From: Andy Whitcroft Before SPARSEMEM is initialised we cannot provide an efficient pfn_to_nid() implmentation; before initialisation is complete we use early_pfn_to_nid() to provide location information. Until recently there was no non-init user of this functionality. Provide a post init pfn_to_nid() implementation. Note that this implmentation assumes that the pfn passed has been validated with pfn_valid(). The current single user of this function already has this check. Signed-off-by: Andy Whitcroft Signed-off-by: Andrew Morton --- include/linux/mmzone.h | 6 +++++- 1 files changed, 5 insertions(+), 1 deletion(-) diff -puN include/linux/mmzone.h~sparsemem-provide-pfn_to_nid include/linux/mmzone.h --- devel/include/linux/mmzone.h~sparsemem-provide-pfn_to_nid 2005-11-22 22:30:28.000000000 -0800 +++ devel-akpm/include/linux/mmzone.h 2005-11-22 22:30:28.000000000 -0800 @@ -596,7 +596,11 @@ static inline int pfn_valid(unsigned lon * this restriction. */ #ifdef CONFIG_NUMA -#define pfn_to_nid early_pfn_to_nid +#define pfn_to_nid(pfn) \ +({ \ + unsigned long __pfn_to_nid_pfn = (pfn); \ + page_to_nid(pfn_to_page(__pfn_to_nid_pfn)); \ +}) #else #define pfn_to_nid(pfn) (0) #endif _