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[PATCH] sparsemem base: reorganize page->flags bit operations

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Generify the value fields in the page_flags.  The aim is to allow the location
and size of these fields to be varied.  Additionally we want to move away from
fixed allocations per field whilst still enforcing the overall bit utilisation
limits.  We rely on the compiler to spot and optimise the accessor functions.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dave Hansen
2005-06-23 00:07:40 -07:00
committed by Linus Torvalds
parent 6f167ec721
commit 348f8b6c48
3 changed files with 52 additions and 22 deletions
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mm/page_alloc.c
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@@ -1653,7 +1653,7 @@ void __init memmap_init_zone(unsigned long size, int nid, unsigned long zone,
struct page *page;
for (page = start; page < (start + size); page++) {
set_page_zone(page, NODEZONE(nid, zone));
set_page_links(page, zone, nid);
set_page_count(page, 0);
reset_page_mapcount(page);
SetPageReserved(page);