Commit 5ab3ee7b authored Jul 23, 2007 by Ken Chen Committed by Linus Torvalds Jul 24, 2007

fix hugetlb page allocation leak



dequeue_huge_page() has a serious memory leak upon hugetlb page
allocation.  The for loop continues on allocating hugetlb pages out of
all allowable zone, where this function is supposedly only dequeue one
and only one pages.

Fixed it by breaking out of the for loop once a hugetlb page is found.

Signed-off-by: Ken Chen <kenchen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent be1ff386

mm/hugetlb.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -84,6 +84,7 @@ static struct page dequeue_huge_page(struct vm_area_struct vma,
		list_del(&page->lru);
		free_huge_pages--;
		free_huge_pages_node[nid]--;
		break;
		}
		}
		return page;