diff options
| -rw-r--r-- | include/linux/mmzone.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 88c30f844abf..ebfc238cc243 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h | |||
| @@ -98,11 +98,14 @@ struct per_cpu_pageset { | |||
| 98 | * of three zone modifier bits, we could require up to eight zonelists. | 98 | * of three zone modifier bits, we could require up to eight zonelists. |
| 99 | * If the left most zone modifier is a "loner" then the highest valid | 99 | * If the left most zone modifier is a "loner" then the highest valid |
| 100 | * zonelist would be four allowing us to allocate only five zonelists. | 100 | * zonelist would be four allowing us to allocate only five zonelists. |
| 101 | * Use the first form for GFP_ZONETYPES when the left most bit is not | ||
| 102 | * a "loner", otherwise use the second. | ||
| 101 | * | 103 | * |
| 102 | * NOTE! Make sure this matches the zones in <linux/gfp.h> | 104 | * NOTE! Make sure this matches the zones in <linux/gfp.h> |
| 103 | */ | 105 | */ |
| 104 | #define GFP_ZONEMASK 0x07 | 106 | #define GFP_ZONEMASK 0x07 |
| 105 | #define GFP_ZONETYPES 5 | 107 | /* #define GFP_ZONETYPES (GFP_ZONEMASK + 1) */ /* Non-loner */ |
| 108 | #define GFP_ZONETYPES ((GFP_ZONEMASK + 1) / 2 + 1) /* Loner */ | ||
| 106 | 109 | ||
| 107 | /* | 110 | /* |
| 108 | * On machines where it is needed (eg PCs) we divide physical memory | 111 | * On machines where it is needed (eg PCs) we divide physical memory |