Re: [PATCH v2 5/7] rust: file: add `Kuid` wrapper

[Kent Overstreet]

On Fri, Dec 08, 2023 at 08:43:19AM -0800, Boqun Feng wrote:
> On Fri, Dec 08, 2023 at 04:40:09PM +0000, Benno Lossin wrote:
> > On 12/6/23 12:59, Alice Ryhl wrote:
> > > +    /// Returns the given task's pid in the current pid namespace.
> > > +    pub fn pid_in_current_ns(&self) -> Pid {
> > > +        // SAFETY: Calling `task_active_pid_ns` with the current task is always safe.
> > > +        let namespace = unsafe { bindings::task_active_pid_ns(bindings::get_current()) };
> > 
> > Why not create a safe wrapper for `bindings::get_current()`?
> > This patch series has three occurrences of `get_current`, so I think it
> > should be ok to add a wrapper.
> > I would also prefer to move the call to `bindings::get_current()` out of
> > the `unsafe` block.
> 
> FWIW, we have a current!() macro, we should use it here.

Why does it need to be a macro?