linux-kernel - Re: [PATCH] slab: prevent warnings when allocating with __GFP

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Message-ID: <51B73F38.6040802@kernel.org>
Date:	Tue, 11 Jun 2013 18:16:08 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...two.org>
CC:	Sasha Levin <sasha.levin@...cle.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] slab: prevent warnings when allocating with __GFP_NOWARN

On Tue, 11 Jun 2013, Sasha Levin wrote:
>> I think that leaving the warning makes sense to catch similar
>> things which are actually bugs - we had a similar issue with
>> /dev/kmsg (if I remember correctly) which actually pointed to
>> a bug.

On 6/11/13 6:14 PM, Christoph Lameter wrote:
> Right. Requesting an allocation larger than even supported by the page
> allocator from the slab allocators that are specializing in allocations of
> small objects is usually an indication of a problem in the code.

So you're OK with going forward with Sasha's patch? It's needed
because __GFP_NOWARN was specifically added there to fix this
issue earlier.

			Pekka
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