quota: Inline functions into their callsites

inode_add_rsv_space() and inode_sub_rsv_space() had only one callsite.
Inline them there directly. inode_claim_rsv_space() and
inode_reclaim_rsv_space() had two callsites so inline them there as
well. This will simplify further locking changes.

Signed-off-by: Jan Kara <[e-mail]>

fs/quota/dquot.c

···
 	return inode->i_sb->dq_op->get_reserved_space(inode);
 }
 
-void inode_add_rsv_space(struct inode *inode, qsize_t number)
-{
-	spin_lock(&inode->i_lock);
-	*inode_reserved_space(inode) += number;
-	spin_unlock(&inode->i_lock);
-}
-EXPORT_SYMBOL(inode_add_rsv_space);
-
-void inode_claim_rsv_space(struct inode *inode, qsize_t number)
-{
-	spin_lock(&inode->i_lock);
-	*inode_reserved_space(inode) -= number;
-	__inode_add_bytes(inode, number);
-	spin_unlock(&inode->i_lock);
-}
-EXPORT_SYMBOL(inode_claim_rsv_space);
-
-void inode_reclaim_rsv_space(struct inode *inode, qsize_t number)
-{
-	spin_lock(&inode->i_lock);
-	*inode_reserved_space(inode) += number;
-	__inode_sub_bytes(inode, number);
-	spin_unlock(&inode->i_lock);
-}
-EXPORT_SYMBOL(inode_reclaim_rsv_space);
-
-void inode_sub_rsv_space(struct inode *inode, qsize_t number)
-{
-	spin_lock(&inode->i_lock);
-	*inode_reserved_space(inode) -= number;
-	spin_unlock(&inode->i_lock);
-}
-EXPORT_SYMBOL(inode_sub_rsv_space);
-
 static qsize_t inode_get_rsv_space(struct inode *inode)
 {
 	qsize_t ret;
···
 static void inode_incr_space(struct inode *inode, qsize_t number,
 				int reserve)
 {
-	if (reserve)
-		inode_add_rsv_space(inode, number);
-	else
+	if (reserve) {
+		spin_lock(&inode->i_lock);
+		*inode_reserved_space(inode) += number;
+		spin_unlock(&inode->i_lock);
+	} else {
 		inode_add_bytes(inode, number);
+	}
 }
 
 static void inode_decr_space(struct inode *inode, qsize_t number, int reserve)
 {
-	if (reserve)
-		inode_sub_rsv_space(inode, number);
-	else
+	if (reserve) {
+		spin_lock(&inode->i_lock);
+		*inode_reserved_space(inode) -= number;
+		spin_unlock(&inode->i_lock);
+	} else {
 		inode_sub_bytes(inode, number);
+	}
 }
 
 /*
···
 	int cnt, index;
 
 	if (!dquot_active(inode)) {
-		inode_claim_rsv_space(inode, number);
+		spin_lock(&inode->i_lock);
+		*inode_reserved_space(inode) -= number;
+		__inode_add_bytes(inode, number);
+		spin_unlock(&inode->i_lock);
 		return 0;
 	}
 
···
 			dquot_claim_reserved_space(dquots[cnt], number);
 	}
 	/* Update inode bytes */
-	inode_claim_rsv_space(inode, number);
+	spin_lock(&inode->i_lock);
+	*inode_reserved_space(inode) -= number;
+	__inode_add_bytes(inode, number);
+	spin_unlock(&inode->i_lock);
 	spin_unlock(&dq_data_lock);
 	mark_all_dquot_dirty(dquots);
 	srcu_read_unlock(&dquot_srcu, index);
···
 	int cnt, index;
 
 	if (!dquot_active(inode)) {
-		inode_reclaim_rsv_space(inode, number);
+		spin_lock(&inode->i_lock);
+		*inode_reserved_space(inode) += number;
+		__inode_sub_bytes(inode, number);
+		spin_unlock(&inode->i_lock);
 		return;
 	}
 
···
 			dquot_reclaim_reserved_space(dquots[cnt], number);
 	}
 	/* Update inode bytes */
-	inode_reclaim_rsv_space(inode, number);
+	spin_lock(&inode->i_lock);
+	*inode_reserved_space(inode) += number;
+	__inode_sub_bytes(inode, number);
+	spin_unlock(&inode->i_lock);
 	spin_unlock(&dq_data_lock);
 	mark_all_dquot_dirty(dquots);
 	srcu_read_unlock(&dquot_srcu, index);

include/linux/quotaops.h

···
 /*
  * declaration of quota_function calls in kernel.
  */
-void inode_add_rsv_space(struct inode *inode, qsize_t number);
-void inode_claim_rsv_space(struct inode *inode, qsize_t number);
-void inode_sub_rsv_space(struct inode *inode, qsize_t number);
-void inode_reclaim_rsv_space(struct inode *inode, qsize_t number);
-
 int dquot_initialize(struct inode *inode);
 bool dquot_initialize_needed(struct inode *inode);
 void dquot_drop(struct inode *inode);