From: KAMEZAWA Hiroyuki Date: Thu, 7 Feb 2008 08:14:14 +0000 (-0800) Subject: memory cgroup enhancements: fix zone handling in try_to_free_mem_cgroup_page X-Git-Tag: v2.6.25-rc1~455 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=417eead30434b4bd09a54455e839cf9a62c05460;p=linux-2.6-omap-h63xx.git memory cgroup enhancements: fix zone handling in try_to_free_mem_cgroup_page Because NODE_DATA(node)->node_zonelists[] is guaranteed to contain all necessary zones, it is not necessary to use for_each_online_node. And this for_each_online_node() makes reclaim routine start always from node 0. This is not good. This patch makes reclaim start from caller's node and just use usual (default) zonelist order. [akpm@linux-foundation.org: fix warning] Signed-off-by: KAMEZAWA Hiroyuki Cc: Balbir Singh Cc: Pavel Emelianov Cc: Paul Menage Cc: Peter Zijlstra Cc: "Eric W. Biederman" Cc: Nick Piggin Cc: Kirill Korotaev Cc: Herbert Poetzl Cc: David Rientjes Cc: Vaidyanathan Srinivasan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/vmscan.c b/mm/vmscan.c index 1b85217b528..159e6c760d8 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1365,15 +1365,12 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont, .mem_cgroup = mem_cont, .isolate_pages = mem_cgroup_isolate_pages, }; - int node; struct zone **zones; int target_zone = gfp_zone(GFP_HIGHUSER_MOVABLE); - for_each_online_node(node) { - zones = NODE_DATA(node)->node_zonelists[target_zone].zones; - if (do_try_to_free_pages(zones, sc.gfp_mask, &sc)) - return 1; - } + zones = NODE_DATA(numa_node_id())->node_zonelists[target_zone].zones; + if (do_try_to_free_pages(zones, sc.gfp_mask, &sc)) + return 1; return 0; } #endif