Josef Bacik ef7cf3c923 btrfs: do not panic if we can't allocate a prealloc extent state ... [ Upstream commit 5a75034e71 ] We sometimes have to allocate new extent states when clearing or setting new bits in an extent io tree. Generally we preallocate this before taking the tree spin lock, but we can use this preallocated extent state sometimes and then need to try to do a GFP_ATOMIC allocation under the lock. Unfortunately sometimes this fails, and then we hit the BUG_ON() and bring the box down. This happens roughly 20 times a week in our fleet. However the vast majority of callers use GFP_NOFS, which means that if this GFP_ATOMIC allocation fails, we could simply drop the spin lock, go back and allocate a new extent state with our given gfp mask, and begin again from where we left off. For the remaining callers that do not use GFP_NOFS, they are generally using GFP_NOWAIT, which still allows for some reclaim. So allow these allocations to attempt to happen outside of the spin lock so we don't need to rely on GFP_ATOMIC allocations. This in essence creates an infinite loop for anything that isn't GFP_NOFS. To address this we may want to migrate to using mempools for extent states so that we will always have emergency reserves in order to make our allocations. Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-31 13:32:58 +01:00
..
9p	9p: Fix some kernel-doc comments	2022-07-02 18:52:21 +09:00
adfs	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
affs	affs: move from strlcpy with unused retval to strscpy	2022-08-19 13:03:10 +02:00
afs	afs: Fix server->active leak in afs_put_server	2022-11-30 10:02:37 -08:00
autofs	autofs: remove unused ino field inode	2022-07-17 17:31:42 -07:00
befs	befs: Convert befs_symlink_read_folio() to use a folio	2022-08-02 12:34:03 -04:00
bfs	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
btrfs	btrfs: do not panic if we can't allocate a prealloc extent state	2022-12-31 13:32:58 +01:00
cachefiles	cachefiles: use vfs_tmpfile_open() helper	2022-09-24 07:00:00 +02:00
ceph	ceph: fix NULL pointer dereference for req->r_session	2022-11-14 10:29:05 +01:00
cifs	cifs: don't leak -ENOMEM in smb2_open_file()	2022-12-31 13:32:56 +01:00
coda	coda: Convert coda_symlink_filler() to use a folio	2022-08-02 12:34:03 -04:00
configfs	configfs: fix possible memory leak in configfs_create_dir()	2022-12-31 13:32:22 +01:00
cramfs	cramfs: read_mapping_page() is synchronous	2022-08-02 12:34:02 -04:00
crypto	fscrypt: fix keyring memory leak on mount failure	2022-10-19 20:54:43 -07:00
debugfs	debugfs: fix error when writing negative value to atomic_t debugfs file	2022-12-31 13:31:58 +01:00
devpts
dlm	Networking changes for 6.1.	2022-10-04 13:38:03 -07:00
ecryptfs	whack-a-mole: constifying struct path *	2022-10-06 17:31:02 -07:00
efivarfs	efi: efivars: Fix variable writes without query_variable_store()	2022-10-21 11:09:40 +02:00
efs	efs: Convert efs symlinks to read_folio	2022-05-09 16:21:45 -04:00
erofs	erofs: validate the extent length for uncompressed pclusters	2022-12-31 13:31:59 +01:00
exfat	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
exportfs	Change calling conventions for filldir_t	2022-08-17 17:25:04 -04:00
ext2	treewide: use prandom_u32_max() when possible, part 2	2022-10-11 17:42:58 -06:00
ext4	ext4: fix use-after-free in ext4_ext_shift_extents	2022-11-07 12:53:43 -05:00
f2fs	f2fs: fix iostat parameter for discard	2022-12-31 13:32:38 +01:00
fat	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
freevxfs	freevxfs: Convert vxfs_immed_read_folio() to use a folio	2022-08-02 12:34:03 -04:00
fscache	fscache: Fix oops due to race with cookie_lru and use_cookie	2022-12-07 11:49:18 -08:00
fuse	fuse: lock inode unconditionally in fuse_fallocate()	2022-11-23 09:10:42 +01:00
gfs2	gfs2: Partially revert gfs2_inode_lookup change	2022-12-31 13:32:45 +01:00
hfs	hfs: Fix OOB Write in hfs_asc2mac	2022-12-31 13:32:00 +01:00
hfsplus	hfsplus: convert kmap() to kmap_local_page() in btree.c	2022-09-11 21:55:05 -07:00
hostfs	hostfs: move from strlcpy with unused retval to strscpy	2022-09-19 22:46:25 +02:00
hpfs	hpfs: Convert symlinks to read_folio	2022-05-09 16:21:45 -04:00
hugetlbfs	hugetlbfs: don't delete error page from pagecache	2022-11-08 15:57:22 -08:00
iomap	iomap: add a tracepoint for mappings returned by map_blocks	2022-10-02 11:42:19 -07:00
isofs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
jbd2	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
jffs2	mtd: always initialize 'stats' in struct mtd_oob_ops	2022-09-21 10:38:07 +02:00
jfs	fs: jfs: fix shift-out-of-bounds in dbDiscardAG	2022-12-31 13:32:57 +01:00
kernfs	kernfs: Fix spurious lockdep warning in kernfs_find_and_get_node_by_id()	2022-11-10 19:03:42 +01:00
ksmbd	ksmbd: Fix resource leak in ksmbd_session_rpc_open()	2022-12-31 13:32:42 +01:00
lockd	lockd: set other missing fields when unlocking files	2022-12-31 13:32:00 +01:00
minix	vfs: open inside ->tmpfile()	2022-09-24 07:00:00 +02:00
netfs	netfs: Fix dodgy maths	2022-11-15 16:56:07 +00:00
nfs	NFSv4.x: Fail client initialisation if state manager thread can't run	2022-12-31 13:32:23 +01:00
nfs_common
nfsd	nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure	2022-12-31 13:32:53 +01:00
nilfs2	nilfs2: fix shift-out-of-bounds due to too large exponent of block size	2022-12-31 13:32:58 +01:00
nls
notify	Merge tag 'fsnotify-for_v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2022-10-07 08:28:50 -07:00
ntfs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
ntfs3	fs/ntfs3: Fix slab-out-of-bounds read in ntfs_trim_fs	2022-12-31 13:32:49 +01:00
ocfs2	ocfs2: fix memory leak in ocfs2_mount_volume()	2022-12-31 13:31:58 +01:00
omfs	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
openpromfs
orangefs	orangefs: Fix sysfs not cleanup when dev init failed	2022-12-31 13:32:37 +01:00
overlayfs	ovl: remove privs in ovl_fallocate()	2022-12-31 13:31:54 +01:00
proc	proc/meminfo: fix spacing in SecPageTables	2022-11-22 18:50:44 -08:00
pstore	pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP	2022-12-31 13:31:54 +01:00
qnx4	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
qnx6	fs/qnx6: delete unnecessary checks before brelse()	2022-09-11 21:55:07 -07:00
quota	quota: Add more checking after reading from quota file	2022-09-29 15:37:30 +02:00
ramfs	tmpfile API change	2022-10-10 19:45:17 -07:00
reiserfs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
romfs	romfs: Convert romfs to read_folio	2022-05-09 16:21:46 -04:00
smbfs_common	smb3: define missing create contexts	2022-10-05 01:55:27 -05:00
squashfs	squashfs: fix buffer release race condition in readahead code	2022-10-28 13:37:21 -07:00
sysfs
sysv	fs: sysv: Fix sysv_nblocks() returns wrong value	2022-12-31 13:32:00 +01:00
tracefs	tracefs: Only clobber mode/uid/gid on remount if asked	2022-09-08 17:10:54 -04:00
ubifs	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
udf	udf: Avoid double brelse() in udf_rename()	2022-12-31 13:32:57 +01:00
ufs	ufs: replace ll_rw_block()	2022-09-11 20:26:07 -07:00
unicode
vboxsf	vboxsf: Convert vboxsf to read_folio	2022-05-09 16:21:46 -04:00
verity	for-6.1-tag	2022-10-06 17:36:48 -07:00
xfs	xfs: rename XFS_REFC_COW_START to _COWFLAG	2022-10-31 08:58:22 -07:00
zonefs	zonefs: Fix active zone accounting	2022-11-25 17:01:22 +09:00
aio.c	aio: use atomic_try_cmpxchg in __get_reqs_available	2022-09-11 21:55:08 -07:00
anon_inodes.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
attr.c	vfs: Check the truncate maximum size in inode_newsize_ok()	2022-08-08 10:39:29 -07:00
bad_inode.c	vfs: open inside ->tmpfile()	2022-09-24 07:00:00 +02:00
binfmt_elf.c	fs/binfmt_elf: Fix memory leak in load_elf_binary()	2022-10-25 15:11:21 -07:00
binfmt_elf_fdpic.c
binfmt_elf_test.c
binfmt_flat.c	binfmt_flat: Remove shared library support	2022-04-22 10:57:18 -07:00
binfmt_misc.c	binfmt_misc: fix shift-out-of-bounds in check_special_flags	2022-12-31 13:32:57 +01:00
binfmt_script.c
buffer.c	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
char_dev.c	chardev: fix error handling in cdev_device_add()	2022-12-31 13:32:41 +01:00
compat_binfmt_elf.c
coredump.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
d_path.c	d_path.c: typo fix...	2022-08-20 11:34:33 -04:00
dax.c	Merge branch 'for-6.0/dax' into libnvdimm-fixes	2022-09-24 18:14:12 -07:00
dcache.c	tmpfile API change	2022-10-10 19:45:17 -07:00
direct-io.c	block: remove PSI accounting from the bio layer	2022-09-20 08:24:38 -06:00
drop_caches.c
eventfd.c	eventfd: guard wake_up in eventfd fs calls as well	2022-09-21 10:30:42 -06:00
eventpoll.c	epoll: use try_cmpxchg in list_add_tail_lockless	2022-09-11 21:55:07 -07:00
exec.c	23 hotfixes.	2022-10-29 17:49:33 -07:00
fcntl.c	keep iocb_flags() result cached in struct file	2022-06-10 16:10:23 -04:00
fhandle.c	do_sys_name_to_handle(): constify path	2022-09-01 17:36:39 -04:00
file.c	fs: use acquire ordering in __fget_light()	2022-10-31 15:30:11 -04:00
file_table.c	locks: fix TOCTOU race when granting write lease	2022-08-16 10:59:54 -04:00
filesystems.c
fs-writeback.c	fs: do not update freeing inode i_io_list	2022-11-22 17:00:00 -05:00
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c	uninline may_mount() and don't opencode it in fspick(2)/fsopen(2)	2022-05-19 23:25:10 -04:00
init.c
inode.c	saner inode_init_always()	2022-10-06 16:49:00 -07:00
internal.h	whack-a-mole: constifying struct path *	2022-10-06 17:31:02 -07:00
ioctl.c
Kconfig	hugetlb: make hugetlb depends on SYSFS or SYSCTL	2022-09-11 20:26:10 -07:00
Kconfig.binfmt	Xtensa updates for v6.1	2022-10-10 14:21:11 -07:00
kernel_read_file.c	fs/kernel_read_file: allow to read files up-to ssize_t	2022-06-16 19:58:21 -07:00
libfs.c	libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value	2022-12-31 13:31:58 +01:00
locks.c	locks: Fix dropped call to ->fl_release_private()	2022-08-17 15:08:58 -04:00
Makefile	a.out: Remove the a.out implementation	2022-09-27 07:11:02 -07:00
mbcache.c	mbcache: Avoid nesting of cache->c_list_lock under bit locks	2022-09-30 23:46:52 -04:00
mount.h	switch try_to_unlazy_next() to __legitimize_mnt()	2022-07-05 16:18:21 -04:00
mpage.c	Folio changes for 6.0	2022-08-03 10:35:43 -07:00
namei.c	vfs: vfs_tmpfile: ensure O_EXCL flag is enforced	2022-11-19 02:22:11 -05:00
namespace.c	fs: require CAP_SYS_ADMIN in target namespace for idmapped mounts	2022-08-17 11:27:11 +02:00
no-block.c
nsfs.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
open.c	struct file-related stuff	2022-10-06 17:13:18 -07:00
pipe.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
pnode.c
pnode.h
posix_acl.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
proc_namespace.c	vfs: escape hash as well	2022-06-28 13:58:05 -04:00
read_write.c	vfs: fix copy_file_range() averts filesystem freeze protection	2022-11-25 00:52:28 -05:00
readdir.c	Change calling conventions for filldir_t	2022-08-17 17:25:04 -04:00
remap_range.c	- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe	2022-08-05 16:32:45 -07:00
select.c
seq_file.c	rxrpc: Fix locking issue	2022-05-22 21:03:01 +01:00
signalfd.c
splice.c	iter_to_pipe(): switch to advancing variant of iov_iter_get_pages()	2022-08-08 22:37:23 -04:00
stack.c
stat.c	vfs: support STATX_DIOALIGN on block devices	2022-09-11 19:47:12 -05:00
statfs.c
super.c	fscrypt: fix keyring memory leak on mount failure	2022-10-19 20:54:43 -07:00
sync.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
sysctls.c
timerfd.c
userfaultfd.c	fs/userfaultfd: Fix maple tree iterator in userfaultfd_unregister()	2022-11-07 12:58:26 -08:00
utimes.c
xattr.c	fs: don't audit the capability check in simple_xattr_list()	2022-12-31 13:31:55 +01:00