From: Andrew Morton <akpm@linux-foundation.org>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Will Deacon <will.deacon@arm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, mhocko@suse.cz,
Catalin Marinas <catalin.marinas@arm.com>,
Steve Capper <steve.capper@arm.com>
Subject: Re: [PATCH 2/3] mm: thp: Fix the update_mmu_cache() last argument passing in mm/huge_memory.c
Date: Tue, 18 Sep 2012 12:33:31 -0700 [thread overview]
Message-ID: <20120918123331.6ca5833c.akpm@linux-foundation.org> (raw)
In-Reply-To: <20120915133833.GA32398@linux-mips.org>
On Sat, 15 Sep 2012 15:38:33 +0200
Ralf Baechle <ralf@linux-mips.org> wrote:
> On Tue, Sep 11, 2012 at 05:47:15PM +0100, Will Deacon wrote:
>
> > The update_mmu_cache() takes a pointer (to pte_t by default) as the last
> > argument but the huge_memory.c passes a pmd_t value. The patch changes
> > the argument to the pmd_t * pointer.
> >
> > Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> > Signed-off-by: Steve Capper <steve.capper@arm.com>
> > Signed-off-by: Will Deacon <will.deacon@arm.com>
> > ---
> > mm/huge_memory.c | 6 +++---
> > 1 files changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> > index 57c4b93..4aa6d02 100644
> > --- a/mm/huge_memory.c
> > +++ b/mm/huge_memory.c
> > @@ -934,7 +934,7 @@ int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
> > entry = pmd_mkyoung(orig_pmd);
> > entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
> > if (pmdp_set_access_flags(vma, haddr, pmd, entry, 1))
> > - update_mmu_cache(vma, address, entry);
> > + update_mmu_cache(vma, address, pmd);
>
> Documentation/cachetlb.txt will need an update as well. Currently it says:
>
> 5) void update_mmu_cache(struct vm_area_struct *vma,
> unsigned long address, pte_t *ptep)
Yes please.
> I would prefer we introduce something like update_mmu_cache_huge_page(vma,
> address, pmd) and leave the classic update_mmu_cache() unchanged.
Why?
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next prev parent reply other threads:[~2012-09-18 19:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-11 16:47 [PATCH 0/3] Minor changes to common hugetlb code for ARM Will Deacon
2012-09-11 16:47 ` [PATCH 1/3] mm: thp: Fix the pmd_clear() arguments in pmdp_get_and_clear() Will Deacon
2012-09-11 17:12 ` Kirill A. Shutemov
2012-09-12 15:30 ` Michal Hocko
2012-09-11 16:47 ` [PATCH 2/3] mm: thp: Fix the update_mmu_cache() last argument passing in mm/huge_memory.c Will Deacon
2012-09-11 17:38 ` Kirill A. Shutemov
2012-09-12 15:40 ` Michal Hocko
2012-09-12 15:51 ` Catalin Marinas
2012-09-15 13:38 ` Ralf Baechle
2012-09-18 19:33 ` Andrew Morton [this message]
2012-09-19 9:12 ` Catalin Marinas
2012-09-19 15:53 ` Ralf Baechle
2012-09-20 12:44 ` Will Deacon
2012-09-20 19:32 ` David Miller
2012-09-11 16:47 ` [PATCH 3/3] mm: Introduce HAVE_ARCH_TRANSPARENT_HUGEPAGE Will Deacon
2012-09-11 17:41 ` Kirill A. Shutemov
2012-09-12 15:32 ` Michal Hocko
2012-09-12 18:06 ` Chris Metcalf
2012-09-12 18:10 ` Will Deacon
2012-09-13 19:05 ` Andrew Morton
2012-09-13 21:26 ` Will Deacon
2012-09-13 21:27 ` Stephen Rothwell
2012-09-13 21:40 ` Andrew Morton
2012-09-12 15:27 ` [PATCH 0/3] Minor changes to common hugetlb code for ARM Michal Hocko
2012-09-12 15:55 ` Will Deacon
2012-09-13 12:22 ` Michal Hocko
2012-09-13 0:12 ` Andrea Arcangeli
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