From mboxrd@z Thu Jan 1 00:00:00 1970 From: Damien Wyart Subject: Re: [PATCH 0/12] Per-bdi writeback flusher threads v7 Date: Tue, 26 May 2009 17:25:01 +0200 Message-ID: <20090526152501.GA20968@localhost.localdomain> References: <1243330430-9964-1-git-send-email-jens.axboe@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, chris.mason@oracle.com, david@fromorbit.com, hch@infradead.org, akpm@linux-foundation.org, jack@suse.cz, yanmin_zhang@linux.intel.com, richard@rsk.demon.co.uk To: Jens Axboe Return-path: Content-Disposition: inline In-Reply-To: <1243330430-9964-1-git-send-email-jens.axboe@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Hello, I have been playing with v7 since your sending and after a white (short on laptop, longer on desktop, a few hours), writeback doesn't seem to work anymore. Manual call to sync hangs (process in D state) and Dirty value in meminfo gets growing. As previous versions had been heavily tested, I guess there is some regression in v7. Best Damien Wyart > Here's the 7th version of the writeback patches. Changes since > v5/v6: > - Move the sync_supers() to the global bdi_forker_task() thread, so we > don't writeback the supers from all the bdi kupdated() tasks. > - Make bdi_start_writeback() and bdi_writeback_all() be sync when called > with WB_SYNC_ALL only. > - Shuffle some more things around to make a cleaner series. The sync vs > async nature of bdi_writeback_all() and bdi_start_writeback() isn't > consistent through the series, but otherwise things should be sane. > I'd appreciate if Richard and Yanmin could re-run testing with this, > just to make sure that things are sane. For ease of patching, I've > put the full diff here: > http://kernel.dk/writeback-v7.patch > and also stored this in a writeback-v7 branch that will not change, > you can pull that into Linus tree from here: > git://git.kernel.dk/linux-2.6-block.git writeback-v7 -- Damien Wyart