| From | Andi Kleen <> | Subject | [PATCH] [9/18] Export prep_compound_page to the hugetlb allocator | Date | Mon, 17 Mar 2008 02:58:23 +0100 (CET) |
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hugetlb will need to get compound pages from bootmem to handle the case of them being larger than MAX_ORDER. Export the constructor function needed for this.
Signed-off-by: Andi Kleen <ak@suse.de>
--- mm/internal.h | 2 ++ mm/page_alloc.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-)
Index: linux/mm/internal.h =================================================================== --- linux.orig/mm/internal.h +++ linux/mm/internal.h @@ -13,6 +13,8 @@ #include <linux/mm.h> +extern void prep_compound_page(struct page *page, unsigned long order); + static inline void set_page_count(struct page *page, int v) { atomic_set(&page->_count, v); Index: linux/mm/page_alloc.c =================================================================== --- linux.orig/mm/page_alloc.c +++ linux/mm/page_alloc.c @@ -272,7 +272,7 @@ static void free_compound_page(struct pa __free_pages_ok(page, compound_order(page)); } -static void prep_compound_page(struct page *page, unsigned long order) +void prep_compound_page(struct page *page, unsigned long order) { int i; int nr_pages = 1 << order;
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