41d3d64e87
After the series of preceding commits introducing and using BufferBeginSetHintBits()/BufferSetHintBits16(), hint bits are not set anymore while IO is going on. Therefore we do not need to copy pages while they are being written out anymore. For the same reason XLogSaveBufferForHint() now does not need to operate on a copy of the page anymore, but can instead use the normal XLogRegisterBuffer() mechanism. For that the assertions and comments to XLogRegisterBuffer() had to be updated to allow share-exclusive locked buffers to be registered. Reviewed-by: Melanie Plageman <melanieplageman@gmail.com> Discussion: https://postgr.es/m/5ubipyssiju5twkb7zgqwdr7q2vhpkpmuelxfpanetlk6ofnop@hvxb4g2amb2d
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/.