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

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Message-ID: <CAFqt6zbZw74s=Kqh=UgtZti_jJJ8UcCXVqBgXyG3vruRbqg9Yw@mail.gmail.com>
Date:   Fri, 11 May 2018 23:56:48 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Hugh Dickins <hughd@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        David Rientjes <rientjes@...gle.com>, mike.kravetz@...cle.com,
        n-horiguchi@...jp.nec.com,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Linux-MM <linux-mm@...ck.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm: Change return type to vm_fault_t

On Fri, May 11, 2018 at 11:45 PM, Matthew Wilcox <willy@...radead.org> wrote:
> On Fri, May 11, 2018 at 11:36:39PM +0530, Souptick Joarder wrote:
>>  mm/hugetlb.c | 2 +-
>>  mm/mmap.c    | 4 ++--
>>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> Don't we also need to convert include/linux/mm_types.h:
>
> @@ -621,7 +621,7 @@ struct vm_special_mapping {
>          * If non-NULL, then this is called to resolve page faults
>          * on the special mapping.  If used, .pages is not checked.
>          */
> -       int (*fault)(const struct vm_special_mapping *sm,
> +       vm_fault_t (*fault)(const struct vm_special_mapping *sm,
>                      struct vm_area_struct *vma,
>                      struct vm_fault *vmf);
>
> or are you leaving that for a later patch?

Ahh, I didn't realise. No I think, we can add it as part of this
patch. Will send v3.