From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH] Fix aic7xxx del_timer_sync() deadlock Date: Sun, 29 Feb 2004 15:20:58 -0500 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <404249AA.4050808@pobox.com> References: <403FFF86.90302@pobox.com> <20040228092512.GD923@suse.de> <4041292C.3090700@pobox.com> <20040229091350.GC3149@suse.de> <137982704.1078081053@aslan.btc.adaptec.com> <404236C1.5000001@pobox.com> <156412704.1078082931@aslan.btc.adaptec.com> <40423F7B.4020102@pobox.com> <162922704.1078083749@aslan.btc.adaptec.com> <4042410C.7070701@pobox.com> <20040229200636.GI31904@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:3538 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S262130AbUB2UVL (ORCPT ); Sun, 29 Feb 2004 15:21:11 -0500 In-Reply-To: <20040229200636.GI31904@suse.de> List-Id: linux-scsi@vger.kernel.org To: Jens Axboe Cc: "Justin T. Gibbs" , James Bottomley , SCSI Mailing List , Andrew Morton Jens Axboe wrote: > Don't forget that this isn't the only condition. What about pci dma > mapping failures? hehe, granted there might be other conditions, but for PCI DMA mapping specifically, it is (unfortunately) currently defined to not fail. That wants changing for ppc64 and x86-64 iommu, which are a -lot- more likely to fail an iommu transaction than parisc or sparc64... but that's the way it is for now. Way too many drivers assume PCI DMA mapping always succeeds. Jeff