1 files changed, 345 insertions, 81 deletions

diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index e1b5715bd91f..b199eea3260e 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -1,14 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 #ifndef __ND_H__
 #define __ND_H__
@@ -29,32 +21,290 @@ enum {
 	 * BTT instance
 	 */
 	ND_MAX_LANES = 256,
-	SECTOR_SHIFT = 9,
 	INT_LBASIZE_ALIGNMENT = 64,
 	NVDIMM_IO_ATOMIC = 1,
 };
 
-struct nd_poison {
-	u64 start;
-	u64 length;
-	struct list_head list;
-};
-
 struct nvdimm_drvdata {
 	struct device *dev;
-	int nsindex_size, nslabel_size;
+	int nslabel_size;
 	struct nd_cmd_get_config_size nsarea;
 	void *data;
+	bool cxl;
 	int ns_current, ns_next;
 	struct resource dpa;
 	struct kref kref;
 };
 
+static inline const u8 *nsl_ref_name(struct nvdimm_drvdata *ndd,
+				     struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return nd_label->cxl.name;
+	return nd_label->efi.name;
+}
+
+static inline u8 *nsl_get_name(struct nvdimm_drvdata *ndd,
+			       struct nd_namespace_label *nd_label, u8 *name)
+{
+	if (ndd->cxl)
+		return memcpy(name, nd_label->cxl.name, NSLABEL_NAME_LEN);
+	return memcpy(name, nd_label->efi.name, NSLABEL_NAME_LEN);
+}
+
+static inline u8 *nsl_set_name(struct nvdimm_drvdata *ndd,
+			       struct nd_namespace_label *nd_label, u8 *name)
+{
+	if (!name)
+		return NULL;
+	if (ndd->cxl)
+		return memcpy(nd_label->cxl.name, name, NSLABEL_NAME_LEN);
+	return memcpy(nd_label->efi.name, name, NSLABEL_NAME_LEN);
+}
+
+static inline u32 nsl_get_slot(struct nvdimm_drvdata *ndd,
+			       struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le32_to_cpu(nd_label->cxl.slot);
+	return __le32_to_cpu(nd_label->efi.slot);
+}
+
+static inline void nsl_set_slot(struct nvdimm_drvdata *ndd,
+				struct nd_namespace_label *nd_label, u32 slot)
+{
+	if (ndd->cxl)
+		nd_label->cxl.slot = __cpu_to_le32(slot);
+	else
+		nd_label->efi.slot = __cpu_to_le32(slot);
+}
+
+static inline u64 nsl_get_checksum(struct nvdimm_drvdata *ndd,
+				   struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le64_to_cpu(nd_label->cxl.checksum);
+	return __le64_to_cpu(nd_label->efi.checksum);
+}
+
+static inline void nsl_set_checksum(struct nvdimm_drvdata *ndd,
+				    struct nd_namespace_label *nd_label,
+				    u64 checksum)
+{
+	if (ndd->cxl)
+		nd_label->cxl.checksum = __cpu_to_le64(checksum);
+	else
+		nd_label->efi.checksum = __cpu_to_le64(checksum);
+}
+
+static inline u32 nsl_get_flags(struct nvdimm_drvdata *ndd,
+				struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le32_to_cpu(nd_label->cxl.flags);
+	return __le32_to_cpu(nd_label->efi.flags);
+}
+
+static inline void nsl_set_flags(struct nvdimm_drvdata *ndd,
+				 struct nd_namespace_label *nd_label, u32 flags)
+{
+	if (ndd->cxl)
+		nd_label->cxl.flags = __cpu_to_le32(flags);
+	else
+		nd_label->efi.flags = __cpu_to_le32(flags);
+}
+
+static inline u64 nsl_get_dpa(struct nvdimm_drvdata *ndd,
+			      struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le64_to_cpu(nd_label->cxl.dpa);
+	return __le64_to_cpu(nd_label->efi.dpa);
+}
+
+static inline void nsl_set_dpa(struct nvdimm_drvdata *ndd,
+			       struct nd_namespace_label *nd_label, u64 dpa)
+{
+	if (ndd->cxl)
+		nd_label->cxl.dpa = __cpu_to_le64(dpa);
+	else
+		nd_label->efi.dpa = __cpu_to_le64(dpa);
+}
+
+static inline u64 nsl_get_rawsize(struct nvdimm_drvdata *ndd,
+				  struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le64_to_cpu(nd_label->cxl.rawsize);
+	return __le64_to_cpu(nd_label->efi.rawsize);
+}
+
+static inline void nsl_set_rawsize(struct nvdimm_drvdata *ndd,
+				   struct nd_namespace_label *nd_label,
+				   u64 rawsize)
+{
+	if (ndd->cxl)
+		nd_label->cxl.rawsize = __cpu_to_le64(rawsize);
+	else
+		nd_label->efi.rawsize = __cpu_to_le64(rawsize);
+}
+
+static inline u64 nsl_get_isetcookie(struct nvdimm_drvdata *ndd,
+				     struct nd_namespace_label *nd_label)
+{
+	/* WARN future refactor attempts that break this assumption */
+	if (dev_WARN_ONCE(ndd->dev, ndd->cxl,
+			  "CXL labels do not use the isetcookie concept\n"))
+		return 0;
+	return __le64_to_cpu(nd_label->efi.isetcookie);
+}
+
+static inline void nsl_set_isetcookie(struct nvdimm_drvdata *ndd,
+				      struct nd_namespace_label *nd_label,
+				      u64 isetcookie)
+{
+	if (!ndd->cxl)
+		nd_label->efi.isetcookie = __cpu_to_le64(isetcookie);
+}
+
+static inline bool nsl_validate_isetcookie(struct nvdimm_drvdata *ndd,
+					   struct nd_namespace_label *nd_label,
+					   u64 cookie)
+{
+	/*
+	 * Let the EFI and CXL validation comingle, where fields that
+	 * don't matter to CXL always validate.
+	 */
+	if (ndd->cxl)
+		return true;
+	return cookie == __le64_to_cpu(nd_label->efi.isetcookie);
+}
+
+static inline u16 nsl_get_position(struct nvdimm_drvdata *ndd,
+				   struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le16_to_cpu(nd_label->cxl.position);
+	return __le16_to_cpu(nd_label->efi.position);
+}
+
+static inline void nsl_set_position(struct nvdimm_drvdata *ndd,
+				    struct nd_namespace_label *nd_label,
+				    u16 position)
+{
+	if (ndd->cxl)
+		nd_label->cxl.position = __cpu_to_le16(position);
+	else
+		nd_label->efi.position = __cpu_to_le16(position);
+}
+
+static inline u16 nsl_get_nlabel(struct nvdimm_drvdata *ndd,
+				 struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return 0;
+	return __le16_to_cpu(nd_label->efi.nlabel);
+}
+
+static inline void nsl_set_nlabel(struct nvdimm_drvdata *ndd,
+				  struct nd_namespace_label *nd_label,
+				  u16 nlabel)
+{
+	if (!ndd->cxl)
+		nd_label->efi.nlabel = __cpu_to_le16(nlabel);
+}
+
+static inline u16 nsl_get_nrange(struct nvdimm_drvdata *ndd,
+				 struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return __le16_to_cpu(nd_label->cxl.nrange);
+	return 1;
+}
+
+static inline void nsl_set_nrange(struct nvdimm_drvdata *ndd,
+				  struct nd_namespace_label *nd_label,
+				  u16 nrange)
+{
+	if (ndd->cxl)
+		nd_label->cxl.nrange = __cpu_to_le16(nrange);
+}
+
+static inline u64 nsl_get_lbasize(struct nvdimm_drvdata *ndd,
+				  struct nd_namespace_label *nd_label)
+{
+	/*
+	 * Yes, for some reason the EFI labels convey a massive 64-bit
+	 * lbasize, that got fixed for CXL.
+	 */
+	if (ndd->cxl)
+		return __le16_to_cpu(nd_label->cxl.lbasize);
+	return __le64_to_cpu(nd_label->efi.lbasize);
+}
+
+static inline void nsl_set_lbasize(struct nvdimm_drvdata *ndd,
+				   struct nd_namespace_label *nd_label,
+				   u64 lbasize)
+{
+	if (ndd->cxl)
+		nd_label->cxl.lbasize = __cpu_to_le16(lbasize);
+	else
+		nd_label->efi.lbasize = __cpu_to_le64(lbasize);
+}
+
+static inline const uuid_t *nsl_get_uuid(struct nvdimm_drvdata *ndd,
+					 struct nd_namespace_label *nd_label,
+					 uuid_t *uuid)
+{
+	if (ndd->cxl)
+		import_uuid(uuid, nd_label->cxl.uuid);
+	else
+		import_uuid(uuid, nd_label->efi.uuid);
+	return uuid;
+}
+
+static inline const uuid_t *nsl_set_uuid(struct nvdimm_drvdata *ndd,
+					 struct nd_namespace_label *nd_label,
+					 const uuid_t *uuid)
+{
+	if (ndd->cxl)
+		export_uuid(nd_label->cxl.uuid, uuid);
+	else
+		export_uuid(nd_label->efi.uuid, uuid);
+	return uuid;
+}
+
+static inline bool nsl_uuid_equal(struct nvdimm_drvdata *ndd,
+				  struct nd_namespace_label *nd_label,
+				  const uuid_t *uuid)
+{
+	uuid_t tmp;
+
+	if (ndd->cxl)
+		import_uuid(&tmp, nd_label->cxl.uuid);
+	else
+		import_uuid(&tmp, nd_label->efi.uuid);
+	return uuid_equal(&tmp, uuid);
+}
+
+static inline const u8 *nsl_uuid_raw(struct nvdimm_drvdata *ndd,
+				     struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return nd_label->cxl.uuid;
+	return nd_label->efi.uuid;
+}
+
+bool nsl_validate_type_guid(struct nvdimm_drvdata *ndd,
+			    struct nd_namespace_label *nd_label, guid_t *guid);
+enum nvdimm_claim_class nsl_get_claim_class(struct nvdimm_drvdata *ndd,
+					    struct nd_namespace_label *nd_label);
+
 struct nd_region_data {
 	int ns_count;
 	int ns_active;
 	unsigned int hints_shift;
-	void __iomem *flush_wpq[0];
+	void __iomem *flush_wpq[];
 };
 
 static inline void __iomem *ndrd_get_flush_wpq(struct nd_region_data *ndrd,
@@ -98,8 +348,8 @@ static inline struct nd_namespace_index *to_next_namespace_index(
 
 unsigned sizeof_namespace_label(struct nvdimm_drvdata *ndd);
 
-#define namespace_label_has(ndd, field) \
-	(offsetof(struct nd_namespace_label, field) \
+#define efi_namespace_label_has(ndd, field) \
+	(!ndd->cxl && offsetof(struct nvdimm_efi_label, field) \
 		< sizeof_namespace_label(ndd))
 
 #define nd_dbg_dpa(r, d, res, fmt, arg...) \
@@ -120,8 +370,12 @@ struct nd_percpu_lane {
 	spinlock_t lock;
 };
 
+enum nd_label_flags {
+	ND_LABEL_REAP,
+};
 struct nd_label_ent {
 	struct list_head list;
+	unsigned long flags;
 	struct nd_namespace_label *label;
 };
 
@@ -134,6 +388,7 @@ struct nd_mapping {
 	struct nvdimm *nvdimm;
 	u64 start;
 	u64 size;
+	int position;
 	struct list_head labels;
 	struct mutex lock;
 	/*
@@ -156,25 +411,28 @@ struct nd_region {
 	struct device *btt_seed;
 	struct device *pfn_seed;
 	struct device *dax_seed;
+	unsigned long align;
 	u16 ndr_mappings;
 	u64 ndr_size;
 	u64 ndr_start;
-	int id, num_lanes, ro, numa_node;
+	int id, num_lanes, ro, numa_node, target_node;
 	void *provider_data;
 	struct kernfs_node *bb_state;
 	struct badblocks bb;
 	struct nd_interleave_set *nd_set;
 	struct nd_percpu_lane __percpu *lane;
-	struct nd_mapping mapping[0];
+	int (*flush)(struct nd_region *nd_region, struct bio *bio);
+	struct nd_mapping mapping[] __counted_by(ndr_mappings);
 };
 
-struct nd_blk_region {
-	int (*enable)(struct nvdimm_bus *nvdimm_bus, struct device *dev);
-	int (*do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
-			void *iobuf, u64 len, int rw);
-	void *blk_provider_data;
-	struct nd_region nd_region;
-};
+static inline bool nsl_validate_nlabel(struct nd_region *nd_region,
+				       struct nvdimm_drvdata *ndd,
+				       struct nd_namespace_label *nd_label)
+{
+	if (ndd->cxl)
+		return true;
+	return nsl_get_nlabel(ndd, nd_label) == nd_region->ndr_mappings;
+}
 
 /*
  * Lookup next in the repeating sequence of 01, 10, and 11.
@@ -193,7 +451,7 @@ struct nd_btt {
 	struct btt *btt;
 	unsigned long lbasize;
 	u64 size;
-	u8 *uuid;
+	uuid_t *uuid;
 	int id;
 	int initial_offset;
 	u16 version_major;
@@ -208,7 +466,7 @@ enum nd_pfn_mode {
 
 struct nd_pfn {
 	int id;
-	u8 *uuid;
+	uuid_t *uuid;
 	struct device dev;
 	unsigned long align;
 	unsigned long npfns;
@@ -221,38 +479,57 @@ struct nd_dax {
 	struct nd_pfn nd_pfn;
 };
 
+static inline u32 nd_info_block_reserve(void)
+{
+	return ALIGN(SZ_8K, PAGE_SIZE);
+}
+
 enum nd_async_mode {
 	ND_SYNC,
 	ND_ASYNC,
 };
 
-int nd_integrity_init(struct gendisk *disk, unsigned long meta_size);
 void wait_nvdimm_bus_probe_idle(struct device *dev);
 void nd_device_register(struct device *dev);
 void nd_device_unregister(struct device *dev, enum nd_async_mode mode);
 void nd_device_notify(struct device *dev, enum nvdimm_event event);
-int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf,
+int nd_uuid_store(struct device *dev, uuid_t **uuid_out, const char *buf,
 		size_t len);
-ssize_t nd_sector_size_show(unsigned long current_lbasize,
+ssize_t nd_size_select_show(unsigned long current_size,
 		const unsigned long *supported, char *buf);
-ssize_t nd_sector_size_store(struct device *dev, const char *buf,
-		unsigned long *current_lbasize, const unsigned long *supported);
+ssize_t nd_size_select_store(struct device *dev, const char *buf,
+		unsigned long *current_size, const unsigned long *supported);
 int __init nvdimm_init(void);
 int __init nd_region_init(void);
 int __init nd_label_init(void);
 void nvdimm_exit(void);
 void nd_region_exit(void);
 struct nvdimm;
+extern const struct attribute_group nd_device_attribute_group;
+extern const struct attribute_group nd_numa_attribute_group;
+extern const struct attribute_group *nvdimm_bus_attribute_groups[];
 struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping);
 int nvdimm_check_config_data(struct device *dev);
 int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
 int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
+int nvdimm_get_config_data(struct nvdimm_drvdata *ndd, void *buf,
+			   size_t offset, size_t len);
 int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
 		void *buf, size_t len);
 long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
 		unsigned int len);
-void nvdimm_set_aliasing(struct device *dev);
+void nvdimm_set_labeling(struct device *dev);
 void nvdimm_set_locked(struct device *dev);
+void nvdimm_clear_locked(struct device *dev);
+int nvdimm_security_setup_events(struct device *dev);
+#if IS_ENABLED(CONFIG_NVDIMM_KEYS)
+int nvdimm_security_unlock(struct device *dev);
+#else
+static inline int nvdimm_security_unlock(struct device *dev)
+{
+	return 0;
+}
+#endif
 struct nd_btt *to_nd_btt(struct device *dev);
 
 struct nd_gen_sb {
@@ -285,13 +562,16 @@ static inline struct device *nd_btt_create(struct nd_region *nd_region)
 
 struct nd_pfn *to_nd_pfn(struct device *dev);
 #if IS_ENABLED(CONFIG_NVDIMM_PFN)
+
+#define MAX_NVDIMM_ALIGN	4
+
 int nd_pfn_probe(struct device *dev, struct nd_namespace_common *ndns);
 bool is_nd_pfn(struct device *dev);
 struct device *nd_pfn_create(struct nd_region *nd_region);
 struct device *nd_pfn_devinit(struct nd_pfn *nd_pfn,
 		struct nd_namespace_common *ndns);
 int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig);
-extern struct attribute_group nd_pfn_attribute_group;
+extern const struct attribute_group *nd_pfn_attribute_groups[];
 #else
 static inline int nd_pfn_probe(struct device *dev,
 		struct nd_namespace_common *ndns)
@@ -318,8 +598,15 @@ static inline int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
 struct nd_dax *to_nd_dax(struct device *dev);
 #if IS_ENABLED(CONFIG_NVDIMM_DAX)
 int nd_dax_probe(struct device *dev, struct nd_namespace_common *ndns);
-bool is_nd_dax(struct device *dev);
+bool is_nd_dax(const struct device *dev);
 struct device *nd_dax_create(struct nd_region *nd_region);
+static inline struct device *nd_dax_devinit(struct nd_dax *nd_dax,
+					    struct nd_namespace_common *ndns)
+{
+	if (!nd_dax)
+		return NULL;
+	return nd_pfn_devinit(&nd_dax->nd_pfn, ndns);
+}
 #else
 static inline int nd_dax_probe(struct device *dev,
 		struct nd_namespace_common *ndns)
@@ -327,7 +614,7 @@ static inline int nd_dax_probe(struct device *dev,
 	return -ENODEV;
 }
 
-static inline bool is_nd_dax(struct device *dev)
+static inline bool is_nd_dax(const struct device *dev)
 {
 	return false;
 }
@@ -338,7 +625,6 @@ static inline struct device *nd_dax_create(struct nd_region *nd_region)
 }
 #endif
 
-struct nd_region *to_nd_region(struct device *dev);
 int nd_region_to_nstype(struct nd_region *nd_region);
 int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
 u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
@@ -346,8 +632,11 @@ u64 nd_region_interleave_set_cookie(struct nd_region *nd_region,
 u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region);
 void nvdimm_bus_lock(struct device *dev);
 void nvdimm_bus_unlock(struct device *dev);
+DEFINE_GUARD(nvdimm_bus, struct device *,
+	     if (_T) nvdimm_bus_lock(_T), if (_T) nvdimm_bus_unlock(_T));
+
 bool is_nvdimm_bus_locked(struct device *dev);
-int nvdimm_revalidate_disk(struct gendisk *disk);
+void nvdimm_check_and_set_ro(struct gendisk *disk);
 void nvdimm_drvdata_release(struct kref *kref);
 void put_ndd(struct nvdimm_drvdata *ndd);
 int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd);
@@ -356,62 +645,38 @@ struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd,
 		struct nd_label_id *label_id, resource_size_t start,
 		resource_size_t n);
 resource_size_t nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
+bool nvdimm_namespace_locked(struct nd_namespace_common *ndns);
 struct nd_namespace_common *nvdimm_namespace_common_probe(struct device *dev);
 int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns);
 int nvdimm_namespace_detach_btt(struct nd_btt *nd_btt);
 const char *nvdimm_namespace_disk_name(struct nd_namespace_common *ndns,
 		char *name);
 unsigned int pmem_sector_size(struct nd_namespace_common *ndns);
+struct range;
 void nvdimm_badblocks_populate(struct nd_region *nd_region,
-		struct badblocks *bb, const struct resource *res);
+		struct badblocks *bb, const struct range *range);
+int devm_namespace_enable(struct device *dev, struct nd_namespace_common *ndns,
+		resource_size_t size);
+void devm_namespace_disable(struct device *dev,
+		struct nd_namespace_common *ndns);
 #if IS_ENABLED(CONFIG_ND_CLAIM)
-struct vmem_altmap *nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
-		struct resource *res, struct vmem_altmap *altmap);
-int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio);
-void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio);
+/* max struct page size independent of kernel config */
+#define MAX_STRUCT_PAGE_SIZE 64
+int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap);
 #else
-static inline struct vmem_altmap *nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
-		struct resource *res, struct vmem_altmap *altmap)
-{
-	return ERR_PTR(-ENXIO);
-}
-static inline int devm_nsio_enable(struct device *dev,
-		struct nd_namespace_io *nsio)
+static inline int nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
+				   struct dev_pagemap *pgmap)
 {
 	return -ENXIO;
 }
-static inline void devm_nsio_disable(struct device *dev,
-		struct nd_namespace_io *nsio)
-{
-}
 #endif
-int nd_blk_region_init(struct nd_region *nd_region);
 int nd_region_activate(struct nd_region *nd_region);
-void __nd_iostat_start(struct bio *bio, unsigned long *start);
-static inline bool nd_iostat_start(struct bio *bio, unsigned long *start)
-{
-	struct gendisk *disk = bio->bi_bdev->bd_disk;
-
-	if (!blk_queue_io_stat(disk->queue))
-		return false;
-
-	*start = jiffies;
-	generic_start_io_acct(bio_data_dir(bio),
-			      bio_sectors(bio), &disk->part0);
-	return true;
-}
-static inline void nd_iostat_end(struct bio *bio, unsigned long start)
-{
-	struct gendisk *disk = bio->bi_bdev->bd_disk;
-
-	generic_end_io_acct(bio_data_dir(bio), &disk->part0, start);
-}
 static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
 		unsigned int len)
 {
 	if (bb->count) {
 		sector_t first_bad;
-		int num_bad;
+		sector_t num_bad;
 
 		return !!badblocks_check(bb, sector, len / 512, &first_bad,
 				&num_bad);
@@ -419,7 +684,6 @@ static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
 
 	return false;
 }
-resource_size_t nd_namespace_blk_validate(struct nd_namespace_blk *nsblk);
-const u8 *nd_dev_to_uuid(struct device *dev);
+const uuid_t *nd_dev_to_uuid(struct device *dev);
 bool pmem_should_map_pages(struct device *dev);
 #endif /* __ND_H__ */