[PATCH] mm: simplify build_zonelists_node by removing the case statement.
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>
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@ -1455,35 +1455,23 @@ void show_free_areas(void)
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/*
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* Builds allocation fallback zone lists.
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*
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* Add all populated zones of a node to the zonelist.
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*/
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static int __init build_zonelists_node(pg_data_t *pgdat, struct zonelist *zonelist, int j, int k)
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static int __init build_zonelists_node(pg_data_t *pgdat,
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struct zonelist *zonelist, int j, int k)
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{
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switch (k) {
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struct zone *zone;
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default:
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BUG();
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case ZONE_HIGHMEM:
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zone = pgdat->node_zones + ZONE_HIGHMEM;
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if (zone->present_pages) {
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struct zone *zone;
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BUG_ON(k > ZONE_HIGHMEM);
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for (zone = pgdat->node_zones + k; zone >= pgdat->node_zones; zone--) {
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if (populated_zone(zone)) {
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#ifndef CONFIG_HIGHMEM
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BUG();
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BUG_ON(zone - pgdat->node_zones > ZONE_NORMAL);
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#endif
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zonelist->zones[j++] = zone;
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}
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case ZONE_NORMAL:
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zone = pgdat->node_zones + ZONE_NORMAL;
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if (zone->present_pages)
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zonelist->zones[j++] = zone;
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case ZONE_DMA32:
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zone = pgdat->node_zones + ZONE_DMA32;
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if (zone->present_pages)
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zonelist->zones[j++] = zone;
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case ZONE_DMA:
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zone = pgdat->node_zones + ZONE_DMA;
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if (zone->present_pages)
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zonelist->zones[j++] = zone;
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}
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return j;
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}
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