+ nsblk = kzalloc(sizeof(*nsblk), GFP_KERNEL);
+ if (!nsblk)
+ return ERR_PTR(-ENOMEM);
+ dev = &nsblk->common.dev;
+ dev->type = &namespace_blk_device_type;
+ dev->parent = &nd_region->dev;
+ nsblk->id = -1;
+ nsblk->lbasize = __le64_to_cpu(nd_label->lbasize);
+ nsblk->uuid = kmemdup(nd_label->uuid, NSLABEL_UUID_LEN,
+ GFP_KERNEL);
+ if (!nsblk->uuid)
+ goto blk_err;
+ memcpy(name, nd_label->name, NSLABEL_NAME_LEN);
+ if (name[0])
+ nsblk->alt_name = kmemdup(name, NSLABEL_NAME_LEN,
+ GFP_KERNEL);
+ res = nsblk_add_resource(nd_region, ndd, nsblk,
+ __le64_to_cpu(nd_label->dpa));
+ if (!res)
+ goto blk_err;
+ nd_dbg_dpa(nd_region, ndd, res, "%d: assign\n", count);
+ return dev;
+ blk_err:
+ namespace_blk_release(dev);
+ return ERR_PTR(-ENXIO);
+}
+
+static int cmp_dpa(const void *a, const void *b)
+{
+ const struct device *dev_a = *(const struct device **) a;
+ const struct device *dev_b = *(const struct device **) b;
+ struct nd_namespace_blk *nsblk_a, *nsblk_b;
+ struct nd_namespace_pmem *nspm_a, *nspm_b;
+
+ if (is_namespace_io(dev_a))
+ return 0;
+
+ if (is_namespace_blk(dev_a)) {
+ nsblk_a = to_nd_namespace_blk(dev_a);
+ nsblk_b = to_nd_namespace_blk(dev_b);
+
+ return memcmp(&nsblk_a->res[0]->start, &nsblk_b->res[0]->start,
+ sizeof(resource_size_t));
+ }
+
+ nspm_a = to_nd_namespace_pmem(dev_a);
+ nspm_b = to_nd_namespace_pmem(dev_b);
+
+ return memcmp(&nspm_a->nsio.res.start, &nspm_b->nsio.res.start,
+ sizeof(resource_size_t));
+}