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>
This commit is contained in:
Ken Chen 2007-07-23 18:44:00 -07:00 committed by Linus Torvalds
parent be1ff386e7
commit 5ab3ee7b1c
1 changed files with 1 additions and 0 deletions

View File

@ -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;