Re: [PATCH -mm] mm: Unify pte_to_pgoff and pgoff_to_pte helpers

From: Andrew Morton
Date: Wed Aug 14 2013 - 03:36:06 EST


On Wed, 14 Aug 2013 00:31:12 -0700 "H. Peter Anvin" <hpa@xxxxxxxxx> wrote:

> On 08/14/2013 12:24 AM, Cyrill Gorcunov wrote:
> > On Wed, Aug 14, 2013 at 12:22:37AM -0700, H. Peter Anvin wrote:
> >> On 08/14/2013 12:00 AM, Cyrill Gorcunov wrote:
> >>> +#define pte_bfop(v,r,m,l) ((((v) >> (r)) & (m)) << (l))
> >>
> >> "bfop"?
> >
> > B_it_F_ield_OP_eration, Peter I don't mind to use any other
> > name, this was just short enough to type.
> >
>
> I think it would be useful to have a comment what it means and what
> v,r,m,l represent.

Can it be written in C with types and proper variable names and such
radical stuff?

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