child_inuse_sum   484 block/blk-iocost.c 	u64				child_inuse_sum;
child_inuse_sum   910 block/blk-iocost.c 		parent->child_inuse_sum += (s32)(inuse - child->inuse);
child_inuse_sum   923 block/blk-iocost.c 				parent_active * parent->child_inuse_sum,
child_inuse_sum   986 block/blk-iocost.c 		u32 inuse_sum = READ_ONCE(parent->child_inuse_sum);