From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Mackerras <paulus@samba.org>
Date: Fri, 21 Jan 2005 22:29:43 +0000
Subject: Re: Extend clear_page by an order parameter
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To: Christoph Lameter <clameter@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>, Hugh Dickins <hugh@veritas.com>, akpm@osdl.org, linux-ia64@vger.kernel.org, torvalds@osdl.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org

Christoph Lameter writes:

> The zeroing of a page of a arbitrary order in page_alloc.c and in hugetlb.c may benefit from a
> clear_page that is capable of zeroing multiple pages at once (and scrubd
> too but that is now an independent patch). The following patch extends
> clear_page with a second parameter specifying the order of the page to be zeroed to allow an
> efficient zeroing of pages. Hope I caught everything....

Wouldn't it be nicer to call the version that takes the order
parameter "clear_pages" and then define clear_page(p) as
clear_pages(p, 0) ?

Paul.