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All five wakeup call sites duplicate WaitLSNWakeup()'s internal fast-path minWaitedLSN check and add an unnecessary NULL check on waitLSNState. Remove the inline pre-checks and call WaitLSNWakeup() directly. The fast-path check inside WaitLSNWakeup() already returns early when no waiter's target has been reached, so there is no performance difference. The waitLSNState NULL checks are also unnecessary: shared memory is fully initialized before any backend or auxiliary process starts, so waitLSNState is always non-NULL at these call sites. Reported-by: Andres Freund <andres@anarazel.de> Discussion: https://postgr.es/m/jzq5shdewncpxc35r3s2mcfsmo4bjovkza5mnqf5bdfumhfi3g%40bglckf7dxmw5 Author: Xuneng Zhou <xunengzhou@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com>