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| author | Ingo Molnar <mingo@elte.hu> | 2009-06-01 10:01:03 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-01 10:01:39 +0200 |
| commit | 23db9f430be9325a861c7762c1ffadad9ca528a8 (patch) | |
| tree | 1ebb681611c96f17aa4f96e28d6923824a8b210f /mm/mmzone.c | |
| parent | 27b9613b7be39412775d0ab80f57229aa73bb07d (diff) | |
| parent | 3218911f839b6c85acbf872ad264ea69aa4d89ad (diff) | |
Merge branch 'linus' into perfcounters/core
Merge reason: merge almost-rc8 into perfcounters/core, which was -rc6
based - to pick up the latest upstream fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 */ |