linux-kernel - Re: lguest, Re: -mm merge plans for 2.6.23

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Message-ID: <46960C27.5040803@qumranet.com>
Date:	Thu, 12 Jul 2007 14:10:31 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, hch@....de,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: lguest, Re: -mm merge plans for 2.6.23

Rusty Russell wrote:
> Remove export of __put_task_struct, and usage in lguest
>
> lguest takes a reference count of tasks for two reasons.  The first is
> bogus: the /dev/lguest close callback will be called before the task
> is destroyed anyway, so no need to take a reference on open.
>
>   

What about

  Open /dev/lguest
  transfer fd using SCM_RIGHTS (or clone()?)
  close fd in original task
  exit()

?

My feeling is that if you want to be bound to a task, not a file, you 
need to use syscalls, not ioctls.

-- 
error compiling committee.c: too many arguments to function

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