X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=mm%2Fmempolicy.c;h=78e1472933ea0fce8ee57b94ed3d3d9a3b52b3fc;hb=d55135689019c3a0b26bccd400d90c6d2fd13439;hp=e3ab02822799d2527949fc4476a380820aec5371;hpb=e5744abb2fa3629aa5a94e21ca1eae32ff2fe00b;p=deliverable%2Flinux.git

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index e3ab02822799..78e1472933ea 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -795,36 +795,6 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
 	return err;
 }
 
-/*
- * Update task->flags PF_MEMPOLICY bit: set iff non-default
- * mempolicy.  Allows more rapid checking of this (combined perhaps
- * with other PF_* flag bits) on memory allocation hot code paths.
- *
- * If called from outside this file, the task 'p' should -only- be
- * a newly forked child not yet visible on the task list, because
- * manipulating the task flags of a visible task is not safe.
- *
- * The above limitation is why this routine has the funny name
- * mpol_fix_fork_child_flag().
- *
- * It is also safe to call this with a task pointer of current,
- * which the static wrapper mpol_set_task_struct_flag() does,
- * for use within this file.
- */
-
-void mpol_fix_fork_child_flag(struct task_struct *p)
-{
-	if (p->mempolicy)
-		p->flags |= PF_MEMPOLICY;
-	else
-		p->flags &= ~PF_MEMPOLICY;
-}
-
-static void mpol_set_task_struct_flag(void)
-{
-	mpol_fix_fork_child_flag(current);
-}
-
 /* Set the process memory policy */
 static long do_set_mempolicy(unsigned short mode, unsigned short flags,
 			     nodemask_t *nodes)
@@ -861,7 +831,6 @@ static long do_set_mempolicy(unsigned short mode, unsigned short flags,
 	}
 	old = current->mempolicy;
 	current->mempolicy = new;
-	mpol_set_task_struct_flag();
 	if (new && new->mode == MPOL_INTERLEAVE &&
 	    nodes_weight(new->v.nodes))
 		current->il_next = first_node(new->v.nodes);
@@ -1782,21 +1751,18 @@ static unsigned interleave_nodes(struct mempolicy *policy)
 /*
  * Depending on the memory policy provide a node from which to allocate the
  * next slab entry.
- * @policy must be protected by freeing by the caller.  If @policy is
- * the current task's mempolicy, this protection is implicit, as only the
- * task can change it's policy.  The system default policy requires no
- * such protection.
  */
-unsigned slab_node(void)
+unsigned int mempolicy_slab_node(void)
 {
 	struct mempolicy *policy;
+	int node = numa_mem_id();
 
 	if (in_interrupt())
-		return numa_node_id();
+		return node;
 
 	policy = current->mempolicy;
 	if (!policy || policy->flags & MPOL_F_LOCAL)
-		return numa_node_id();
+		return node;
 
 	switch (policy->mode) {
 	case MPOL_PREFERRED:
@@ -1816,11 +1782,11 @@ unsigned slab_node(void)
 		struct zonelist *zonelist;
 		struct zone *zone;
 		enum zone_type highest_zoneidx = gfp_zone(GFP_KERNEL);
-		zonelist = &NODE_DATA(numa_node_id())->node_zonelists[0];
+		zonelist = &NODE_DATA(node)->node_zonelists[0];
 		(void)first_zones_zonelist(zonelist, highest_zoneidx,
 							&policy->v.nodes,
 							&zone);
-		return zone ? zone->node : numa_node_id();
+		return zone ? zone->node : node;
 	}
 
 	default: