From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH 11/12] sata_mv Introduce per-tag SG tables Date: Fri, 25 Jan 2008 23:26:21 -0500 Message-ID: <479AB66D.5020106@pobox.com> References: <4798FB68.70400@rtr.ca> <4798FD03.8070206@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:57353 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752730AbYAZE0X (ORCPT ); Fri, 25 Jan 2008 23:26:23 -0500 In-Reply-To: <4798FD03.8070206@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: IDE/ATA development list Mark Lord wrote: > sata_mv Introduce per-tag SG tables. > > In preparation for supporting NCQ, we must allocate separate SG tables > for each command tag, rather than just a single table per port as before. > > Gen-I hardware cannot do NCQ, though, so we still allocate just a single > table for that, but populate it in all 32 slots to avoid special-cases > elsewhere in hotter paths of the code. > > Signed-off-by: Mark Lord ACK (though it obviously must be revised per comments on patch #10)