linux-kernel - [PATCH -mm][AIO] AIO completion signal notification small cleanup

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Message-ID: <20070206125709.1ec67113@frecb000686>
Date:	Tue, 6 Feb 2007 12:57:09 +0100
From:	Sébastien Dugué <sebastien.dugue@...l.net>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Oleg Nesterov <oleg@...sign.ru>, Andrew Morton <akpm@...l.org>,
	linux-aio <linux-aio@...ck.org>,
	Bharata B Rao <bharata@...ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Ulrich Drepper <drepper@...hat.com>,
	Zach Brown <zach.brown@...cle.com>,
	Badari Pulavarty <pbadari@...ibm.com>,
	Jean Pierre Dion <jean-pierre.dion@...l.net>
Subject: [PATCH -mm][AIO] AIO completion signal notification small cleanup


  Andrew, one more cleanup to aio_setup_sigevent() to make it more readable.

  Sébastien.


From: Sébastien Dugué <sebastien.dugue@...l.net>

	AIO completion signal notification small cleanup

  This patch cleans up aio_setup_sigevent() to make it more readable.

 aio.c |   15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

Signed-off-by: Sébastien Dugué <sebastien.dugue@...l.net>


Index: linux-2.6.20-rc6-mm3/fs/aio.c
===================================================================
--- linux-2.6.20-rc6-mm3.orig/fs/aio.c	2007-02-06 09:33:55.000000000 +0100
+++ linux-2.6.20-rc6-mm3/fs/aio.c	2007-02-06 12:43:52.000000000 +0100
@@ -962,21 +962,11 @@ static long aio_setup_sigevent(struct ai
 	    event.sigev_notify != SIGEV_THREAD_ID)
 		return -EINVAL;
 
-	notify->notify = event.sigev_notify;
-	notify->signo = event.sigev_signo;
-	notify->value = event.sigev_value;
-
 	rcu_read_lock();
 	target = sigevent_find_task(&event);
 
-	if (unlikely(!target)) {
-		/*
-		 * Revert notify to SIGEV_NONE so that really_put_req()
-		 * knows that no ref has been taken on a task.
-		 */
-		notify->notify = SIGEV_NONE;
+	if (unlikely(!target))
 		goto out_unlock;
-	}
 
 	/*
 	 * At this point, we know that notify is either SIGEV_SIGNAL or
@@ -988,6 +978,9 @@ static long aio_setup_sigevent(struct ai
 	notify->target = target;
 	rcu_read_unlock();
 
+	notify->notify = event.sigev_notify;
+	notify->signo = event.sigev_signo;
+	notify->value = event.sigev_value;
 	notify->sigq = __sigqueue_alloc(current, GFP_KERNEL, 0);
 
 	/*
-
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