[Patch] Fix calculation of grow_pgdat_span() in mm/memory_hotplug.c

From: Yasunori Goto
Date: Tue Dec 13 2005 - 08:21:24 EST


Dave-san.
CC: Andrew-san.

I realized 2.6.15-rc5 still has a bug for memory hotplug.
The calculation for node_spanned_pages at grow_pgdat_span() is
clearly wrong. This is patch for it.

(Please see grow_zone_span() to compare. It is correct.)

Thanks.

Signed-off-by: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>

Index: zone_reclaim/mm/memory_hotplug.c
===================================================================
--- zone_reclaim.orig/mm/memory_hotplug.c 2005-12-13 21:38:16.000000000 +0900
+++ zone_reclaim/mm/memory_hotplug.c 2005-12-13 21:39:14.000000000 +0900
@@ -104,7 +104,7 @@ static void grow_pgdat_span(struct pglis
pgdat->node_start_pfn = start_pfn;

if (end_pfn > old_pgdat_end_pfn)
- pgdat->node_spanned_pages = end_pfn - pgdat->node_spanned_pages;
+ pgdat->node_spanned_pages = end_pfn - pgdat->node_start_pfn;
}

int online_pages(unsigned long pfn, unsigned long nr_pages)

--
Yasunori Goto


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/