GFS2: smbd proccess hangs with flock() call.

GFS2 currently does not support mandatory flocks. An flock() call with
LOCK_MAND triggers unexpected behavior because gfs2 is not checking for
this lock type. This patch corrects that.

Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 73b6f552f06d..841ddc979388 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -698,8 +698,8 @@ static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl)
 
         if (!(fl->fl_flags & FL_FLOCK))
                 return -ENOLCK;
-        if (__mandatory_lock(&ip->i_inode))
-                return -ENOLCK;
+        if (fl->fl_type & LOCK_MAND)
+                return -EOPNOTSUPP;
 
         if (fl->fl_type == F_UNLCK) {
                 do_unflock(file, fl);