scsi: sched/wait: Add wait_event_lock_irq_timeout for TASK_UNINTERRUPTIBLE usage

Short of reverting commit 00d909a10710 ("scsi: target: Make the session
shutdown code also wait for commands that are being aborted") for v4.19,
target-core needs a wait_event_t macro can be executed using
TASK_UNINTERRUPTIBLE to function correctly with existing fabric drivers that
expect to run with signals pending during session shutdown and active se_cmd
I/O quiesce.

The most notable is iscsi-target/iser-target, while ibmvscsi_tgt invokes
session shutdown logic from userspace via configfs attribute that could also
potentially have signals pending.

So go ahead and introduce wait_event_lock_irq_timeout() to achieve this, and
update + rename __wait_event_lock_irq_timeout() to make it accept 'state' as a
parameter.

Fixes: 00d909a10710 ("scsi: target: Make the session shutdown code also wait for commands that are being aborted")
Cc: <[email protected]> # v4.19+
Cc: Bart Van Assche <[email protected]>
Cc: Mike Christie <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Sagi Grimberg <[email protected]>
Cc: Bryant G. Ly <[email protected]>
Cc: Peter Zijlstra (Intel) <[email protected]>
Tested-by: Nicholas Bellinger <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
Reviewed-by: Bryant G. Ly <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

0 files changed, 0 insertions, 0 deletions