tree 9b1eb10e1a0567413443281387b09d02b514b5ec
parent 315227f6da389f3a560f27f7777080857278e1b4
parent 4d9a2c8746671efbb0c27d3ae28c7474597a7aad
author Linus Torvalds <torvalds@linux-foundation.org> 1464318028 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1464318028 -0700
mergetag object 4d9a2c8746671efbb0c27d3ae28c7474597a7aad
 type commit
 tag dax-locking-for-4.7
 tagger Ross Zwisler <ross.zwisler@linux.intel.com> 1464118249 -0600
 
 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 index.
 
 - Filesystem DAX PMD faults are disabled, and will be re-enabled when PMD
   locking is implemented.
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Merge tag 'dax-locking-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

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
     index.

   - 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