linux-kernel - Re: [PATCH v2] mtd: Do not corrupt backing device of device node inode

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Message-ID: <1272982757.3702.16.camel@localhost>
Date:	Tue, 04 May 2010 17:19:17 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	"Kirill A. Shutemov" <kirill@...temov.name>,
	David Woodhouse <dwmw2@...radead.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	David Howells <dhowells@...hat.com>,
	Alexander Shishkin <virtuoso@...nd.org>,
	linux-mtd@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mtd: Do not corrupt backing device of device node
 inode

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@...temov.name>
>   The patch now looks correct to me. Acked-by: Jan Kara <jack@...e.cz>
> 

Is this -stable material?

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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