On Tue, Jun 10, 2025 at 04:57:32PM -0400, Mike Snitzer wrote: > Add 'enable-dontcache' to NFSD's debugfs interface so that: Any data > read or written by NFSD will either not be cached (thanks to O_DIRECT) > or will be removed from the page cache upon completion (DONTCACHE). > > enable-dontcache is 0 by default. It may be enabled with: > echo 1 > /sys/kernel/debug/nfsd/enable-dontcache Having this as a global debug-only interface feels a bit odd.