linux-kernel - Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon

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Message-ID: <4BBF94C2.9070105@redhat.com>
Date:	Fri, 09 Apr 2010 16:57:38 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Johannes Weiner <hannes@...xchg.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Nick Piggin <npiggin@...e.de>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	sgunderson@...foot.com
Subject: Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon_vmas
 of a mergeable VMA

On 04/09/2010 04:43 PM, Johannes Weiner wrote:

> Okay, I think I got it working.  I first thought we would need an
> m^n loop to properly merge the anon_vma_chains, but we can actually
> be cleverer than that:

I've looked it over 5 times, can't find anything wrong
with it.  Your approach looks like it should work just
fine.

Certainly easier than the things Linus and I tried :)

> Signed-off-by: Johannes Weiner<hannes@...xchg.org>

Reviewed-by: Rik van Riel <riel@...hat.com>
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