new_sqhd 664 drivers/nvme/target/core.c u32 old_sqhd, new_sqhd; new_sqhd 668 drivers/nvme/target/core.c new_sqhd = (old_sqhd + 1) % req->sq->size; new_sqhd 669 drivers/nvme/target/core.c } while (cmpxchg(&req->sq->sqhd, old_sqhd, new_sqhd) !=