This is the linux model. First, discussion then front-line coders create a patch, then lieutenants review the patch and submit to their superiors who review the patch and ultimately, all patches go through Linus before being committed to kernel. This way, the style and potential issues are enforced by the most senior people that are the stewards for the code base.

Linus has deputized a few people to commit without his review, I believe.. but this is after years of working with them.