linux-kernel - [ 144/153] usermodehelper: introduce umh_complete(sub

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Message-Id: <20130304033721.690636219@decadent.org.uk>
Date:	Mon, 04 Mar 2013 03:39:31 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.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>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [ 144/153] usermodehelper: introduce umh_complete(sub_info)

3.2-stable 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>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 kernel/kmod.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -197,6 +197,11 @@ void call_usermodehelper_freeinfo(struct
 }
 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)
 {
@@ -233,7 +238,7 @@ static int wait_for_helper(void *data)
 			sub_info->retval = ret;
 	}
 
-	complete(sub_info->complete);
+	umh_complete(sub_info);
 	return 0;
 }
 
@@ -267,7 +272,7 @@ static void __call_usermodehelper(struct
 	case UMH_WAIT_EXEC:
 		if (pid < 0)
 			sub_info->retval = pid;
-		complete(sub_info->complete);
+		umh_complete(sub_info);
 	}
 }
 


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