diff options
| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2010-09-08 10:19:36 +0900 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2010-10-08 09:32:45 +0200 |
| commit | 6de2b1aab94355482bd2accdc115666509667458 (patch) | |
| tree | 630a88dd5afe2c49a428179770140b22bbc9d7da /include/linux/hugetlb.h | |
| parent | 290408d4a25002f099efeee7b6a5778d431154d6 (diff) | |
| download | blackbird-op-linux-6de2b1aab94355482bd2accdc115666509667458.tar.gz blackbird-op-linux-6de2b1aab94355482bd2accdc115666509667458.zip | |
HWPOISON, hugetlb: add free check to dequeue_hwpoison_huge_page()
This check is necessary to avoid race between dequeue and allocation,
which can cause a free hugepage to be dequeued twice and get kernel unstable.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'include/linux/hugetlb.h')
| -rw-r--r-- | include/linux/hugetlb.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 9e51f77d44ca..796f30e00806 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -43,7 +43,7 @@ int hugetlb_reserve_pages(struct inode *inode, long from, long to, struct vm_area_struct *vma, int acctflags); void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed); -void __isolate_hwpoisoned_huge_page(struct page *page); +int dequeue_hwpoisoned_huge_page(struct page *page); void copy_huge_page(struct page *dst, struct page *src); extern unsigned long hugepages_treat_as_movable; @@ -102,7 +102,7 @@ static inline void hugetlb_report_meminfo(struct seq_file *m) #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; }) #define hugetlb_fault(mm, vma, addr, flags) ({ BUG(); 0; }) #define huge_pte_offset(mm, address) 0 -#define __isolate_hwpoisoned_huge_page(page) 0 +#define dequeue_hwpoisoned_huge_page(page) 0 static inline void copy_huge_page(struct page *dst, struct page *src) { } |
