nfs: use change attribute for NFS re-exports

Browse source

When exporting NFS, we may as well use the real change attribute
returned by the original server instead of faking up a change attribute
from the ctime.

Note we can't do that by setting I_VERSION--that would also turn on the
logic in iversion.h which treats the lower bit specially, and that
doesn't make sense for NFS.

So instead we define a new export operation for filesystems like NFS
that want to manage the change attribute themselves.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

...

This commit is contained in:

J. Bruce Fields 2021-01-29 14:26:29 -05:00 • committed by Chuck Lever

parent 02591f9feb

commit 3cc55f4434

3 changed files with 23 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

18

fs/nfs/export.c

View file

5

fs/nfsd/nfsfh.h

View file

1

include/linux/exportfs.h

View file