A 3-part patchset that (a) improves current RDS-TCP perfAcked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
by 2X-3X and (b) refactors earlier robustness code for
Patch 1 is an enhancment of earlier robustness fixes
that had used separate sockets for client and server endpoints to
resolve race conditions. It is possible to have an equivalent
solution that does not use 2 sockets. The benefit of a
single socket solution is that it results in more predictable
and observable behavior for the underlying TCP pipe of an
Patches 2 and 3 are simple, straightforward perf bug fixes
that align the RDS TCP socket with other parts of the kernel stack.
v2: fix kbuild-test-robot warnings, comments from Sergei Shtylov
and Santosh Shilimkar.