From: Dave Hansen <haveblue@us.ibm.com>
To: Matt Mackall <mpm@selenic.com>
Cc: akpm@linux-foundation.org, wfg@mail.ustc.edu.cn,
balbir@linux.vnet.ibm.com, jjberthels@gmail.com,
linux-mm <linux-mm@kvack.org>
Subject: Re: + maps2-export-page-index-in-kpagemap.patch added to -mm tree
Date: Mon, 24 Sep 2007 14:23:08 -0700 [thread overview]
Message-ID: <1190668988.26982.254.camel@localhost> (raw)
In-Reply-To: <20070924205901.GI19691@waste.org>
On Mon, 2007-09-24 at 15:59 -0500, Matt Mackall wrote:
>
> If we really must do this, it'd be better to have a parallel file with
> the offsets.
Yeah, I'd much rather have a couple of files with really, really simple
and _stable_ formats than one with a more complex and variable one.
Although you can't answer the "which parts are mapped" question without
the page_index() information, you can answer the "what percentage of
this file is actively mapped" question.
Could someone elaborate a little bit more on exactly why you'd want to
know which parts of the file are mapped?
-- Dave
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next prev parent reply other threads:[~2007-09-24 20:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200709242044.l8OKi01e016834@imap1.linux-foundation.org>
2007-09-24 21:19 ` + maps2-export-page-index-in-kpagemap.patch added to -mm tree Dave Hansen
[not found] ` <20070924205901.GI19691@waste.org>
2007-09-24 21:23 ` Dave Hansen [this message]
2007-09-24 21:35 ` Matt Mackall
2007-09-24 21:50 ` Dave Hansen
2007-09-24 22:02 ` Matt Mackall
[not found] ` <20070925071941.GC7862@mail.ustc.edu.cn>
2007-09-25 7:19 ` Fengguang Wu
2007-09-25 8:17 ` Balbir Singh
[not found] ` <20070925095804.GA12549@mail.ustc.edu.cn>
2007-09-25 9:58 ` filecache: expose what's in the page cache Fengguang Wu
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