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f2fs: flush quota blocks after turnning it off

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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>
This commit is contained in:
Jaegeuk Kim 2019-01-27 17:59:53 -08:00
parent 11ac8ef8d8
commit 0e0667b625
1 changed files with 6 additions and 0 deletions
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6
fs/f2fs/super.c
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@ -2026,6 +2026,12 @@ void f2fs_quota_off_umount(struct super_block *sb)
set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
} }
} }
/*
* 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) static void f2fs_truncate_quota_inode_pages(struct super_block *sb)