DM_DEV_RENAME_CMD 1677 drivers/md/dm-ioctl.c {DM_DEV_RENAME_CMD, IOCTL_FLAGS_ISSUE_GLOBAL_EVENT, dev_rename}, DM_DEV_RENAME_CMD 257 include/uapi/linux/dm-ioctl.h #define DM_DEV_RENAME _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD, struct dm_ioctl)