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

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Date:	Wed, 19 Dec 2012 11:55:43 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Eric Paris <eparis@...hat.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Lino Sanfilippo <LinoSanfilippo@....de>
Subject: linux-next: build failure after merge of the fsnotify tree

Hi Eric,

After merging the fsnotify tree, today's linux-next build
(powerpc_ppc64_defconfig) failed like this:

fs/notify/fdinfo.c: In function 'show_fdinfo':
fs/notify/fdinfo.c:30:18: error: 'struct fsnotify_group' has no member named 'mark_lock'
fs/notify/fdinfo.c:36:20: error: 'struct fsnotify_group' has no member named 'mark_lock'

Caused by commit 986ab09807ca ("fsnotify: use a mutex instead of a
spinlock to protect a groups mark list") interacting with commit
be77196b809c ("fs, notify: add procfs fdinfo helper") from Linus' tree
(via Andrew' tree).

I added the following merge fix patch:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 19 Dec 2012 11:53:20 +1100
Subject: [PATCH] fsnotify: cope with change from spinlock to mutex

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

diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 514c4b8..238a593 100644
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -27,13 +27,13 @@ static int show_fdinfo(struct seq_file *m, struct file *f,
 	struct fsnotify_mark *mark;
 	int ret = 0;
 
-	spin_lock(&group->mark_lock);
+	mutex_lock(&group->mark_mutex);
 	list_for_each_entry(mark, &group->marks_list, g_list) {
 		ret = show(m, mark);
 		if (ret)
 			break;
 	}
-	spin_unlock(&group->mark_lock);
+	mutex_unlock(&group->mark_mutex);
 	return ret;
 }
 
-- 
1.7.10.280.gaa39

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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