From: Johannes Weiner <hannes@cmpxchg.org>
To: Simon Jeons <simon.jeons@gmail.com>
Cc: Raymond Jennings <shentino@gmail.com>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: Swap defragging
Date: Tue, 12 Mar 2013 13:03:39 -0400 [thread overview]
Message-ID: <20130312170339.GD1953@cmpxchg.org> (raw)
In-Reply-To: <513D4B5E.6050601@gmail.com>
On Mon, Mar 11, 2013 at 11:11:26AM +0800, Simon Jeons wrote:
> Hi Johannes,
> On 03/08/2013 10:35 AM, Johannes Weiner wrote:
> >On Thu, Mar 07, 2013 at 06:07:23PM -0800, Raymond Jennings wrote:
> >>Just a two cent question, but is there any merit to having the kernel
> >>defragment swap space?
> >That is a good question.
>
> One question here:
>
> The comments of setup_swap_extents:
> An ordered list of swap extents is built at swapon time and is then
> used at swap_writepage/swap_readpage tiem for locating where on disk
> a page belongs.
> But I didn't see any handle of swap extents in
> swap_writepage/swap_readpage, why?
This is not the right place for such questions. If you are interested
in how the kernel works, buy a book, read the code, consult the kernel
newbies project if you get stuck.
Also, the answer to your question is within a few lines of each other
in that same code file. Make an effort.
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next prev parent reply other threads:[~2013-03-12 17:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-08 2:07 Swap defragging Raymond Jennings
2013-03-08 2:35 ` Johannes Weiner
2013-03-08 3:01 ` Raymond Jennings
2013-03-09 2:00 ` Will Huck
2013-03-12 16:52 ` Johannes Weiner
2013-03-13 0:46 ` Will Huck
2013-03-13 1:31 ` Will Huck
2013-03-11 2:54 ` Ric Mason
2013-03-12 16:53 ` Johannes Weiner
2013-03-11 3:11 ` Simon Jeons
2013-03-12 17:03 ` Johannes Weiner [this message]
2013-03-11 3:16 ` Jaegeuk Hanse
2013-03-12 17:08 ` Johannes Weiner
2013-03-13 3:47 ` Jaegeuk Hanse
2013-03-11 6:24 ` Will Huck
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