fs/dyn_fsync: check dyn fsync control's active prior to performing fsync ops

Signed-off-by: Paul Reioux <reioux@gmail.com>
dynamic filesync: add some cache optimizations

and clean up file format and typos

bump version to 1.1

Signed-off-by: Paul Reioux <reioux@gmail.com>
dynamic fsync: favor true case since most will be using this feature

Signed-off-by: Paul Reioux <reioux@gmail.com>