Merge tag 'libnvdimm-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "The highlight this cycle is continuing integration fixes for PowerPC
  and some resulting optimizations.

  Summary:

   - Updates to better support vmalloc space restrictions on PowerPC
     platforms.

   - Cleanups to move common sysfs attributes to core 'struct
     device_type' objects.

   - Export the 'target_node' attribute (the effective numa node if pmem
     is marked online) for regions and namespaces.

   - Miscellaneous fixups and optimizations"

* tag 'libnvdimm-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
  MAINTAINERS: Remove Keith from NVDIMM maintainers
  libnvdimm: Export the target_node attribute for regions and namespaces
  dax: Add numa_node to the default device-dax attributes
  libnvdimm: Simplify root read-only definition for the 'resource' attribute
  dax: Simplify root read-only definition for the 'resource' attribute
  dax: Create a dax device_type
  libnvdimm: Move nvdimm_bus_attribute_group to device_type
  libnvdimm: Move nvdimm_attribute_group to device_type
  libnvdimm: Move nd_mapping_attribute_group to device_type
  libnvdimm: Move nd_region_attribute_group to device_type
  libnvdimm: Move nd_numa_attribute_group to device_type
  libnvdimm: Move nd_device_attribute_group to device_type
  libnvdimm: Move region attribute group definition
  libnvdimm: Move attribute groups to device type
  libnvdimm: Remove prototypes for nonexistent functions
  libnvdimm/btt: fix variable 'rc' set but not used
  libnvdimm/pmem: Delete include of nd-core.h
  libnvdimm/namespace: Differentiate between probe mapping and runtime mapping
  libnvdimm/pfn_dev: Don't clear device memmap area during generic namespace probe
  libnvdimm: Trivial comment fix
  ...

1 files changed, 120 insertions, 115 deletions

diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index fbf34cf688f4..a19e535830d9 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -140,36 +140,6 @@ static void nd_region_release(struct device *dev)
 		kfree(nd_region);
 }
 
-static struct device_type nd_blk_device_type = {
-	.name = "nd_blk",
-	.release = nd_region_release,
-};
-
-static struct device_type nd_pmem_device_type = {
-	.name = "nd_pmem",
-	.release = nd_region_release,
-};
-
-static struct device_type nd_volatile_device_type = {
-	.name = "nd_volatile",
-	.release = nd_region_release,
-};
-
-bool is_nd_pmem(struct device *dev)
-{
-	return dev ? dev->type == &nd_pmem_device_type : false;
-}
-
-bool is_nd_blk(struct device *dev)
-{
-	return dev ? dev->type == &nd_blk_device_type : false;
-}
-
-bool is_nd_volatile(struct device *dev)
-{
-	return dev ? dev->type == &nd_volatile_device_type : false;
-}
-
 struct nd_region *to_nd_region(struct device *dev)
 {
 	struct nd_region *nd_region = container_of(dev, struct nd_region, dev);
@@ -583,7 +553,7 @@ static ssize_t resource_show(struct device *dev,
 
 	return sprintf(buf, "%#llx\n", nd_region->ndr_start);
 }
-static DEVICE_ATTR_RO(resource);
+static DEVICE_ATTR(resource, 0400, resource_show, NULL);
 
 static ssize_t persistence_domain_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
@@ -635,12 +605,8 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
 	if (!is_memory(dev) && a == &dev_attr_badblocks.attr)
 		return 0;
 
-	if (a == &dev_attr_resource.attr) {
-		if (is_memory(dev))
-			return 0400;
-		else
-			return 0;
-	}
+	if (a == &dev_attr_resource.attr && !is_memory(dev))
+		return 0;
 
 	if (a == &dev_attr_deep_flush.attr) {
 		int has_flush = nvdimm_has_flush(nd_region);
@@ -674,80 +640,6 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
 	return 0;
 }
 
-struct attribute_group nd_region_attribute_group = {
-	.attrs = nd_region_attributes,
-	.is_visible = region_visible,
-};
-EXPORT_SYMBOL_GPL(nd_region_attribute_group);
-
-u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
-		struct nd_namespace_index *nsindex)
-{
-	struct nd_interleave_set *nd_set = nd_region->nd_set;
-
-	if (!nd_set)
-		return 0;
-
-	if (nsindex && __le16_to_cpu(nsindex->major) == 1
-			&& __le16_to_cpu(nsindex->minor) == 1)
-		return nd_set->cookie1;
-	return nd_set->cookie2;
-}
-
-u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
-{
-	struct nd_interleave_set *nd_set = nd_region->nd_set;
-
-	if (nd_set)
-		return nd_set->altcookie;
-	return 0;
-}
-
-void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
-{
-	struct nd_label_ent *label_ent, *e;
-
-	lockdep_assert_held(&nd_mapping->lock);
-	list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
-		list_del(&label_ent->list);
-		kfree(label_ent);
-	}
-}
-
-/*
- * When a namespace is activated create new seeds for the next
- * namespace, or namespace-personality to be configured.
- */
-void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev)
-{
-	nvdimm_bus_lock(dev);
-	if (nd_region->ns_seed == dev) {
-		nd_region_create_ns_seed(nd_region);
-	} else if (is_nd_btt(dev)) {
-		struct nd_btt *nd_btt = to_nd_btt(dev);
-
-		if (nd_region->btt_seed == dev)
-			nd_region_create_btt_seed(nd_region);
-		if (nd_region->ns_seed == &nd_btt->ndns->dev)
-			nd_region_create_ns_seed(nd_region);
-	} else if (is_nd_pfn(dev)) {
-		struct nd_pfn *nd_pfn = to_nd_pfn(dev);
-
-		if (nd_region->pfn_seed == dev)
-			nd_region_create_pfn_seed(nd_region);
-		if (nd_region->ns_seed == &nd_pfn->ndns->dev)
-			nd_region_create_ns_seed(nd_region);
-	} else if (is_nd_dax(dev)) {
-		struct nd_dax *nd_dax = to_nd_dax(dev);
-
-		if (nd_region->dax_seed == dev)
-			nd_region_create_dax_seed(nd_region);
-		if (nd_region->ns_seed == &nd_dax->nd_pfn.ndns->dev)
-			nd_region_create_ns_seed(nd_region);
-	}
-	nvdimm_bus_unlock(dev);
-}
-
 static ssize_t mappingN(struct device *dev, char *buf, int n)
 {
 	struct nd_region *nd_region = to_nd_region(dev);
@@ -855,11 +747,124 @@ static struct attribute *mapping_attributes[] = {
 	NULL,
 };
 
-struct attribute_group nd_mapping_attribute_group = {
+static const struct attribute_group nd_mapping_attribute_group = {
 	.is_visible = mapping_visible,
 	.attrs = mapping_attributes,
 };
-EXPORT_SYMBOL_GPL(nd_mapping_attribute_group);
+
+static const struct attribute_group nd_region_attribute_group = {
+	.attrs = nd_region_attributes,
+	.is_visible = region_visible,
+};
+
+static const struct attribute_group *nd_region_attribute_groups[] = {
+	&nd_device_attribute_group,
+	&nd_region_attribute_group,
+	&nd_numa_attribute_group,
+	&nd_mapping_attribute_group,
+	NULL,
+};
+
+static const struct device_type nd_blk_device_type = {
+	.name = "nd_blk",
+	.release = nd_region_release,
+	.groups = nd_region_attribute_groups,
+};
+
+static const struct device_type nd_pmem_device_type = {
+	.name = "nd_pmem",
+	.release = nd_region_release,
+	.groups = nd_region_attribute_groups,
+};
+
+static const struct device_type nd_volatile_device_type = {
+	.name = "nd_volatile",
+	.release = nd_region_release,
+	.groups = nd_region_attribute_groups,
+};
+
+bool is_nd_pmem(struct device *dev)
+{
+	return dev ? dev->type == &nd_pmem_device_type : false;
+}
+
+bool is_nd_blk(struct device *dev)
+{
+	return dev ? dev->type == &nd_blk_device_type : false;
+}
+
+bool is_nd_volatile(struct device *dev)
+{
+	return dev ? dev->type == &nd_volatile_device_type : false;
+}
+
+u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
+		struct nd_namespace_index *nsindex)
+{
+	struct nd_interleave_set *nd_set = nd_region->nd_set;
+
+	if (!nd_set)
+		return 0;
+
+	if (nsindex && __le16_to_cpu(nsindex->major) == 1
+			&& __le16_to_cpu(nsindex->minor) == 1)
+		return nd_set->cookie1;
+	return nd_set->cookie2;
+}
+
+u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region)
+{
+	struct nd_interleave_set *nd_set = nd_region->nd_set;
+
+	if (nd_set)
+		return nd_set->altcookie;
+	return 0;
+}
+
+void nd_mapping_free_labels(struct nd_mapping *nd_mapping)
+{
+	struct nd_label_ent *label_ent, *e;
+
+	lockdep_assert_held(&nd_mapping->lock);
+	list_for_each_entry_safe(label_ent, e, &nd_mapping->labels, list) {
+		list_del(&label_ent->list);
+		kfree(label_ent);
+	}
+}
+
+/*
+ * When a namespace is activated create new seeds for the next
+ * namespace, or namespace-personality to be configured.
+ */
+void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev)
+{
+	nvdimm_bus_lock(dev);
+	if (nd_region->ns_seed == dev) {
+		nd_region_create_ns_seed(nd_region);
+	} else if (is_nd_btt(dev)) {
+		struct nd_btt *nd_btt = to_nd_btt(dev);
+
+		if (nd_region->btt_seed == dev)
+			nd_region_create_btt_seed(nd_region);
+		if (nd_region->ns_seed == &nd_btt->ndns->dev)
+			nd_region_create_ns_seed(nd_region);
+	} else if (is_nd_pfn(dev)) {
+		struct nd_pfn *nd_pfn = to_nd_pfn(dev);
+
+		if (nd_region->pfn_seed == dev)
+			nd_region_create_pfn_seed(nd_region);
+		if (nd_region->ns_seed == &nd_pfn->ndns->dev)
+			nd_region_create_ns_seed(nd_region);
+	} else if (is_nd_dax(dev)) {
+		struct nd_dax *nd_dax = to_nd_dax(dev);
+
+		if (nd_region->dax_seed == dev)
+			nd_region_create_dax_seed(nd_region);
+		if (nd_region->ns_seed == &nd_dax->nd_pfn.ndns->dev)
+			nd_region_create_ns_seed(nd_region);
+	}
+	nvdimm_bus_unlock(dev);
+}
 
 int nd_blk_region_init(struct nd_region *nd_region)
 {
@@ -931,8 +936,8 @@ void nd_region_release_lane(struct nd_region *nd_region, unsigned int lane)
 EXPORT_SYMBOL(nd_region_release_lane);
 
 static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus,
-		struct nd_region_desc *ndr_desc, struct device_type *dev_type,
-		const char *caller)
+		struct nd_region_desc *ndr_desc,
+		const struct device_type *dev_type, const char *caller)
 {
 	struct nd_region *nd_region;
 	struct device *dev;