[PATCH v4] mtd: Do not corrupt backing device of device node inode

[Artem Bityutskiy]

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 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 at 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

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)