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In situations such as bond failover, The new session establishment implicitly invokes the termination of the old connection. So, we don't want to wait for the old connection wait_conn to completely terminate before we accept the new connection and post a login response. The solution is to deffer the comp_wait completion and the conn_put to a work so wait_conn will effectively be non-blocking (flush errors are assumed to come very fast). We allocate isert_release_wq with WQ_UNBOUND and WQ_UNBOUND_MAX_ACTIVE to spread the concurrency of release works. Reported-by: Slava Shwartsman <valyushash@gmail.com> Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Cc: <stable@vger.kernel.org> # v3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> |
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