ceph/ceph — pull request #2893 by dillaman (2014-11-11 01:46:33+00:00)
Title: common/Readahead: use correct lock when waiting on the pending ops

Readahead was using the incorrect lock with the pending condition,
resulting in a failed assertion. It now uses the lock associated
with pending ops.

Fixes: #10045
Signed-off-by: Jason Dillaman