tree 3253af4701f701b736e5b784bc4eb91d8ee5127f
parent 75f141aaf48e13812b4fee914a66f6fce28b543f
author Bart Van Assche <bart.vanassche@sandisk.com> 1495583322 -0700
committer Nicholas Bellinger <nab@linux-iscsi.org> 1499407885 -0700

target/tcm_loop: Make TMF processing slightly faster

Target drivers must guarantee that struct se_cmd and struct se_tmr_req
exist as long as target_tmr_work() is in progress. This is why the
tcm_loop driver today passes 1 as second argument to
transport_generic_free_cmd() from inside the TMF code. Instead of
making the TMF code wait, make the TMF code obtain two references
(SCF_ACK_KREF) and drop one reference from inside the .check_stop_free()
callback.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>