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[PATCH] Cleanup: Add zone pointer to get_page_from_freelist 

There are frequent references to *z in get_page_from_freelist.

Add an explicit zone variable that can be used in all these places.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-09-25 23:31:45 -07:00 committed by Linus Torvalds
parent bd1b1677b5
commit 1192d52641
1 changed files with 10 additions and 8 deletions
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18
mm/page_alloc.c
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@ -887,35 +887,37 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order,
struct zone **z = zonelist->zones;
struct page *page = NULL;
int classzone_idx = zone_idx(*z);
struct zone *zone;
/*
* Go through the zonelist once, looking for a zone with enough free.
* See also cpuset_zone_allowed() comment in kernel/cpuset.c.
*/
do {
zone = *z;
if (unlikely((gfp_mask & __GFP_THISNODE) &&
(*z)->zone_pgdat != zonelist->zones[0]->zone_pgdat))
zone->zone_pgdat != zonelist->zones[0]->zone_pgdat))
break;
if ((alloc_flags & ALLOC_CPUSET) &&
!cpuset_zone_allowed(*z, gfp_mask))
!cpuset_zone_allowed(zone, gfp_mask))
continue;
if (!(alloc_flags & ALLOC_NO_WATERMARKS)) {
unsigned long mark;
if (alloc_flags & ALLOC_WMARK_MIN)
mark = (*z)->pages_min;
mark = zone->pages_min;
else if (alloc_flags & ALLOC_WMARK_LOW)
mark = (*z)->pages_low;
mark = zone->pages_low;
else
mark = (*z)->pages_high;
if (!zone_watermark_ok(*z, order, mark,
mark = zone->pages_high;
if (!zone_watermark_ok(zone , order, mark,
classzone_idx, alloc_flags))
if (!zone_reclaim_mode ||
!zone_reclaim(*z, gfp_mask, order))
!zone_reclaim(zone, gfp_mask, order))
continue;
}
page = buffered_rmqueue(zonelist, *z, order, gfp_mask);
page = buffered_rmqueue(zonelist, zone, order, gfp_mask);
if (page) {
break;
}