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This moves/renames some of the functions defined in pg_numa.c: * pg_numa_get_pagesize() is renamed to pg_get_shmem_pagesize(), and moved to src/backend/storage/ipc/shmem.c. The new name better reflects that the page size is not related to NUMA, and it's specifically about the page size used for the main shared memory segment. * move pg_numa_available() to src/backend/storage/ipc/shmem.c, i.e. into the backend (which more appropriate for functions callable from SQL). While at it, improve the comment to explain what page size it returns. * remove unnecessary includes from src/port/pg_numa.c, adding unnecessary dependencies (src/port should be suitable for frontent). These were either leftovers or unnecessary thanks to the other changes in this commit. This eliminates unnecessary dependencies on backend symbols, which we don't want in src/port. Reported-by: Kirill Reshke <reshkekirill@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> https://postgr.es/m/CALdSSPi5fj0a7UG7Fmw2cUD1uWuckU_e8dJ+6x-bJEokcSXzqA@mail.gmail.com