diff options
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r-- | mm/page_alloc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index eec89ab39bb6..62c122528587 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c | |||
@@ -56,6 +56,7 @@ long nr_swap_pages; | |||
56 | int percpu_pagelist_fraction; | 56 | int percpu_pagelist_fraction; |
57 | 57 | ||
58 | static void fastcall free_hot_cold_page(struct page *page, int cold); | 58 | static void fastcall free_hot_cold_page(struct page *page, int cold); |
59 | static void __free_pages_ok(struct page *page, unsigned int order); | ||
59 | 60 | ||
60 | /* | 61 | /* |
61 | * results with 256, 32 in the lowmem_reserve sysctl: | 62 | * results with 256, 32 in the lowmem_reserve sysctl: |
@@ -173,12 +174,18 @@ static void bad_page(struct page *page) | |||
173 | * put_page() function. Its ->lru.prev holds the order of allocation. | 174 | * put_page() function. Its ->lru.prev holds the order of allocation. |
174 | * This usage means that zero-order pages may not be compound. | 175 | * This usage means that zero-order pages may not be compound. |
175 | */ | 176 | */ |
177 | |||
178 | static void free_compound_page(struct page *page) | ||
179 | { | ||
180 | __free_pages_ok(page, (unsigned long)page[1].lru.prev); | ||
181 | } | ||
182 | |||
176 | static void prep_compound_page(struct page *page, unsigned long order) | 183 | static void prep_compound_page(struct page *page, unsigned long order) |
177 | { | 184 | { |
178 | int i; | 185 | int i; |
179 | int nr_pages = 1 << order; | 186 | int nr_pages = 1 << order; |
180 | 187 | ||
181 | page[1].lru.next = NULL; /* set dtor */ | 188 | page[1].lru.next = (void *)free_compound_page; /* set dtor */ |
182 | page[1].lru.prev = (void *)order; | 189 | page[1].lru.prev = (void *)order; |
183 | for (i = 0; i < nr_pages; i++) { | 190 | for (i = 0; i < nr_pages; i++) { |
184 | struct page *p = page + i; | 191 | struct page *p = page + i; |