From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753559AbaEWReJ (ORCPT ); Fri, 23 May 2014 13:34:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55504 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751940AbaEWReH (ORCPT ); Fri, 23 May 2014 13:34:07 -0400 Message-ID: <537F8671.9040805@redhat.com> Date: Fri, 23 May 2014 13:33:37 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Davidlohr Bueso , akpm@linux-foundation.org CC: mingo@kernel.org, peterz@infradead.org, mgorman@suse.de, aswin@hp.com, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/5] mm: convert i_mmap_mutex to rwsem References: <1400816006-3083-1-git-send-email-davidlohr@hp.com> <1400816006-3083-4-git-send-email-davidlohr@hp.com> In-Reply-To: <1400816006-3083-4-git-send-email-davidlohr@hp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/22/2014 11:33 PM, Davidlohr Bueso wrote: > The i_mmap_mutex is a close cousin of the anon vma lock, > both protecting similar data, one for file backed pages > and the other for anon memory. To this end, this lock can > also be a rwsem. > > This conversion is straightforward. For now, all users take > the write lock. > > Signed-off-by: Davidlohr Bueso Reviewed-by: Rik van Riel -- All rights reversed