Commit 0ecd702b authored by KAMEZAWA Hiroyuki's avatar KAMEZAWA Hiroyuki Committed by Linus Torvalds
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[PATCH] unify pfn_to_page: ia64 pfn_to_page 



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

Signed-off-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 655a0443

include/asm-ia64/page.h

+13 −5
Original line number Diff line number Diff line
@@ -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)