[PATCH 0/5 v2] Fanotify cleanups

[Jan Kara]

  Hello,

  when fixing use-after-free bug with fanotify introduced by my previous
cleanup patches (the fix is already merged by Linus), I have better understood
handling of permission events and found a couple of things that can be further
cleaned up.  This patch series uses the notify structure itself for processing
response to permission event (patch 2/5) thus saving some space and allocation,
converts access_mutex to spinlock (patch 3/5) which should be faster, and moves
code around copy_event_to_user() to make code more readable (patch 4/5, 5/5).

The patches pass LTP fanotify tests. Andrew, can you please take the patches?

Changes since v1:
- rebased on top of latest fanotify fixes which went to Linus (3.13-rc5)

								Honza
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