[Patch] New zone ZONE_EASY_RECLAIM take 4. (define ZONE_EASY_RECLAIM)[2/8]

[Yasunori Goto <y-goto@jp.fujitsu.com>]

This defines new zone ZONE_EASY_RECLAIM.
ZONES_SHIFT becomes 3.
And this patch add member of sysctl_lowmem_reserve_ratio[].


take3 -> take 4:
  fixed number of index of sysctl_lowmem_reserve_ratio[].
take 2 -> take 3:
  add sysctl_lowmem_reserve_ratio[].


Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>

Index: zone_reclaim/include/linux/mmzone.h
===================================================================
--- zone_reclaim.orig/include/linux/mmzone.h	2005-12-16 11:28:17.000000000 +0900
+++ zone_reclaim/include/linux/mmzone.h	2005-12-16 11:28:18.000000000 +0900
@@ -73,9 +73,10 @@ struct per_cpu_pageset {
 #define ZONE_DMA32		1
 #define ZONE_NORMAL		2
 #define ZONE_HIGHMEM		3
+#define ZONE_EASY_RECLAIM	4
 
-#define MAX_NR_ZONES		4	/* Sync this with ZONES_SHIFT */
-#define ZONES_SHIFT		2	/* ceil(log2(MAX_NR_ZONES)) */
+#define MAX_NR_ZONES		5	/* Sync this with ZONES_SHIFT */
+#define ZONES_SHIFT		3	/* ceil(log2(MAX_NR_ZONES)) */
 
 
 /*
Index: zone_reclaim/mm/page_alloc.c
===================================================================
--- zone_reclaim.orig/mm/page_alloc.c	2005-12-16 11:28:17.000000000 +0900
+++ zone_reclaim/mm/page_alloc.c	2005-12-16 11:40:33.000000000 +0900
@@ -68,7 +68,7 @@ static void fastcall free_hot_cold_page(
  * TBD: should special case ZONE_DMA32 machines here - in those we normally
  * don't need any ZONE_NORMAL reservation
  */
-int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 };
+int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = { 256, 256, 32 ,32};
 
 EXPORT_SYMBOL(totalram_pages);
 
@@ -79,7 +79,7 @@ EXPORT_SYMBOL(totalram_pages);
 struct zone *zone_table[1 << ZONETABLE_SHIFT] __read_mostly;
 EXPORT_SYMBOL(zone_table);
 
-static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem" };
+static char *zone_names[MAX_NR_ZONES] = { "DMA", "DMA32", "Normal", "HighMem", "Easy Reclaim"};
 int min_free_kbytes = 1024;
 
 unsigned long __initdata nr_kernel_pages;

-- 
Yasunori Goto 


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