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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-13 21:49:12 +0300 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-13 21:49:12 +0300 |
| commit | fe377e8fb3f67d66590e41e99cd6e207d585f7dd (patch) | |
| tree | aef88767bd67100120fce449f9b21da433865969 /mm/mmzone.c | |
| parent | 946524efb4912687b6e02e831b5fbedc4c9395c0 (diff) | |
| parent | f3ad116588151b3371ae4e092290e4f48e62b8bb (diff) | |
Merge commit 'linus/master' into topic/slqb/core
Conflicts:
lib/Kconfig.debug
Diffstat (limited to 'mm/mmzone.c')
| -rw-r--r-- | mm/mmzone.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/mm/mmzone.c b/mm/mmzone.c index 16ce8b955dcf..f5b7d1760213 100644 --- a/mm/mmzone.c +++ b/mm/mmzone.c @@ -6,6 +6,7 @@ #include <linux/stddef.h> +#include <linux/mm.h> #include <linux/mmzone.h> #include <linux/module.h> @@ -72,3 +73,17 @@ struct zoneref *next_zones_zonelist(struct zoneref *z, *zone = zonelist_zone(z); return z; } + +#ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL +int memmap_valid_within(unsigned long pfn, + struct page *page, struct zone *zone) +{ + if (page_to_pfn(page) != pfn) + return 0; + + if (page_zone(page) != zone) + return 0; + + return 1; +} +#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */ |