Re: [RFC][PATCH] nfsd regression since delayed fput()

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On Wed, Oct 16, 2013 at 09:48:06PM -0700, Linus Torvalds wrote:
> On Wed, Oct 16, 2013 at 11:52 AM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
> >
> > If anybody has better ideas, I'll gladly take those instead - this
> > approach feels kludgy ;-/
> 
> It looks kludgy indeed, but I do like the concept of basically
> rate-limiting delayed_fput_work.
> 
> At the same time, I worry that it will cause the same kinds of things
> that we discussed for user processes: delayed fput can result in
> visible semantic differences (eg silly-renames) if it is delayed past
> other operations that care about elevated reference counts.
> 
> Now I hope that people don't nfs-(re)export nfs filesystems, so the
> nfs silly-rename isn't necessarily an issue, but I could imagine other
> similar things.

NFS isn't exportable and there aren't any plans to change that.

--b.
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