librbd: disable lockdep on AioCompletion

It is only used by clients and it causes a large slowdown
in performance due to the rate at which the lock is constructed/
destructed for each IO request.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 66e74641baeed9aadb7e474d6e6b142b7725722d)

diff --git a/src/librbd/AioCompletion.h b/src/librbd/AioCompletion.h
index 362f0e6be59675803b6a8f7b7b055658620de58b..4fe53eb80a9475f10949f8a82eda7f5d751e1d8f 100644 (file)
--- a/src/librbd/AioCompletion.h
+++ b/src/librbd/AioCompletion.h
@@ -64,7 +64,7 @@ namespace librbd {
 
     AsyncOperation async_op;
 
-    AioCompletion() : lock(unique_lock_name("AioCompletion::lock", this), true),
+    AioCompletion() : lock("AioCompletion::lock", true, false),
                      done(false), rval(0), complete_cb(NULL),
                      complete_arg(NULL), rbd_comp(NULL),
                      pending_count(0), blockers(1),