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| author | Dmitry Torokhov <dtor@insightbb.com> | 2007-05-08 01:31:11 -0400 |
|---|---|---|
| committer | Dmitry Torokhov <dtor@insightbb.com> | 2007-05-08 01:31:11 -0400 |
| commit | 334d0dd8b660557608142f0f77abc6812b48f08b (patch) | |
| tree | 9393a9aa099d7d42deda5f9f5054796c0c769be7 /include/linux/mmzone.h | |
| parent | 3f07d8796262f6aee135c8dd9a91210da9f888e4 (diff) | |
| parent | 5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index ee9e3143df4f..2f1544e83042 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -784,6 +784,18 @@ void sparse_init(void); void memory_present(int nid, unsigned long start, unsigned long end); unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long); +/* + * If it is possible to have holes within a MAX_ORDER_NR_PAGES, then we + * need to check pfn validility within that MAX_ORDER_NR_PAGES block. + * pfn_valid_within() should be used in this case; we optimise this away + * when we have no holes within a MAX_ORDER_NR_PAGES block. + */ +#ifdef CONFIG_HOLES_IN_ZONE +#define pfn_valid_within(pfn) pfn_valid(pfn) +#else +#define pfn_valid_within(pfn) (1) +#endif + #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _LINUX_MMZONE_H */ |