Hi Andrew,

After merging the akpm-current tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from include/linux/thread_info.h:11:0,
                 from arch/x86/include/asm/preempt.h:6,
                 from include/linux/preempt.h:18,
                 from include/linux/spinlock.h:50,
                 from fs/ocfs2/stackglue.c:22:
include/linux/bug.h:33:45: error: negative width in bit-field '<anonymous>'
 #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
                                             ^
include/linux/kernel.h:848:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
   BUILD_BUG_ON_ZERO((perms) > 0777) +    \
   ^
include/linux/sysfs.h:75:12: note: in expansion of macro 'VERIFY_OCTAL_PERMISSIONS'
    .mode = VERIFY_OCTAL_PERMISSIONS(_mode) },  \
            ^
fs/ocfs2/stackglue.c:614:2: note: in expansion of macro '__ATTR'
  __ATTR(dlm_recover_callback_support, S_IFREG | S_IRUGO,
  ^

Caused by commit 88991182643c ("ocfs2: add dlm_recover_callback_support
in sysfs") interacting with commit 58f86cc89c33
("VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms") from the
modules tree.

I applied this fix up patch for today:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Tue, 25 Mar 2014 18:39:49 +1100
Subject: [PATCH] ocfs2: VERIFY_OCTAL_PERMISSIONS fix up

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 fs/ocfs2/stackglue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index c8c9d54dabc5..5e4d314c854d 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -611,7 +611,7 @@ static ssize_t ocfs2_dlm_recover_show(struct kobject *kobj,
 }
 
 static struct kobj_attribute ocfs2_attr_dlm_recover_support =
-	__ATTR(dlm_recover_callback_support, S_IFREG | S_IRUGO,
+	__ATTR(dlm_recover_callback_support, S_IRUGO,
 	       ocfs2_dlm_recover_show, NULL);
 
 static struct attribute *ocfs2_attrs[] = {
-- 
1.9.1

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