DM_TARGET_IMMUTABLE 1997 drivers/md/dm-mpath.c 	.features = DM_TARGET_SINGLETON | DM_TARGET_IMMUTABLE |
DM_TARGET_IMMUTABLE 4124 drivers/md/dm-thin.c 		    DM_TARGET_IMMUTABLE,
DM_TARGET_IMMUTABLE  224 include/linux/device-mapper.h #define dm_target_is_immutable(type)	((type)->features & DM_TARGET_IMMUTABLE)