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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2022-03-04 20:40:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:23:58 +0300 |
| commit | 58d3aa672d1386d4ccd2c11d6f1a09675c30f57a (patch) | |
| tree | c57fa702596a604e9bd8c7129bfc5b38f602e365 /Documentation | |
| parent | 7260793c13e9ae730867f0f6515d1af84f24308a (diff) | |
| download | linux-58d3aa672d1386d4ccd2c11d6f1a09675c30f57a.tar.xz | |
f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs
[ Upstream commit ba900534f807f0b327c92d5141c85d2313e2d55c ]
Let's purge inode cache in order to avoid the below deadlock.
[freeze test] shrinkder
freeze_super
- pwercpu_down_write(SB_FREEZE_FS)
- super_cache_scan
- down_read(&sb->s_umount)
- prune_icache_sb
- dispose_list
- evict
- f2fs_evict_inode
thaw_super
- down_write(&sb->s_umount);
- __percpu_down_read(SB_FREEZE_FS)
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index f627e705e663..48d41b669627 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -425,6 +425,7 @@ Description: Show status of f2fs superblock in real time. 0x800 SBI_QUOTA_SKIP_FLUSH skip flushing quota in current CP 0x1000 SBI_QUOTA_NEED_REPAIR quota file may be corrupted 0x2000 SBI_IS_RESIZEFS resizefs is in process + 0x4000 SBI_IS_FREEZING freefs is in process ====== ===================== ================================= What: /sys/fs/f2fs/<disk>/ckpt_thread_ioprio |