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This patch converts iscsi-target code to use modern kthread.h API callers for creating RX/TX threads for each new iscsi_conn descriptor, and releasing associated RX/TX threads during connection shutdown. This is done using iscsit_start_kthreads() -> kthread_run() to start new kthreads from within iscsi_post_login_handler(), and invoking kthread_stop() from existing iscsit_close_connection() code. Also, convert iscsit_logout_post_handler_closesession() code to use cmpxchg when determing when iscsit_cause_connection_reinstatement() needs to sleep waiting for completion. Reported-by: Sagi Grimberg <sagig@mellanox.com> Tested-by: Sagi Grimberg <sagig@mellanox.com> Cc: Slava Shwartsman <valyushash@gmail.com> Cc: <stable@vger.kernel.org> # v3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>