linux-stable/fs
Filipe Manana 7ecb4c31e7 btrfs: remove constraint on number of visited leaves when replacing extents
At btrfs_drop_extents(), we try to replace a range of file extent items
with a new file extent in a single btree search, to avoid the need to do
a search for deletion, followed by a path release and followed by yet
another search for insertion.

When I originally added that optimization, in commit 1acae57b16
("Btrfs: faster file extent item replace operations"), I left a constraint
to do the fast replace only if we visited a single leaf. That was because
in the most common case we find all file extent items that need to be
deleted (or trimmed) in a single leaf, however it can work for other
common cases like when we need to delete a few file extent items located
at the end of a leaf and a few more located at the beginning of the next
leaf. The key for the new file extent item is greater than the key of
any deleted or trimmed file extent item from previous leaves, so we are
fine to use the last leaf that we found as long as we are holding a
write lock on it - even if the new key ends up at slot 0, as if that's
the case, the btree search has obtained a write lock on any upper nodes
that need to have a key pointer updated.

So removed the constraint that limits the optimization to the case where
we visited only a single leaf.

This change if part of a patchset that is comprised of the following
patches:

  1/6 btrfs: remove unnecessary leaf free space checks when pushing items
  2/6 btrfs: avoid unnecessary COW of leaves when deleting items from a leaf
  3/6 btrfs: avoid unnecessary computation when deleting items from a leaf
  4/6 btrfs: remove constraint on number of visited leaves when replacing extents
  5/6 btrfs: remove useless path release in the fast fsync path
  6/6 btrfs: prepare extents to be logged before locking a log tree path

The last patch in the series has some performance test result in its
changelog.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-03-14 13:13:49 +01:00
..
9p Revert "fs/9p: search open fids first" 2022-01-30 22:13:37 +09:00
adfs fs/adfs: remove unneeded variable make code cleaner 2022-01-20 08:52:55 +02:00
affs affs: use bdev_nr_sectors instead of open coding it 2021-10-18 14:43:22 -06:00
afs afs: Fix potential thrashing in afs writeback 2022-03-11 10:24:37 -08:00
autofs autofs: fix wait name hash calculation in autofs_wait() 2021-10-20 21:09:02 -04:00
befs
bfs
btrfs btrfs: remove constraint on number of visited leaves when replacing extents 2022-03-14 13:13:49 +01:00
cachefiles cachefiles: Fix volume coherency attribute 2022-03-11 10:24:37 -08:00
ceph ceph: set pool_ns in new inode layout for async creates 2022-01-26 20:17:50 +01:00
cifs cifs: fix confusing unneeded warning message on smb2.1 and earlier 2022-02-16 17:16:49 -06:00
coda coda: bump module version to 7.2 2021-11-09 10:02:51 -08:00
configfs configfs: fix a race in configfs_{,un}register_subsystem() 2022-02-22 18:30:28 +01:00
cramfs cramfs: use bdev_nr_bytes instead of open coding it 2021-10-18 14:43:22 -06:00
crypto fscrypt: improve a few comments 2021-10-25 19:11:50 -07:00
debugfs debugfs: lockdown: Allow reading debugfs files that are not world readable 2022-01-06 15:47:41 +01:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-01-24 14:17:02 +01:00
dlm driver core changes for 5.17-rc1 2022-01-12 11:11:34 -08:00
ecryptfs fs: add is_idmapped_mnt() helper 2021-12-03 18:44:06 +01:00
efivarfs
efs
erofs erofs: fix ztailpacking on > 4GiB filesystems 2022-03-02 21:58:45 +08:00
exfat exfat: fix missing REQ_SYNC in exfat_update_bhs() 2022-01-10 11:00:04 +09:00
exportfs
ext2 fsdax: shift partition offset handling into the file systems 2021-12-04 08:58:54 -08:00
ext4 Various bug fixes for ext4 fast commit and inline data handling. Also 2022-02-06 10:34:45 -08:00
f2fs Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the 2022-02-01 11:13:24 -08:00
fat FAT: use io_schedule_timeout() instead of congestion_wait() 2022-01-20 08:52:54 +02:00
freevxfs
fscache fscache: Fix the volume collision wait condition 2022-01-21 21:36:28 +00:00
fuse fuse: fix pipe buffer lifetime for direct_io 2022-03-07 16:30:44 +01:00
gfs2 gfs2 fixes: 2022-02-11 11:36:32 -08:00
hfs Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
hfsplus hfsplus: use struct_group_attr() for memcpy() region 2022-01-20 08:52:54 +02:00
hostfs hostfs: Fix writeback of dirty pages 2021-12-21 21:44:27 +01:00
hpfs treewide: Replace open-coded flex arrays in unions 2021-10-18 12:28:53 -07:00
hugetlbfs hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list() 2022-01-15 16:30:30 +02:00
iomap xfs, iomap: limit individual ioend chain lengths in writeback 2022-01-26 09:19:20 -08:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-10-19 12:51:02 +02:00
jbd2 Various bug fixes for ext4 fast commit and inline data handling. Also 2022-02-06 10:34:45 -08:00
jffs2 Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
jfs Just one JFS patch 2021-11-03 09:23:25 -07:00
kernfs kernfs: prevent early freeing of root node 2021-12-03 14:36:21 +01:00
ksmbd ksmbd: add support for key exchange 2022-02-04 00:12:22 -06:00
lockd Notable bug fixes: 2022-02-02 10:14:31 -08:00
minix
netfs netfs: Make ops->init_rreq() optional 2022-01-21 21:36:28 +00:00
nfs NFS: Do not report writeback errors in nfs_getattr() 2022-02-16 15:15:22 -05:00
nfs_common nfs: Fix kerneldoc warning shown up by W=1 2021-10-04 22:02:17 +01:00
nfsd Notable bug fixes: 2022-02-09 09:56:57 -08:00
nilfs2 Merge branch 'akpm' (patches from Andrew) 2022-01-20 10:41:01 +02:00
nls
notify fanotify: Fix stale file descriptor in copy_event_to_user() 2022-02-01 12:52:07 +01:00
ntfs fs/ntfs/attrib.c: fix one kernel-doc comment 2022-01-15 16:30:24 +02:00
ntfs3 mm: remove cleancache 2022-01-22 08:33:38 +02:00
ocfs2 ocfs2: fix a deadlock when commit trans 2022-01-30 09:56:58 +02:00
omfs
openpromfs
orangefs orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() 2021-12-31 14:37:43 -05:00
overlayfs overlayfs fixes for 5.17-rc3 2022-02-01 11:23:02 -08:00
proc proc: fix documentation and description of pagemap 2022-03-05 11:08:33 -08:00
pstore pstore update for v5.17-rc1 2022-01-10 11:48:37 -08:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-21 08:36:48 -07:00
qnx6
quota quota: make dquot_quota_sync return errors from ->sync_fs 2022-01-30 08:59:47 -08:00
ramfs Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
reiserfs reiserfs: don't use congestion_wait() 2021-11-18 11:52:22 +01:00
romfs
smbfs_common smb3: add new defines from protocol specification 2022-01-18 16:50:47 -06:00
squashfs squashfs: provide backing_dev_info in order to disable read-ahead 2022-01-15 16:30:24 +02:00
sysfs fs/sysfs/dir.c: replace S_IRWXU|S_IRUGO|S_IXUGO with 0755 sysfs_create_dir_ns() 2021-10-05 16:35:05 +02:00
sysv sysv: use BUILD_BUG_ON instead of runtime check 2021-11-09 10:02:52 -08:00
tracefs tracefs: Set the group ownership in apply_options() not parse_options() 2022-02-25 21:05:04 -05:00
ubifs ubifs: read-only if LEB may always be taken in ubifs_garbage_collect 2021-12-23 22:30:38 +01:00
udf udf: Restore i_lenAlloc when inode expansion fails 2022-01-24 14:45:02 +01:00
ufs
unicode Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the 2022-02-01 11:13:24 -08:00
vboxsf vboxfs: fix broken legacy mount signature checking 2021-09-27 11:26:21 -07:00
verity fs-verity: fix signed integer overflow with i_size near S64_MAX 2021-09-22 10:56:34 -07:00
xfs Bug fixes for 5.17-rc4: 2022-02-26 09:53:19 -08:00
zonefs zonefs: add MODULE_ALIAS_FS 2021-12-17 16:56:35 +09:00
aio.c aio: move aio sysctl to aio.c 2022-01-22 08:33:34 +02:00
anon_inodes.c fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure() 2021-09-19 22:35:37 -04:00
attr.c fs: handle circular mappings correctly 2021-11-17 09:26:09 +01:00
bad_inode.c
binfmt_aout.c binfmt: a.out: Fix bogus semicolon 2021-09-05 10:15:05 -07:00
binfmt_elf.c binfmt_elf fix for v5.17-rc7 2022-03-01 11:31:37 -08:00
binfmt_elf_fdpic.c coredump: Limit coredumps to a single thread group 2021-10-08 12:06:02 -05:00
binfmt_flat.c
binfmt_misc.c Fix regression due to "fs: move binfmt_misc sysctl to its own file" 2022-02-09 09:50:02 -08:00
binfmt_script.c
buffer.c fs/buffer: Convert __block_write_begin_int() to take a folio 2021-12-16 15:49:51 -05:00
char_dev.c
compat_binfmt_elf.c
coredump.c fs/coredump: move coredump sysctls into its own file 2022-01-22 08:33:36 +02:00
d_path.c d_path: fix Kernel doc validator complaining 2021-11-06 13:30:32 -07:00
dax.c dax: remove the copy_from_iter and copy_to_iter methods 2021-12-18 08:04:53 -08:00
dcache.c fs: move dcache sysctls to its own file 2022-01-22 08:33:36 +02:00
direct-io.c fs: get rid of the res2 iocb->ki_complete argument 2021-10-25 10:36:24 -06:00
drop_caches.c fs: drop_caches: fix skipping over shadow cache inodes 2021-09-03 09:58:10 -07:00
eventfd.c eventfd: Export eventfd_wake_count to modules 2021-09-06 07:20:56 -04:00
eventpoll.c eventpoll: simplify sysctl declaration with register_sysctl() 2022-01-22 08:33:35 +02:00
exec.c fs/coredump: move coredump sysctls into its own file 2022-01-22 08:33:36 +02:00
fcntl.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
fhandle.c
file.c fget: clarify and improve __fget_files() implementation 2021-12-13 10:55:30 -08:00
file_table.c fs/file_table: fix adding missing kmemleak_not_leak() 2022-02-17 10:23:19 -08:00
filesystems.c
fs-writeback.c fscache rewrite 2022-01-12 13:45:12 -08:00
fs_context.c vfs: fs_context: fix up param length parsing in legacy_parse_param 2022-01-18 09:23:19 +02:00
fs_parser.c fs_parse: allow parameter value to be empty 2021-12-09 14:09:36 -05:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c fs: move inode sysctls to its own file 2022-01-22 08:33:35 +02:00
internal.h fs/buffer: Convert __block_write_begin_int() to take a folio 2021-12-16 15:49:51 -05:00
io-wq.c io_uring-5.17-2022-01-21 2022-01-21 16:07:21 +02:00
io-wq.h Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
io_uring.c io_uring: disallow modification of rsrc_data during quiesce 2022-02-22 09:57:32 -07:00
ioctl.c fs/ioctl: remove unnecessary __user annotation 2022-01-15 16:30:25 +02:00
Kconfig ksmbd: add support for key exchange 2022-02-04 00:12:22 -06:00
Kconfig.binfmt
kernel_read_file.c vfs: check fd has read access in kernel_read_file_from_fd() 2021-10-18 20:22:03 -10:00
libfs.c unicode: clean up the Kconfig symbol confusion 2022-01-20 19:57:24 -05:00
locks.c fs: move locking sysctls where they are used 2022-01-22 08:33:36 +02:00
Makefile Fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the 2022-02-01 11:13:24 -08:00
mbcache.c
mount.h
mpage.c mm: remove cleancache 2022-01-22 08:33:38 +02:00
namei.c \n 2022-01-28 17:51:31 +02:00
namespace.c fs: add kernel doc for mnt_{hold,unhold}_writers() 2022-02-14 08:35:32 +01:00
no-block.c
nsfs.c
open.c fs: support mapped mounts of mapped filesystems 2021-12-05 10:28:57 +01:00
pipe.c watch_queue: Fix lack of barrier/sync/lock between post and read 2022-03-11 10:17:13 -08:00
pnode.c
pnode.h
posix_acl.c fs: support mapped mounts of mapped filesystems 2021-12-05 10:28:57 +01:00
proc_namespace.c fs: add is_idmapped_mnt() helper 2021-12-03 18:44:06 +01:00
read_write.c fs: remove leftover comments from mandatory locking removal 2021-10-26 12:20:50 -04:00
readdir.c
remap_range.c fs: Convert vfs_dedupe_file_range_compare to folios 2022-01-08 00:28:41 -05:00
select.c select: Fix indefinitely sleeping task in poll_schedule_timeout() 2022-01-11 09:03:05 -08:00
seq_file.c seq_file: move seq_escape() to a header 2021-11-09 10:02:52 -08:00
signalfd.c Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
splice.c
stack.c
stat.c
statfs.c
super.c vfs: make freeze_super abort when sync_filesystem returns error 2022-01-30 08:59:47 -08:00
sync.c vfs: make sync_filesystem return errors from ->sync_fs 2022-01-30 08:59:47 -08:00
sysctls.c fs: move namespace sysctls and declare fs base directory 2022-01-22 08:33:36 +02:00
timerfd.c
userfaultfd.c mm: refactor vm_area_struct::anon_vma_name usage code 2022-03-05 11:08:32 -08:00
utimes.c
xattr.c