Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Zi Yan <ziy@nvidia.com>
To:     Keith Busch <keith.busch@intel.com>
CC:     <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Mel Gorman <mgorman@techsingularity.net>
Subject: Re: [PATCH] mm: migrate: remove unused mode argument
Date:   Thu, 9 May 2019 09:22:12 -0700
Message-ID: <E467C4E8-5049-4A3A-A95C-5F921372DBE5@nvidia.com>
In-Reply-To: <20190508210301.8472-1-keith.busch@intel.com>
References: <20190508210301.8472-1-keith.busch@intel.com>
MIME-Version: 1.0
Content-Type: multipart/signed;
        boundary="=_MailMate_D55B932C-DC6B-48B0-9229-E44DA113B614_=";
        micalg=pgp-sha1; protocol="application/pgp-signature"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

--=_MailMate_D55B932C-DC6B-48B0-9229-E44DA113B614_=
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

On 8 May 2019, at 14:03, Keith Busch wrote:

> migrate_page_move_mapping() doesn't use the mode argument. Remove it
> and update callers accordingly.
>
> Signed-off-by: Keith Busch <keith.busch@intel.com>
> ---
>  fs/aio.c                | 2 +-
>  fs/f2fs/data.c          | 2 +-
>  fs/iomap.c              | 2 +-
>  fs/ubifs/file.c         | 2 +-
>  include/linux/migrate.h | 3 +--
>  mm/migrate.c            | 7 +++----
>  6 files changed, 8 insertions(+), 10 deletions(-)
>
> diff --git a/fs/aio.c b/fs/aio.c
> index 3490d1fa0e16..1a1568861b4e 100644
> --- a/fs/aio.c
> +++ b/fs/aio.c
> @@ -425,7 +425,7 @@ static int aio_migratepage(struct address_space *ma=
pping, struct page *new,
>  	BUG_ON(PageWriteback(old));
>  	get_page(new);
>
> -	rc =3D migrate_page_move_mapping(mapping, new, old, mode, 1);
> +	rc =3D migrate_page_move_mapping(mapping, new, old, 1);
>  	if (rc !=3D MIGRATEPAGE_SUCCESS) {
>  		put_page(new);
>  		goto out_unlock;
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 9727944139f2..0eb7a8cd3138 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -2801,7 +2801,7 @@ int f2fs_migrate_page(struct address_space *mappi=
ng,
>  	/* one extra reference was held for atomic_write page */
>  	extra_count =3D atomic_written ? 1 : 0;
>  	rc =3D migrate_page_move_mapping(mapping, newpage,
> -				page, mode, extra_count);
> +				page, extra_count);
>  	if (rc !=3D MIGRATEPAGE_SUCCESS) {
>  		if (atomic_written)
>  			mutex_unlock(&fi->inmem_lock);
> diff --git a/fs/iomap.c b/fs/iomap.c
> index abdd18e404f8..f26f4846a00b 100644
> --- a/fs/iomap.c
> +++ b/fs/iomap.c
> @@ -571,7 +571,7 @@ iomap_migrate_page(struct address_space *mapping, s=
truct page *newpage,
>  {
>  	int ret;
>
> -	ret =3D migrate_page_move_mapping(mapping, newpage, page, mode, 0);
> +	ret =3D migrate_page_move_mapping(mapping, newpage, page, 0);
>  	if (ret !=3D MIGRATEPAGE_SUCCESS)
>  		return ret;
>
> diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
> index 5d2ffb1a45fc..d906ebc24049 100644
> --- a/fs/ubifs/file.c
> +++ b/fs/ubifs/file.c
> @@ -1481,7 +1481,7 @@ static int ubifs_migrate_page(struct address_spac=
e *mapping,
>  {
>  	int rc;
>
> -	rc =3D migrate_page_move_mapping(mapping, newpage, page, mode, 0);
> +	rc =3D migrate_page_move_mapping(mapping, newpage, page, 0);
>  	if (rc !=3D MIGRATEPAGE_SUCCESS)
>  		return rc;
>
> diff --git a/include/linux/migrate.h b/include/linux/migrate.h
> index e13d9bf2f9a5..7f04754c7f2b 100644
> --- a/include/linux/migrate.h
> +++ b/include/linux/migrate.h
> @@ -77,8 +77,7 @@ extern void migrate_page_copy(struct page *newpage, s=
truct page *page);
>  extern int migrate_huge_page_move_mapping(struct address_space *mappin=
g,
>  				  struct page *newpage, struct page *page);
>  extern int migrate_page_move_mapping(struct address_space *mapping,
> -		struct page *newpage, struct page *page, enum migrate_mode mode,
> -		int extra_count);
> +		struct page *newpage, struct page *page, int extra_count);
>  #else
>
>  static inline void putback_movable_pages(struct list_head *l) {}
> diff --git a/mm/migrate.c b/mm/migrate.c
> index 663a5449367a..85f46bfcf141 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -397,8 +397,7 @@ static int expected_page_refs(struct address_space =
*mapping, struct page *page)
>   * 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
>   */
>  int migrate_page_move_mapping(struct address_space *mapping,
> -		struct page *newpage, struct page *page, enum migrate_mode mode,
> -		int extra_count)
> +		struct page *newpage, struct page *page, int extra_count)
>  {
>  	XA_STATE(xas, &mapping->i_pages, page_index(page));
>  	struct zone *oldzone, *newzone;
> @@ -684,7 +683,7 @@ int migrate_page(struct address_space *mapping,
>
>  	BUG_ON(PageWriteback(page));	/* Writeback must be complete */
>
> -	rc =3D migrate_page_move_mapping(mapping, newpage, page, mode, 0);
> +	rc =3D migrate_page_move_mapping(mapping, newpage, page, 0);
>
>  	if (rc !=3D MIGRATEPAGE_SUCCESS)
>  		return rc;
> @@ -783,7 +782,7 @@ static int __buffer_migrate_page(struct address_spa=
ce *mapping,
>  		}
>  	}
>
> -	rc =3D migrate_page_move_mapping(mapping, newpage, page, mode, 0);
> +	rc =3D migrate_page_move_mapping(mapping, newpage, page, 0);
>  	if (rc !=3D MIGRATEPAGE_SUCCESS)
>  		goto unlock_buffers;
>
> -- =

> 2.14.4

LGTM. Thanks. Reviewed-by: Zi Yan <ziy@nvidia.com>

--
Best Regards,
Yan Zi

--=_MailMate_D55B932C-DC6B-48B0-9229-E44DA113B614_=
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=Yv8g
-----END PGP SIGNATURE-----

--=_MailMate_D55B932C-DC6B-48B0-9229-E44DA113B614_=--