linux-kernel - Re: GFP_NOWAIT and GFP

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Message-ID: <20090929135925.50ac88bf@infradead.org>
Date:	Tue, 29 Sep 2009 13:59:25 +0200
From:	Arjan van de Ven <arjan@...radead.org>
To:	"Leonidas ." <leonidas137@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: GFP_NOWAIT and GFP_NOMEMALLOC

On Tue, 29 Sep 2009 16:55:24 +0530
"Leonidas ." <leonidas137@...il.com> wrote:

> Hi list,
> 
> I am new here, I have googled/binged enough before posting this
> message, in case of redundancy please point me to appropriate
> links/resources etc.
> 
> I want to kmalloc memory while holding spinlocks in process context,
> here I can't use GFP_KERNEL flag since it can sleep. Using GFP_ATOMIC
> guarantees that allocation will succeed by allocating from emergency
> pools if needed. But I dont think, I need to use emergency pool and I
> want to limit my memory consumption to ZONE_NORMAL without sleeping,
> my module is ready to handle the allocation failure if any.

GFP_NOWAIT is what you want.

can you give us a pointer to what your module is about? Maybe there's
better solutions...


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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