dm snapshot: rename exception_table to dm_exception_table

Rename exception_table for broader use outside dm-snap.c

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
1 file changed