The most important changes in this patch series are:
* ABORT and LUN RESET handling is made synchronous.
* LUN lookup during ABORT handling is moved from the tcm_qla2xxx
driver into the target core.
* A deadlock in the XCOPY implementation has been fixed.
* The SCSI target core is simplified significantly.
These patches have been tested against the iSCSI, ib_srpt and
tcm_qla2xxx target drivers.
Please review the patches that have not yet been reviewed,
Thanks,
Bart.
Changes between v4 and v5:
- Rebased this patch series on top of the for-next branch of
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git
(commit b2c9652eba6c).
- Left out the transport_lookup_tmr_lun() call from core_tmr_abort_task()
in patch "Make it possible to specify I_T nexus for SCSI abort".
- Left out the transport_cmd_check_stop() return value changes from patch
"Introduce a target driver reference count per command".
- Introduced a new patch "Make transport_wait_for_tasks() show what it is
waiting for".
- Improved handling of aborted TMFs in patch "Make ABORT and LUN RESET
handling synchronous".
- Folded patch "Simplify session shutdown tests" into patch "Simplify session
shutdown code".
- Restored the FABRIC_STOP tests in patch "Remove several state tests from the
TMF code".
Changes between v3 and v4:
- The TMF workqueue initialization code has been moved from
transport_alloc_session_tags() into transport_init_session() such that
this queue is created for all types of sessions.
- The transport_wait_for_tasks() documentation no longer duplicates
information that can be derived easily from the implementation of that
function.
- Explained how the newly added return statement can be triggered in the
description of patch "target: Stop execution if CMD_T_STOP has been set".
- Combined two patches into the new patch "target: Use the command
reference counting mechanism consistently".
- Added a new patch "target: Move session check from target_put_sess_cmd()
into target_release_cmd_kref()".
- Separated the target core refcnt from the target driver refcnt. See also
"target: Introduce a target driver reference count per command".
- Dropped a TMF check from the patch that makes TMF handling synchronous.
In the same patch a facility for showing the state of pending commands has
been added and a command reference leak has been fixed in target_execute_cmd()
(see also the transport_handle_abort() call added in that function).
- A new patch has been added: "target: Simplify session shutdown tests".
- transport_generic_free_cmd() has been modified such that it waits again
for aborted commands until all tasks have completed.
- A bug in the XCOPY deadlock fix has been fixed, namely that that code no
longer tries to increase the reference count of a device if that reference
count had dropped to zero.
Changes between v2 and v3:
- Avoid that transport_free_session() can trigger a NULL pointer dereference.
Changes between v1 and v2:
- Introduced a new workqueue per session for task management functions.
- Renamed tmr_wq into alua_wq.
Bart Van Assche (22):
target: Make it possible to specify I_T nexus for SCSI abort
tcm_qla2xxx: Let the target core look up the LUN of the aborted cmd
target: Introduce a target driver reference count per command
target: Use the command reference counting mechanism consistently
target: Make transport_wait_for_tasks() show what it is waiting for
target: Make ABORT and LUN RESET handling synchronous
target: Remove the SCF_SEND_DELAYED_TAS command flag
target: Inline transport_check_aborted_status()
target: Remove the write_pending_status() callback function
target: Simplify session shutdown code
target: Remove several state tests from the TMF code
target: Simplify LUN RESET implementation
target: Reduce number of __transport_wait_for_tasks() arguments
target: Remove command flag CMD_T_TAS
target: Remove unused arguments from __target_check_io_state()
target: Change return type of transport_wait_for_tasks() into void
target: Inline transport_put_cmd()
target: Inline transport_lun_remove_cmd()
target: Move target_remove_from_state_list() into
target_release_cmd_kref()
configfs: Introduce config_item_get_unless_zero()
target: Introduce target_get_device() and target_put_device()
target: Avoid that XCOPY commands trigger a deadlock
Documentation/target/tcm_mod_builder.py | 8 -
drivers/infiniband/ulp/srpt/ib_srpt.c | 12 +-
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 6 -
drivers/scsi/qla2xxx/qla_target.c | 66 ++-
drivers/scsi/qla2xxx/qla_target.h | 2 +-
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 38 +-
drivers/target/iscsi/iscsi_target.c | 7 +-
drivers/target/iscsi/iscsi_target_configfs.c | 13 -
drivers/target/iscsi/iscsi_target_erl1.c | 8 +-
drivers/target/loopback/tcm_loop.c | 6 -
drivers/target/sbp/sbp_target.c | 6 -
drivers/target/target_core_configfs.c | 4 -
drivers/target/target_core_device.c | 12 +
drivers/target/target_core_internal.h | 6 +-
drivers/target/target_core_tmr.c | 122 ++----
drivers/target/target_core_transport.c | 573 ++++++++++++---------------
drivers/target/target_core_xcopy.c | 49 ++-
drivers/target/tcm_fc/tcm_fc.h | 1 -
drivers/target/tcm_fc/tfc_cmd.c | 7 -
drivers/target/tcm_fc/tfc_conf.c | 1 -
drivers/usb/gadget/function/f_tcm.c | 9 -
drivers/vhost/scsi.c | 6 -
drivers/xen/xen-scsiback.c | 6 -
fs/configfs/item.c | 6 +
include/linux/configfs.h | 1 +
include/target/target_core_base.h | 10 +-
include/target/target_core_fabric.h | 4 +-
27 files changed, 378 insertions(+), 611 deletions(-)
--
2.11.0
--
To unsubscribe from this list: send the line "unsubscribe target-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
