1*7bced397SDan WilliamsWhat: tcp_dma_copybreak sysctl 2*7bced397SDan WilliamsDate: Removed in kernel v3.13 3*7bced397SDan WilliamsContact: Dan Williams <dan.j.williams@intel.com> 4*7bced397SDan WilliamsDescription: 5*7bced397SDan Williams Formerly the lower limit, in bytes, of the size of socket reads 6*7bced397SDan Williams that will be offloaded to a DMA copy engine. Removed due to 7*7bced397SDan Williams coherency issues of the cpu potentially touching the buffers 8*7bced397SDan Williams while dma is in flight. 9