linux-kernel - Re: [PATCH] nextfd(2)

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Message-ID: <20120401213013.GA4408@p183.telecom.by>
Date:	Mon, 2 Apr 2012 00:30:13 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"drepper@...il.com" <drepper@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] nextfd(2)

On Sun, Apr 01, 2012 at 05:58:53PM +0400, Konstantin Khlebnikov wrote:
> Alexey Dobriyan wrote:

> > So, don't add closefrom(2), add nextfd(2).
> >
> > 	int nextfd(int fd)
> 
> Can we add "pid" argument to be able to search next fd in other task?
> Together with sys_kcmp() this will be very useful for checkpoint/restore.

You've added /proc/*/map_files for C/R making proc mandatory,
so you do have /proc/*/fd .
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