From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 10 Nov 2005 19:41:25 +0900 From: Yasunori Goto Subject: [Patch:RFC] New zone ZONE_EASY_RECLAIM[5/5] Message-Id: <20051110190132.023A.Y-GOTO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm , Linux Hotplug Memory Support Cc: Nick Piggin , Mel Gorman List-ID: This is for calculation of the watermark zone->pages_min/low/high. Signed-off-by: Yasunori Goto --- Index: new_zone/include/linux/mmzone.h =================================================================== --- new_zone.orig/include/linux/mmzone.h 2005-11-09 16:40:29.000000000 +0900 +++ new_zone/include/linux/mmzone.h 2005-11-09 16:52:44.000000000 +0900 @@ -372,6 +372,11 @@ static inline struct zone *next_zone(str #define for_each_zone(zone) \ for (zone = pgdat_list->node_zones; zone; zone = next_zone(zone)) +static inline int is_easy_reclaim_idx(int idx) +{ + return (idx == ZONE_EASY_RECLAIM); +} + static inline int is_highmem_idx(int idx) { return (idx == ZONE_HIGHMEM); @@ -387,6 +392,11 @@ static inline int is_normal_idx(int idx) * to ZONE_{DMA/NORMAL/HIGHMEM/etc} in general code to a minimum. * @zone - pointer to struct zone variable */ +static inline int is_easy_reclaim(struct zone *zone) +{ + return zone == zone->zone_pgdat->node_zones + ZONE_EASY_RECLAIM; +} + static inline int is_highmem(struct zone *zone) { return zone == zone->zone_pgdat->node_zones + ZONE_HIGHMEM; Index: new_zone/mm/page_alloc.c =================================================================== --- new_zone.orig/mm/page_alloc.c 2005-11-09 16:40:29.000000000 +0900 +++ new_zone/mm/page_alloc.c 2005-11-09 16:40:33.000000000 +0900 @@ -2379,13 +2379,13 @@ static void setup_per_zone_pages_min(voi /* Calculate total number of !ZONE_HIGHMEM pages */ for_each_zone(zone) { - if (!is_highmem(zone)) + if (!is_highmem(zone) && !is_easy_reclaim(zone)) lowmem_pages += zone->present_pages; } for_each_zone(zone) { spin_lock_irqsave(&zone->lru_lock, flags); - if (is_highmem(zone)) { + if (is_highmem(zone) || is_easy_reclaim(zone)) { /* * Often, highmem doesn't need to reserve any pages. * But the pages_min/low/high values are also used for -- Yasunori Goto -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org