f2fs: link f2fs quota ops for sysfile

This patch reverts:
commit fb40d618 ("f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG").

We were missing error handlers used in f2fs quota ops.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -1328,10 +1328,8 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 
 	if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
 		__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
-	/*
-	 * TODO: we count on fsck.f2fs to clear this flag until we figure out
-	 * missing cases which clear it incorrectly.
-	 */
+	else
+		__clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
 
 	if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
 		__set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);

fs/f2fs/super.c

@@ -3160,9 +3160,6 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 
 #ifdef CONFIG_QUOTA
 	sb->dq_op = &f2fs_quota_operations;
-	if (f2fs_sb_has_quota_ino(sbi))
-		sb->s_qcop = &dquot_quotactl_sysfile_ops;
-	else
 	sb->s_qcop = &f2fs_quotactl_ops;
 	sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;