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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1572025

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1572025

Title:
  Regression for mmap writes through FUSE in 4.2+

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I apologize for being brief but all necessary details are behind the
  links below.

  Report:
  http://thread.gmane.org/gmane.linux.kernel/2132944

  Discussion:
  https://lkml.org/lkml/2016/3/16/260

  Patch:
  [writeback: Fix performance regression in wb_over_bg_thresh()]
  https://lkml.org/lkml/2016/3/10/21

  Patch was tested by Jakob Unterwurzacher and seems to have fixed the issue.
  Reverting to 3.13 or 3.19 works around the issue on 14.04.

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