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f2fs: flush quota blocks after turnning it off

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[ Upstream commit 0e0667b625 ]

After quota_off, we'll get some dirty blocks. If put_super don't have a chance
to flush them by checkpoint, it causes NULL pointer exception in end_io after
iput(node_inode). (e.g., by checkpoint=disable)

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jaegeuk Kim
2019-01-27 17:59:53 -08:00
committed by Greg Kroah-Hartman
parent e5641f02dc
commit 6b2fbfacd7
1 changed files with 6 additions and 0 deletions
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6
fs/f2fs/super.c
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@@ -1886,6 +1886,12 @@ void f2fs_quota_off_umount(struct super_block *sb)
set_sbi_flag(F2FS_SB(sb), SBI_NEED_FSCK);
}
}
/*
* In case of checkpoint=disable, we must flush quota blocks.
* This can cause NULL exception for node_inode in end_io, since
* put_super already dropped it.
*/
sync_filesystem(sb);
}
static void f2fs_truncate_quota_inode_pages(struct super_block *sb)