Split use of SerialSLRULock, creating SerialControlLock
predicate.c has been using SerialSLRULock (the control lock for its SLRU
structure) to coordinate access to SerialControlData, another of its
numerous shared memory structures; this is unnecessary and confuses
further SLRU scalability work. Create a separate LWLock to cover
SerialControlData.
Extracted from a larger patch from the same author, and some additional
changes by Álvaro.
Author: Dilip Kumar
Discussion: https://postgr.es/m/CAFiTN-vzDvNz=ExGXz6gdyjtzGixKSqs0mKHMmaQ8sOSEFZ33A@mail.gmail.com
projects / postgresql.git / commit