Too many threads created. Must optimize this.

These are the spawns:

mousetreeproc(rp, op.m, op.mc, 	t.donec, o.rc);
kbdtreeproc(rp, op.r, 			t.donec, o.rc);
updatetreeproc(t, rp, 			t.donec, o.rc);
synctreeproc(rp, 				t.donec, o.rc);
showtreeproc(rp, force, 			t.donec, o.rc);

p.fsctl
readctl(p, cc)


synctree(p, nc, depth);
updatetree(np, d, ec, depth);