quota: Remove ->get_xstate and ->get_xstatev callbacks

These callbacks are now unused. Remove them.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

fs/quota/quota.c

@@ -350,12 +350,9 @@ static int quota_getxstate(struct super_block *sb, void __user *addr)
 	struct fs_quota_stat fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstate && !sb->s_qcop->get_state)
+	if (!sb->s_qcop->get_state)
 		return -ENOSYS;
-	if (sb->s_qcop->get_state)
-		ret = quota_getstate(sb, &fqs);
-	else
-		ret = sb->s_qcop->get_xstate(sb, &fqs);
+	ret = quota_getstate(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;
@@ -414,7 +411,7 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr)
 	struct fs_quota_statv fqs;
 	int ret;
 
-	if (!sb->s_qcop->get_xstatev && !sb->s_qcop->get_state)
+	if (!sb->s_qcop->get_state)
 		return -ENOSYS;
 
 	memset(&fqs, 0, sizeof(fqs));
@@ -428,10 +425,7 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr)
 	default:
 		return -EINVAL;
 	}
-	if (sb->s_qcop->get_state)
-		ret = quota_getstatev(sb, &fqs);
-	else
-		ret = sb->s_qcop->get_xstatev(sb, &fqs);
+	ret = quota_getstatev(sb, &fqs);
 	if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 		return -EFAULT;
 	return ret;

include/linux/quota.h

@@ -408,8 +408,6 @@ struct quotactl_ops {
 	int (*get_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*set_dqblk)(struct super_block *, struct kqid, struct qc_dqblk *);
 	int (*get_state)(struct super_block *, struct qc_state *);
-	int (*get_xstate)(struct super_block *, struct fs_quota_stat *);
-	int (*get_xstatev)(struct super_block *, struct fs_quota_statv *);
 	int (*rm_xquota)(struct super_block *, unsigned int);
 };