linux-kernel - Re: [PATCH V2 1/2] mm/vmscan: restore sc->gfp_mask after promoting it to __GFP

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Message-ID: <52FE2511.1010004@redhat.com>
Date:	Fri, 14 Feb 2014 09:15:45 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Weijie Yang <weijie.yang@...sung.com>,
	"'Mel Gorman'" <mgorman@...e.de>
CC:	"'Andrew Morton'" <akpm@...ux-foundation.org>,
	"'Minchan Kim'" <minchan@...nel.org>, weijie.yang.kh@...il.com,
	"'Linux-MM'" <linux-mm@...ck.org>,
	"'linux-kernel'" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 1/2] mm/vmscan: restore sc->gfp_mask after promoting
 it to __GFP_HIGHMEM

On 02/14/2014 01:41 AM, Weijie Yang wrote:
> We promote sc->gfp_mask to __GFP_HIGHMEM to forcibly scan highmem if
> there are too many buffer_heads pinning highmem. see: cc715d99e5
> 
> This patch restores sc->gfp_mask to its caller original value after
> finishing the scan job, to avoid the impact on other invocations from
> its upper caller, such as vmpressure_prio(), shrink_slab().
> 
> Signed-off-by: Weijie Yang <weijie.yang@...sung.com>

Acked-by: Rik van Riel <riel@...hat.com>

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