From: Eric Dumazet <eduma...@google.com> Date: Mon, 16 Apr 2018 10:33:34 -0700
> This patch series add mmap() support to TCP sockets for RX zero copy. > > While tcp_mmap() patch itself is quite small (~100 LOC), optimal support > for asynchronous mmap() required better SO_RCVLOWAT behavior, and a > test program to demonstrate how mmap() on TCP sockets can be used. > > Note that mmap() (and associated munmap()) calls are adding more > pressure on per-process VM semaphore, so might not show benefit > for processus with high number of threads. Great work. I can see how it is less effective without the rcvlowat fixes/tweaks. Series applied, thanks Eric!
