K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2016-07-29T18:26:15.665559Z
K 7
svn:log
V 484
Fix locking issues with aio_fsync().

- Use correct lock in aio_cancel_sync when dequeueing job.
- Add _locked variants of aio_set/clear_cancel_function and use those
  to avoid lock recursion when adding and removing fsync jobs to the
  per-process sync queue.
- While here, add a basic test for aio_fsync().

PR:		211390
Reported by:	Randy Westlund <rwestlun@gmail.com>
MFC after:	1 week
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D7339

END