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

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Date:   Fri, 17 Dec 2021 18:13:25 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Chuck Lever <chuck.lever@...cle.com>
Cc:     NeilBrown <neilb@...e.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the userns tree

Hi all,

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

fs/lockd/svc.c: In function 'lockd':
fs/lockd/svc.c:188:2: error: implicit declaration of function 'module_put_and_exit'; did you mean 'module_put_and_kthread_exit'? [-Werror=implicit-function-declaration]
  188 |  module_put_and_exit(0);
      |  ^~~~~~~~~~~~~~~~~~~
      |  module_put_and_kthread_exit
fs/lockd/svc.c:189:1: error: no return statement in function returning non-void [-Werror=return-type]
  189 | }
      | ^

Caused by commit

  ca3574bd653a ("exit: Rename module_put_and_exit to module_put_and_kthread_exit")

interacting with commit

  6b044fbaab02 ("lockd: use svc_set_num_threads() for thread start and stop")

from the cel tree.

I have applied the following merge fix patch.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 17 Dec 2021 18:10:42 +1100
Subject: [PATCH] fix up for "lockd: use svc_set_num_threads() for thread start
 and stop"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 fs/lockd/svc.c             | 2 +-
 include/linux/sunrpc/svc.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 4defefd89cbf..0475c5a5d061 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -185,7 +185,7 @@ lockd(void *vrqstp)
 
 	svc_exit_thread(rqstp);
 
-	module_put_and_exit(0);
+	module_put_and_kthread_exit(0);
 }
 
 static int create_lockd_listener(struct svc_serv *serv, const char *name,
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index cf175d47c6b7..f35c22b3355f 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -65,7 +65,7 @@ struct svc_serv_ops {
 	void		(*svo_enqueue_xprt)(struct svc_xprt *);
 
 	/* optional module to count when adding threads.
-	 * Thread function must call module_put_and_exit() to exit.
+	 * Thread function must call module_put_and_kthread_exit() to exit.
 	 */
 	struct module	*svo_module;
 };
-- 
2.33.0

-- 
Cheers,
Stephen Rothwell

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