Re: [PATCH 14/28] proc: Supply an accessor for getting the data froma PDE's parent [RFC]

[Greg KH]

On Tue, Apr 16, 2013 at 07:26:46PM +0100, David Howells wrote:
> Supply an accessor function for getting the private data from the parent
> proc_dir_entry struct of the proc_dir_entry struct associated with an inode.
> 
> ReiserFS, for instance, stores the super_block pointer in the proc directory
> it makes for that super_block, and a pointer to the respective seq_file show
> function in each of the proc files in that directory.
> 
> This allows a reduction in the number of file_operations structs, open
> functions and seq_operations structs required.  The problem otherwise is that
> each show function requires two pieces of data but only has storage for one
> per PDE (and this has no release function).
> 
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> cc: Jerry Chuang <jerry-chuang@xxxxxxxxxxx>
> cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> cc: Maxim Mikityanskiy <maxtram95@xxxxxxxxx>
> cc: YAMANE Toshiaki <yamanetoshi@xxxxxxxxx>
> cc: linux-wireless@xxxxxxxxxxxxxxx
> cc: linux-scsi@xxxxxxxxxxxxxxx
> cc: devel@xxxxxxxxxxxxxxxxxxxx

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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