linux-kernel - Re: [patch v2 1/3] mm: remove GFP

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Message-ID: <54F48E68.6070706@suse.cz>
Date:	Mon, 02 Mar 2015 17:23:04 +0100
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Christoph Lameter <cl@...ux.com>
CC:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Johannes Weiner <hannes@...xchg.org>,
	Mel Gorman <mgorman@...e.de>,
	Pravin Shelar <pshelar@...ira.com>,
	Jarno Rajahalme <jrajahalme@...ira.com>,
	Li Zefan <lizefan@...wei.com>,
	Greg Thelen <gthelen@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, netdev@...r.kernel.org,
	cgroups@...r.kernel.org, dev@...nvswitch.org
Subject: Re: [patch v2 1/3] mm: remove GFP_THISNODE

On 03/02/2015 05:08 PM, Christoph Lameter wrote:
> On Mon, 2 Mar 2015, Vlastimil Babka wrote:
>
>>> You are thinking about an opportunistic allocation attempt in SLAB?
>>>
>>> AFAICT SLAB allocations should trigger reclaim.
>>>
>>
>> Well, let me quote your commit 952f3b51beb5:
>
> This was about global reclaim. Local reclaim is good and that can be
> done via zone_reclaim.

Right, so the patch is a functional change for zone_reclaim_mode == 1, 
where !__GFP_WAIT will prevent it.

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