linux-kernel - Re: [PATCH] Install kernel-page-flags.h

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Date:	Wed, 14 Mar 2012 04:03:52 -0400
From:	Ulrich Drepper <drepper@...adia.org>
To:	Christoph Hellwig <hch@...radead.org>
CC:	arnd@...db.de, davem@...emloft.net, hverkuil@...all.nl,
	laurent.pinchart@...asonboard.com, linux-kernel@...r.kernel.org,
	mchehab@...hat.com
Subject: Re: [PATCH] Install kernel-page-flags.h

On 03/14/2012 03:58 AM, Christoph Hellwig wrote:
> I don't think this is a good idea at all.  Let's shoot the person who
> added that braindead interface ASAP, and replace it with one printing
> the flags in ASCII format.

This isn't really realistic.  The information is retrieved based on the 
PFN using lseek+read from a file descriptor.  How is the read supposed 
to work in case the record returned is not of a fixed size?  Aside, 
potentially a lot of these records are to be read and using ASCII 
strings will significantly slow things down.

If you have a concrete proposal please go ahead and propose it.
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