linux/drivers/nvdimm
Linus Torvalds a3841f94c7 libnvdimm for 4.15
* Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable
  'userspace flush' of persistent memory updates via filesystem-dax
   mappings. It arranges for any filesystem metadata updates that may be
   required to satisfy a write fault to also be flushed ("on disk") before
   the kernel returns to userspace from the fault handler. Effectively
   every write-fault that dirties metadata completes an fsync() before
   returning from the fault handler. The new MAP_SHARED_VALIDATE mapping
   type guarantees that the MAP_SYNC flag is validated as supported by the
   filesystem's ->mmap() file operation.
 
 * Add support for the standard ACPI 6.2 label access methods that
   replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods. This
   enables interoperability with environments that only implement the
   standardized methods.
 
 * Add support for the ACPI 6.2 NVDIMM media error injection methods.
 
 * Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for latch
   last shutdown status, firmware update, SMART error injection, and
   SMART alarm threshold control.
 
 * Cleanup physical address information disclosures to be root-only.
 
 * Fix revalidation of the DIMM "locked label area" status to support
   dynamic unlock of the label area.
 
 * Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA
   (system-physical-address) command and error injection commands.
 
 Acknowledgements that came after the commits were pushed to -next:
 
 957ac8c421 dax: fix PMD faults on zero-length files
 Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
 
 a39e596baa xfs: support for synchronous DAX faults
 Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
 
 7b565c9f96 xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()
 Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
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Merge tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm and dax updates from Dan Williams:
 "Save for a few late fixes, all of these commits have shipped in -next
  releases since before the merge window opened, and 0day has given a
  build success notification.

  The ext4 touches came from Jan, and the xfs touches have Darrick's
  reviewed-by. An xfstest for the MAP_SYNC feature has been through
  a few round of reviews and is on track to be merged.

   - Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable
     'userspace flush' of persistent memory updates via filesystem-dax
     mappings. It arranges for any filesystem metadata updates that may
     be required to satisfy a write fault to also be flushed ("on disk")
     before the kernel returns to userspace from the fault handler.
     Effectively every write-fault that dirties metadata completes an
     fsync() before returning from the fault handler. The new
     MAP_SHARED_VALIDATE mapping type guarantees that the MAP_SYNC flag
     is validated as supported by the filesystem's ->mmap() file
     operation.

   - Add support for the standard ACPI 6.2 label access methods that
     replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods.
     This enables interoperability with environments that only implement
     the standardized methods.

   - Add support for the ACPI 6.2 NVDIMM media error injection methods.

   - Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for
     latch last shutdown status, firmware update, SMART error injection,
     and SMART alarm threshold control.

   - Cleanup physical address information disclosures to be root-only.

   - Fix revalidation of the DIMM "locked label area" status to support
     dynamic unlock of the label area.

   - Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA
     (system-physical-address) command and error injection commands.

  Acknowledgements that came after the commits were pushed to -next:

   - 957ac8c421 ("dax: fix PMD faults on zero-length files"):
       Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>

   - a39e596baa ("xfs: support for synchronous DAX faults") and
     7b565c9f96 ("xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()")
        Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>"

* tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (49 commits)
  acpi, nfit: add 'Enable Latch System Shutdown Status' command support
  dax: fix general protection fault in dax_alloc_inode
  dax: fix PMD faults on zero-length files
  dax: stop requiring a live device for dax_flush()
  brd: remove dax support
  dax: quiet bdev_dax_supported()
  fs, dax: unify IOMAP_F_DIRTY read vs write handling policy in the dax core
  tools/testing/nvdimm: unit test clear-error commands
  acpi, nfit: validate commands against the device type
  tools/testing/nvdimm: stricter bounds checking for error injection commands
  xfs: support for synchronous DAX faults
  xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()
  ext4: Support for synchronous DAX faults
  ext4: Simplify error handling in ext4_dax_huge_fault()
  dax: Implement dax_finish_sync_fault()
  dax, iomap: Add support for synchronous faults
  mm: Define MAP_SYNC and VM_SYNC flags
  dax: Allow tuning whether dax_insert_mapping_entry() dirties entry
  dax: Allow dax_iomap_fault() to return pfn
  dax: Fix comment describing dax_iomap_fault()
  ...
2017-11-17 09:51:57 -08:00
..
Kconfig treewide: Fix typos in Kconfig 2017-10-12 15:42:00 +02:00
Makefile libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
badrange.c libnvdimm, badrange: remove a WARN for list_empty 2017-11-02 10:42:30 -07:00
blk.c block: guard bvec iteration logic 2017-07-03 16:56:26 -06:00
btt.c bdi: introduce BDI_CAP_SYNCHRONOUS_IO 2017-11-15 18:21:02 -08:00
btt.h libnvdimm, btt: rework error clearing 2017-08-31 15:05:10 -07:00
btt_devs.c libnvdimm: rename nd_sector_size_{show,store} to nd_size_select_{show,store} 2017-08-11 17:36:54 -07:00
bus.c libnvdimm: move poison list functions to a new 'badrange' file 2017-11-02 10:42:30 -07:00
claim.c libnvdimm, btt: rework error clearing 2017-08-31 15:05:10 -07:00
core.c libnvdimm: move poison list functions to a new 'badrange' file 2017-11-02 10:42:30 -07:00
dax_devs.c Merge branch 'for-4.13/dax' into libnvdimm-for-next 2017-07-03 16:54:58 -07:00
dimm.c acpi, nfit: add support for the _LSI, _LSR, and _LSW label methods 2017-10-07 10:03:40 -07:00
dimm_devs.c libnvdimm: introduce 'flags' attribute for DIMM 'lock' and 'alias' status 2017-10-07 10:04:06 -07:00
e820.c libnvdimm, e820: use module_platform_driver 2016-12-05 08:52:21 -08:00
label.c libnvdimm, namespace: fix label initialization to use valid seq numbers 2017-09-28 09:13:06 -07:00
label.h libnvdimm, btt: BTT updates for UEFI 2.7 format 2017-06-29 13:50:38 -07:00
namespace_devs.c libnvdimm, namespace: make a couple of functions static 2017-10-07 10:04:06 -07:00
nd-core.h libnvdimm: move poison list functions to a new 'badrange' file 2017-11-02 10:42:30 -07:00
nd.h libnvdimm: move poison list functions to a new 'badrange' file 2017-11-02 10:42:30 -07:00
pfn.h libnvdimm, dax: autodetect support 2016-05-20 22:02:57 -07:00
pfn_devs.c libnvdimm, pfn: make 'resource' attribute only readable by root 2017-09-28 09:13:06 -07:00
pmem.c bdi: introduce BDI_CAP_SYNCHRONOUS_IO 2017-11-15 18:21:02 -08:00
pmem.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
region.c libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime 2017-06-30 18:56:03 -07:00
region_devs.c libnvdimm, region : make 'resource' attribute only readable by root 2017-09-28 09:13:06 -07:00