From 1b79acc91115ba47e744b70bb166b77bd94f5855 Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Tue, 24 May 2011 17:11:32 -0700 Subject: mm, mem-hotplug: recalculate lowmem_reserve when memory hotplug occurs Currently, memory hotplug calls setup_per_zone_wmarks() and calculate_zone_inactive_ratio(), but doesn't call setup_per_zone_lowmem_reserve(). It means the number of reserved pages aren't updated even if memory hot plug occur. This patch fixes it. Signed-off-by: KOSAKI Motohiro Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Mel Gorman Reviewed-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory_hotplug.c | 9 +++++---- mm/page_alloc.c | 4 ++-- 2 files changed, 7 insertions(+), 6 deletions(-) (limited to 'mm') diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 2c4edc459fb0..59ac18fefd65 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -459,8 +459,9 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages) zone_pcp_update(zone); mutex_unlock(&zonelists_mutex); - setup_per_zone_wmarks(); - calculate_zone_inactive_ratio(zone); + + init_per_zone_wmark_min(); + if (onlined_pages) { kswapd_run(zone_to_nid(zone)); node_set_state(zone_to_nid(zone), N_HIGH_MEMORY); @@ -893,8 +894,8 @@ repeat: zone->zone_pgdat->node_present_pages -= offlined_pages; totalram_pages -= offlined_pages; - setup_per_zone_wmarks(); - calculate_zone_inactive_ratio(zone); + init_per_zone_wmark_min(); + if (!node_present_pages(node)) { node_clear_state(node, N_HIGH_MEMORY); kswapd_stop(node); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 56d0be36be9d..e133cea36932 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5094,7 +5094,7 @@ void setup_per_zone_wmarks(void) * 1TB 101 10GB * 10TB 320 32GB */ -void __meminit calculate_zone_inactive_ratio(struct zone *zone) +static void __meminit calculate_zone_inactive_ratio(struct zone *zone) { unsigned int gb, ratio; @@ -5140,7 +5140,7 @@ static void __meminit setup_per_zone_inactive_ratio(void) * 8192MB: 11584k * 16384MB: 16384k */ -static int __init init_per_zone_wmark_min(void) +int __meminit init_per_zone_wmark_min(void) { unsigned long lowmem_kbytes; -- cgit v1.2.3