From mboxrd@z Thu Jan  1 00:00:00 1970
From: Artem Bityutskiy <dedekind1@gmail.com>
Subject: Re: [PATCH v4] mtd: Do not corrupt backing device of device node
 inode
Date: Thu, 06 May 2010 09:39:19 +0300
Message-ID: <1273127959.3702.200.camel@localhost>
References: <1273074054-11849-1-git-send-email-kirill@shutemov.name>
Reply-To: dedekind1@gmail.com
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Cc: David Woodhouse <dwmw2@infradead.org>, Jan Kara <jack@suse.cz>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	David Howells <dhowells@redhat.com>,
	Alexander Shishkin <virtuoso@slind.org>,
	linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	stable@kernel.org, linux-kernel@vger.kernel.org
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <1273074054-11849-1-git-send-email-kirill@shutemov.name>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

On Wed, 2010-05-05 at 18:40 +0300, Kirill A. Shutemov wrote:
> We cannot modify file->f_mapping->backing_dev_info, because it will c=
orrupt
> backing device of device node inode, since file->f_mapping is equal t=
o
> inode->i_mapping (see __dentry_open() in fs/open.c).
>=20
> Let's introduce separate inode for MTD device with appropriate backin=
g
> device.
>=20
> Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
> ---
> Changelog:
>  v3 -> v4:
>   - Use igrab() instead of __iget inside the inode_lock;
>   - Add stable@ to CC list.
>  v2 -> v3:
>   - Rebase to mtd-2.6.git.
>  v1 -> v2:
>   - Fix error handling based on comments by Jan Kara.

Pushed to l2-mtd-2.6.git / dunno

Also added Jan's ack which disappeared in v4

--=20
Best Regards,
Artem Bityutskiy (=D0=90=D1=80=D1=82=D1=91=D0=BC =D0=91=D0=B8=D1=82=D1=8E=
=D1=86=D0=BA=D0=B8=D0=B9)