From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: [patch] ide tcq for 2.4.19-pre8 Date: Fri, 17 May 2002 08:36:07 +0200 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20020517063607.GA1109@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline List-Id: linux-ide@vger.kernel.org To: Linux Kernel Cc: Linux IDE , "Andre M. Hedrick" Hi, Fixed a few bugs and missing functionality (recovery) since the initial 2.4 version. Changelog: - (generic tcq) use list_for_each_safe() in blk_queue_invalidate_tags(), we are removing entries while browsning. - (ide tcq) remember to honor max depth set. - (ide tcq) fix auto_poll detection oops - (ide tcq) enable use of NOP command to clear hardware tag queue on error. - (ide tcq) hwgroup->rq clearing race - (ide tcq) refuse to toggle tcq enable flag on busy drive. This will need to be fixed properly by serializing such requests with the normal request queue. I have tested error recovery, and it works. I've provoked errors at full queue depths, and the code correctly recovered and kept spinning without data loss. Generic tcq support: *.kernel.org/pub/linux/kernel/people/axboe/patches/v2.4/2.4.19-pre8/block-tag-2419p8-2.bz2 IDE tcq support: *.kernel.org/pub/linux/kernel/people/axboe/patches/v2.4/2.4.19-pre8/ide-tag-2419p8-2.bz2 All-in-one: *.kernel.org/pub/linux/kernel/people/axboe/patches/v2.4/2.4.19-pre8/ide-block-tag-2419p8.bz2 Enjoy, -- Jens Axboe