[PATCH] remove zone_mem_map

This patch removes zone_mem_map.

pfn_to_page uses pgdat, page_to_pfn uses zone.  page_to_pfn can use pgdat
instead of zone, which is only one user of zone_mem_map.  By modifing it,
we can remove zone_mem_map.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Christoph Lameter <christoph@lameter.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 01:15:55 -08:00
committed by Linus Torvalds
parent 0ecd702bcb
commit a0140c1d85
4 changed files with 8 additions and 12 deletions

View File

@@ -45,11 +45,11 @@ extern unsigned long page_to_pfn(struct page *page);
NODE_DATA(__nid)->node_mem_map + arch_local_page_offset(__pfn, __nid);\
})
#define page_to_pfn(pg) \
({ struct page *__pg = (pg); \
struct zone *__zone = page_zone(__pg); \
(unsigned long)(__pg - __zone->zone_mem_map) + \
__zone->zone_start_pfn; \
#define page_to_pfn(pg) \
({ struct page *__pg = (pg); \
struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \
(unsigned long)(__pg - __pgdat->node_mem_map) + \
__pgdat->node_start_pfn; \
})
#elif defined(CONFIG_SPARSEMEM)