linux-kernel - Re: Allocating memory aligned on 1M boundary?

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Message-ID: <AANLkTi=porFYjmX57uNohLqwdszieyRSaEgVUhgH6z0j@mail.gmail.com>
Date:	Wed, 25 Aug 2010 14:34:54 -0500
From:	Timur Tabi <timur@...escale.com>
To:	david.hagood@...il.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Allocating memory aligned on 1M boundary?

On Wed, Aug 25, 2010 at 1:35 PM,  <david.hagood@...il.com> wrote:

> Yes, I could allocate 2x the desired size, then use that part of what I
> allocate that is correctly aligned, but then I am guaranteed to waste half
> of what I allocate.

You can use the mechanism used in alloc_pages_exact() to free the
pages that you don't need.

-- 
Timur Tabi
Linux kernel developer at Freescale
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