From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: clameter@sgi.com
Cc: akpm@linux-foundation.org, linux-mm@kvack.org, mel@csn.ul.ie,
wli@holomorphy.com
Subject: Re: [patch 0/6] Compound Page Enhancements
Date: Fri, 25 May 2007 17:05:33 +0900 [thread overview]
Message-ID: <20070525170533.2987b7b2.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <20070525051716.030494061@sgi.com>
On Thu, 24 May 2007 22:17:16 -0700
clameter@sgi.com wrote:
> This patch enhances the handling of compound pages in the VM. It may also
> be important also for the antifrag patches that need to manage a set of
> higher order free pages and also for other uses of compound pages.
>
> For now it simplifies accounting for SLUB pages but the groundwork here is
> important for the large block size patches and for allowing to page migration
> of larger pages. With this framework we may be able to get to a point where
> compound pages keep their flags while they are free and Mel may avoid having
> special functions for determining the page order of higher order freed pages.
> If we can avoid the setup and teardown of higher order pages then allocation
> and release of compound pages will be faster.
>
Keeping "free high order page" as "free compound page" in free_area[]-> and
avoid calling prep_compound_page() in page allocation ?
-Kame
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next prev parent reply other threads:[~2007-05-25 8:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-25 5:17 clameter
2007-05-25 5:17 ` [patch 1/6] Compound page handling enhancements clameter
2007-05-25 5:17 ` [patch 2/6] compound pages: Add new support functions clameter
2007-05-25 5:17 ` [patch 3/6] compound pages: vmstat support clameter
2007-05-25 5:17 ` [patch 4/6] compound pages: Use new compound vmstat functions in SLUB clameter
2007-05-25 5:17 ` [patch 5/6] compound pages: Allow use of get_page_unless_zero with compound pages clameter
2007-05-25 5:17 ` [patch 6/6] compound pages: Allow freeing of compound pages via pagevec clameter
2007-05-25 6:00 ` [patch 0/6] Compound Page Enhancements Andrew Morton
2007-05-25 13:54 ` Christoph Lameter
2007-05-25 14:03 ` Christoph Lameter
2007-05-25 17:14 ` Andrew Morton
2007-05-25 18:56 ` Christoph Lameter
2007-05-25 8:05 ` KAMEZAWA Hiroyuki [this message]
2007-05-25 13:42 ` Christoph Lameter
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