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Target/iser: Bail from accept_np if np_thread is trying to close

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commit e346ab343f 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>
This commit is contained in:
Sagi Grimberg
2014-05-19 17:44:22 +03:00
committed by Greg Kroah-Hartman
parent 8d26d1a24b
commit 3ddb875488
1 changed files with 7 additions and 2 deletions
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9
drivers/infiniband/ulp/isert/ib_isert.c
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@@ -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);