From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753820AbaJAXHP (ORCPT ); Wed, 1 Oct 2014 19:07:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:31802 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752984AbaJAXHN (ORCPT ); Wed, 1 Oct 2014 19:07:13 -0400 From: Andy Grover To: target-devel@vger.kernel.org Cc: linux-scsi@vger.kernel.org, hch@lst.de, nab@linux-iscsi.org, shli@kernel.org, linux-kernel@vger.kernel.org, rjones@redhat.com Subject: [PATCHv2 0/4] Userspace Passthrough backstore for LIO Date: Wed, 1 Oct 2014 16:07:01 -0700 Message-Id: <1412204825-13292-1-git-send-email-agrover@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Nick and all, Here's version 2, against Nick's target-pending/for-next. Note that since that tree is still on 3.17-rc5, in testing I ran into an issue fixed by: genhd: fix leftover might_sleep() in blk_free_devt() which first appears in 3.17-rc7. Incorporates feedback from Nick. Doc fixes * add table of contents * add example code for the user-side * document specific opcodes that IO mode passes through Code fixes * add back support for PASS_ALL and PASS_IO pass_level option. * Removed retry-in-kernel mechanism * fix issues from kbuild test robot * remove kref from tcmu_dev and call kfree(udev) from tcmu_free_device instead * set hw_block_size to 512 instead of 4096 * Don't copy DMA_FROM_DEVICE data if there was a CHECK_CONDITION * use goto-style error handling in tcmu_configure_device * Check retval from genlmsg_multicast and ignore -ESRCH * properly handle if device is unconfigured in tcmu_free_device Thanks -- Andy Andy Grover (4): target: Remove unneeded check in sbc_parse_cdb uio: Export definition of struct uio_device target: Add documentation on the target userspace pass-through driver target: Add a user-passthrough backstore Documentation/target/tcmu-design.txt | 378 +++++++++++ drivers/target/Kconfig | 5 + drivers/target/Makefile | 1 + drivers/target/target_core_sbc.c | 2 +- drivers/target/target_core_transport.c | 4 + drivers/target/target_core_user.c | 1163 ++++++++++++++++++++++++++++++++ drivers/uio/uio.c | 12 - include/linux/uio_driver.h | 12 +- include/uapi/linux/Kbuild | 1 + include/uapi/linux/target_core_user.h | 142 ++++ 10 files changed, 1706 insertions(+), 14 deletions(-) create mode 100644 Documentation/target/tcmu-design.txt create mode 100644 drivers/target/target_core_user.c create mode 100644 include/uapi/linux/target_core_user.h -- 1.9.3