Re: [PATCH v2 02/19] exportfs: support idmapped mounts

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On Wed, Mar 30, 2022 at 06:08:16PM +0200, Christoph Hellwig wrote:
> On Wed, Mar 30, 2022 at 06:04:48PM +0200, Christian Brauner wrote:
> > > This probably wants a Fixes tag, as without it NFS exporting idmapped
> > > file will give slightly unexpected results.
> > 
> > I made it so that the nfs kernel server will refuse to be mounted on top
> > of idmapped mounts in check_export() similar to what I did originally do
> > for overlayfs. It's unclear what the Fixes: tag would be so I'll just Cc
> > stable.
> 
> So knfsd is fine, and the handle_to_name syscall doesn't ever do the
> equivalent of the subtree check.  So with that we probably don't need
> a Fixes tag - sorry for the noise.

No worries, thank you for taking a close look!



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