linux-kernel - Re: __get_free_pages: can GFP_DMA omit GFP_KERNEL and GFP

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Message-ID: <Pine.LNX.4.64.0706041201210.24550@schroedinger.engr.sgi.com>
Date:	Mon, 4 Jun 2007 12:02:59 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: __get_free_pages:  can GFP_DMA omit GFP_KERNEL and GFP_ATOMIC?

On Mon, 4 Jun 2007, Robert P. J. Day wrote:

> all right, then some of those __get_free_pages() calls would translate
> to calls of the form __get_dma_pages(0, ...) -- is that what you're
> saying?  or would it be equivalent and preferable to put GFP_ATOMIC in
> there just so it looks not so weird?

Put GFP_ATOMIC in there so that it does not look weird.

GFP_ATOMIC & ~__GFP_HIGH == GFP_NOWAIT

So these should have GFP_NOWAIT as far as I can tell?

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