Messages in this thread | | | Date | Mon, 21 Mar 2016 11:37:19 +0000 | From | Mel Gorman <> | Subject | Re: [PATCH 1/6] mm/page_alloc: fix same zone check in __pageblock_pfn_to_page() |
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On Mon, Mar 14, 2016 at 04:31:32PM +0900, js1304@gmail.com wrote: > From: Joonsoo Kim <iamjoonsoo.kim@lge.com> > > 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.
-- Mel Gorman SUSE Labs
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