Details : Disconnected dentry cannot be found with lookup, so we do not need
to unhash it or make it invalid
+Severity : normal
+Bugzilla : 12123
+Description: ENOENT returned for valid filehandle during dbench.
+Details: : Check if a directory has children when invalidating dentries
+ associated with an inode during lock cancellation. This fixes
+ an incorrect ENOENT sometimes seen for valid filehandles during
+ testing with dbench.
+
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tbd Cluster File Systems, Inc. <info@clusterfs.com>