linux-kernel - Re: [PATCH 00/26] Eliminate create_proc_read

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Date:	Thu, 11 Apr 2013 12:07:28 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	David Howells <dhowells@...hat.com>
Cc:	linux-kernel@...r.kernel.org, viro@...IV.linux.org.uk
Subject: Re: [PATCH 00/26] Eliminate create_proc_read_entry() [RFC]

On Thu, Apr 11, 2013 at 02:27:40PM +0100, David Howells wrote:
> 
> Here is a series of patches to eliminate create_proc_read_entry(), replacing it
> with proc_create() and proc_create_data() and the use of seq_file facilities.
> 
> This requires file_operations structs and open methods to be provided in most
> cases, though single_open() and single_open_size() suffice for the actual
> translation into the seq_file environment.  I did try and reduce the number of
> file_operations structs and open methods added by placing the show function
> pointer into seq_file::private in some places.
> 
> Certain places (hostap most notably) required conversion of some files into
> full seq_file iterators to handle the possibility that large lists might
> overrun a single buffer full of data.
> 
> This reduces the size of the proc_dir_entry by the removal of the read_proc
> pointer, plus the support mechanisms for these have been removed from the
> procfs code.
> 
> These patches have been compile tested as best I can (apart from SH for which I
> don't have a working compiler).  No runtime testing has been done outside of
> the core procfs code as I don't have the requisite hardware.

The ones I've been cc:ed on, with the exception of the hostap patch, I
will be glad to take though my trees now, unless you want to take them
yourself?

thanks,

greg k-h
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