daemon/graphdriver/register/register_btrfs.go - third_party/github.com/moby/moby - Git at Google

 // +build !exclude_graphdriver_btrfs,linux

 package register

 import (
 	// register the btrfs graphdriver
 	_ "github.com/docker/docker/daemon/graphdriver/btrfs"
 )
	// +build !exclude_graphdriver_btrfs,linux

	package register

	import (
	// register the btrfs graphdriver
	_ "github.com/docker/docker/daemon/graphdriver/btrfs"
	)