ITAGAKI Takahiro <itagaki.takahiro@lab.ntt.co.jp> writes:
> Here is a small patch to prevent undesired WAL file caching by kernel.
> posix_fadvise(POSIX_FADV_DONTNEED) attempts to free cached pages and
> the kernel will discard them in preference to other data caches.
On plenty of platforms, this won't even compile ...
regards, tom lane