From: Artem Bityutskiy <dedekind1@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: linux-kernel@vger.kernel.org, David Howells <dhowells@redhat.com>,
Alexander Shishkin <virtuoso@slind.org>,
linux-mtd@lists.infradead.org,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org,
"Kirill A. Shutemov" <kirill@shutemov.name>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v2] mtd: Do not corrupt backing device of device node inode
Date: Tue, 04 May 2010 17:19:17 +0300 [thread overview]
Message-ID: <1272982757.3702.16.camel@localhost> (raw)
In-Reply-To: <20100504111947.GB3398@quack.suse.cz>
On Tue, 2010-05-04 at 13:19 +0200, Jan Kara wrote:
> On Tue 04-05-10 00:32:48, Kirill A. Shutemov wrote:
> > We cannot modify file->f_mapping->backing_dev_info, because it will corrupt
> > backing device of device node inode, since file->f_mapping is equal to
> > inode->i_mapping (see __dentry_open() in fs/open.c).
> >
> > Let's introduce separate inode for MTD device with appropriate backing
> > device.
> >
> > Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
> The patch now looks correct to me. Acked-by: Jan Kara <jack@suse.cz>
>
Is this -stable material?
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
WARNING: multiple messages have this Message-ID (diff)
From: Artem Bityutskiy <dedekind1@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>,
David Woodhouse <dwmw2@infradead.org>,
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,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] mtd: Do not corrupt backing device of device node inode
Date: Tue, 04 May 2010 17:19:17 +0300 [thread overview]
Message-ID: <1272982757.3702.16.camel@localhost> (raw)
In-Reply-To: <20100504111947.GB3398@quack.suse.cz>
On Tue, 2010-05-04 at 13:19 +0200, Jan Kara wrote:
> On Tue 04-05-10 00:32:48, Kirill A. Shutemov wrote:
> > We cannot modify file->f_mapping->backing_dev_info, because it will corrupt
> > backing device of device node inode, since file->f_mapping is equal to
> > inode->i_mapping (see __dentry_open() in fs/open.c).
> >
> > Let's introduce separate inode for MTD device with appropriate backing
> > device.
> >
> > Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
> The patch now looks correct to me. Acked-by: Jan Kara <jack@suse.cz>
>
Is this -stable material?
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
next prev parent reply other threads:[~2010-05-04 14:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-03 21:32 [PATCH v2] mtd: Do not corrupt backing device of device node inode Kirill A. Shutemov
2010-05-03 21:32 ` Kirill A. Shutemov
2010-05-04 11:19 ` Jan Kara
2010-05-04 11:19 ` Jan Kara
2010-05-04 14:19 ` Artem Bityutskiy [this message]
2010-05-04 14:19 ` Artem Bityutskiy
2010-05-05 6:04 ` Artem Bityutskiy
2010-05-05 6:04 ` Artem Bityutskiy
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