linux-kernel - Re: [Intel-IOMMU 02/10] Library routine for pre-allocat pool handling

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Message-ID: <4669D55C.6040803@linux.intel.com>
Date:	Fri, 08 Jun 2007 15:17:00 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	"Keshavamurthy, Anil S" <anil.s.keshavamurthy@...el.com>,
	Andreas Kleen <ak@...e.de>, linux-kernel@...r.kernel.org,
	gregkh@...e.de, muli@...ibm.com, asit.k.mallick@...el.com,
	suresh.b.siddha@...el.com, ashok.raj@...el.com,
	shaohua.li@...el.com, davem@...emloft.net
Subject: Re: [Intel-IOMMU 02/10] Library routine for pre-allocat pool handling

Andrew Morton wrote:
> Put much effort into removing the GFP_ATOMIC and using GFP_NOIO instead:
> there's your problem right there.
> 
> If for some reason you really can't do that (and a requirement for
> allocation-in-interrupt is the only valid reason, really)

and that's the case here; IO gets submitted from IRQ handlers (both 
network and block).......
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