From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754960AbaIVVDM (ORCPT ); Mon, 22 Sep 2014 17:03:12 -0400 Received: from mail.linux-iscsi.org ([67.23.28.174]:50244 "EHLO linux-iscsi.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752887AbaIVVDK (ORCPT ); Mon, 22 Sep 2014 17:03:10 -0400 Message-ID: <1411419788.24986.37.camel@haakon3.risingtidesystems.com> Subject: Re: [PATCH 4/4] target: Add a user-passthrough backstore From: "Nicholas A. Bellinger" To: Andy Grover Cc: Alex Elsayed , target-devel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 22 Sep 2014 14:03:08 -0700 In-Reply-To: <54208E03.8030906@redhat.com> References: <1410822750-10717-1-git-send-email-agrover@redhat.com> <1410822750-10717-5-git-send-email-agrover@redhat.com> <1411161279.23258.26.camel@haakon3.risingtidesystems.com> <1411169965.23258.45.camel@haakon3.risingtidesystems.com> <541CCBD1.8050606@redhat.com> <1411419532.24986.36.camel@haakon3.risingtidesystems.com> <54208E03.8030906@redhat.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.4-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2014-09-22 at 14:00 -0700, Andy Grover wrote: > On 09/22/2014 01:58 PM, Nicholas A. Bellinger wrote: > > So I'd still like to start for an initial merge with the two different > > modes mentioned earlier. The pure-passthrough mode where everything is > > handled by user-space, and an I/O passthrough mode where only > > SCF_SCSI_DATA_CDB is passed along to userspace, but all other control > > CDBs are handled by existing in-kernel emulation. > > > > Andy, can you re-spin a series with these two approaches in mind..? > > Will do. This is actually close to what the initial RFC version I posted > did. > Also, it would be nice to include the example user-space code that proves the logic into the patch series, so it can be carried along with kernel sources. --nab