Messages in this thread Patch in this message | | | Date | Mon, 06 Feb 2006 19:56:29 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | [RFC][PATCH] unify pfn_to_page [7/25] h8300 pfn_to_page/page_to_pfn |
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Looks complicated.. original page_to_pfn() was (((page - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) >> PAGE_SHIFT. This is same to (unsigned long) (page - mem_map) + (PAGE_OFFSET >> PAGE_SHIFT).
h8300 can use generic ones. Signed-Off-By: KAMEZAWA Hiruyoki <kamezawa.hiroyu@jp.fujitsu.com>
Index: cleanup_pfn_page/include/asm-h8300/page.h =================================================================== --- cleanup_pfn_page.orig/include/asm-h8300/page.h +++ cleanup_pfn_page/include/asm-h8300/page.h @@ -71,8 +71,7 @@ extern unsigned long memory_end; #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) #define pfn_valid(page) (page < max_mapnr)
-#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) -#define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) +#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ ((void *)(kaddr) < (void *)memory_end)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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