DM_ULOG_REQUEST_MASK  211 drivers/md/dm-log-userspace-transfer.c 	tfr->request_type = request_type & DM_ULOG_REQUEST_MASK;
DM_ULOG_REQUEST_MASK  385 include/uapi/linux/dm-log-userspace.h 	(DM_ULOG_REQUEST_MASK & (request_type))