVEL_OFFSET;
|
|
F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
|
|
set_inode_flag(inode, FI_COMPRESSED_FILE);
|
|
stat_inc_compr_inode(inode);
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline bool f2fs_disable_compressed_file(struct inode *inode)
|
|
{
|
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
|
|
|
if (!f2fs_compressed_file(inode))
|
|
return true;
|
|
if (S_ISREG(inode->i_mode) &&
|
|
(get_dirty_pages(inode) || atomic_read(&fi->i_compr_blocks)))
|
|
return false;
|
|
|
|
fi->i_flags &= ~F2FS_COMPR_FL;
|
|
stat_dec_compr_inode(inode);
|
|
clear_inode_flag(inode, FI_COMPRESSED_FILE);
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
return true;
|
|
}
|
|
|
|
#define F2FS_FEATURE_FUNCS(name, flagname) \
|
|
static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
|
|
{ \
|
|
return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
|
|
}
|
|
|
|
F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
|
|
F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
|
|
F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
|
|
F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
|
|
F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
|
|
F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
|
|
F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
|
|
F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
|
|
F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
|
|
F2FS_FEATURE_FUNCS(verity, VERITY);
|
|
F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
|
|
F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
|
|
F2FS_FEATURE_FUNCS(compression, COMPRESSION);
|
|
|
|
#ifdef CONFIG_BLK_DEV_ZONED
|
|
static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
|
|
block_t blkaddr)
|
|
{
|
|
unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
|
|
|
|
return test_bit(zno, FDEV(devi).blkz_seq);
|
|
}
|
|
#endif
|
|
|
|
static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
|
|
{
|
|
return f2fs_sb_has_blkzoned(sbi);
|
|
}
|
|
|
|
static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
|
|
{
|
|
return blk_queue_discard(bdev_get_queue(bdev)) ||
|
|
bdev_is_zoned(bdev);
|
|
}
|
|
|
|
static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
|
|
{
|
|
int i;
|
|
|
|
if (!f2fs_is_multi_device(sbi))
|
|
return f2fs_bdev_support_discard(sbi->sb->s_bdev);
|
|
|
|
for (i = 0; i < sbi->s_ndevs; i++)
|
|
if (f2fs_bdev_support_discard(FDEV(i).bdev))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
|
|
{
|
|
return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
|
|
f2fs_hw_should_discard(sbi);
|
|
}
|
|
|
|
static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
|
|
{
|
|
int i;
|
|
|
|
if (!f2fs_is_multi_device(sbi))
|
|
return bdev_read_only(sbi->sb->s_bdev);
|
|
|
|
for (i = 0; i < sbi->s_ndevs; i++)
|
|
if (bdev_read_only(FDEV(i).bdev))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi)
|
|
{
|
|
return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS;
|
|
}
|
|
|
|
static inline bool f2fs_may_compress(struct inode *inode)
|
|
{
|
|
if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) ||
|
|
f2fs_is_atomic_file(inode) ||
|
|
f2fs_is_volatile_file(inode))
|
|
return false;
|
|
return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode);
|
|
}
|
|
|
|
static inline void f2fs_i_compr_blocks_update(struct inode *inode,
|
|
u64 blocks, bool add)
|
|
{
|
|
int diff = F2FS_I(inode)->i_cluster_size - blocks;
|
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
|
|
|
/* don't update i_compr_blocks if saved blocks were released */
|
|
if (!add && !atomic_read(&fi->i_compr_blocks))
|
|
return;
|
|
|
|
if (add) {
|
|
atomic_add(diff, &fi->i_compr_blocks);
|
|
stat_add_compr_blocks(inode, diff);
|
|
} else {
|
|
atomic_sub(diff, &fi->i_compr_blocks);
|
|
stat_sub_compr_blocks(inode, diff);
|
|
}
|
|
f2fs_mark_inode_dirty_sync(inode, true);
|
|
}
|
|
|
|
static inline int block_unaligned_IO(struct inode *inode,
|
|
struct kiocb *iocb, struct iov_iter *iter)
|
|
{
|
|
unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
|
|
unsigned int blocksize_mask = (1 << i_blkbits) - 1;
|
|
loff_t offset = iocb->ki_pos;
|
|
unsigned long align = offset | iov_iter_alignment(iter);
|
|
|
|
return align & blocksize_mask;
|
|
}
|
|
|
|
static inline int allow_outplace_dio(struct inode *inode,
|
|
struct kiocb *iocb, struct iov_iter *iter)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
int rw = iov_iter_rw(iter);
|
|
|
|
return (f2fs_lfs_mode(sbi) && (rw == WRITE) &&
|
|
!block_unaligned_IO(inode, iocb, iter));
|
|
}
|
|
|
|
static inline bool f2fs_force_buffered_io(struct inode *inode,
|
|
struct kiocb *iocb, struct iov_iter *iter)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
|
int rw = iov_iter_rw(iter);
|
|
|
|
if (f2fs_post_read_required(inode))
|
|
return true;
|
|
if (f2fs_is_multi_device(sbi))
|
|
return true;
|
|
/*
|
|
* for blkzoned device, fallback direct IO to buffered IO, so
|
|
* all IOs can be serialized by log-structured write.
|
|
*/
|
|
if (f2fs_sb_has_blkzoned(sbi))
|
|
return true;
|
|
if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
|
|
if (block_unaligned_IO(inode, iocb, iter))
|
|
return true;
|
|
if (F2FS_IO_ALIGNED(sbi))
|
|
return true;
|
|
}
|
|
if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
|
|
!IS_SWAPFILE(inode))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx)
|
|
{
|
|
return fsverity_active(inode) &&
|
|
idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE);
|
|
}
|
|
|
|
#ifdef CONFIG_F2FS_FAULT_INJECTION
|
|
extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
|
|
unsigned int type);
|
|
#else
|
|
#define f2fs_build_fault_attr(sbi, rate, type) do { } while (0)
|
|
#endif
|
|
|
|
static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
|
|
{
|
|
#ifdef CONFIG_QUOTA
|
|
if (f2fs_sb_has_quota_ino(sbi))
|
|
return true;
|
|
if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
|
|
F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
|
|
F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
|
|
return true;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
#define EFSBADCRC EBADMSG /* Bad CRC detected */
|
|
#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
|
|
|
|
#endif /* _LINUX_F2FS_H */
|