linux-kernel - Re: [GIT PULL v2] Early SLAB fixes for 2.6.31

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Message-ID: <84144f020906150210w7fa29042xc12efb4a087e3d26@mail.gmail.com>
Date:	Mon, 15 Jun 2009 12:10:01 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, cl@...ux-foundation.org,
	kamezawa.hiroyu@...fujitsu.com, lizf@...fujitsu.com, mingo@...e.hu,
	npiggin@...e.de, yinghai@...nel.org, benh@...nel.crashing.org
Subject: Re: [GIT PULL v2] Early SLAB fixes for 2.6.31

On Mon, Jun 15, 2009 at 11:18 AM, Heiko
Carstens<heiko.carstens@...ibm.com> wrote:
> I didn't look any deeper into this, but looks to me like doing something like
> schedule_work() this early isn't ok.
>
> This is the conversion that leads to the crash:
>
> -               alloc_bootmem_low(sizeof(struct raw3215_info));
> +               kzalloc(sizeof(struct raw3215_info), GFP_NOWAIT | GFP_DMA);
>
> Might be that I missed something. Maybe some special flag?

Btw, you should not need to use GFP_NOWAIT anymore and GFP_KERNEL
should be fine even during early boot.

                                   Pekka
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