diff options
Diffstat (limited to 'include/asm-generic/memory_model.h')
| -rw-r--r-- | include/asm-generic/memory_model.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index a3b5029aebbd..efa6610acbc7 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -30,7 +30,15 @@ static inline int pfn_valid(unsigned long pfn) return pfn >= pfn_offset && (pfn - pfn_offset) < max_mapnr; } #define pfn_valid pfn_valid -#endif + +#ifndef for_each_valid_pfn +#define for_each_valid_pfn(pfn, start_pfn, end_pfn) \ + for ((pfn) = max_t(unsigned long, (start_pfn), ARCH_PFN_OFFSET); \ + (pfn) < min_t(unsigned long, (end_pfn), \ + ARCH_PFN_OFFSET + max_mapnr); \ + (pfn)++) +#endif /* for_each_valid_pfn */ +#endif /* valid_pfn */ #elif defined(CONFIG_SPARSEMEM_VMEMMAP) @@ -45,7 +53,7 @@ static inline int pfn_valid(unsigned long pfn) */ #define __page_to_pfn(pg) \ ({ const struct page *__pg = (pg); \ - int __sec = page_to_section(__pg); \ + int __sec = memdesc_section(__pg->flags); \ (unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \ }) |