Message-ID: <4FE48054.5090407@redhat.com>
Date: Fri, 22 Jun 2012 10:25:24 -0400
From: Rik van Riel <riel@redhat.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: Rik van Riel <riel@surriel.com>, linux-mm@kvack.org,
        akpm@linux-foundation.org, aarcange@redhat.com, minchan@gmail.com,
        kosaki.motohiro@gmail.com, andi@firstfloor.org, hannes@cmpxchg.org,
        mel@csn.ul.ie, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm v2 01/11] mm: track free size between VMAs in VMA
 rbtree
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On 06/22/2012 10:13 AM, Peter Zijlstra wrote:
> On Fri, 2012-06-22 at 10:11 -0400, Rik van Riel wrote:
>>
>> I am still trying to wrap my brain around your alternative
>> search algorithm, not sure if/how it can be combined with
>> arbitrary address limits and alignment...
>
> for alignment we can do: len += align - 1;

We could, but that might lead us to returning -ENOMEM
when we actually have memory available.

When you consider architectures like HPPA, which use
a pretty large alignment, but align everything the same,
chances are pretty much every freed hole will have the
right alignment...

> Will indeed need to ponder the range thing ;-)


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