• Linus Torvalds's avatar
    Merge tag 'dax-locking-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 478a1469
    Linus Torvalds authored
    Pull DAX locking updates from Ross Zwisler:
     "Filesystem DAX locking for 4.7
       - We use a bit in an exceptional radix tree entry as a lock bit and
         use it similarly to how page lock is used for normal faults.  This
         fixes races between hole instantiation and read faults of the same
       - Filesystem DAX PMD faults are disabled, and will be re-enabled when
         PMD locking is implemented"
    * tag 'dax-locking-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
      dax: Remove i_mmap_lock protection
      dax: Use radix tree entry lock to protect cow faults
      dax: New fault locking
      dax: Allow DAX code to replace exceptional entries
      dax: Define DAX lock bit for radix tree exceptional entry
      dax: Make huge page handling depend of CONFIG_BROKEN
      dax: Fix condition for filling of PMD holes
memory.c 108 KB