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Date: Thu, 16 Aug 2007 22:56:41 -0500
From: Matt Mackall <mpm@selenic.com>
To: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Andrew Morton <akpm@osdl.org>, Jeremy Fitzhardinge <jeremy@goop.org>,
       David Rientjes <rientjes@google.com>,
       John Berthels <jjberthels@gmail.com>,
       Nick Piggin <nickpiggin@yahoo.com.au>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] maps: /proc/<pid>/pmaps interface - memory maps in granularity of pages
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On Fri, Aug 17, 2007 at 11:44:37AM +0800, Fengguang Wu wrote:
> > I'm so-so on this. 
> 
> Not that way! It's a good thing that people have different experiences
> and hence viewpoints. Maybe the concept of PFN sharing are
> straightforward to you, while I have been playing with seq_file a lot.
> 
> > On the downside:
> > 
> > - requires lots of parsing
> > - isn't random-access
> > - probably significantly slower than pagemap
> 
> That could be true.  Maybe some user with huge datasets will give us
> some idea about the performance. I don't know, maybe it's application
> dependent.
> 
> Anyway I don't think it's fair to merge a binary interface without the
> challenge from a textual one ;)

Yes, that's why I didn't say I hated it.

-- 
Mathematics is the supreme nostalgia of our time.
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