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[PATCH] unify pfn_to_page: ia64 pfn_to_page

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ia64 has special config CONFIG_VIRTUAL_MEM_MAP.
CONFIG_DISCONTIGMEM=y && CONFIG_VIRTUAL_MEM_MAP!=y is bug ?

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
KAMEZAWA Hiroyuki 2006-03-27 01:15:53 -08:00 committed by Linus Torvalds
parent 655a044347
commit 0ecd702bcb
1 changed files with 13 additions and 5 deletions
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18
include/asm-ia64/page.h
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@ -106,17 +106,25 @@ extern int ia64_pfn_valid (unsigned long pfn);
# define ia64_pfn_valid(pfn) 1
#endif
#ifdef CONFIG_VIRTUAL_MEM_MAP
extern struct page *vmem_map;
#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn) (vmem_map + (pfn))
#endif
#endif
#if defined(CONFIG_FLATMEM) || defined(CONFIG_SPARSEMEM)
/* FLATMEM always configures mem_map (mem_map = vmem_map if necessary) */
#include <asm-generic/memory_model.h>
#endif
#ifdef CONFIG_FLATMEM
# define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
# define page_to_pfn(page) ((unsigned long) (page - mem_map))
# define pfn_to_page(pfn) (mem_map + (pfn))
#elif defined(CONFIG_DISCONTIGMEM)
extern struct page *vmem_map;
extern unsigned long min_low_pfn;
extern unsigned long max_low_pfn;
# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn) (vmem_map + (pfn))
#endif
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)