linux-kernel - Re: [patch 1/7] procfs: Add ability to plug in auxiliary fdinfo providers

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Date:	Mon, 17 Sep 2012 22:18:10 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Al Viro <viro@...iv.linux.org.uk>,
	Pavel Emelyanov <xemul@...allels.com>,
	James Bottomley <jbottomley@...allels.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Helsley <matt.helsley@...il.com>,
	aneesh.kumar@...ux.vnet.ibm.com, bfields@...ldses.org
Subject: Re: [patch 1/7] procfs: Add ability to plug in auxiliary fdinfo
 providers

On Thu, Sep 13, 2012 at 01:29:07AM +0400, Cyrill Gorcunov wrote:
> This patch brings ability to print out auxiliary data associated
> with file in procfs interface /proc/pid/fdinfo/fd.
> 
> In particular further patches make eventfd, evenpoll, signalfd
> and fsnotify to print additional information complete enough
> to restore these objects after checkpoint.
> 
> To simplify the code we add show_fdinfo callback inside
> struct file_operations (as Al and Pavel are proposing).
> 

Hi, sorry for bothering but is there some opinions on this series?

(I've found that epoll change log has not been well refreshed and
 says that this fdinfo feature is config-checkpoint-restore dependant,
 but in real this config entry was ripped off during conversation).

So, at moment I somehow confused since it's a bit unclear where to
move, either this series is more-less acceptible or not. I could
bring back all config-checkpoint-restore dependency (since I still
believe this feature better to be enabled not by default but iif
user has asked fo it).
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