From: Theodore Tso Subject: Re: [Bug 12579] ext4 filesystem hang Date: Fri, 13 Feb 2009 20:50:18 -0500 Message-ID: <20090214015018.GB26628@mini-me.lan> References: <20090213220606.AE8FC11D109@picon.linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: bugme-daemon@bugzilla.kernel.org Return-path: Received: from thunk.org ([69.25.196.29]:40120 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752466AbZBNCH0 (ORCPT ); Fri, 13 Feb 2009 21:07:26 -0500 Content-Disposition: inline In-Reply-To: <20090213220606.AE8FC11D109@picon.linux-foundation.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: > Patch from Aneesh, un-whitespace-mangled. > > Ted, can you push this out? Works great. :) We might want to ask > the other reporter of something similar (next-20090206: deadlock on > ext4) to test it too. I'll ping him. Do we completely understand the root cause, in terms of which commit broken the mm/page-writeback.c code we were depending on? And if so, what of the code in mm/page-writeback.c? Does anyone else use it? Can anyone sanely use it? And am I right in assuming that this only applies to 2.6.29-rcX kernels, and is not needed for 2.6.28 or earlier kernels? I hadn't yet pushed it out because I needed time to understand all of these issues, hence these questions.... - Ted