On Tue, Nov 17, 2020 at 04:54:33PM -0700, Jonathan Corbet wrote:

On Sun, 15 Nov 2020 11:36:39 +0100
Christian Brauner [off-list ref] wrote:

One quick question...

quoted

I have written a simple tool available at
https://github.com/brauner/mount-idmapped that allows to create idmapped
mounts so people can play with this patch series.

I spent a while looking at that tool.  When actually setting the namespace
for the mapping, it uses MOUNT_ATTR_SHIFT rather than MOUNT_ATTR_IDMAP.
The value is the same, so I expect it works...:)  But did that perhaps not
get updated to reflect a name change?

Yep, that was my mistake. I'll fix it up in the repo for that tool now
and maybe improve it a little too! :)

Christian