| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 50/77] Target/iser: Bail from accept_np if np_thread is trying to close | Date | Sat, 28 Jun 2014 10:46:43 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Sagi Grimberg <sagig@mellanox.com>
commit e346ab343f4f58c12a96725c7b13df9cc2ad56f6 upstream.
In case np_thread state is in RESET/SHUTDOWN/EXIT states, no point for isert to stall there as we may get a hang in case no one will wake it up later.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/ulp/isert/ib_isert.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -2190,9 +2190,14 @@ accept_wait: return -ENODEV; spin_lock_bh(&np->np_thread_lock); - if (np->np_thread_state == ISCSI_NP_THREAD_RESET) { + if (np->np_thread_state >= ISCSI_NP_THREAD_RESET) { spin_unlock_bh(&np->np_thread_lock); - pr_debug("ISCSI_NP_THREAD_RESET for isert_accept_np\n"); + pr_debug("np_thread_state %d for isert_accept_np\n", + np->np_thread_state); + /** + * No point in stalling here when np_thread + * is in state RESET/SHUTDOWN/EXIT - bail + **/ return -ENODEV; } spin_unlock_bh(&np->np_thread_lock);
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