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[PATCH] mm: simplify build_zonelists_node by removing the case statement.

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Simplify build_zonelists_node by removing the case statement.

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
2006-01-06 00:11:16 -08:00
committed by Linus Torvalds
parent f3fe65122d
commit 1a93205bdf
1 changed files with 10 additions and 22 deletions
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30
mm/page_alloc.c
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@@ -1455,35 +1455,23 @@ void show_free_areas(void)
/* /*
* Builds allocation fallback zone lists. * Builds allocation fallback zone lists.
*
* Add all populated zones of a node to the zonelist.
*/ */
static int __init build_zonelists_node(pg_data_t *pgdat, struct zonelist *zonelist, int j, int k) static int __init build_zonelists_node(pg_data_t *pgdat,
struct zonelist *zonelist, int j, int k)
{ {
switch (k) {
struct zone *zone; struct zone *zone;
default:
BUG(); BUG_ON(k > ZONE_HIGHMEM);
case ZONE_HIGHMEM: for (zone = pgdat->node_zones + k; zone >= pgdat->node_zones; zone--) {
zone = pgdat->node_zones + ZONE_HIGHMEM; if (populated_zone(zone)) {
if (zone->present_pages) {
#ifndef CONFIG_HIGHMEM #ifndef CONFIG_HIGHMEM
BUG(); BUG_ON(zone - pgdat->node_zones > ZONE_NORMAL);
#endif #endif
zonelist->zones[j++] = zone; zonelist->zones[j++] = zone;
} }
case ZONE_NORMAL:
zone = pgdat->node_zones + ZONE_NORMAL;
if (zone->present_pages)
zonelist->zones[j++] = zone;
case ZONE_DMA32:
zone = pgdat->node_zones + ZONE_DMA32;
if (zone->present_pages)
zonelist->zones[j++] = zone;
case ZONE_DMA:
zone = pgdat->node_zones + ZONE_DMA;
if (zone->present_pages)
zonelist->zones[j++] = zone;
} }
return j; return j;
} }