[0/7] iscsi fixes/cleanups

Message

Mike Christie Jan. 18, 2021, 8:34 p.m. UTC

These patches were made over Martin's 5.12 branches because they are
mostly fixes, but there's also one cleanup that one of the fixes is
built on top, so it's probably more appropriate for 5.12 since its
later in the cycle.


V4:
- Add patch:
[PATCH 4/7] libiscsi: fix iscsi host workq destruction
to fix an issue where the user might only call iscsi_host_alloc then
iscsi_host_free and that was leaving the iscsi workqueue running.
- Add check for if a driver were to set can_queue to ISCSI_MGMT_CMDS_MAX
or less.
V3:
- Add some patches for issues found while testing.
	- session queue depth was stuck at 128
	- cmd window could not be detected when session was relogged in.
- Patch "libiscsi: drop taskqueuelock" had a bug where we did not
disable bhs and during xmit thread suspension leaked the current task.
V2:
- Take back_lock when looping over running cmds in iscsi_eh_cmd_timed_out
in case those complete while we are accessing them.