This qdisc code has several inline functions for locking that is only
used when adding/deleting queuing disciplines; so make them functions
instead.  The new qdisc_lock_tree encapsulates the locking used throughout
this code.

Also qdisc_run() is only called from net/core/dev.c so it should be
defined there.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@redhat.com>