Fix bugs in mkdir
Fix bugs in mkdir

cloudcopy/seahub,Chilledheart/seahub,Chilledheart/seahub,cloudcopy/seahub,cloudcopy/seahub,miurahr/seahub,madflow/seahub,Chilledheart/seahub,miurahr/seahub,miurahr/seahub,madflow/seahub,Chilledheart/seahub,cloudcopy/seahub,miurahr/seahub,madflow/seahub,Chilledheart/seahub,madflow/seahub,madflow/seahub