resolve conflicts

1 files changed, 33 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index d2b99c852301..c68771c27d88 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -208,24 +208,55 @@ struct page {
  * Also, many kernel routines increase the page count before a critical
  * routine so they can be sure the page doesn't go away from under them.
  */
-#define get_page(p)		atomic_inc(&(p)->count)
-#define __put_page(p)		atomic_dec(&(p)->count)
 #define put_page_testzero(p)				\
 	({						\
 		BUG_ON(page_count(page) == 0);		\
 		atomic_dec_and_test(&(p)->count);	\
 	})
+
 #define page_count(p)		atomic_read(&(p)->count)
 #define set_page_count(p,v) 	atomic_set(&(p)->count, v)
+#define __put_page(p)		atomic_dec(&(p)->count)
 
 extern void FASTCALL(__page_cache_release(struct page *));
 
+#ifdef CONFIG_HUGETLB_PAGE
+
+static inline void get_page(struct page *page)
+{
+	if (PageCompound(page))
+		page = (struct page *)page->lru.next;
+	atomic_inc(&page->count);
+}
+
 static inline void put_page(struct page *page)
 {
+	if (PageCompound(page)) {
+		page = (struct page *)page->lru.next;
+		if (page->lru.prev) {	/* destructor? */
+			(*(void (*)(struct page *))page->lru.prev)(page);
+			return;
+		}
+	}
 	if (!PageReserved(page) && put_page_testzero(page))
 		__page_cache_release(page);
 }
 
+#else		/* CONFIG_HUGETLB_PAGE */
+
+static inline void get_page(struct page *page)
+{
+	atomic_inc(&page->count);
+}
+
+static inline void put_page(struct page *page)
+{
+	if (!PageReserved(page) && put_page_testzero(page))
+		__page_cache_release(page);
+}
+
+#endif		/* CONFIG_HUGETLB_PAGE */
+
 /*
  * Multiple processes may "see" the same page. E.g. for untouched
  * mappings of /dev/null, all processes see the same page full of