linux-kernel - Re: [PATCH 4/6] mm/page_owner: introduce split_page

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Message-ID: <5731FABA.8070308@suse.cz>
Date:	Tue, 10 May 2016 17:14:02 +0200
From:	Vlastimil Babka <vbabka@...e.cz>
To:	js1304@...il.com, Andrew Morton <akpm@...ux-foundation.org>
Cc:	mgorman@...hsingularity.net, Minchan Kim <minchan@...nel.org>,
	Alexander Potapenko <glider@...gle.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH 4/6] mm/page_owner: introduce split_page_owner and replace
 manual handling

On 05/03/2016 07:23 AM, js1304@...il.com wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@....com>
>
> split_page() calls set_page_owner() to set up page_owner to each pages.
> But, it has a drawback that head page and the others have different
> stacktrace because callsite of set_page_owner() is slightly differnt.
> To avoid this problem, this patch copies head page's page_owner to
> the others. It needs to introduce new function, split_page_owner() but
> it also remove the other function, get_page_owner_gfp() so looks good
> to do.

OK.

Acked-by: Vlastimil Babka <vbabka@...e.cz>