1*4882a593SmuzhiyunWhat: tcp_dma_copybreak sysctl 2*4882a593SmuzhiyunDate: Removed in kernel v3.13 3*4882a593SmuzhiyunContact: Dan Williams <dan.j.williams@intel.com> 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun Formerly the lower limit, in bytes, of the size of socket reads 6*4882a593Smuzhiyun that will be offloaded to a DMA copy engine. Removed due to 7*4882a593Smuzhiyun coherency issues of the cpu potentially touching the buffers 8*4882a593Smuzhiyun while dma is in flight. 9