Merge branch 'nvme-5.1' of git://git.infradead.org/nvme into for-5.1/…

…block

Pull NVMe changes for 5.1 from Christoph

* 'nvme-5.1' of git://git.infradead.org/nvme: (22 commits)
  nvme-rdma: use nr_phys_segments when map rq to sgl
  nvmet: convert to SPDX identifiers
  nvmet-rdma: convert to SPDX identifiers
  nvme-loop: convert to SPDX identifiers
  nvmet-fcloop: convert to SPDX identifiers
  nvmet-fc: convert to SPDX identifiers
  nvme: convert to SPDX identifiers
  nvme-pci: convert to SPDX identifiers
  nvme-lightnvm: convert to SPDX identifiers
  nvme-rdma: convert to SPDX identifiers
  nvme-fc: convert to SPDX identifiers
  nvme-fabrics: convert to SPDX identifiers
  nvme-tcp.h: fix SPDX header
  nvme_ioctl.h: remove duplicate GPL boilerplate
  nvme: return error from nvme_alloc_ns()
  nvme: avoid that deleting a controller triggers a circular locking complaint
  nvme: introduce a helper function for controller deletion
  nvme: unexport nvme_delete_ctrl_sync()
  nvme-pci: check kstrtoint() return value in queue_count_set()
  nvme-fabrics: document the poll function argument
  ...

drivers/nvme/host/core.c

@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * NVM Express device driver
  * Copyright (c) 2011-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 
 #include <linux/blkdev.h>
@@ -151,11 +143,8 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
 }
 EXPORT_SYMBOL_GPL(nvme_reset_ctrl_sync);
 
-static void nvme_delete_ctrl_work(struct work_struct *work)
+static void nvme_do_delete_ctrl(struct nvme_ctrl *ctrl)
 {
-	struct nvme_ctrl *ctrl =
-		container_of(work, struct nvme_ctrl, delete_work);
-
 	dev_info(ctrl->device,
 		 "Removing ctrl: NQN \"%s\"\n", ctrl->opts->subsysnqn);
 
@@ -167,6 +156,14 @@ static void nvme_delete_ctrl_work(struct work_struct *work)
 	nvme_put_ctrl(ctrl);
 }
 
+static void nvme_delete_ctrl_work(struct work_struct *work)
+{
+	struct nvme_ctrl *ctrl =
+		container_of(work, struct nvme_ctrl, delete_work);
+
+	nvme_do_delete_ctrl(ctrl);
+}
+
 int nvme_delete_ctrl(struct nvme_ctrl *ctrl)
 {
 	if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING))
@@ -177,7 +174,7 @@ int nvme_delete_ctrl(struct nvme_ctrl *ctrl)
 }
 EXPORT_SYMBOL_GPL(nvme_delete_ctrl);
 
-int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)
+static int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)
 {
 	int ret = 0;
 
@@ -186,13 +183,13 @@ int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)
 	 * can free the controller.
 	 */
 	nvme_get_ctrl(ctrl);
-	ret = nvme_delete_ctrl(ctrl);
+	if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING))
+		ret = -EBUSY;
 	if (!ret)
-		flush_work(&ctrl->delete_work);
+		nvme_do_delete_ctrl(ctrl);
 	nvme_put_ctrl(ctrl);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(nvme_delete_ctrl_sync);
 
 static inline bool nvme_ns_has_pi(struct nvme_ns *ns)
 {
@@ -2328,6 +2325,9 @@ static struct attribute *nvme_subsys_attrs[] = {
 	&subsys_attr_serial.attr,
 	&subsys_attr_firmware_rev.attr,
 	&subsys_attr_subsysnqn.attr,
+#ifdef CONFIG_NVME_MULTIPATH
+	&subsys_attr_iopolicy.attr,
+#endif
 	NULL,
 };
 
@@ -2380,6 +2380,9 @@ static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
 	memcpy(subsys->firmware_rev, id->fr, sizeof(subsys->firmware_rev));
 	subsys->vendor_id = le16_to_cpu(id->vid);
 	subsys->cmic = id->cmic;
+#ifdef CONFIG_NVME_MULTIPATH
+	subsys->iopolicy = NVME_IOPOLICY_NUMA;
+#endif
 
 	subsys->dev.class = nvme_subsys_class;
 	subsys->dev.release = nvme_release_subsystem;
@@ -3211,21 +3214,23 @@ static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns)
 	return 0;
 }
 
-static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
+static int nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 {
 	struct nvme_ns *ns;
 	struct gendisk *disk;
 	struct nvme_id_ns *id;
 	char disk_name[DISK_NAME_LEN];
-	int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT;
+	int node = ctrl->numa_node, flags = GENHD_FL_EXT_DEVT, ret;
 
 	ns = kzalloc_node(sizeof(*ns), GFP_KERNEL, node);
 	if (!ns)
-		return;
+		return -ENOMEM;
 
 	ns->queue = blk_mq_init_queue(ctrl->tagset);
-	if (IS_ERR(ns->queue))
+	if (IS_ERR(ns->queue)) {
+		ret = PTR_ERR(ns->queue);
 		goto out_free_ns;
+	}
 
 	blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue);
 	if (ctrl->ops->flags & NVME_F_PCI_P2PDMA)
@@ -3241,20 +3246,27 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	nvme_set_queue_limits(ctrl, ns->queue);
 
 	id = nvme_identify_ns(ctrl, nsid);
-	if (!id)
+	if (!id) {
+		ret = -EIO;
 		goto out_free_queue;
+	}
 
-	if (id->ncap == 0)
+	if (id->ncap == 0) {
+		ret = -EINVAL;
 		goto out_free_id;
+	}
 
-	if (nvme_init_ns_head(ns, nsid, id))
+	ret = nvme_init_ns_head(ns, nsid, id);
+	if (ret)
 		goto out_free_id;
 	nvme_setup_streams_ns(ctrl, ns);
 	nvme_set_disk_name(disk_name, ns, ctrl, &flags);
 
 	disk = alloc_disk_node(0, node);
-	if (!disk)
+	if (!disk) {
+		ret = -ENOMEM;
 		goto out_unlink_ns;
+	}
 
 	disk->fops = &nvme_fops;
 	disk->private_data = ns;
@@ -3266,7 +3278,8 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	__nvme_revalidate_disk(disk, id);
 
 	if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
-		if (nvme_nvm_register(ns, disk_name, node)) {
+		ret = nvme_nvm_register(ns, disk_name, node);
+		if (ret) {
 			dev_warn(ctrl->device, "LightNVM init failure\n");
 			goto out_put_disk;
 		}
@@ -3284,7 +3297,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	nvme_fault_inject_init(ns);
 	kfree(id);
 
-	return;
+	return 0;
  out_put_disk:
 	put_disk(ns->disk);
  out_unlink_ns:
@@ -3297,6 +3310,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 	blk_cleanup_queue(ns->queue);
  out_free_ns:
 	kfree(ns);
+	return ret;
 }
 
 static void nvme_ns_remove(struct nvme_ns *ns)

drivers/nvme/host/fabrics.c

@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * NVMe over Fabrics common host code.
  * Copyright (c) 2015-2016 HGST, a Western Digital Company.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/init.h>
@@ -430,6 +422,7 @@ EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue);
  * @qid:	NVMe I/O queue number for the new I/O connection between
  *		host and target (note qid == 0 is illegal as this is
  *		the Admin queue, per NVMe standard).
+ * @poll:	Whether or not to poll for the completion of the connect cmd.
  *
  * This function issues a fabrics-protocol connection
  * of a NVMe I/O queue (via NVMe Fabrics "Connect" command)

drivers/nvme/host/fabrics.h

@@ -1,15 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * NVMe over Fabrics common host code.
  * Copyright (c) 2015-2016 HGST, a Western Digital Company.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 #ifndef _NVME_FABRICS_H
 #define _NVME_FABRICS_H 1

drivers/nvme/host/fault_inject.c

@@ -1,8 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * fault injection support for nvme.
  *
  * Copyright (c) 2018, Oracle and/or its affiliates
- *
  */
 
 #include <linux/moduleparam.h>

drivers/nvme/host/fc.c

@@ -1,18 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2016 Avago Technologies.  All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful.
- * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO
- * THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID.
- * See the GNU General Public License for more details, a copy of which
- * can be found in the file COPYING included with this package
- *
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <linux/module.h>

drivers/nvme/host/lightnvm.c

@@ -1,23 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * nvme-lightnvm.c - LightNVM NVMe device
  *
  * Copyright (C) 2014-2015 IT University of Copenhagen
  * Initial release: Matias Bjorling <[email protected]>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
  */
 
 #include "nvme.h"