Merge branch 'linus' into patchwork

* linus: (1465 commits)
  ARM: tegra30: clocks: Fix pciex clock registration
  lseek(fd, n, SEEK_END) does *not* go to eof - n
  Linux 3.10-rc6
  smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().
  powerpc: Fix missing/delayed calls to irq_work
  powerpc: Fix emulation of illegal instructions on PowerNV platform
  powerpc: Fix stack overflow crash in resume_kernel when ftracing
  snd_pcm_link(): fix a leak...
  use can_lookup() instead of direct checks of ->i_op->lookup
  move exit_task_namespaces() outside of exit_notify()
  fput: task_work_add() can fail if the caller has passed exit_task_work()
  xfs: don't shutdown log recovery on validation errors
  xfs: ensure btree root split sets blkno correctly
  xfs: fix implicit padding in directory and attr CRC formats
  xfs: don't emit v5 superblock warnings on write
  mei: me: clear interrupts on the resume path
  mei: nfc: fix nfc device freeing
  mei: init: Flush scheduled work before resetting the device
  sctp: fully initialize sctp_outq in sctp_outq_init
  netiucv: Hold rtnl between name allocation and device registration.
  ...

8 files changed, 40 insertions, 17 deletions

diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 81c7b73695d2..3b9afccaaade 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -61,7 +61,7 @@ int qib_alloc_lkey(struct qib_mregion *mr, int dma_region)
 	if (dma_region) {
 		struct qib_mregion *tmr;
 
-		tmr = rcu_dereference(dev->dma_mr);
+		tmr = rcu_access_pointer(dev->dma_mr);
 		if (!tmr) {
 			qib_get_mr(mr);
 			rcu_assign_pointer(dev->dma_mr, mr);
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index f19b0998a53c..2e84ef859c5b 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2004 Alex Aizman
  * Copyright (C) 2005 Mike Christie
  * Copyright (c) 2005, 2006 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2013 Mellanox Technologies. All rights reserved.
  * maintained by openib-general@openib.org
  *
  * This software is available to you under a choice of one of two
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 06f578cde75b..4f069c0d4c04 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -8,6 +8,7 @@
  *
  * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2013 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index a00ccd1ca333..b6d81a86c976 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2013 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index 68ebb7fe072a..7827baf455a1 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
+ * Copyright (c) 2013 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 5278916c3103..2c4941d0656b 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved.
  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2013 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -292,10 +293,10 @@ out_err:
 }
 
 /**
- * releases the FMR pool, QP and CMA ID objects, returns 0 on success,
+ * releases the FMR pool and QP objects, returns 0 on success,
  * -1 on failure
  */
-static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id)
+static int iser_free_ib_conn_res(struct iser_conn *ib_conn)
 {
 	int cq_index;
 	BUG_ON(ib_conn == NULL);
@@ -314,13 +315,9 @@ static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id)
 
 		rdma_destroy_qp(ib_conn->cma_id);
 	}
-	/* if cma handler context, the caller acts s.t the cma destroy the id */
-	if (ib_conn->cma_id != NULL && can_destroy_id)
-		rdma_destroy_id(ib_conn->cma_id);
 
 	ib_conn->fmr_pool = NULL;
 	ib_conn->qp	  = NULL;
-	ib_conn->cma_id   = NULL;
 	kfree(ib_conn->page_vec);
 
 	if (ib_conn->login_buf) {
@@ -415,11 +412,16 @@ static void iser_conn_release(struct iser_conn *ib_conn, int can_destroy_id)
 	list_del(&ib_conn->conn_list);
 	mutex_unlock(&ig.connlist_mutex);
 	iser_free_rx_descriptors(ib_conn);
-	iser_free_ib_conn_res(ib_conn, can_destroy_id);
+	iser_free_ib_conn_res(ib_conn);
 	ib_conn->device = NULL;
 	/* on EVENT_ADDR_ERROR there's no device yet for this conn */
 	if (device != NULL)
 		iser_device_try_release(device);
+	/* if cma handler context, the caller actually destroy the id */
+	if (ib_conn->cma_id != NULL && can_destroy_id) {
+		rdma_destroy_id(ib_conn->cma_id);
+		ib_conn->cma_id = NULL;
+	}
 	iscsi_destroy_endpoint(ib_conn->ep);
 }
 
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index b08ca7a9f76b..3f3f0416fbdd 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2227,6 +2227,27 @@ static void srpt_close_ch(struct srpt_rdma_ch *ch)
 }
 
 /**
+ * srpt_shutdown_session() - Whether or not a session may be shut down.
+ */
+static int srpt_shutdown_session(struct se_session *se_sess)
+{
+	struct srpt_rdma_ch *ch = se_sess->fabric_sess_ptr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ch->spinlock, flags);
+	if (ch->in_shutdown) {
+		spin_unlock_irqrestore(&ch->spinlock, flags);
+		return true;
+	}
+
+	ch->in_shutdown = true;
+	target_sess_cmd_list_set_waiting(se_sess);
+	spin_unlock_irqrestore(&ch->spinlock, flags);
+
+	return true;
+}
+
+/**
  * srpt_drain_channel() - Drain a channel by resetting the IB queue pair.
  * @cm_id: Pointer to the CM ID of the channel to be drained.
  *
@@ -2264,6 +2285,9 @@ static void srpt_drain_channel(struct ib_cm_id *cm_id)
 	spin_unlock_irq(&sdev->spinlock);
 
 	if (do_reset) {
+		if (ch->sess)
+			srpt_shutdown_session(ch->sess);
+
 		ret = srpt_ch_qp_err(ch);
 		if (ret < 0)
 			printk(KERN_ERR "Setting queue pair in error state"
@@ -2328,7 +2352,7 @@ static void srpt_release_channel_work(struct work_struct *w)
 	se_sess = ch->sess;
 	BUG_ON(!se_sess);
 
-	target_wait_for_sess_cmds(se_sess, 0);
+	target_wait_for_sess_cmds(se_sess);
 
 	transport_deregister_session_configfs(se_sess);
 	transport_deregister_session(se_sess);
@@ -3467,14 +3491,6 @@ static void srpt_release_cmd(struct se_cmd *se_cmd)
 }
 
 /**
- * srpt_shutdown_session() - Whether or not a session may be shut down.
- */
-static int srpt_shutdown_session(struct se_session *se_sess)
-{
-	return true;
-}
-
-/**
  * srpt_close_session() - Forcibly close a session.
  *
  * Callback function invoked by the TCM core to clean up sessions associated
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h
index 4caf55cda7b1..3dae156905de 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.h
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.h
@@ -325,6 +325,7 @@ struct srpt_rdma_ch {
 	u8			sess_name[36];
 	struct work_struct	release_work;
 	struct completion	*release_done;
+	bool			in_shutdown;
 };
 
 /**