[Swan-commit] Changes to ref refs/heads/master

[Andrew Cagney]

New commits:
commit d1b2c03dace124fc26bc274c43988ec8f907bf12
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Apr 7 21:43:49 2020 -0400

    tcp: add --impair tcp-use-blocking-write work-around; test
    
    Some kernels require blocking writes when "espintcp".