Commit 13466c84 authored Jun 01, 2007 by Yasunori Goto Committed by Linus Torvalds Jun 01, 2007

memory hotplug: fix unnecessary calling of init_currenty_empty_zone()



zone->present_pages is updated in online_pages().  But, __add_zone() can be
called twice or more before calling online_pages().  So,
init_currenty_empty_zone() can be called unnecessary times.  It is cause of
memory leak of zone's wait_table.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 6cd8fa87

mm/memory_hotplug.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -65,7 +65,7 @@ static int __add_zone(struct zone *zone, unsigned long phys_start_pfn)
		int zone_type;

		zone_type = zone - pgdat->node_zones;
		if (!populated_zone(zone)) {
		if (!zone->wait_table) {
		int ret = 0;
		ret = init_currently_empty_zone(zone, phys_start_pfn,
		nr_pages, MEMMAP_HOTPLUG);