From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: [PATCH] make the SCSI mid-layer obey the device online flag Date: 06 Jun 2003 12:04:52 -0400 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1054915493.1778.36.camel@mulgrave> References: <1054742495.1674.18.camel@mulgrave> <20030604165146.GA1426@beaverton.ibm.com > <1054754103.2360.8.camel@mulgrave> <20030606073603.A13259@infradead.org> <3EE0B316.4060207@rogers.com> <1054913984.1778.31.camel@mulgrave> <3EE0B8D8.4020909@rogers.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from nat9.steeleye.com ([65.114.3.137]:64005 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S261939AbTFFPwR (ORCPT ); Fri, 6 Jun 2003 11:52:17 -0400 In-Reply-To: <3EE0B8D8.4020909@rogers.com> List-Id: linux-scsi@vger.kernel.org To: Luben Tuikov Cc: Christoph Hellwig , Mike Anderson , SCSI Mailing List , Alan Stern On Fri, 2003-06-06 at 11:52, Luben Tuikov wrote: > So SCSI Core _has_ decided to know about ULP (block, tape, optical). > > Unless we (SCSI Core) generate those, it's a pickle to decide > which are ``special'' enough commands. I think that we'll see > more user space drivers controlling devices via sg sending > commands to the device for exactly those kinds of problems... > Else the burden on SCSI Core will/might be too great. By "special" I mean requests marked REQ_SPECIAL. These are generated either internally or via SCSI_IOCTL_SEND_COMMAND. James