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| author | Nick Piggin <npiggin@suse.de> | 2006-03-22 11:08:40 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 18:54:02 +0300 |
| commit | 7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29 (patch) | |
| tree | 405a96eade34845dabe2f125b6c5eb095846869d /mm/hugetlb.c | |
| parent | 70dc991d66cac40fdb07346dba2b5d862d732c34 (diff) | |
| download | linux-7835e98b2e3c66dba79cb0ff8ebb90a2fe030c29.tar.xz | |
[PATCH] remove set_page_count() outside mm/
set_page_count usage outside mm/ is limited to setting the refcount to 1.
Remove set_page_count from outside mm/, and replace those users with
init_page_count() and set_page_refcounted().
This allows more debug checking, and tighter control on how code is allowed
to play around with page->_count.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 39d49ecea8e8..20117a4b8ab6 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -18,6 +18,7 @@ #include <asm/pgtable.h> #include <linux/hugetlb.h> +#include "internal.h" const unsigned long hugetlb_zero = 0, hugetlb_infinity = ~0UL; static unsigned long nr_huge_pages, free_huge_pages; @@ -106,7 +107,7 @@ struct page *alloc_huge_page(struct vm_area_struct *vma, unsigned long addr) return NULL; } spin_unlock(&hugetlb_lock); - set_page_count(page, 1); + set_page_refcounted(page); for (i = 0; i < (HPAGE_SIZE/PAGE_SIZE); ++i) clear_user_highpage(&page[i], addr); return page; @@ -152,7 +153,7 @@ static void update_and_free_page(struct page *page) 1 << PG_private | 1<< PG_writeback); } page[1].lru.next = NULL; - set_page_count(page, 1); + set_page_refcounted(page); __free_pages(page, HUGETLB_PAGE_ORDER); } |