[Patch:RFC] New zone ZONE_EASY_RECLAIM[1/5]

[Patch:RFC] New zone ZONE_EASY_RECLAIM[1/5]

[Yasunori Goto]

This defines __GFP flag for new zone.

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

---

Index: new_zone/include/linux/gfp.h
===================================================================
--- new_zone.orig/include/linux/gfp.h	2005-11-08 14:17:57.000000000 +0900
+++ new_zone/include/linux/gfp.h	2005-11-08 17:24:20.000000000 +0900
@@ -14,6 +14,7 @@ struct vm_area_struct;
 /* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low two bits) */
 #define __GFP_DMA	0x01u
 #define __GFP_HIGHMEM	0x02u
+#define __GFP_EASY_RECLAIM 0x04u
 
 /*
  * Action modifiers - doesn't change the zoning
@@ -57,7 +58,7 @@ struct vm_area_struct;
 #define GFP_KERNEL	(__GFP_WAIT | __GFP_IO | __GFP_FS)
 #define GFP_USER	(__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL)
 #define GFP_HIGHUSER	(__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL | \
-			 __GFP_HIGHMEM)
+			 __GFP_HIGHMEM | __GFP_EASY_RECLAIM)
 
 /* Flag - indicates that the buffer will be suitable for DMA.  Ignored on some
    platforms, used as appropriate on others */
Index: new_zone/include/linux/mmzone.h
===================================================================
--- new_zone.orig/include/linux/mmzone.h	2005-11-08 14:17:57.000000000 +0900
+++ new_zone/include/linux/mmzone.h	2005-11-08 17:23:23.000000000 +0900
@@ -90,7 +90,7 @@ struct per_cpu_pageset {
  * be 8 (2 ** 3) zonelists.  GFP_ZONETYPES defines the number of possible
  * combinations of zone modifiers in "zone modifier space".
  */
-#define GFP_ZONEMASK	0x03
+#define GFP_ZONEMASK	0x07
 /*
  * As an optimisation any zone modifier bits which are only valid when
  * no other zone modifier bits are set (loners) should be placed in

-- 
Yasunori Goto 


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