Commit b1c12cbc authored by Konstantin Khlebnikov's avatar Konstantin Khlebnikov Committed by Linus Torvalds

mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma

Fix a gcc warning (and bug?) introduced in cc9a6c87 ("cpuset: mm: reduce
large amounts of memory barrier related damage v3")

Local variable "page" can be uninitialized if the nodemask from vma policy
does not intersects with nodemask from cpuset.  Even if it doesn't happens
it is better to initialize this variable explicitly than to introduce
a kernel oops in a weird corner case.

mm/hugetlb.c: In function `alloc_huge_page':
mm/hugetlb.c:1135:5: warning: `page' may be used uninitialized in this function
Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: default avatarMel Gorman <mgorman@suse.de>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 66f75a5d
...@@ -532,7 +532,7 @@ static struct page *dequeue_huge_page_vma(struct hstate *h, ...@@ -532,7 +532,7 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
struct vm_area_struct *vma, struct vm_area_struct *vma,
unsigned long address, int avoid_reserve) unsigned long address, int avoid_reserve)
{ {
struct page *page; struct page *page = NULL;
struct mempolicy *mpol; struct mempolicy *mpol;
nodemask_t *nodemask; nodemask_t *nodemask;
struct zonelist *zonelist; struct zonelist *zonelist;
......
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