linux-kernel - Re: [PATCH v2] powerpc: kvm: Change return type to vm_fault

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Message-ID: <CAFqt6zaRyuJLr9wt3a7dAf2Ef4-k=ONZj2fY2q+_rvXYDRss8g@mail.gmail.com>
Date:   Wed, 16 May 2018 13:24:45 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Paul Mackerras <paulus@...abs.org>
Cc:     benh@...nel.crashing.org, mpe@...erman.id.au,
        Matthew Wilcox <willy@...radead.org>, kvm-ppc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] powerpc: kvm: Change return type to vm_fault_t

On Wed, May 16, 2018 at 12:38 PM, Paul Mackerras <paulus@...abs.org> wrote:
> On Wed, May 16, 2018 at 10:11:11AM +0530, Souptick Joarder wrote:
>> On Thu, May 10, 2018 at 11:57 PM, Souptick Joarder <jrdr.linux@...il.com> wrote:
>> > Use new return type vm_fault_t for fault handler
>> > in struct vm_operations_struct. For now, this is
>> > just documenting that the function returns a
>> > VM_FAULT value rather than an errno.  Once all
>> > instances are converted, vm_fault_t will become
>> > a distinct type.
>> >
>> > commit 1c8f422059ae ("mm: change return type to
>> > vm_fault_t")
>> >
>> > Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>> > ---
>> > v2: Updated the change log
>> >
>> >  arch/powerpc/kvm/book3s_64_vio.c | 2 +-
>> >  1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
>> > index 4dffa61..346ac0d 100644
>> > --- a/arch/powerpc/kvm/book3s_64_vio.c
>> > +++ b/arch/powerpc/kvm/book3s_64_vio.c
>> > @@ -237,7 +237,7 @@ static void release_spapr_tce_table(struct rcu_head *head)
>> >         kfree(stt);
>> >  }
>> >
>> > -static int kvm_spapr_tce_fault(struct vm_fault *vmf)
>> > +static vm_fault_t kvm_spapr_tce_fault(struct vm_fault *vmf)
>> >  {
>> >         struct kvmppc_spapr_tce_table *stt = vmf->vma->vm_file->private_data;
>> >         struct page *page;
>> > --
>> > 1.9.1
>> >
>>
>> If no comment, we would like to get this patch in queue
>> for 4.18.
>
> It looks fine - I'll queue it up.
>
> Paul.

Thanks Paul :)