linux-kernel - linux-next: build failure after merge of the akpm-current tree

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Date:	Mon, 2 Nov 2015 03:15:08 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>,
	Markus Pargmann <mpa@...gutronix.de>, Jens Axboe <axboe@...com>
Subject: linux-next: build failure after merge of the akpm-current tree

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

drivers/block/nbd.c: In function 'nbd_thread_send':
drivers/block/nbd.c:592:3: error: implicit declaration of function 'dequeue_signal_lock' [-Werror=implicit-function-declaration]
   dequeue_signal_lock(current, &current->blocked, &info);
   ^

Caused by commit

  ffcb8dc55a97 ("signal: turn dequeue_signal_lock() into kernel_dequeue_signal()")

interacting with commit

  dcc909d90ccd ("nbd: Add locking for tasks")

from Linus' tree.

I added this merge fix patch:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Mon, 2 Nov 2015 03:04:27 +1100
Subject: [PATCH] ndb: fix up for dequeue_signal_lock API change

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/block/nbd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 5101fd2aca77..93b3f99b6865 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -587,10 +587,8 @@ static int nbd_thread_send(void *data)
 	spin_unlock_irqrestore(&nbd->tasks_lock, flags);
 
 	/* Clear maybe pending signals */
-	if (signal_pending(current)) {
-		siginfo_t info;
-		dequeue_signal_lock(current, &current->blocked, &info);
-	}
+	if (signal_pending(current))
+		kernel_dequeue_signal(NULL);
 
 	return 0;
 }
-- 
2.6.1

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
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