linux.git/include/target, branch v3.13-rc2

target_core_alua: Store supported ALUA states

2013-11-20T19:26:37+00:00

The supported ALUA states might be different for individual
devices, so store it in a separate field.

(nab: Remove unnecessary line continuation)

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target core: rename (ex,im)plict -> (ex,im)plicit

2013-11-20T19:24:40+00:00

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target: Convert se_device statistics to atomic_long_t

2013-11-14T02:34:55+00:00

This patch converts the handful of se_device statistics to type
atomic_long_t, instead of using se_device->stats_lock when
incrementing these values.

More importantly, go ahead and drop the spinlock usage within
transport_lookup_cmd_lun() fast-path code.

Signed-off-by: Nicholas Bellinger

target: Pass through I/O topology for block backstores

2013-11-12T21:44:54+00:00

In addition to block size (already implemented), passing through
alignment offset, logical-to-phys block exponent, I/O granularity and
optimal I/O length will allow initiators to properly handle layout on
LUNs with 4K block sizes.

Tested with various weird values via scsi_debug module.

One thing to look at with this patch is the new block limits values --
instead of granularity 1 optimal 8192, Lio will now be returning whatever
the block device says, which may affect performance.

Signed-off-by: Andy Grover 
Acked-by: Martin K. Petersen 
Signed-off-by: Nicholas Bellinger

target: Add per device xcopy_lun for copy offload I/O

2013-11-08T21:13:38+00:00

This patch adds a se_device->xcopy_lun that is used for local
copy offload I/O, instead of allocating + initializing a pseudo
se_lun for each received EXTENDED_COPY operation.

Also, move declaration of struct se_lun + struct se_port_stat_grps
ahead of struct se_device.

Signed-off-by: Nicholas Bellinger

target: Drop left-over se_lun->lun_cmd_list shutdown code

2013-11-07T22:25:02+00:00

Now with percpu refcounting for se_lun in place, go ahead and drop
the legacy per se_cmd accounting for se_lun shutdown.

This includes __transport_clear_lun_from_sessions(), the associated
transport_lun_wait_for_tasks() logic, along with a handful of now
unused se_cmd structure members and ->transport_state bits.

Cc: Kent Overstreet 
Signed-off-by: Nicholas Bellinger

target: Add percpu refcounting for se_lun access

2013-11-07T22:24:52+00:00

This patch adds percpu refcounting for se_lun access that allows the
association of an se_lun + se_cmd in transport_lookup_cmd_lun() to
occur without an extra list_head for tracking outstanding I/O during
se_lun shutdown.

This effectively changes se_lun shutdown logic to wait for outstanding
I/O percpu references to complete in transport_lun_remove_cmd() using
se_lun->lun_ref_comp, instead of explicitly draining the per se_lun
command list and waiting for individual se_cmd descriptor processing
to complete.

Cc: Kent Overstreet 
Signed-off-by: Nicholas Bellinger

target: Export symbol core_tpg_check_initiator_node_acl

2013-10-24T04:30:07+00:00

Export symbol core_tpg_check_initiator_node_acl and move prototype from the
private drivers/target/target_core_internal.h to the public
include/target/target_core_fabric.h

Signed-off-by: Thomas Glanzmann 
Signed-off-by: Nicholas Bellinger

tcm_loop: separate out tcm_loop_issue_tmr

2013-10-16T22:41:49+00:00

No functional change.

Signed-off-by: Hannes Reinecke 
Signed-off-by: Nicholas Bellinger

target: Remove TF_CIT_TMPL macro

2013-10-16T20:35:02+00:00

Remove a lingering macro that just hid a dereference.

Reviewed-by: Christoph Hellwig 
Signed-off-by: Andy Grover 
Signed-off-by: Nicholas Bellinger