linux-kernel - Re: [PATCH 0/5] Allow more than PAGESIZE data read in configfs

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Message-Id: <1161026675.6389.128.camel@linuxchandra>
Date:	Mon, 16 Oct 2006 12:24:35 -0700
From:	Chandra Seetharaman <sekharan@...ibm.com>
To:	Joel Becker <Joel.Becker@...cle.com>
Cc:	Andrew Morton <akpm@...l.org>, Greg KH <greg@...ah.com>,
	ckrm-tech@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] Allow more than PAGESIZE data read in configfs

On Sat, 2006-10-14 at 13:10 -0700, Joel Becker wrote:
> On Sat, Oct 14, 2006 at 12:43:51PM -0700, Andrew Morton wrote:
> > On Sat, 14 Oct 2006 01:01:07 -0700
> > Greg KH <greg@...ah.com> wrote:
> > > Argh!!!!
> > > 
> > > Are you going to honestly tell me you have a single attribute in sysfs
> > > that is larger than PAGE_SIZE?
> > 
> > He does not.  It's a matter of reusing existing facilities rather than
> > impementing similar things in multiple places.  The equivalent patch in
> > configfs removed a decent amount of code:
> 
> 	Issues of PAGE_SIZE and attribute size aside, the patch posted
> was incorrect.  While they used seq_file, they implemented it in a

I do not think it is incorrect. It provides a simplest interface to
configfs's clients.

> completely inefficent fashion, filling the entire buffer in one ->show()
> call rather than letting multiple read(2) calls iterate their list.

So, are you suggesting that we should provide a generic seq_operations
interface to configfs's clients ?
 
> 
> Joel
> 
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@...ibm.com   |      .......you may get it.
----------------------------------------------------------------------


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