this_rq_wait_ns 1286 block/blk-iocost.c u64 this_rq_wait_ns; this_rq_wait_ns 1298 block/blk-iocost.c this_rq_wait_ns = READ_ONCE(stat->rq_wait_ns); this_rq_wait_ns 1299 block/blk-iocost.c rq_wait_ns += this_rq_wait_ns - stat->last_rq_wait_ns; this_rq_wait_ns 1300 block/blk-iocost.c stat->last_rq_wait_ns = this_rq_wait_ns;