Merge tag 'for-linus-20181109' of git://git.kernel.dk/linux-block

Pull block layer fixes from Jens Axboe:

 - Two fixes for an ubd regression, one for missing locking, and one for
   a missing initialization of a field. The latter was an old latent
   bug, but it's now visible and triggers (Me, Anton Ivanov)

 - Set of NVMe fixes via Christoph, but applied manually due to a git
   tree mixup (Christoph, Sagi)

 - Fix for a discard split regression, in three patches (Ming)

 - Update libata git trees (Geert)

 - SPDX identifier for sata_rcar (Kuninori Morimoto)

 - Virtual boundary merge fix (Johannes)

 - Preemptively clear memory we are going to pass to userspace, in case
   the driver does a short read (Keith)

* tag 'for-linus-20181109' of git://git.kernel.dk/linux-block:
  block: make sure writesame bio is aligned with logical block size
  block: cleanup __blkdev_issue_discard()
  block: make sure discard bio is aligned with logical block size
  Revert "nvmet-rdma: use a private workqueue for delete"
  nvme: make sure ns head inherits underlying device limits
  nvmet: don't try to add ns to p2p map unless it actually uses it
  sata_rcar: convert to SPDX identifiers
  ubd: fix missing initialization of io_req
  block: Clear kernel memory before copying to user
  MAINTAINERS: Fix remaining pointers to obsolete libata.git
  ubd: fix missing lock around request issue
  block: respect virtual boundary mask in bvecs

5 files changed, 10 insertions, 22 deletions

diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 10ecb232245d..4b1ff5bc256a 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Renesas R-Car SATA driver
  *
  * Author: Vladimir Barinov <source@cogentembedded.com>
  * Copyright (C) 2013-2015 Cogent Embedded, Inc.
  * Copyright (C) 2013-2015 Renesas Solutions Corp.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 2e65be8b1387..559d567693b8 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1519,8 +1519,10 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 	if (ns->ndev)
 		nvme_nvm_update_nvm_info(ns);
 #ifdef CONFIG_NVME_MULTIPATH
-	if (ns->head->disk)
+	if (ns->head->disk) {
 		nvme_update_disk_info(ns->head->disk, ns, id);
+		blk_queue_stack_limits(ns->head->disk->queue, ns->queue);
+	}
 #endif
 }
 
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 5e3cc8c59a39..9901afd804ce 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -285,6 +285,7 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
 	/* set to a default value for 512 until disk is validated */
 	blk_queue_logical_block_size(q, 512);
+	blk_set_stacking_limits(&q->limits);
 
 	/* we need to propagate up the VMC settings */
 	if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index f4efe289dc7b..a5f9bbce863f 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -420,7 +420,7 @@ static void nvmet_p2pmem_ns_add_p2p(struct nvmet_ctrl *ctrl,
 	struct pci_dev *p2p_dev;
 	int ret;
 
-	if (!ctrl->p2p_client)
+	if (!ctrl->p2p_client || !ns->use_p2pmem)
 		return;
 
 	if (ns->p2p_dev) {
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index ddce100be57a..3f7971d3706d 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -122,7 +122,6 @@ struct nvmet_rdma_device {
 	int			inline_page_count;
 };
 
-static struct workqueue_struct *nvmet_rdma_delete_wq;
 static bool nvmet_rdma_use_srq;
 module_param_named(use_srq, nvmet_rdma_use_srq, bool, 0444);
 MODULE_PARM_DESC(use_srq, "Use shared receive queue.");
@@ -1274,12 +1273,12 @@ static int nvmet_rdma_queue_connect(struct rdma_cm_id *cm_id,
 
 	if (queue->host_qid == 0) {
 		/* Let inflight controller teardown complete */
-		flush_workqueue(nvmet_rdma_delete_wq);
+		flush_scheduled_work();
 	}
 
 	ret = nvmet_rdma_cm_accept(cm_id, queue, &event->param.conn);
 	if (ret) {
-		queue_work(nvmet_rdma_delete_wq, &queue->release_work);
+		schedule_work(&queue->release_work);
 		/* Destroying rdma_cm id is not needed here */
 		return 0;
 	}
@@ -1344,7 +1343,7 @@ static void __nvmet_rdma_queue_disconnect(struct nvmet_rdma_queue *queue)
 
 	if (disconnect) {
 		rdma_disconnect(queue->cm_id);
-		queue_work(nvmet_rdma_delete_wq, &queue->release_work);
+		schedule_work(&queue->release_work);
 	}
 }
 
@@ -1374,7 +1373,7 @@ static void nvmet_rdma_queue_connect_fail(struct rdma_cm_id *cm_id,
 	mutex_unlock(&nvmet_rdma_queue_mutex);
 
 	pr_err("failed to connect queue %d\n", queue->idx);
-	queue_work(nvmet_rdma_delete_wq, &queue->release_work);
+	schedule_work(&queue->release_work);
 }
 
 /**
@@ -1656,17 +1655,8 @@ static int __init nvmet_rdma_init(void)
 	if (ret)
 		goto err_ib_client;
 
-	nvmet_rdma_delete_wq = alloc_workqueue("nvmet-rdma-delete-wq",
-			WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0);
-	if (!nvmet_rdma_delete_wq) {
-		ret = -ENOMEM;
-		goto err_unreg_transport;
-	}
-
 	return 0;
 
-err_unreg_transport:
-	nvmet_unregister_transport(&nvmet_rdma_ops);
 err_ib_client:
 	ib_unregister_client(&nvmet_rdma_ib_client);
 	return ret;
@@ -1674,7 +1664,6 @@ err_ib_client:
 
 static void __exit nvmet_rdma_exit(void)
 {
-	destroy_workqueue(nvmet_rdma_delete_wq);
 	nvmet_unregister_transport(&nvmet_rdma_ops);
 	ib_unregister_client(&nvmet_rdma_ib_client);
 	WARN_ON_ONCE(!list_empty(&nvmet_rdma_queue_list));