Move bio completion out of dm_rh_mark_nosync in preparation for the
next patch.
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Reviewed-by: NTakahiro Yasui <tyasui@redhat.com>
Tested-by: NTakahiro Yasui <tyasui@redhat.com>
Signed-off-by: NAlasdair G Kergon <agk@redhat.com>