static void nvme_ns_remove(struct nvme_ns *ns);
static int nvme_revalidate_disk(struct gendisk *disk);
+static void nvme_put_subsystem(struct nvme_subsystem *subsys);
static __le32 nvme_get_log_dw10(u8 lid, size_t size)
{
ida_simple_remove(&head->subsys->ns_ida, head->instance);
list_del_init(&head->entry);
cleanup_srcu_struct(&head->srcu);
+ nvme_put_subsystem(head->subsys);
kfree(head);
}
ret = PTR_ERR(meta);
goto out_unmap;
}
+ req->cmd_flags |= REQ_INTEGRITY;
}
}
}
if (ctrl->effects)
- effects = le32_to_cpu(ctrl->effects->iocs[opcode]);
+ effects = le32_to_cpu(ctrl->effects->acs[opcode]);
else
effects = nvme_known_admin_effects(opcode);
struct nvme_ns *ns, struct nvme_id_ns *id)
{
sector_t capacity = le64_to_cpup(&id->nsze) << (ns->lba_shift - 9);
+ unsigned short bs = 1 << ns->lba_shift;
unsigned stream_alignment = 0;
if (ns->ctrl->nr_streams && ns->sws && ns->sgs)
blk_mq_freeze_queue(disk->queue);
blk_integrity_unregister(disk);
- blk_queue_logical_block_size(disk->queue, 1 << ns->lba_shift);
+ blk_queue_logical_block_size(disk->queue, bs);
+ blk_queue_physical_block_size(disk->queue, bs);
+ blk_queue_io_min(disk->queue, bs);
+
if (ns->ms && !ns->ext &&
(ns->ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
nvme_init_integrity(disk, ns->ms, ns->pi_type);
if (ns->lba_shift == 0)
ns->lba_shift = 9;
ns->noiob = le16_to_cpu(id->noiob);
- ns->ext = ns->ms && (id->flbas & NVME_NS_FLBAS_META_EXT);
ns->ms = le16_to_cpu(id->lbaf[id->flbas & NVME_NS_FLBAS_LBA_MASK].ms);
+ ns->ext = ns->ms && (id->flbas & NVME_NS_FLBAS_META_EXT);
/* the PI implementation requires metadata equal t10 pi tuple size */
if (ns->ms == sizeof(struct t10_pi_tuple))
ns->pi_type = id->dps & NVME_NS_DPS_PI_MASK;
nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);
if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) {
- strncpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
+ strlcpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
return;
}
/* Generate a "fake" NQN per Figure 254 in NVMe 1.3 + ECN 001 */
off = snprintf(subsys->subnqn, NVMF_NQN_SIZE,
- "nqn.2014.08.org.nvmexpress:%4x%4x",
+ "nqn.2014.08.org.nvmexpress:%04x%04x",
le16_to_cpu(id->vid), le16_to_cpu(id->ssvid));
memcpy(subsys->subnqn + off, id->sn, sizeof(id->sn));
off += sizeof(id->sn);
NULL,
};
+static int nvme_active_ctrls(struct nvme_subsystem *subsys)
+{
+ int count = 0;
+ struct nvme_ctrl *ctrl;
+
+ mutex_lock(&subsys->lock);
+ list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {
+ if (ctrl->state != NVME_CTRL_DELETING &&
+ ctrl->state != NVME_CTRL_DEAD)
+ count++;
+ }
+ mutex_unlock(&subsys->lock);
+
+ return count;
+}
+
static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
{
struct nvme_subsystem *subsys, *found;
* Verify that the subsystem actually supports multiple
* controllers, else bail out.
*/
- if (!(id->cmic & (1 << 1))) {
+ if (nvme_active_ctrls(found) && !(id->cmic & (1 << 1))) {
dev_err(ctrl->device,
"ignoring ctrl due to duplicate subnqn (%s).\n",
found->subnqn);
serial_len, subsys->serial, model_len, subsys->model,
head->ns_id);
}
-static DEVICE_ATTR(wwid, S_IRUGO, wwid_show, NULL);
+static DEVICE_ATTR_RO(wwid);
static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
}
-static DEVICE_ATTR(nguid, S_IRUGO, nguid_show, NULL);
+static DEVICE_ATTR_RO(nguid);
static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
char *buf)
}
return sprintf(buf, "%pU\n", &ids->uuid);
}
-static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
+static DEVICE_ATTR_RO(uuid);
static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
}
-static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
+static DEVICE_ATTR_RO(eui);
static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
}
-static DEVICE_ATTR(nsid, S_IRUGO, nsid_show, NULL);
+static DEVICE_ATTR_RO(nsid);
static struct attribute *nvme_ns_id_attrs[] = {
&dev_attr_wwid.attr,
list_for_each_entry(h, &subsys->nsheads, entry) {
if (nvme_ns_ids_valid(&new->ids) &&
+ !list_empty(&h->list) &&
nvme_ns_ids_equal(&new->ids, &h->ids))
return -EINVAL;
}
goto out_cleanup_srcu;
list_add_tail(&head->entry, &ctrl->subsys->nsheads);
+
+ kref_get(&ctrl->subsys->ref);
+
return head;
out_cleanup_srcu:
cleanup_srcu_struct(&head->srcu);
if (nvme_init_ns_head(ns, nsid, id, &new))
goto out_free_id;
nvme_setup_streams_ns(ctrl, ns);
-
-#ifdef CONFIG_NVME_MULTIPATH
- /*
- * If multipathing is enabled we need to always use the subsystem
- * instance number for numbering our devices to avoid conflicts
- * between subsystems that have multiple controllers and thus use
- * the multipath-aware subsystem node and those that have a single
- * controller and use the controller node directly.
- */
- if (ns->head->disk) {
- sprintf(disk_name, "nvme%dc%dn%d", ctrl->subsys->instance,
- ctrl->cntlid, ns->head->instance);
- flags = GENHD_FL_HIDDEN;
- } else {
- sprintf(disk_name, "nvme%dn%d", ctrl->subsys->instance,
- ns->head->instance);
- }
-#else
- /*
- * But without the multipath code enabled, multiple controller per
- * subsystems are visible as devices and thus we cannot use the
- * subsystem instance.
- */
- sprintf(disk_name, "nvme%dn%d", ctrl->instance, ns->head->instance);
-#endif
+ nvme_set_disk_name(disk_name, ns, ctrl, &flags);
if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
if (nvme_nvm_register(ns, disk_name, node)) {
if (new)
nvme_mpath_add_disk(ns->head);
- nvme_mpath_add_disk_links(ns);
return;
out_unlink_ns:
mutex_lock(&ctrl->subsys->lock);
return;
if (ns->disk && ns->disk->flags & GENHD_FL_UP) {
- nvme_mpath_remove_disk_links(ns);
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvme_ns_id_attr_group);
if (ns->ndev)
mutex_unlock(&ns->ctrl->namespaces_mutex);
synchronize_srcu(&ns->head->srcu);
+ nvme_mpath_check_last_path(ns);
nvme_put_ns(ns);
}
projects / mirror_ubuntu-bionic-kernel.git / blobdiff