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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-05-22 20:28:35 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-05-22 20:28:35 +0200 |
| commit | 9bd7de51ee8537094656149eaf45338cadb7d7d4 (patch) | |
| tree | a691987319dfcdb07de2bce619746f88d26882c4 /mm/mmzone.c | |
| parent | e4b636366c00738b9609cda307014d71b1225b7f (diff) | |
| parent | 6a44587ee716ac911082cbdec766e5b3f051c071 (diff) | |
Merge branch 'master' into for-2.6.31
Conflicts:
drivers/ide/ide-io.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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 16ce8b955dc..f5b7d176021 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 */ |