kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-26 19:14:18 +00:00
Code Issues Releases Packages Activity
linux/fs/ext4
History
Baokun Li 785ac69911 ext4: do not convert the unwritten extents if data writeback fails 
[ Upstream commit e856f93e0f ]

When dioread_nolock is turned on (the default), it will convert unwritten
extents to written at ext4_end_io_end(), even if the data writeback fails.

It leads to the possibility that stale data may be exposed when the
physical block corresponding to the file data is read-only (i.e., writes
return -EIO, but reads are normal).

Therefore a new ext4_io_end->flags EXT4_IO_END_FAILED is added, which
indicates that some bio write-back failed in the current ext4_io_end.
When this flag is set, the unwritten to written conversion is no longer
performed. Users can read the data normally until the caches are dropped,
after that, the failed extents can only be read to all 0.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250122110533.4116662-3-libaokun@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-05-29 11:02:19 +02:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c ext4: convert to ctime accessor functions 2023-07-24 10:29:54 +02:00
acl.h Revert "ext4: apply umask if ACL support is disabled" 2024-05-02 18:25:39 -04:00
balloc.c ext4: reorder capability check last 2025-05-29 11:02:15 +02:00
bitmap.c ext4: move checksum length calculation of inode bitmap into ext4_inode_bitmap_csum_[verify/set]() functions 2024-09-03 22:12:15 -04:00
block_validity.c ext4: make block validity check resistent to sb bh corruption 2025-05-02 07:59:25 +02:00
crypto.c ext4: Move CONFIG_UNICODE defguards into the code flow 2024-06-07 17:00:45 +02:00
dir.c ext4: fix OOB read when checking dotdot dir 2025-04-10 14:39:39 +02:00
ext4.h ext4: do not convert the unwritten extents if data writeback fails 2025-05-29 11:02:19 +02:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c use ->bd_mapping instead of ->bd_inode->i_mapping 2024-05-03 02:36:51 -04:00
ext4_jbd2.h ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
extents.c ext4: partial zero eof block on unaligned inode size extension 2024-12-14 20:03:36 +01:00
extents_status.c ext4: drop all delonly descriptions 2024-09-02 15:26:15 -04:00
extents_status.h ext4: drop ext4_es_is_delonly() 2024-09-02 15:26:14 -04:00
fast_commit.c ext4: use handle to mark fc as ineligible in __track_dentry_update() 2024-10-04 17:35:54 -04:00
fast_commit.h ext4: add missing validation of fast-commit record lengths 2022-12-08 21:49:24 -05:00
file.c ext4: dax: keep orphan list before truncate overflow allocated blocks 2024-09-03 22:14:16 -04:00
fsmap.c ext4: fix FS_IOC_GETFSMAP handling 2024-12-05 14:02:41 +01:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c ext4: drop EXT4_MF_FS_ABORTED flag 2023-07-29 18:37:53 -04:00
hash.c ext4: remove redundant checks of s_encoding 2023-08-27 11:27:13 -04:00
ialloc.c ext4: fix race in buffer_head read fault injection 2024-12-05 14:01:15 +01:00
indirect.c ext4: fix race in buffer_head read fault injection 2024-12-05 14:01:15 +01:00
inline.c Lots of cleanups and bug fixes this cycle, primarily in the block 2024-09-20 19:26:45 -07:00
inode-test.c ext4: add missing MODULE_DESCRIPTION() 2024-07-05 16:07:24 -04:00
inode.c ext4: goto right label 'out_mmap_sem' in ext4_setattr() 2025-05-02 07:59:31 +02:00
ioctl.c introduce fd_file(), convert all accessors to it. 2024-08-12 22:00:43 -04:00
Kconfig fs: add CONFIG_BUFFER_HEAD 2023-08-02 09:13:09 -06:00
Makefile ext4: move ext4 crypto code to its own file crypto.c 2022-05-21 22:24:24 -04:00
mballoc-test.c ext4: add test_mb_mark_used_cost to estimate cost of mb_mark_used 2024-05-03 00:12:32 -04:00
mballoc.c fs/ext4: use sleeping version of sb_find_get_block() 2025-05-29 11:02:00 +02:00
mballoc.h ext4: fix FS_IOC_GETFSMAP handling 2024-12-05 14:02:41 +01:00
migrate.c ext4: fix i_data_sem unlock order in ext4_ind_migrate() 2024-09-03 22:14:17 -04:00
mmp.c ext4: fix race in buffer_head read fault injection 2024-12-05 14:01:15 +01:00
move_extent.c ext4: fix race in buffer_head read fault injection 2024-12-05 14:01:15 +01:00
namei.c ext4: fix off-by-one error in do_split 2025-04-20 10:15:42 +02:00
orphan.c ext4: remove trailing newline from ext4_msg() message 2022-12-08 21:49:23 -05:00
page-io.c ext4: do not convert the unwritten extents if data writeback fails 2025-05-29 11:02:19 +02:00
readpage.c ext4: reduce stack usage in ext4_mpage_readpages() 2024-08-26 21:47:03 -04:00
resize.c ext4: fix race in buffer_head read fault injection 2024-12-05 14:01:15 +01:00
super.c ext4: reject the 'data_err=abort' option in nojournal mode 2025-05-29 11:02:19 +02:00
symlink.c ext4_get_link(): fix breakage in RCU mode 2024-02-25 02:10:32 -05:00
sysfs.c ext4: add positive int attr pointer to avoid sysfs variables overflow 2024-05-02 23:48:30 -04:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c fs: Convert aops->write_begin to take a folio 2024-08-07 11:33:21 +02:00
xattr.c ext4: ignore xattrs past end 2025-04-20 10:15:20 +02:00
xattr.h ext4: annotate struct ext4_xattr_inode_array with __counted_by() 2024-08-26 23:40:06 -04:00
xattr_hurd.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_security.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_trusted.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_user.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00