Re: [PATCH 1/4] container_of: add container_of_const() that preserves const-ness of the pointer

[Jason Gunthorpe]

On Fri, Dec 02, 2022 at 12:50:05AM +0200, Andy Shevchenko wrote:
> On Thu, Dec 01, 2022 at 08:30:54PM +0100, Greg Kroah-Hartman wrote:
> > container_of does not preserve the const-ness of a pointer that is
> > passed into it, which can cause C code that passes in a const pointer to
> > get a pointer back that is not const and then scribble all over the data
> > in it.  To prevent this, container_of_const() will preserve the const
> > status of the pointer passed into it using the newly available _Generic()
> > method.
> > 
> > Co-developed-by: Jason Gunthorpe <jgg@xxxxxxxx>
> 
> I believe this tag requires SoB of the co-develper.

Sure, Greg you can add whatever tags are required

Did you look at possibly just calling this "container_of" ?

Thanks,
Jason