Re: [PATCH] Periodically drain non local pagesets

[Christoph Lameter <clameter@engr.sgi.com>]

On Wed, 1 Jun 2005, Dave Hansen wrote:

> Also, are you sure that you need the local_irq_en/disable()?  

drain_pages() does the same. We would run into trouble if an 
interrupt would use the page allocator.

Fix for the zone comparison:

Index: linux-2.6.12-rc5/mm/page_alloc.c
===================================================================
--- linux-2.6.12-rc5.orig/mm/page_alloc.c	2005-06-01 10:41:25.000000000 -0700
+++ linux-2.6.12-rc5/mm/page_alloc.c	2005-06-01 11:57:55.000000000 -0700
@@ -528,7 +528,7 @@ void drain_remote_pages(void)
 		struct per_cpu_pageset *pset;
 
 		/* Do not drain local pagesets */
-		if (zone == zone_table[numa_node_id()])
+		if (zone->zone_pgdat->node_id == numa_node_id())
 			continue;
 
 		pset = zone->pageset[smp_processor_id()];
-
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