linux-kernel - Re: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or suspending

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Date:	Sat, 20 Jun 2009 08:27:29 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Pekka J Enberg <penberg@...helsinki.fi>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu, npiggin@...e.de,
	akpm@...ux-foundation.org, cl@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or
 suspending

On Fri, 2009-06-19 at 16:59 +0200, Pavel Machek wrote:
> 
> Ok... GFP_KERNEL allocations normally don't fail; now they
> will. Should we at least force access to atomic reserves in such case?

No. First, code that assumes GFP_KERNEL don't fail is stupid. Any
allocation should always be assumed to potentially fail.

Then, if you start failing allocations at boot time, then you aren't
going anywhere are you ?

Cheers,
Ben.


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