DM_TABLE_DEPS_CMD 1684 drivers/md/dm-ioctl.c 		{DM_TABLE_DEPS_CMD, 0, table_deps},
DM_TABLE_DEPS_CMD  265 include/uapi/linux/dm-ioctl.h #define DM_TABLE_DEPS    _IOWR(DM_IOCTL, DM_TABLE_DEPS_CMD, struct dm_ioctl)