From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764923AbXKNV1l (ORCPT ); Wed, 14 Nov 2007 16:27:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755021AbXKNV1b (ORCPT ); Wed, 14 Nov 2007 16:27:31 -0500 Received: from pat.uio.no ([129.240.10.15]:33875 "EHLO pat.uio.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754170AbXKNV13 (ORCPT ); Wed, 14 Nov 2007 16:27:29 -0500 Subject: Re: [PATCH 0/3] mmap vs NFS From: Trond Myklebust To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, Linus Torvalds , Andrew Morton , Nick Piggin , Hugh Dickins In-Reply-To: <20071114200136.009242000@chello.nl> References: <20071114200136.009242000@chello.nl> Content-Type: text/plain Date: Wed, 14 Nov 2007 16:27:32 -0500 Message-Id: <1195075652.7584.61.camel@heimdal.trondhjem.org> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit X-UiO-Resend: resent X-UiO-ClamAV-Virus: No X-UiO-Spam-info: not spam, SpamAssassin (score=0.1, required=12.0, autolearn=disabled, AWL=0.072) X-UiO-Scanned: 27D0CAF22A11F00001FEF1DE65A80272F33E56CD X-UiO-SPAM-Test: remote_host: 129.240.10.9 spam_score: 1 maxlevel 200 minaction 2 bait 0 mail/h: 497 total 5136496 max/h 8345 blacklist 0 greylist 0 ratelimit 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2007-11-14 at 21:01 +0100, Peter Zijlstra wrote: > Currently there is an AB-BA deadlock in NFS mmap. > > nfs_file_mmap() can take i_mutex, while holding mmap_sem, whereas the regular > locking order is the other way around. > > This patch-set attempts to solve this issue. Looks good from the NFS point of view. Acked-by: Trond Myklebust