linux-kernel - Re: [ 010/184] usermodehelper: introduce umh_complete(sub

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Date:	Fri, 07 Jun 2013 05:50:00 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Willy Tarreau <w@....eu>, dann frazier <dannf@...ian.org>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tejun Heo <tj@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [ 010/184] usermodehelper: introduce umh_complete(sub_info)

On Tue, 2013-06-04 at 19:21 +0200, Willy Tarreau wrote:
> 2.6.32-longterm review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Oleg Nesterov <oleg@...hat.com>
> 
> commit b3449922502f5a161ee2b5022a33aec8472fbf18 upstream
> 
> Preparation.  Add the new trivial helper, umh_complete().  Currently it
> simply does complete(sub_info->complete).
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
> Cc: Rusty Russell <rusty@...tcorp.com.au>
> Cc: Tejun Heo <tj@...nel.org>
> Cc: David Rientjes <rientjes@...gle.com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
> [dannf: Adjusted to apply to Debian's 2.6.32]

Dann's backports are mostly missing his Signed-off-by.  (We don't
usually bother with this in the Debian patch queue, but probably ought
to do so when backporting.)

Ben.

> Signed-off-by: Willy Tarreau <w@....eu>
> ---
>  kernel/kmod.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/kernel/kmod.c b/kernel/kmod.c
> index a061472..2a27d17 100644
> --- a/kernel/kmod.c
> +++ b/kernel/kmod.c
> @@ -206,6 +206,11 @@ void call_usermodehelper_freeinfo(struct subprocess_info *info)
>  }
>  EXPORT_SYMBOL(call_usermodehelper_freeinfo);
>  
> +static void umh_complete(struct subprocess_info *sub_info)
> +{
> +	complete(sub_info->complete);
> +}
> +
>  /* Keventd can't block, but this (a child) can. */
>  static int wait_for_helper(void *data)
>  {
> @@ -245,7 +250,7 @@ static int wait_for_helper(void *data)
>  	if (sub_info->wait == UMH_NO_WAIT)
>  		call_usermodehelper_freeinfo(sub_info);
>  	else
> -		complete(sub_info->complete);
> +		umh_complete(sub_info);
>  	return 0;
>  }
>  
> @@ -280,7 +285,7 @@ static void __call_usermodehelper(struct work_struct *work)
>  		/* FALLTHROUGH */
>  
>  	case UMH_WAIT_EXEC:
> -		complete(sub_info->complete);
> +		umh_complete(sub_info);
>  	}
>  }
>  

-- 
Ben Hutchings
Theory and practice are closer in theory than in practice.
                                - John Levine, moderator of comp.compilers

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