Symbol: UBLK_IO_F_NEED_REG_BUF
drivers/block/ublk_drv.c
1593
iod->op_flags |= UBLK_IO_F_NEED_REG_BUF;
tools/testing/selftests/ublk/kublk.h
319
return !!(iod->op_flags & UBLK_IO_F_NEED_REG_BUF);