+int nvme_ns_head_chr_async_cmd(struct io_uring_cmd *ioucmd)
+{
+ struct cdev *cdev = file_inode(ioucmd->file)->i_cdev;
+ struct nvme_ns_head *head = container_of(cdev, struct nvme_ns_head, cdev);
+ int srcu_idx = srcu_read_lock(&head->srcu);
+ struct nvme_ns *ns = nvme_find_path(head);
+ int ret = -EWOULDBLOCK;
+
+ if (ns)
+ ret = nvme_ns_async_ioctl(ns, ioucmd);
+ srcu_read_unlock(&head->srcu, srcu_idx);
+ return ret;
+}
No one cares that this has no multipathing capabilities what-so-ever?
despite being issued on the mpath device node?
I know we are not doing multipathing for userspace today, but this
feels like an alternative I/O interface for nvme, seems a bit cripled
with zero multipathing capabilities...
