• Linus Torvalds's avatar
    Merge tag 'dax-misc-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 315227f6
    Linus Torvalds authored
    Pull misc DAX updates from Vishal Verma:
     "DAX error handling for 4.7
       - Until now, dax has been disabled if media errors were found on any
         device.  This enables the use of DAX in the presence of these
         errors by making all sector-aligned zeroing go through the driver.
       - The driver (already) has the ability to clear errors on writes that
         are sent through the block layer using 'DSMs' defined in ACPI 6.1.
      Other misc changes:
       - When mounting DAX filesystems, check to make sure the partition is
         page aligned.  This is a requirement for DAX, and previously, we
         allowed such unaligned mounts to succeed, but subsequent
         reads/writes would fail.
       - Misc/cleanup fixes from Jan that remove unused code from DAX
         related to zeroing, writeback, and some size checks"
    * tag 'dax-misc-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
      dax: fix a comment in dax_zero_page_range and dax_truncate_page
      dax: for truncate/hole-punch, do zeroing through the driver if possible
      dax: export a low-level __dax_zero_page_range helper
      dax: use sb_issue_zerout instead of calling dax_clear_sectors
      dax: enable dax in the presence of known media errors (badblocks)
      dax: fallback from pmd to pte on error
      block: Update blkdev_dax_capable() for consistency
      xfs: Add alignment check for DAX mount
      ext2: Add alignment check for DAX mount
      ext4: Add alignment check for DAX mount
      block: Add bdev_dax_supported() for dax mount checks
      block: Add vfs_msg() interface
      dax: Remove redundant inode size checks
      dax: Remove pointless writeback from dax_do_io()
      dax: Remove zeroing from dax_io()
      dax: Remove dead zeroing code from fault handlers
      ext2: Avoid DAX zeroing to corrupt data
      ext2: Fix block zeroing in ext2_get_blocks() for DAX
      dax: Remove complete_unwritten argument
      DAX: move RADIX_DAX_ definitions to dax.c
ioctl.c 14.6 KB