[Cluster-devel] [GFS2 PATCH] bz502531 - GFS2: smbd proccess hangs with flock() call.

[Abhijith Das]

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 <a...@redhat.com>

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 73b6f55..841ddc9 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);