Re: [PATCH 1/6] mm/page_alloc: fix same zone check in __pageblock_pfn_to_page()
From: Joonsoo Kim
Date: Tue Mar 22 2016 - 01:01:45 EST
On Mon, Mar 21, 2016 at 11:37:19AM +0000, Mel Gorman wrote:
> On Mon, Mar 14, 2016 at 04:31:32PM +0900, js1304@xxxxxxxxx wrote:
> > From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> > There is a system that node's pfn are overlapped like as following.
> > -----pfn-------->
> > N0 N1 N2 N0 N1 N2
> > Therefore, we need to care this overlapping when iterating pfn range.
> > In __pageblock_pfn_to_page(), there is a check for this but it's
> > not sufficient. This check cannot distinguish the case that zone id
> > is the same but node id is different. This patch fixes it.
> I think you may be mixing up page_zone_id with page_zonenum.
I will drop the patch. Thanks for catching it. :)