linux-kernel - [PATCH 0/5] tcm: Unify subsystem plugin control CDB emulation

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Date:	Wed, 13 Oct 2010 01:47:43 -0700
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@....de>
Cc:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Mike Christie <michaelc@...wisc.edu>,
	Hannes Reinecke <hare@...e.de>,
	James Bottomley <James.Bottomley@...e.de>,
	Boaz Harrosh <bharrosh@...asas.com>,
	Jens Axboe <axboe@...nel.dk>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Douglas Gilbert <dgilbert@...erlog.com>,
	Richard Sharpe <realrichardsharpe@...il.com>,
	Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [PATCH 0/5] tcm: Unify subsystem plugin control CDB emulation

From: Nicholas Bellinger <nab@...ux-iscsi.org>

Greetings folks,

This patch series pushes the remaining SPC-3 control path CDB emualation for
INQUIRY, READ_CAPACITY_*, UNMAP and WRITE_SAME w/ UNMAP=1, and SYNCHRONIZE_CACHE_*
subsystem plugin handling into generic TCM code.

It follows Christoph's recommendation to pick off the non SCF_SCSI_DATA_SG_IO_CDB
struct se_tasks before hitting struct se_subsysem_api->do_task(), and removal of
struct se_subsystem_api_cdb initially added in commit 3712c6da407.

So far this has been tested with TCM/IBLOCK and TCM/FILEIO subsystem plugins on
v2.6.36-rc7 x86 HVM with sg_inquiry, sg_readcap, sg_unmap, sg_write_same -[ST] -U,
and sg_sync.

Thanks again go out to hch for pushing for IBLOCK and FILEIO to become drivers/scsi
independent and save yet another ~80 LOC from the v4.0 tree!  Thanks Christoph!!!

Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>

Nicholas Bellinger (5):
  tcm: Move transport_emulate_control_cdb() into
    __transport_execute_tasks()
  tcm: Unify INQUIRY subsystem plugin handling
  tcm: Unify READ_CAPACITY_* subsystem plugin handling
  tcm: Unify UNMAP and WRITE_SAME w/ UNMAP=1 subsystem plugin handling
  tcm: Unify SYNCHRONIZE_CACHE_* subsystem plugin handling

 drivers/target/target_core_file.c      |  101 +++++++++++------------------
 drivers/target/target_core_iblock.c    |  113 ++++++++++++--------------------
 drivers/target/target_core_rd.c        |   89 ++++++++-----------------
 drivers/target/target_core_transport.c |  111 ++++++++++++++++---------------
 include/target/target_core_transport.h |   48 ++++++++------
 5 files changed, 193 insertions(+), 269 deletions(-)

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