This is a note to let you know that I've just added the patch titled
Target/iser: Bail from accept_np if np_thread is trying to close
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
target-iser-bail-from-accept_np-if-np_thread-is-trying-to-close.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e346ab343f4f58c12a96725c7b13df9cc2ad56f6 Mon Sep 17 00:00:00 2001
From: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Date: Mon, 19 May 2014 17:44:22 +0300
Subject: Target/iser: Bail from accept_np if np_thread is trying to close
From: Sagi Grimberg <sagig@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -2725,9 +2725,14 @@ 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);
Patches currently in stable-queue which might be from sagig@xxxxxxxxxxxx are
queue-3.14/target-iser-fix-hangs-in-connection-teardown.patch
queue-3.14/target-iser-bail-from-accept_np-if-np_thread-is-trying-to-close.patch
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