From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: LLDD: scatterlists only? Date: Sun, 14 Aug 2005 18:51:00 -0500 Message-ID: <1124063460.18802.27.camel@mulgrave> References: <20050814232446.58676.qmail@web51604.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from stat16.steeleye.com ([209.192.50.48]:61380 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S932359AbVHNXvO (ORCPT ); Sun, 14 Aug 2005 19:51:14 -0400 In-Reply-To: <20050814232446.58676.qmail@web51604.mail.yahoo.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: ltuikov@yahoo.com Cc: SCSI Mailing List On Sun, 2005-08-14 at 16:24 -0700, Luben Tuikov wrote: > Did someone have a patch or was there a talk > that SCSI Core is moving towards sending _only_ scatterlists > down to LLDDs? (effectively BUG_ON(!cmd->use_sg)) Yes, you can already see the beginnings in the -mm tree. Jens is maintaining a block tree with this in here: http://www.kernel.org/git/?p=linux/kernel/git/axboe/linux-2.6-block.git;a=shortlog;h=rq-map And I have a scsi-block-2.6 tree based off this here: http://www.kernel.org/git/?p=linux/kernel/git/jejb/scsi-block-2.6.git;a=summary The missing (and frankly really nasty) pieces are pulling all the sg handling out of sg and st, but fortunately Mike Christie is working on that. James