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authorChristoph Lameter <clameter@sgi.com>2006-09-25 23:31:45 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:50 -0700
commit1192d526412b1b8ccb1493064cea06efc12c772b (patch)
tree8caa9e73ae1ead8d057ca6d273ed091c324e9ef9
parentbd1b1677b5d4f39deda068bf5cc43ce3aaec839f (diff)
downloadop-kernel-dev-1192d526412b1b8ccb1493064cea06efc12c772b.zip
op-kernel-dev-1192d526412b1b8ccb1493064cea06efc12c772b.tar.gz
[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>
-rw-r--r--mm/page_alloc.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ea498788..e8a7165 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -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;
}
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