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During recovery, XLogNeedsFlush() checks the minimum recovery LSN point instead of the flush LSN point. The same condition checks are used when updating the minimum recovery point in UpdateMinRecoveryPoint(), but are written in reverse order. This commit makes the order of the checks consistent between XLogNeedsFlush() and UpdateMinRecoveryPoint(), improving the code clarity. Note that the second check (as ordered by this commit) relies on InRecovery, which is true only in the startup process. So this makes XLogNeedsFlush() cheaper in the startup process with the first check acting as a shortcut while doing crash recovery, where LocalMinRecoveryPoint is an invalid LSN. Author: Melanie Plageman <melanieplageman@gmail.com> Reviewed-by: Dilip Kumar <dilipbalaut@gmail.com> Discussion: https://postgr.es/m/aMIHNRTP6Wj6vw1s%40paquier.xyz
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.