Commit 6b2fbfac authored Jan 27, 2019 by Jaegeuk Kim Committed by Greg Kroah-Hartman Nov 06, 2019

f2fs: flush quota blocks after turnning it off



[ Upstream commit 0e0667b625cf64243df83171bff61f9d350b9ca5 ]

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>

parent e5641f02

fs/f2fs/super.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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)