From f33eaf8e85d275b293c43c10cd837aa67d6dd763 Mon Sep 17 00:00:00 2001 From: Xishi Qiu Date: Fri, 28 Sep 2012 10:19:36 +1000 Subject: [PATCH] memory-hotplug: build zonelists when offlining pages online_pages() does build_all_zonelists() and zone_pcp_update(), I think offline_pages() should do it too. When the zone has no memory to allocate, remove it from other nodes' zonelists. zone_batchsize() depends on zone's present pages, if zone's present pages are changed, zone's pcp should be updated. Signed-off-by: Xishi Qiu Cc: Yasuaki Ishimatsu Signed-off-by: Andrew Morton --- mm/memory_hotplug.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 6a5b90d0cfd7..b35016156c19 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -970,8 +970,13 @@ repeat: init_per_zone_wmark_min(); - if (!populated_zone(zone)) + if (!populated_zone(zone)) { zone_pcp_reset(zone); + mutex_lock(&zonelists_mutex); + build_all_zonelists(NULL, NULL); + mutex_unlock(&zonelists_mutex); + } else + zone_pcp_update(zone); if (!node_present_pages(node)) { node_clear_state(node, N_HIGH_MEMORY); -- 2.39.5