RFC: Can a new "don't cache" chflags(1) be added?

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From: Rick Macklem <rick.macklem_at_gmail.com>
Date: Wed, 06 May 2026 15:11:56 UTC

Hi,

NFSv4.2 is getting a new "don't cache" attribute. It is meant to
indicate to the NFS client that it should always handle the file
as if it were open()'d with O_DIRECT.

Does adding a new flag to chflags(1) called something like
UF_DONTCACHE to support this new attribute seem
reasonable?

Thanks for any comments, rick