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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2024-04-03 23:07:53 +0000 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2024-04-12 20:58:35 +0000 |
| commit | 3bdb7f161697e2d5123b89fe1778ef17a44858e7 (patch) | |
| tree | 5390b9fd1cf4617a8e0a1bf707826df54933bd07 /fs/f2fs | |
| parent | e07230da0500e0919a765037c5e81583b519be2c (diff) | |
| download | linux-3bdb7f161697e2d5123b89fe1778ef17a44858e7.tar.gz linux-3bdb7f161697e2d5123b89fe1778ef17a44858e7.tar.bz2 linux-3bdb7f161697e2d5123b89fe1778ef17a44858e7.zip | |
f2fs: don't set RO when shutting down f2fs
Shutdown does not check the error of thaw_super due to readonly, which
causes a deadlock like below.
f2fs_ioc_shutdown(F2FS_GOING_DOWN_FULLSYNC) issue_discard_thread
- bdev_freeze
- freeze_super
- f2fs_stop_checkpoint()
- f2fs_handle_critical_error - sb_start_write
- set RO - waiting
- bdev_thaw
- thaw_super_locked
- return -EINVAL, if sb_rdonly()
- f2fs_stop_discard_thread
-> wait for kthread_stop(discard_thread);
Reported-by: "Light Hsieh (謝明燈)" <Light.Hsieh@mediatek.com>
Reviewed-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/super.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 8ac4734c2df6..df32573d1f62 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4159,9 +4159,15 @@ void f2fs_handle_critical_error(struct f2fs_sb_info *sbi, unsigned char reason, if (shutdown) set_sbi_flag(sbi, SBI_IS_SHUTDOWN); - /* continue filesystem operators if errors=continue */ - if (continue_fs || f2fs_readonly(sb)) + /* + * Continue filesystem operators if errors=continue. Should not set + * RO by shutdown, since RO bypasses thaw_super which can hang the + * system. + */ + if (continue_fs || f2fs_readonly(sb) || shutdown) { + f2fs_warn(sbi, "Stopped filesystem due to reason: %d", reason); return; + } f2fs_warn(sbi, "Remounting filesystem read-only"); /* |