Commits on Aug 1, 2017

1. osd: pg: be more careful with locking around forced pg recovery …

   This does several little things that add up to big concurrency and safety
   improvements:
   * Switch to passing around PGRefs instead of raw pointers, which is
     generally a good idea
   * drop the pg_map_lock once we're done looking up the PGRefs, since
     we don't need it and holding the PG pointer alive was the only previous
     thing that might have made it necessary
   * don't hold the recovery_lock since we don't need any OSD-level
     synchronization
   * make sure the PG is not being deleted before we do a force-change of its
     state
   
   Fixes: http://tracker.ceph.com/issues/20808
   
   Signed-off-by: Greg Farnum <gfarnum@redhat.com>

   

   gregsfortytwo committed Aug 1, 2017
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