[patch 1/3] remove unused pgdat in sparsemem add_section

[Matt Tolentino <metolent@cs.vt.edu>]

Trivial patch to remove an used variable in the __add_section 
function.  Looks like pgdat updating was moved into a subfunction.  

Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com>
---

diff -urNp linux-2.6.15-rc5/mm/memory_hotplug.c linux-2.6.15-rc5-mt/mm/memory_hotplug.c
--- linux-2.6.15-rc5/mm/memory_hotplug.c	2005-12-04 00:10:42.000000000 -0500
+++ linux-2.6.15-rc5-mt/mm/memory_hotplug.c	2005-12-08 15:41:46.000000000 -0500
@@ -42,7 +42,6 @@ extern int sparse_add_one_section(struct
 				  int nr_pages);
 static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
 {
-	struct pglist_data *pgdat = zone->zone_pgdat;
 	int nr_pages = PAGES_PER_SECTION;
 	int ret;
 
-
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