[PATCH] staging/lustre: avoid zero buf for the first time

[Greg Kroah-Hartman]

On Mon, Aug 22, 2016 at 04:46:04PM +0800, Shawn Lin wrote:
> We only need to zero it when repeating in order to
> avoid old garbage. Let's improve it by moving this
> before we repeat the calculation to save some cpu
> cycle.
> 
> Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>

Have you noticed a change with this in a benchmark?

If not, is it really worth it?

I need an ack from the lustre developers before taking patches like
this...

thanks,

greg k-h