}
EXPORT_SYMBOL(nd_region_to_nstype);
-static int is_uuid_busy(struct device *dev, void *data)
-{
- struct nd_region *nd_region = to_nd_region(dev->parent);
- u8 *uuid = data;
-
- switch (nd_region_to_nstype(nd_region)) {
- case ND_DEVICE_NAMESPACE_PMEM: {
- struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev);
-
- if (!nspm->uuid)
- break;
- if (memcmp(uuid, nspm->uuid, NSLABEL_UUID_LEN) == 0)
- return -EBUSY;
- break;
- }
- case ND_DEVICE_NAMESPACE_BLK: {
- struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev);
-
- if (!nsblk->uuid)
- break;
- if (memcmp(uuid, nsblk->uuid, NSLABEL_UUID_LEN) == 0)
- return -EBUSY;
- break;
- }
- default:
- break;
- }
-
- return 0;
-}
-
-static int is_namespace_uuid_busy(struct device *dev, void *data)
-{
- if (is_nd_pmem(dev) || is_nd_blk(dev))
- return device_for_each_child(dev, data, is_uuid_busy);
- return 0;
-}
-
-/**
- * nd_is_uuid_unique - verify that no other namespace has @uuid
- * @dev: any device on a nvdimm_bus
- * @uuid: uuid to check
- */
-bool nd_is_uuid_unique(struct device *dev, u8 *uuid)
-{
- struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(dev);
-
- if (!nvdimm_bus)
- return false;
- WARN_ON_ONCE(!is_nvdimm_bus_locked(&nvdimm_bus->dev));
- if (device_for_each_child(&nvdimm_bus->dev, uuid,
- is_namespace_uuid_busy) != 0)
- return false;
- return true;
-}
-
static ssize_t size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
}
static DEVICE_ATTR_RO(btt_seed);
+static ssize_t pfn_seed_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct nd_region *nd_region = to_nd_region(dev);
+ ssize_t rc;
+
+ nvdimm_bus_lock(dev);
+ if (nd_region->pfn_seed)
+ rc = sprintf(buf, "%s\n", dev_name(nd_region->pfn_seed));
+ else
+ rc = sprintf(buf, "\n");
+ nvdimm_bus_unlock(dev);
+
+ return rc;
+}
+static DEVICE_ATTR_RO(pfn_seed);
+
static ssize_t read_only_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
&dev_attr_nstype.attr,
&dev_attr_mappings.attr,
&dev_attr_btt_seed.attr,
+ &dev_attr_pfn_seed.attr,
&dev_attr_read_only.attr,
&dev_attr_set_cookie.attr,
&dev_attr_available_size.attr,
nd_region->provider_data = ndr_desc->provider_data;
nd_region->nd_set = ndr_desc->nd_set;
nd_region->num_lanes = ndr_desc->num_lanes;
+ nd_region->flags = ndr_desc->flags;
nd_region->ro = ro;
nd_region->numa_node = ndr_desc->numa_node;
ida_init(&nd_region->ns_ida);
ida_init(&nd_region->btt_ida);
+ ida_init(&nd_region->pfn_ida);
dev = &nd_region->dev;
dev_set_name(dev, "region%d", nd_region->id);
dev->parent = &nvdimm_bus->dev;