From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Matt Mackall <mpm@selenic.com>
Cc: Dave Hansen <haveblue@us.ibm.com>,
akpm@linux-foundation.org, 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: Tue, 25 Sep 2007 15:19:41 +0800 [thread overview]
Message-ID: <390704784.02057@ustc.edu.cn> (raw)
Message-ID: <20070925071941.GC7862@mail.ustc.edu.cn> (raw)
In-Reply-To: <20070924220202.GK19691@waste.org>
On Mon, Sep 24, 2007 at 05:02:02PM -0500, Matt Mackall wrote:
> I think Fengguang is just thinking forward to the next logical step
> here which is "expose what's in the page cache". Which means being
I have been doing it for a long time - that's the filecache patch I
sent you. However it's not quite ready for a public review.
> able to go from page back to device:inode:offset or (better, but
> trickier) path:offset.
It's doing the other way around - a top-down way.
First, you get a table of all cached inodes with the following fields:
device-number inode-number file-path cached-page-count status
Then, one can query any file he's interested in, and list all its
cached pages in the following format:
index length page-flags reference-count
(Sorry, it's the same format I have proposed in the pmaps interface.)
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next prev parent reply other threads:[~2007-09-25 7:19 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
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 [this message]
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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