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From: Guenter Roeck <linux@roeck-us.net>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org, linux-aio@kvack.org,
	linux-kernel@vger.kernel.org, kernel-testers@vger.kernel.org,
	Guenter Roeck <linux@roeck-us.net>,
	Benjamin LaHaise <bcrl@kvack.org>
Subject: [PATCH -next] aio: Fix compile error due to unexpected use of cmpxchg()
Date: Fri, 22 Jan 2016 10:14:39 -0800	[thread overview]
Message-ID: <1453486479-19347-1-git-send-email-linux@roeck-us.net> (raw)

cmpxchg() on some architectures (ia64) doesn't like functions as parameters.
This results in the following compile error on the affected architectures.

fs/aio.c: In function 'aio_thread_fn':
fs/aio.c:1499:1: error: cast specifies function type

Fixes: 6a81013efc40 ("aio: add support for IOCB_CMD_POLL via aio thread helper")
Cc: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
No idea if this is the correct or an acceptable fix.
If not, please consider this to be a bug report.

 fs/aio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index 56bcdf4105f4..229a91e391df 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1495,8 +1495,8 @@ static void aio_thread_fn(struct work_struct *work)
 	 * cancellation if it has not already occurred.
 	 */
 	old_cancel = cmpxchg(&iocb->ki_cancel,
-			     aio_thread_queue_iocb_cancel_early,
-			     aio_thread_queue_iocb_cancel);
+			     (kiocb_cancel_fn *)aio_thread_queue_iocb_cancel_early,
+			     (kiocb_cancel_fn *)aio_thread_queue_iocb_cancel);
 	if (old_cancel != KIOCB_CANCELLED)
 		ret = iocb->ki_work_fn(iocb);
 	else
-- 
2.1.4

WARNING: multiple messages have this Message-ID (diff)
From: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
To: Alexander Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-aio-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>,
	Benjamin LaHaise <bcrl-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>
Subject: [PATCH -next] aio: Fix compile error due to unexpected use of cmpxchg()
Date: Fri, 22 Jan 2016 10:14:39 -0800	[thread overview]
Message-ID: <1453486479-19347-1-git-send-email-linux@roeck-us.net> (raw)

cmpxchg() on some architectures (ia64) doesn't like functions as parameters.
This results in the following compile error on the affected architectures.

fs/aio.c: In function 'aio_thread_fn':
fs/aio.c:1499:1: error: cast specifies function type

Fixes: 6a81013efc40 ("aio: add support for IOCB_CMD_POLL via aio thread helper")
Cc: Benjamin LaHaise <bcrl-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>
Signed-off-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
---
No idea if this is the correct or an acceptable fix.
If not, please consider this to be a bug report.

 fs/aio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index 56bcdf4105f4..229a91e391df 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1495,8 +1495,8 @@ static void aio_thread_fn(struct work_struct *work)
 	 * cancellation if it has not already occurred.
 	 */
 	old_cancel = cmpxchg(&iocb->ki_cancel,
-			     aio_thread_queue_iocb_cancel_early,
-			     aio_thread_queue_iocb_cancel);
+			     (kiocb_cancel_fn *)aio_thread_queue_iocb_cancel_early,
+			     (kiocb_cancel_fn *)aio_thread_queue_iocb_cancel);
 	if (old_cancel != KIOCB_CANCELLED)
 		ret = iocb->ki_work_fn(iocb);
 	else
-- 
2.1.4

             reply	other threads:[~2016-01-22 18:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-22 18:14 Guenter Roeck [this message]
2016-01-22 18:14 ` [PATCH -next] aio: Fix compile error due to unexpected use of cmpxchg() Guenter Roeck
2016-01-22 18:44 ` Benjamin LaHaise
2016-01-22 18:44   ` Benjamin LaHaise

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