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-rw-r--r--mm/slab.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c
index f477acfb732..ff0ab772f49 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -590,6 +590,8 @@ static inline void page_set_cache(struct page *page, struct kmem_cache *cache)
static inline struct kmem_cache *page_get_cache(struct page *page)
{
+ if (unlikely(PageCompound(page)))
+ page = (struct page *)page_private(page);
return (struct kmem_cache *)page->lru.next;
}
@@ -600,6 +602,8 @@ static inline void page_set_slab(struct page *page, struct slab *slab)
static inline struct slab *page_get_slab(struct page *page)
{
+ if (unlikely(PageCompound(page)))
+ page = (struct page *)page_private(page);
return (struct slab *)page->lru.prev;
}
@@ -2412,8 +2416,11 @@ static void set_slab_attr(struct kmem_cache *cachep, struct slab *slabp,
struct page *page;
/* Nasty!!!!!! I hope this is OK. */
- i = 1 << cachep->gfporder;
page = virt_to_page(objp);
+
+ i = 1;
+ if (likely(!PageCompound(page)))
+ i <<= cachep->gfporder;
do {
page_set_cache(page, cachep);
page_set_slab(page, slabp);