[PATCH] mm: make hugepages obey cpusets.

See http://marc.theaimsgroup.com/?l=linux-kernel&m=113167000201265&w=2
http://marc.theaimsgroup.com/?l=linux-mm&m=113167267527312&w=2

Make hugepages obey cpusets.

Signed-off-by: Christoph Lameter <[email protected]>
Acked-by: William Irwin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index f4c43d7980ba2d83ff3d038995792aa93d991d18..b21d78c941b527b9c8021d23a6d63bf3dd892523 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -12,6 +12,7 @@
 #include <linux/nodemask.h>
 #include <linux/pagemap.h>
 #include <linux/mempolicy.h>
+#include <linux/cpuset.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -48,7 +49,8 @@ static struct page *dequeue_huge_page(struct vm_area_struct *vma,
 
        for (z = zonelist->zones; *z; z++) {
                nid = (*z)->zone_pgdat->node_id;
-               if (!list_empty(&hugepage_freelists[nid]))
+               if (cpuset_zone_allowed(*z, GFP_HIGHUSER) &&
+                   !list_empty(&hugepage_freelists[nid]))
                        break;
        }