This is a very poor concept for topic. As a former jungle main, and now I top main, I've been there for both of these sides.
First off, why lane gank top? sure, you can maybe get a kill, or a flash, but you also have to realize that it will take AT MINIMUM 45 seconds for the lane to reset far enough to get an effective gank. in 45 seconds, I could do 2-3 jungle camps, equaling close to 200 gold. So unless the jungler gets the kill, it's very inefficient for him. If you just want pressure, then literally just have the jungler walk up to the lane, where the enemy can plainly see him, and make him worry about a dive, and force him to back off, but dont actually dive. Instead he can help you get damage on their turret.
Now, as for the top lane perspective.
Yeah, come lane gank me, I would appreciate it. BUT I also know it's a HUGE inconvenience for you, and in solo que it's a very small chance of a pay off. But while you're here, to try and lane gank, I'm mot likely going to miss cs to try and avoid keeping it pushed, and while you're here you're going to be leeching exp off of me, so it actually hurts me if we dont get something. Also, if their top laner is any good at all, he will notice that youre trying to reset the wave suddenly after pushing him in so hard, and will think to himself, "hmm, hes trying to reset it after pushing me in for 4 minutes straight....somethings up"