NR_USAGE_SLOTS 496 block/blk-iocost.c u32 usages[NR_USAGE_SLOTS]; NR_USAGE_SLOTS 1447 block/blk-iocost.c iocg->usage_idx = (iocg->usage_idx + 1) % NR_USAGE_SLOTS; NR_USAGE_SLOTS 1513 block/blk-iocost.c for (i = 0, usage = 0; i < NR_USAGE_SLOTS; i++) {