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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260113-mondlicht-raven-82fc4eb70e9d@brauner> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: A2043180003 X-Stat-Signature: ytzz5q5jdy8ej6azkj3wj3neinjrxjkw X-Rspam-User: X-HE-Tag: 1768316126-636403 X-HE-Meta: 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 aJSvCAi1 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jan 13, 2026 at 09:54:15AM +0100, Christian Brauner wrote: > I don't think we want to expose cgroupfs via NFS that's super weird. > It's like remote partial resource management and it would be very > strange if a remote process suddenly would be able to move things around > in the cgroup tree. So I would prefer to not do this. > > So my preference would be to really sever file handles from the export > mechanism so that we can allow stuff like pidfs and nsfs and cgroupfs to > use file handles via name_to_handle_at() and open_by_handle_at() without > making them exportable. I don't understand this discussion. If someone really wants to expose say cgroupfs to the network they'll find a way, be that using a userspace nfs server, samba, 9p or a custom fuse thing. What's the benefit of explicitly prohibiting a knfsd export? (not that I think any of this makes much sense to start with)