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SubjectRe: Upcoming: Notifications, FS notifications and fsinfo()
On Thu, Apr 2, 2020 at 5:23 PM David Howells <dhowells@redhat.com> wrote:
>
> Miklos Szeredi <miklos@szeredi.hu> wrote:
>
> > > > Not sure what you mean. I think it shows precisely the information
> > > > Karel asked for.
> > >
> > > It's not atomic.
> >
> > Yes it is.
>
> No, it really isn't - though it could be made so.
>
> ext4_show_mount(), for example, doesn't lock against "mount -o remount", so
> the configuration can be changing whilst it's being rendered to text.

Does s_umount nest inside namespace_sem? I really don't see the
relation of those locks.

Thanks,
Miklos

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