NetBSD/src Qvt2ptssys/dev/dm dm_target_error.c dm_target_zero.c

   dm: Make targets' ->sync() optional

   Apparently some targets have nothing to sync, so make it optional.
VersionDeltaFile
1.23+2-12sys/dev/dm/dm_target_error.c
1.25+2-12sys/dev/dm/dm_target_zero.c
1.31+2-6sys/dev/dm/dm_target.c
1.53+3-2sys/dev/dm/device-mapper.c
1.34+2-3sys/dev/dm/dm_target_snapshot.c
1.45+2-2sys/dev/dm/dm.h
+13-376 files

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