From 89fa30242facca249aead2aac03c4c69764f911c Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 25 Sep 2006 23:31:55 -0700 Subject: [PATCH] NUMA: Add zone_to_nid function There are many places where we need to determine the node of a zone. Currently we use a difficult to read sequence of pointer dereferencing. Put that into an inline function and use throughout VM. Maybe we can find a way to optimize the lookup in the future. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempolicy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'mm/mempolicy.c') diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 8002e1faccda..38f89650bc84 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -487,7 +487,7 @@ static void get_zonemask(struct mempolicy *p, nodemask_t *nodes) switch (p->policy) { case MPOL_BIND: for (i = 0; p->v.zonelist->zones[i]; i++) - node_set(p->v.zonelist->zones[i]->zone_pgdat->node_id, + node_set(zone_to_nid(p->v.zonelist->zones[i]), *nodes); break; case MPOL_DEFAULT: @@ -1145,7 +1145,7 @@ unsigned slab_node(struct mempolicy *policy) * Follow bind policy behavior and start allocation at the * first node. */ - return policy->v.zonelist->zones[0]->zone_pgdat->node_id; + return zone_to_nid(policy->v.zonelist->zones[0]); case MPOL_PREFERRED: if (policy->v.preferred_node >= 0) @@ -1649,7 +1649,7 @@ void mpol_rebind_policy(struct mempolicy *pol, const nodemask_t *newmask) nodes_clear(nodes); for (z = pol->v.zonelist->zones; *z; z++) - node_set((*z)->zone_pgdat->node_id, nodes); + node_set(zone_to_nid(*z), nodes); nodes_remap(tmp, nodes, *mpolmask, *newmask); nodes = tmp; -- cgit v1.2.3