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Rick Macklem
290e563166
This internet draft (which is close to being an RFC) specifies a new NFSv4.2 attribute which tells the NFSv4.2 client to not cache file data. (Similar to O_DIRECT, but triggered by this attribute set on the file on the NFSv4.2 server and not by the application's open(2).) https://datatracker.ietf.org/doc/draft-ietf-nfsv4-uncacheable-files/ This patch adds a new chflags(1) flag called UF_NOCACHE to implement this. Patches for NFS and ZFS will be done separately. This is a redo of the patch, with a requested name change and a #ifdef in strtofflags.c so that it doesn't break some Linux cross build. The name change was requested by fuz@. Reviewed by: kib (earlier version) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D58181