linux/drivers/target/loopback, branch v3.4.9

loopback: Fix transport_generic_allocate_tasks error handling

2012-03-18T01:07:27Z

This patch addresses a tcm_loop bug with transport_generic_allocate_tasks() return checking in tcm_loop_submission_work() where other non zero return codes (including -EBUSY for reservation conflicts) are incorrectly falling through to transport_generic_map_mem_to_cmd() -> transport_handle_cdb_direct(). This bug was introduced into target-pending/for-next-merge with the following for-3.4 commit: commit 16786454acec0e0e55e32d508b3058b32c1f23f3 Author: Christoph Hellwig Date: Thu Feb 2 17:04:42 2012 -0500 tcm_loop: switch to using transport_handle_cdb_direct Cc: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: remove obvious warnings

2012-03-16T02:16:09Z

Get rid of a bunch of write-only variables. In a number of cases I suspect actual bugs to be present, so I left all of those for a second look. (nab: fix lio-core patch fuzz) Signed-off-by: Joern Engel Signed-off-by: Nicholas Bellinger

target: Bump core version to v4.1.0-rc2-ml + fabric versions

2012-03-10T22:55:17Z

Bump core version to v4.1.0-rc2-ml, and for versions from the following mainline fabric modules: loopback: v2.1-rc2 tcm_fc: v0.4 iscsi-target: v4.1.0-rc2 Signed-off-by: Nicholas Bellinger

target: Drop unused legacy target_core_fabric_ops API callers

2012-03-10T22:42:55Z

This patch drops the following unused legacy API callers from target_core_fabric.h: *) TFO->fall_back_to_erl0() *) TFO->stop_session() *) TFO->sess_logged_in() *) TFO->is_state_remove() This patch also removes the stub usage in loopback, tcm_fc, iscsi_target, and ib_srpt fabric modules. Signed-off-by: Nicholas Bellinger

tcm_loop: Set residual field for SCSI commands

2012-02-25T22:37:50Z

If the target core signals an over- or under-run, tcm_loop should call scsi_set_resid() to tell the SCSI midlayer about the residual data length. The difference can be seen by doing something like strace -eioctl sg_raw -r 1024 /dev/sda 8 0 0 0 1 0 > /dev/null and looking at the "resid=" part of the SG_IO ioctl -- after this patch, the field is correctly reported as 512. Signed-off-by: Roland Dreier Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger

tcm_loop: switch to using transport_handle_cdb_direct

2012-02-25T22:37:48Z

Now that we use a workqueue for I/O submission there is no need to use transport_generic_handle_cdb_map any more. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

tcm_loop: defer all command submissions to workqueue

2012-02-25T22:37:48Z

Apply the qla2xxx model of submitting all commands from a workqueue. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

tcm_loop: kill tcm_loop_allocate_core_cmd

2012-02-25T22:37:48Z

This function makes little sense as a separate abstraction as it's deeply interwinded with the control flow of its only caller. Merged it into tcm_loop_queuecommand after factoring out a helper to convert the task attribute representation. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger

target: Add SCF_SCSI_TMR_CDB usage and drop se_tmr_req_cache

2012-02-25T22:37:47Z

Change the test for if a cmd is a tmr request to checking if SCF_SCSI_TMR_CDB (a new flag) is set in cmd->se_cmd_flags. Also remove se_tmr_req_cache usage in favor of kzalloc usage, and make core_tmr_alloc_req() return int + setup se_cmd->se_tmr_req directly and fix up various fabric module usages Cc: Andy Grover Signed-off-by: Nicholas Bellinger

tcm_loop: bump max_sectors

2011-12-14T11:28:11Z

There is not reason to artifically limit max_sectors in tcm_loop, set it to UINT_MAX to allow stressing the large I/O handling in the target core using the loopback driver. Also remove various superflous defines hiding the values set in the host template. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger