From 12f2f0bab442ecdff45d67ff1c3d0b21f46794bd Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Thu, 3 Apr 2014 14:47:19 -0700 Subject: [PATCH] mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim commit 99120b772b52853f9a2b829a21dd44d9b20558f1 upstream. When direct reclaim is executed by a process bound to a set of NUMA nodes, we should scan only those nodes when possible, but currently we will scan kmem from all online nodes even if the kmem shrinker is NUMA aware. That said, binding a process to a particular NUMA node won't prevent it from shrinking inode/dentry caches from other nodes, which is not good. Fix this. Signed-off-by: Vladimir Davydov Cc: Mel Gorman Cc: Michal Hocko Cc: Johannes Weiner Cc: Rik van Riel Cc: Dave Chinner Cc: Glauber Costa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Mel Gorman Signed-off-by: Greg Kroah-Hartman --- mm/vmscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 6ef484f..47905d7 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2424,8 +2424,8 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist, unsigned long lru_pages = 0; nodes_clear(shrink->nodes_to_scan); - for_each_zone_zonelist(zone, z, zonelist, - gfp_zone(sc->gfp_mask)) { + for_each_zone_zonelist_nodemask(zone, z, zonelist, + gfp_zone(sc->gfp_mask), sc->nodemask) { if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL)) continue; -- 2.7.4