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Commit 01ad1c08 authored by Andi Kleen's avatar Andi Kleen Committed by Linus Torvalds
Browse files

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: default avatarAdam Litke <agl@us.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b54bbf7b

mm/internal.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

mm/page_alloc.c

+1 −1
Original line number Diff line number Diff line
@@ -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;