Document why we don't need to do anything in Put().
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: a1851a6d3e69d67bfc4e6bfdec85ba58293351b9
Component: engine
This is an experimental btrfs driver. To use it you must have
/var/lib/docker mounted on a btrfs filesystem and explicitly
specify DOCKER_DRIVER=btrfs in the docker daemon environment.
It works by using subvolumes for the docker image/container layers.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: e51af36a85126aca6bf6da5291eaf960fd82aa56
Component: engine
Alexander Larsson