Re: [RFC] F_SETLEASE mess

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On Fri, Jul 05, 2013 at 05:46:19PM -0400, Jeff Layton wrote:
> I think the bigger issue though is that looking at refcounts in order to
> determine when we have a conflicting open is just plain wrong. There are
> all sorts of reasons one might see a raised refcount that don't involve
> conflicting opens (Al's stat() example for instance). It seems like we
> ought to shoot for a solution that doesn't rely (solely) on inode and
> dentry refcounts.

Note that NFSv4 write delegations will need to affect stat as well.
(Once you let a client perform writes locally, that client becomes the
authority on the attributes, so we have to call back to it on stat.)

--b.
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