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

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Date:	Thu, 27 Sep 2012 17:00:53 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	Al Viro <viro@...iv.linux.org.uk>
CC:	Cyrill Gorcunov <gorcunov@...nvz.org>,
	James Bottomley <jbottomley@...allels.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...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" <aneesh.kumar@...ux.vnet.ibm.com>,
	"bfields@...ldses.org" <bfields@...ldses.org>
Subject: Re: [patch 1/7] procfs: Add ability to plug in auxiliary fdinfo providers

On 09/17/2012 10:18 PM, Cyrill Gorcunov wrote:
> 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?

Al, we'd appreciate if you share your plans about this series. Please.

> (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).
> .
> 

Thanks,
Pavel
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