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Subject: Re: [PATCH 2/3] mm: fix possible incorrect return value of
 migrate_pages() syscall
References: <1342455272-32703-1-git-send-email-js1304@gmail.com>
 <1342455272-32703-2-git-send-email-js1304@gmail.com>
 <87394rr4dl.fsf@erwin.mina86.com>
 <CAAmzW4OZZgPKrffdvMmEgpzF=7C9mJTkEhBfjJ5G7Q15xLzv2g@mail.gmail.com>
Date: Tue, 17 Jul 2012 15:02:31 +0200
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From: "Michal Nazarewicz" <mina86@mina86.com>
Message-ID: <op.whlc6hjn3l0zgt@mpn-glaptop>
In-Reply-To: <CAAmzW4OZZgPKrffdvMmEgpzF=7C9mJTkEhBfjJ5G7Q15xLzv2g@mail.gmail.com>
Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Michal Nazarewicz <mina86@tlen.pl>, JoonSoo Kim <js1304@gmail.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sasha Levin <levinsasha928@gmail.com>, Christoph
 Lameter <cl@linux.com>

On Mon, 16 Jul 2012 19:59:18 +0200, JoonSoo Kim <js1304@gmail.com> wrote=
:

> 2012/7/17 Michal Nazarewicz <mina86@tlen.pl>:
>> Joonsoo Kim <js1304@gmail.com> writes:
>>> do_migrate_pages() can return the number of pages not migrated.
>>> Because migrate_pages() syscall return this value directly,
>>> migrate_pages() syscall may return the number of pages not migrated.=

>>> In fail case in migrate_pages() syscall, we should return error valu=
e.
>>> So change err to -EIO
>>>
>>> Additionally, Correct comment above do_migrate_pages()
>>>
>>> Signed-off-by: Joonsoo Kim <js1304@gmail.com>
>>> Cc: Sasha Levin <levinsasha928@gmail.com>
>>> Cc: Christoph Lameter <cl@linux.com>
>>
>> Acked-by: Michal Nazarewicz <mina86@mina86.com>
>
> Thanks.
>
> When I resend with changing -EIO to -EBUSY,
> could I include "Acked-by: Michal Nazarewicz <mina86@mina86.com>"?

Sure thing.

-- =

Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=3D./ `o
..o | Computer Science,  Micha=C5=82 =E2=80=9Cmina86=E2=80=9D Nazarewicz=
    (o o)
ooo +----<email/xmpp: mpn@google.com>--------------ooO--(_)--Ooo--

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