Steve French wrote: If that is the case (ie that cifs and nfs never need to set these over tcp - I am still having trouble reconciling that with the NFS guys' comments that they must set rcvbuf (and Jim's comment below) If you have an application that wants to read a big chunk of data from a socket, and won't remove any of that data from the socket until the entire chunk has arrived, then the application must set the receive socket buffer size big enough to hold the entire chunk. Otherwise the application will stall. As far as I can tell, the corresponding situation does not hold for send buffers, because the tcp layer will grow the send buffer to be big enough to hold whatever the application wants to send. But I don't know if that's always true, or if there is some limit, so to be safe our NFS patch continues to set both the receive and send buffer sizes. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html