Re: [RFC][PATCH 2/7] kref: Add kref_read()

[Christoph Hellwig]

On Mon, Nov 14, 2016 at 06:39:48PM +0100, Peter Zijlstra wrote:
> Since we need to change the implementation, stop exposing internals.
> 
> Provide kref_read() to read the current reference count; typically
> used for debug messages.

Can we just provide a printk specifier for a kref value instead as
that is the only valid use case for reading the value?