On Thu, Aug 21, 2025 at 03:27:26PM +0400, Askar Safin wrote: > man open_tree says: > > mount propagation > > (as described in > > .BR mount_namespaces (7)) > > will not be applied to bind-mounts created by > > .BR open_tree () > > until the bind-mount is attached with > > .BR move_mount (2), > > It seems this is wrong, because this commit exists: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=06b1ce966e3f8bfef261c111feb3d4b33ede0cd8 . > I'm not sure about this. (I didn't test this.) No, it's correct. I reverted this because it broke userspace that relies on this behavior.