Re: sysfs abuse in recent i2o changes

[Greg KH <gregkh@suse.de>]

On Tue, Jun 28, 2005 at 05:02:41PM +0200, Markus Lidel wrote:
> I know, but i hopefully also have a good reason to do so... First, the 
> attributes provided through these functions are for accessing the 
> firmware... The controller has a little limitation, it could only handle 
> 64 blocks, but sysfs only have 4k...
> 
> Now there are two options:
> 
> 1) when writing: read a 64k block, merge it with the 4k block and write 
> it back, when reading: read a 64k block and only return the needed 4k block.
> 
> 2) extend the sysfs attribute to allow 64k blocks
> 
> IMHO the first is not a very good solution, because for a 64k block it 
> has to be written 16 times...
> 
> Of course if someone finds a better solution i would be glad to hear 
> about it...

Use the binary file interface of sysfs, which was written exactly for
this kind of thing. :)

thanks,

greg k-h