io_uring: remove unnecessary barrier before reading SQ tail [Linux 5.1]

This Linux kernel change "io_uring: remove unnecessary barrier before reading SQ tail" is included in the Linux 5.1 release. This change is authored by Stefan B├╝hler <source [at] stbuehler.de> on Wed Apr 24 23:54:20 2019 +0200. The commit for this change in Linux stable tree is 82ab082 (patch). io_uring: remove unnecessary barrier before reading SQ […]