Update device-mapper MAINTAINERS entry to mention quilt working tree location
and persistent-data subdirectory.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 S:     Maintained
 
 DEVICE-MAPPER  (LVM)
-P:     Alasdair Kergon
+M:     Alasdair Kergon <agk@redhat.com>
+M:     dm-devel@redhat.com
 L:     dm-devel@redhat.com
 W:     http://sources.redhat.com/dm
 Q:     http://patchwork.kernel.org/project/dm-devel/list/
+T:     quilt http://people.redhat.com/agk/patches/linux/editing/
 S:     Maintained
 F:     Documentation/device-mapper/
 F:     drivers/md/dm*
+F:     drivers/md/persistent-data/
 F:     include/linux/device-mapper.h
 F:     include/linux/dm-*.h