Re: [PATCH v3 2/5] zero-filled pages awareness

From: Greg Kroah-Hartman
Date: Mon Mar 18 2013 - 20:49:13 EST

On Fri, Mar 15, 2013 at 10:34:17AM +0800, Wanpeng Li wrote:
> Compression of zero-filled pages can unneccessarily cause internal
> fragmentation, and thus waste memory. This special case can be
> optimized.
> This patch captures zero-filled pages, and marks their corresponding
> zcache backing page entry as zero-filled. Whenever such zero-filled
> page is retrieved, we fill the page frame with zero.
> Acked-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
> Signed-off-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>

This patch applies with a bunch of fuzz, meaning it wasn't made against
the latest tree, which worries me. Care to redo it, and the rest of the
series, and resend it?


greg k-h
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