dequeue_huge_page() warning fix

mm/hugetlb.c: In function `dequeue_huge_page':
mm/hugetlb.c:72: warning: 'nid' might be used uninitialized in this function

Cc: Christoph Lameter <clameter@sgi.com>
Cc: Adam Litke <agl@us.ibm.com>
Cc: David Gibson <hermes@gibson.dropbear.id.au>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c4a573b..15fc7b0 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -78,16 +78,13 @@ static struct page *dequeue_huge_page(struct vm_area_struct *vma,
        for (z = zonelist->zones; *z; z++) {
                nid = zone_to_nid(*z);
                if (cpuset_zone_allowed_softwall(*z, htlb_alloc_mask) &&
-                   !list_empty(&hugepage_freelists[nid]))
-                       break;
-       }
-
-       if (*z) {
-               page = list_entry(hugepage_freelists[nid].next,
-                                 struct page, lru);
-               list_del(&page->lru);
-               free_huge_pages--;
-               free_huge_pages_node[nid]--;
+                   !list_empty(&hugepage_freelists[nid])) {
+                       page = list_entry(hugepage_freelists[nid].next,
+                                         struct page, lru);
+                       list_del(&page->lru);
+                       free_huge_pages--;
+                       free_huge_pages_node[nid]--;
+               }
        }
        return page;
 }