linux-kernel - Re: Problem: Out of memory after 2days with 2GB RAM

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Date:	Thu, 12 Jun 2008 19:05:35 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Tomas Winkler <tomasw@...il.com>
Cc:	Rik van Riel <riel@...hat.com>,
	Zdenek Kabelac <zdenek.kabelac@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	yi.zhu@...el.com, reinette.chatre@...el.com,
	linux-wireless@...r.kernel.org
Subject: Re: Problem: Out of memory after 2days with 2GB RAM


> > Probably. it would be safe to use vmalloc for allocating txb anyway.
> > I'll give it a try.
> 
> So vmalloc  didn't break anything on the 32bit machine I'm just about
> to install 64 one so it will take hour or two.. I will issue some
> official patch after that.

Well, I disagree, and I'll push my patch as soon as somebody confirms
that it doesn't break anything.

> > There was already discussion on LKML about memory allocation problems
> > on X86_64, which might explain this regression. This didn't happen
> > before.
> 
> This is  the thread title if you are interested.
> 'x86/kernel/pci_dma.c: gfp |= __GFP_NORETRY'

Like I said, it doesn't matter, there's no need to _waste_
18*256*sizeof(void *) bytes memory.

johannes

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