daemon/daemon_devicemapper.go - third_party/github.com/moby/moby - Git at Google

 // +build !exclude_graphdriver_devicemapper

 package daemon

 import (
 	_ "github.com/docker/docker/daemon/graphdriver/devmapper"
 )
	// +build !exclude_graphdriver_devicemapper

	package daemon

	import (
	_ "github.com/docker/docker/daemon/graphdriver/devmapper"
	)