From: Yasunori Goto <y-goto@jp.fujitsu.com>
To: linux-mm <linux-mm@kvack.org>,
Linux Hotplug Memory Support <lhms-devel@lists.sourceforge.net>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, Mel Gorman <mel@csn.ul.ie>
Subject: [Patch:RFC] New zone ZONE_EASY_RECLAIM[5/5]
Date: Thu, 10 Nov 2005 19:41:25 +0900 [thread overview]
Message-ID: <20051110190132.023A.Y-GOTO@jp.fujitsu.com> (raw)
This is for calculation of the watermark zone->pages_min/low/high.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
---
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
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reply other threads:[~2005-11-10 10:41 UTC|newest]
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