inuse_sum 986 block/blk-iocost.c u32 inuse_sum = READ_ONCE(parent->child_inuse_sum); inuse_sum 991 block/blk-iocost.c if (!active_sum || !inuse_sum) inuse_sum 997 block/blk-iocost.c inuse_sum = max(inuse, inuse_sum); inuse_sum 998 block/blk-iocost.c hwi = hwi * inuse / inuse_sum; /* max 16bits * 10000 */