From: Jaegeuk Kim Date: Mon, 28 Jan 2019 01:59:53 +0000 (-0800) Subject: f2fs: flush quota blocks after turnning it off X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0e0667b625cf64243df83171bff61f9d350b9ca5;p=linux.git f2fs: flush quota blocks after turnning it off 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 Signed-off-by: Jaegeuk Kim --- diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 5e1f8573a17fc..7694cb3507342 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2026,6 +2026,12 @@ void f2fs_quota_off_umount(struct super_block *sb) 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)