linux-stable/fs/ext4
Baokun Li 51cef2a5c6 ext4: using nofail preallocation in ext4_es_remove_extent()
[ Upstream commit e9fe2b882b ]

If __es_remove_extent() returns an error it means that when splitting
extent, allocating an extent that must be kept failed, where returning
an error directly would cause the extent tree to be inconsistent. So we
use GFP_NOFAIL to pre-allocate an extent_status and pass it to
__es_remove_extent() to avoid this problem.

In addition, since the allocated memory is outside the i_es_lock, the
extent_status tree may change and the pre-allocated extent_status is
no longer needed, so we release the pre-allocated extent_status when
es->es_len is not initialized.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230424033846.4732-7-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Stable-dep-of: 8e387c89e9 ("ext4: make sure allocate pending entry not fail")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-03 07:32:10 +01:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c fs/ext4: fix comments mentioning i_mutex 2022-02-03 10:57:53 -05:00
acl.h ext4: apply umask if ACL support is disabled 2023-11-28 17:07:21 +00:00
balloc.c ext4: add correct group descriptors and reserved GDT blocks to system zone 2023-09-19 12:28:05 +02:00
bitmap.c
block_validity.c ext4: add correct group descriptors and reserved GDT blocks to system zone 2023-09-19 12:28:05 +02:00
crypto.c ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup} 2023-09-19 12:28:05 +02:00
dir.c ext4: fix spelling errors in comments 2022-05-11 15:19:06 -04:00
ext4.h ext4: add correct group descriptors and reserved GDT blocks to system zone 2023-09-19 12:28:05 +02:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c ext4: use ext4_debug() instead of jbd_debug() 2022-08-02 23:52:19 -04:00
ext4_jbd2.h fs/ext4: fix comments mentioning i_mutex 2022-02-03 10:57:53 -05:00
extents.c ext4: move 'ix' sanity check to corrent position 2023-11-20 11:52:06 +01:00
extents_status.c ext4: using nofail preallocation in ext4_es_remove_extent() 2023-12-03 07:32:10 +01:00
extents_status.h
fast_commit.c ext4: use ext4_fc_tl_mem in fast-commit replay path 2023-03-11 13:55:22 +01:00
fast_commit.h ext4: add missing validation of fast-commit record lengths 2023-01-07 11:12:00 +01:00
file.c ext4: properly sync file size update after O_SYNC direct IO 2023-11-28 17:07:22 +00:00
fsmap.c ext4: fix another off-by-one fsmap error on 1k block filesystems 2023-03-17 08:50:16 +01:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c
hash.c ext4: improve error handling from ext4_dirhash() 2023-05-17 11:53:58 +02:00
ialloc.c ext4: allow ext4_get_group_info() to fail 2023-05-24 17:32:33 +01:00
indirect.c ext4: only update i_reserved_data_blocks on successful block allocation 2023-07-23 13:49:34 +02:00
inline.c ext4: bail out of ext4_xattr_ibody_get() fails for any reason 2023-05-17 11:53:58 +02:00
inode-test.c
inode.c ext4: mark buffer new if it is unwritten to avoid stale data exposure 2023-11-28 17:07:21 +00:00
ioctl.c ext4: fix to check return value of freeze_bdev() in ext4_shutdown() 2023-07-23 13:49:34 +02:00
Kconfig ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it 2021-02-11 23:12:59 -05:00
Makefile ext4: move ext4 crypto code to its own file crypto.c 2022-05-21 22:24:24 -04:00
mballoc.c ext4: avoid overlapping preallocations due to overflow 2023-11-02 09:35:32 +01:00
mballoc.h ext4: add two helper functions extent_logical_end() and pa_logical_end() 2023-11-02 09:35:32 +01:00
migrate.c ext4: fix warning in 'ext4_da_release_space' 2022-11-06 01:07:59 -04:00
mmp.c ext4: reflect error codes from ext4_multi_mount_protect() to its callers 2023-05-24 17:32:33 +01:00
move_extent.c ext4: factor out ext4_free_ext_path() 2022-09-30 23:46:54 -04:00
namei.c ext4: fix rec_len verify error 2023-09-23 11:11:12 +02:00
orphan.c ext4: remove trailing newline from ext4_msg() message 2023-01-07 11:11:58 +01:00
page-io.c ext4: fix cgroup writeback accounting with fs-layer encryption 2023-03-17 08:50:16 +01:00
readpage.c fscrypt: stop using PG_error to track error status 2022-09-06 15:15:56 -07:00
resize.c ext4: add missed brelse in update_backups 2023-11-28 17:07:21 +00:00
super.c ext4: turn quotas off if mount failed after enabling quotas 2023-07-23 13:49:34 +02:00
symlink.c ext4: fix reading leftover inlined symlinks 2022-08-02 23:37:50 -04:00
sysfs.c ext4: Fix function prototype mismatch for ext4_feat_ktype 2023-02-25 11:25:43 +01:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c fs: ext4: initialize fsdata in pagecache_write() 2023-01-07 11:11:58 +01:00
xattr.c ext4: correct inline offset when handling xattrs in inode body 2023-07-27 08:50:31 +02:00
xattr.h ext4: remove EA inode entry from mbcache on inode eviction 2022-08-02 23:56:25 -04:00
xattr_hurd.c
xattr_security.c
xattr_trusted.c
xattr_user.c