linux-kernel - Re: [patch 10/10] System z large page support.

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Message-Id: <1205360071.5237.10.camel@localhost.localdomain>
Date:	Wed, 12 Mar 2008 23:14:31 +0100
From:	Gerald Schaefer <gerald.schaefer@...ibm.com>
To:	Dave Hansen <haveblue@...ibm.com>
Cc:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org
Subject: Re: [patch 10/10] System z large page support.

On Wed, 2008-03-12 at 10:52 -0700, Dave Hansen wrote:
> > 
> > +pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
> > +{
> > +       pgd_t *pgdp;
> > +       pud_t *pudp;
> > +       pmd_t *pmdp = NULL;
> > +
> > +       pgdp = pgd_offset(mm, addr);
> > +       pudp = pud_alloc(mm, pgdp, addr);
> > +       if (pudp)
> > +               pmdp = pmd_alloc(mm, pudp, addr);
> > +       return (pte_t *) pmdp;
> > +}
> 
> That looks pretty generic.  Why can't you share with the version we
> already have?

What version do you mean? Every architecture with hugetlbfs support has
its own huge_pte_alloc() function in arch/<arch>/mm/hugetlbfs.c, and
they are all doing slightly different things.

--
Gerald Schaefer


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