Merge tag 'libnvdimm-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "Aside from the recently added pmem sub-division support these have
  been in -next for several releases with no reported issues. The sub-
  division support was included in next-20161010 with no reported
  issues. It passes all unit tests including new tests for all the new
  functionality below.

  Summary:

   - PMEM sub-division support: Allow a single PMEM region to be divided
     into multiple namespaces. Originally, ~2 years ago, it was thought
     that partitions of a /dev/pmemX block device could handle
     sub-allocations of persistent memory for different use cases. With
     the decision to not support DAX mappings of raw block-devices, and
     the genesis of device-dax, the need for having multiple
     pmem-namespace per region has grown.

   - Device-DAX unified inode: In support of dynamic-resizing of a
     device-dax instance the kernel arranges for all mappings of a
     device-dax node to share the same inode. This allows unmap /
     truncate / invalidation events to affect all instances of the
     device similar to the behavior of mmap on block devices.

   - Hardware error scrubbing reworks: The original address-range-scrub
     and badblocks tracking solution allowed clearing entries at the
     individual namespace level, but it failed to clear the internal
     list of media errors maintained at the bus level. The result was
     that the next scrub or namespace disable/re-enable event would
     restore the cleared badblocks, but now that is fixed. The v4.8
     kernel introduced an auto-scrub-on-machine-check behavior to
     repopulate the badblocks list. Now, in v4.9, the auto-scrub
     behavior can be disabled and simply arrange for the error reported
     in the machine-check to be added to the list.

   - DIMM health-event notification support: ACPI 6.1 defines a
     notification event code that can be send to ACPI NVDIMM devices. A
     poll(2) capable file descriptor for these events can be obtained
     from the nmemX/nfit/flags sysfs-attribute of a libnvdimm memory
     device.

   - Miscellaneous fixes: NVDIMM-N probe error, device-dax build error,
     and a change to dedup the flush hint list to not flush the memory
     controller more than necessary"

* tag 'libnvdimm-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (39 commits)
  /dev/dax: fix Kconfig dependency build breakage
  dax: use correct dev_t value
  dax: convert devm_create_dax_dev to PTR_ERR
  libnvdimm, namespace: allow creation of multiple pmem-namespaces per region
  libnvdimm, namespace: lift single pmem limit in scan_labels()
  libnvdimm, namespace: filter out of range labels in scan_labels()
  libnvdimm, namespace: enable allocation of multiple pmem namespaces
  libnvdimm, namespace: update label implementation for multi-pmem
  libnvdimm, namespace: expand pmem device naming scheme for multi-pmem
  libnvdimm, region: update nd_region_available_dpa() for multi-pmem support
  libnvdimm, namespace: sort namespaces by dpa at init
  libnvdimm, namespace: allow multiple pmem-namespaces per region at scan time
  tools/testing/nvdimm: support for sub-dividing a pmem region
  libnvdimm, namespace: unify blk and pmem label scanning
  libnvdimm, namespace: refactor uuid_show() into a namespace_to_uuid() helper
  libnvdimm, label: convert label tracking to a linked list
  libnvdimm, region: move region-mapping input-paramters to nd_mapping_desc
  nvdimm: reduce duplicated wpq flushes
  libnvdimm: clear the internal poison_list when clearing badblocks
  pmem: reduce kmap_atomic sections to the memcpys only
  ...

2 files changed, 18 insertions, 13 deletions

diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
index e398beac67b8..9bd559472c92 100644
--- a/include/uapi/linux/magic.h
+++ b/include/uapi/linux/magic.h
@@ -65,6 +65,7 @@
 #define V9FS_MAGIC		0x01021997
 
 #define BDEVFS_MAGIC            0x62646576
+#define DAXFS_MAGIC             0x64646178
 #define BINFMTFS_MAGIC          0x42494e4d
 #define DEVPTS_SUPER_MAGIC	0x1cd1
 #define FUTEXFS_SUPER_MAGIC	0xBAD1DEA
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h
index ba5a8c79652a..ede5c6a62164 100644
--- a/include/uapi/linux/ndctl.h
+++ b/include/uapi/linux/ndctl.h
@@ -21,14 +21,16 @@ struct nd_cmd_smart {
 } __packed;
 
 #define ND_SMART_HEALTH_VALID	(1 << 0)
-#define ND_SMART_TEMP_VALID 	(1 << 1)
-#define ND_SMART_SPARES_VALID	(1 << 2)
-#define ND_SMART_ALARM_VALID	(1 << 3)
-#define ND_SMART_USED_VALID	(1 << 4)
-#define ND_SMART_SHUTDOWN_VALID	(1 << 5)
-#define ND_SMART_VENDOR_VALID	(1 << 6)
-#define ND_SMART_TEMP_TRIP	(1 << 0)
-#define ND_SMART_SPARE_TRIP	(1 << 1)
+#define ND_SMART_SPARES_VALID	(1 << 1)
+#define ND_SMART_USED_VALID	(1 << 2)
+#define ND_SMART_TEMP_VALID 	(1 << 3)
+#define ND_SMART_CTEMP_VALID 	(1 << 4)
+#define ND_SMART_ALARM_VALID	(1 << 9)
+#define ND_SMART_SHUTDOWN_VALID	(1 << 10)
+#define ND_SMART_VENDOR_VALID	(1 << 11)
+#define ND_SMART_SPARE_TRIP	(1 << 0)
+#define ND_SMART_TEMP_TRIP	(1 << 1)
+#define ND_SMART_CTEMP_TRIP	(1 << 2)
 #define ND_SMART_NON_CRITICAL_HEALTH	(1 << 0)
 #define ND_SMART_CRITICAL_HEALTH	(1 << 1)
 #define ND_SMART_FATAL_HEALTH		(1 << 2)
@@ -37,14 +39,15 @@ struct nd_smart_payload {
 	__u32 flags;
 	__u8 reserved0[4];
 	__u8 health;
-	__u16 temperature;
 	__u8 spares;
-	__u8 alarm_flags;
 	__u8 life_used;
+	__u8 alarm_flags;
+	__u16 temperature;
+	__u16 ctrl_temperature;
+	__u8 reserved1[15];
 	__u8 shutdown_state;
-	__u8 reserved1;
 	__u32 vendor_size;
-	__u8 vendor_data[108];
+	__u8 vendor_data[92];
 } __packed;
 
 struct nd_cmd_smart_threshold {
@@ -53,7 +56,8 @@ struct nd_cmd_smart_threshold {
 } __packed;
 
 struct nd_smart_threshold_payload {
-	__u16 alarm_control;
+	__u8 alarm_control;
+	__u8 reserved0;
 	__u16 temperature;
 	__u8 spares;
 	__u8 reserved[3];