2.6.39 Kernel Changes for FileSystem, get_sb removed

Abhijit Pawar apawar.linux at gmail.com
Tue Sep 20 08:13:57 EDT 2011

On 09/20/2011 05:14 PM, Abhijit Pawar wrote:
> Hi list,
> It seems that the support for get_sb function is removed from kernel 
> 2.6.39 onwards. My code which is working till 2.6.38 series is failing 
> with new kernels.
> I tried finding out but there isnt anything mentioned. So if this 
> function itself is removed then how kernel is going to find out the 
> superblock and use it?
> Are we supposed to use the mount function provided? This is what i got 
> from one of the kernel patch email.
> +[mandatory]
> +	->get_sb() is gone.  Switch to use of ->mount().  Typically it's just
> +a matter of switching from calling get_sb_... to mount_... and changing the
> +function type.  If you were doing it manually, just switch from setting ->mnt_root
> +to some pointer to returning that pointer.  On errors return ERR_PTR(...).
> diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
> It looks like there are other changes related to Pages are also done.
> Regards,
> Abhijit Pawar
I have modified the code to use the mount function and its working 
correctly.  There is one more change I noticed for struct 
address_space_operations: The sync_page is removed.

The code is working now.

Abhijit Pawar

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