X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmempolicy.c;h=d76e8eb342d0df2e0468f014076a720866ae2277;hb=dcf87a2e357e277d3f3e3661962703b80113d2f8;hp=da9463946556311e9e0945583fd76cdd432298e5;hpb=463e7c7cf9aaf95dd05e97e1a47854fdf5454cdc;p=pandora-kernel.git

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index da9463946556..d76e8eb342d0 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -105,7 +105,7 @@ static struct kmem_cache *sn_cache;
 
 /* Highest zone. An specific allocation for a zone below that is not
    policied. */
-enum zone_type policy_zone = ZONE_DMA;
+enum zone_type policy_zone = 0;
 
 struct mempolicy default_policy = {
 	.refcnt = ATOMIC_INIT(1), /* never free it */
@@ -144,7 +144,7 @@ static struct zonelist *bind_zonelist(nodemask_t *nodes)
 	max++;			/* space for zlcache_ptr (see mmzone.h) */
 	zl = kmalloc(sizeof(struct zone *) * max, GFP_KERNEL);
 	if (!zl)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	zl->zlcache_ptr = NULL;
 	num = 0;
 	/* First put in the highest zones from all nodes, then all the next 
@@ -162,6 +162,10 @@ static struct zonelist *bind_zonelist(nodemask_t *nodes)
 			break;
 		k--;
 	}
+	if (num == 0) {
+		kfree(zl);
+		return ERR_PTR(-EINVAL);
+	}
 	zl->zones[num] = NULL;
 	return zl;
 }
@@ -193,9 +197,10 @@ static struct mempolicy *mpol_new(int mode, nodemask_t *nodes)
 		break;
 	case MPOL_BIND:
 		policy->v.zonelist = bind_zonelist(nodes);
-		if (policy->v.zonelist == NULL) {
+		if (IS_ERR(policy->v.zonelist)) {
+			void *error_code = policy->v.zonelist;
 			kmem_cache_free(policy_cache, policy);
-			return ERR_PTR(-ENOMEM);
+			return error_code;
 		}
 		break;
 	}
@@ -316,15 +321,6 @@ static inline int check_pgd_range(struct vm_area_struct *vma,
 	return 0;
 }
 
-/* Check if a vma is migratable */
-static inline int vma_migratable(struct vm_area_struct *vma)
-{
-	if (vma->vm_flags & (
-		VM_LOCKED|VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED))
-		return 0;
-	return 1;
-}
-
 /*
  * Check if all pages in a range are on a set of nodes.
  * If pagelist != NULL then isolate pages from the LRU and
@@ -884,6 +880,10 @@ asmlinkage long sys_mbind(unsigned long start, unsigned long len,
 	err = get_nodes(&nodes, nmask, maxnode);
 	if (err)
 		return err;
+#ifdef CONFIG_CPUSETS
+	/* Restrict the nodes to the allowed nodes in the cpuset */
+	nodes_and(nodes, nodes, current->mems_allowed);
+#endif
 	return do_mbind(start, len, mode, &nodes, flags);
 }
 
@@ -1663,7 +1663,7 @@ void mpol_rebind_policy(struct mempolicy *pol, const nodemask_t *newmask)
 		 * then zonelist_policy() will "FALL THROUGH" to MPOL_DEFAULT.
 		 */
 
-		if (zonelist) {
+		if (!IS_ERR(zonelist)) {
 			/* Good - got mem - substitute new zonelist */
 			kfree(pol->v.zonelist);
 			pol->v.zonelist = zonelist;