tree d34bc2f327d815814ee3b8df72694068ef596637
parent 925e0ea47cacc285286550dd48ff4b51cdd911ef
parent 41b9d7263ea1e270019c5d04fa0ab15db50b9725
author Linus Torvalds <torvalds@linux-foundation.org> 1410030797 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1410030797 -0700
mergetag object 41b9d7263ea1e270019c5d04fa0ab15db50b9725
 type commit
 tag xfs-for-linus-3.17-rc3
 tagger Dave Chinner <david@fromorbit.com> 1409958518 +1000
 
 xfs: fixes for v3.17-rc3
 
 Fix:
 - a direct IO read/buffered read data corruption
 - the associated fallout from the DIO data corruption fix
 - collapse range bugs that are potential data corruption issues.
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Merge tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs fixes from Dave Chinner:
 "The fixes all address recently discovered data corruption issues.

  The original Direct IO issue was discovered by Chris Mason @ Facebook
  on a production workload which mixed buffered reads with direct reads
  and writes IO to the same file.  The fix for that exposed other issues
  with page invalidation (exposed by millions of fsx operations) failing
  due to dirty buffers beyond EOF.

  Finally, the collapse_range code could also cause problems due to
  racing writeback changing the extent map while it was being shifted
  around.  The commits for that problem are simple mitigation fixes that
  prevent the problem from occuring.  A more robust fix for 3.18 that
  addresses the underlying problem is currently being worked on by
  Brian.

  Summary of fixes:
   - a direct IO read/buffered read data corruption
   - the associated fallout from the DIO data corruption fix
   - collapse range bugs that are potential data corruption issues"

* tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
  xfs: trim eofblocks before collapse range
  xfs: xfs_file_collapse_range is delalloc challenged
  xfs: don't log inode unless extent shift makes extent modifications
  xfs: use ranged writeback and invalidation for direct IO
  xfs: don't zero partial page cache pages during O_DIRECT writes
  xfs: don't zero partial page cache pages during O_DIRECT writes
  xfs: don't dirty buffers beyond EOF