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| author | Wang Jianchao <wangjianchao@kuaishou.com> | 2021-08-30 15:52:46 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2021-08-30 23:35:53 -0400 |
| commit | 5036ab8df278f9879d8958679bd043e32515a3e4 (patch) | |
| tree | 6faf71ad1579daab0cfca48cdac8b85388b88158 /fs/ext4/ext4.h | |
| parent | 55cdd0af2bc5ffc92a2deb745627755aecd5db33 (diff) | |
| download | linux-stable-5036ab8df278f9879d8958679bd043e32515a3e4.tar.gz linux-stable-5036ab8df278f9879d8958679bd043e32515a3e4.tar.bz2 linux-stable-5036ab8df278f9879d8958679bd043e32515a3e4.zip | |
ext4: flush background discard kwork when retry allocation
The background discard kwork tries to mark blocks used and issue
discard. This can make filesystem suffer from NOSPC error, xfstest
generic/371 can fail due to it. Fix it by flushing discard kwork
in ext4_should_retry_alloc. At the same time, give up discard at
the moment.
Signed-off-by: Wang Jianchao <wangjianchao@kuaishou.com>
Link: https://lore.kernel.org/r/20210830075246.12516-6-jianchao.wan9@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 6b678b968d84..d71dcac3b97f 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1538,6 +1538,7 @@ struct ext4_sb_info { after commit completed */ struct list_head s_discard_list; struct work_struct s_discard_work; + atomic_t s_retry_alloc_pending; struct rb_root s_mb_avg_fragment_size_root; rwlock_t s_mb_rb_lock; struct list_head *s_mb_largest_free_orders; |