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Date:      Wed, 6 May 2026 08:11:56 -0700
From:      Rick Macklem <rick.macklem@gmail.com>
To:        FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject:   RFC: Can a new "don't cache" chflags(1) be added?
Message-ID:  <CAM5tNy4Z8W%2BY_HfBJOMZCHjubq18cAz3%2B3ZP%2BZEcQzie8kuRNg@mail.gmail.com>
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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
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