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| author | Andi Kleen <ak@suse.de> | 2008-07-24 08:27:46 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 21:47:17 +0400 |
| commit | 01ad1c0827db5b3695c53e296dbb2c1da16a0911 (patch) | |
| tree | 80c46c00832094f2413ad97b8e1953018a71cc68 | |
| parent | b54bbf7b81170f03597c17dd0b559e3006bc9868 (diff) | |
| download | linux-01ad1c0827db5b3695c53e296dbb2c1da16a0911.tar.xz | |
mm: export prep_compound_page to mm
hugetlb will need to get compound pages from bootmem to handle the case of
them being greater than or equal to MAX_ORDER. Export the constructor
function needed for this.
Acked-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/internal.h | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h index 858ad01864dc..1f43f7416972 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -16,6 +16,8 @@ void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma, unsigned long floor, unsigned long ceiling); +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); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e43aae135b38..eaa86671ebbd 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -264,7 +264,7 @@ static void free_compound_page(struct page *page) __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; |