librbd: AioCompletion shouldn't hold its lock during callback

The callback routine most likely will attempt to retrieve the result
code, which will result in a recursive lock attempt.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/librbd/AioCompletion.cc b/src/librbd/AioCompletion.cc
index 40dbc0aa08133eb5e5963ed025e2da28c8244994..ec7f6846ffb4c476612184f984c65120a2e34e32 100644 (file)
--- a/src/librbd/AioCompletion.cc
+++ b/src/librbd/AioCompletion.cc
@@ -89,7 +89,9 @@ namespace librbd {
     }
 
     if (complete_cb) {
+      lock.Unlock();
       complete_cb(rbd_comp, complete_arg);
+      lock.Lock();
     }
     done = true;
     cond.Signal();