[PATCH v2 3/6] mm: hugetlb: change the return type for alloc_fresh_gigantic_page

[shijie.huang@arm.com (Huang Shijie)]

This patch changes the return type to "struct page*" for
alloc_fresh_gigantic_page().

This patch makes preparation for later patch.

Signed-off-by: Huang Shijie <shijie.huang@arm.com>
---
 mm/hugetlb.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index db0177b..6995087 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1142,7 +1142,7 @@ static struct page *alloc_fresh_gigantic_page_node(struct hstate *h,
 	return page;
 }
 
-static int alloc_fresh_gigantic_page(struct hstate *h,
+static struct page *alloc_fresh_gigantic_page(struct hstate *h,
 				nodemask_t *nodes_allowed, bool no_init)
 {
 	struct page *page = NULL;
@@ -1151,10 +1151,10 @@ static int alloc_fresh_gigantic_page(struct hstate *h,
 	for_each_node_mask_to_alloc(h, nr_nodes, node, nodes_allowed) {
 		page = alloc_fresh_gigantic_page_node(h, node, no_init);
 		if (page)
-			return 1;
+			return page;
 	}
 
-	return 0;
+	return NULL;
 }
 
 static inline bool gigantic_page_supported(void) { return true; }
@@ -1167,8 +1167,8 @@ static inline bool gigantic_page_supported(void) { return false; }
 static inline void free_gigantic_page(struct page *page, unsigned int order) { }
 static inline void destroy_compound_gigantic_page(struct page *page,
 						unsigned int order) { }
-static inline int alloc_fresh_gigantic_page(struct hstate *h,
-		nodemask_t *nodes_allowed, bool no_init) { return 0; }
+static inline struct page *alloc_fresh_gigantic_page(struct hstate *h,
+		nodemask_t *nodes_allowed, bool no_init) { return NULL; }
 #endif
 
 static void update_and_free_page(struct hstate *h, struct page *page)
@@ -2315,7 +2315,7 @@ static unsigned long set_max_huge_pages(struct hstate *h, unsigned long count,
 		cond_resched();
 
 		if (hstate_is_gigantic(h))
-			ret = alloc_fresh_gigantic_page(h, nodes_allowed,
+			ret = !!alloc_fresh_gigantic_page(h, nodes_allowed,
 							false);
 		else
 			ret = alloc_fresh_huge_page(h, nodes_allowed);
-- 
2.5.5