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From: Daniel Phillips <phillips@bonn-fries.net>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>, jdike@karaya.com (Jeff Dike)
Subject: Re: [RFC] Arch option to touch newly allocated pages
Date: Thu, 7 Mar 2002 14:36:08 +0100
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Cc: bcrl@redhat.com (Benjamin LaHaise), hpa@zytor.com (H. Peter Anvin),
        alan@lxorguk.ukuu.org.uk (Alan Cox), linux-kernel@vger.kernel.org
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On March 7, 2002 02:49 pm, Alan Cox wrote:
> Jeff Dike Apparently wrote
> > caller.  This is actually wrong because in this failure case, it effectively
> > changes the semantics of GFP_USER, GFP_KERNEL, and the other blocking GFP_* 
> > allocations to GFP_ATOMIC.  And that's what forced UML to segfault the 
> > compilations.
> 
> GFP_KERNEL will sometimes return NULL.

Sad but true.  IMHO we are on track to fix that in this kernel cycle, with
better locked/dirty accounting and rmap to forcibly unmap pages when necessary.

-- 
Daniel
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