New zone ZONE_EASY_RECLAIM take 2[1/5]

This defines __GFP flag for new zone with GFP_DMA32.

Index: new_zone_mm/include/linux/gfp.h
=================================--- new_zone_mm.orig/include/linux/gfp.h 2005-11-17 16:47:04.000000000 +0900
+++ new_zone_mm/include/linux/gfp.h 2005-11-17 17:29:16.000000000 +0900
@@ -16,10 +16,13 @@ struct vm_area_struct;
#define __GFP_HIGHMEM ((__force gfp_t)0x02u)
#ifdef CONFIG_DMA_IS_DMA32
#define __GFP_DMA32 ((__force gfp_t)0x01) /* ZONE_DMA is ZONE_DMA32 */
+#define __GFP_EASY_RECLAIM ((__force gfp_t)0x04u)
#elif BITS_PER_LONG < 64
#define __GFP_DMA32 ((__force gfp_t)0x00) /* ZONE_NORMAL is ZONE_DMA32 */
+#define __GFP_EASY_RECLAIM ((__force gfp_t)0x04u)
#else
#define __GFP_DMA32 ((__force gfp_t)0x04) /* Has own ZONE_DMA32 */
+#define __GFP_EASY_RECLAIM ((__force gfp_t)0x08u)
#endif

/*
@@ -66,7 +69,7 @@ struct vm_area_struct;
#define GFP_USER (__GFP_VALID | __GFP_WAIT | __GFP_IO | __GFP_FS | \
__GFP_HARDWALL)
#define GFP_HIGHUSER (__GFP_VALID | __GFP_WAIT | __GFP_IO | __GFP_FS | \
- __GFP_HIGHMEM | __GFP_HARDWALL)
+ __GFP_HIGHMEM | __GFP_HARDWALL | __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_mm/include/linux/mmzone.h
=================================--- new_zone_mm.orig/include/linux/mmzone.h 2005-11-17 16:47:04.000000000 +0900
+++ new_zone_mm/include/linux/mmzone.h 2005-11-17 17:29:01.000000000 +0900
@@ -92,7 +92,7 @@ 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 0x0f

/*
* As an optimisation any zone modifier bits which are only valid when

Yasunori Goto