[RFC PATCH 2/3] add statmnt(2) syscall

[Christian Brauner]

> So to be clear about your proposal: .mnt_root and .mountpoint are
> initialized by the caller to buffers that the kernel can copy paths
> into?

Yeah, u64 pointer to a buffer and a size (see e.g., @set_tid and
@set_tid_size for struct clone_args, @log_buf and @log_size and other
args in there).

> 
> If there's an overflow (one of the buffers was too small) the syscall
> returns -EOVERFLOW?

Yeah, I mean we have to make some things their problem.

To me that is an acceptable compromise.