Re: [PATCH v4 5/6] add listmount(2) syscall

[Christian Brauner]

> Why use struct __mount_arg (or struct mnt_id_req :) here rather than
> just passing in the mount ID directly?  You don't use the request_mask

Please see Arnd's detailed summary here:
https://lore.kernel.org/lkml/44631c05-6b8a-42dc-b37e-df6776baa5d4@xxxxxxxxxxxxxxxx