1 files changed, 15 insertions, 5 deletions

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index d84a3d8f32af..7c73f06692b6 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -593,6 +593,7 @@ out:
 static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
 {
         struct inode * inode = filp->f_mapping->host;
+        int ret = -ENOLCK;
 
         dprintk("NFS: nfs_lock(f=%s/%ld, t=%x, fl=%x, r=%Ld:%Ld)\n",
                         inode->i_sb->s_id, inode->i_ino,
@@ -602,13 +603,22 @@ static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
 
         /* No mandatory locks over NFS */
         if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK)
-                return -ENOLCK;
+                goto out_err;
+
+        if (NFS_PROTO(inode)->lock_check_bounds != NULL) {
+                ret = NFS_PROTO(inode)->lock_check_bounds(fl);
+                if (ret < 0)
+                        goto out_err;
+        }
 
         if (IS_GETLK(cmd))
-                return do_getlk(filp, cmd, fl);
-        if (fl->fl_type == F_UNLCK)
-                return do_unlk(filp, cmd, fl);
-        return do_setlk(filp, cmd, fl);
+                ret = do_getlk(filp, cmd, fl);
+        else if (fl->fl_type == F_UNLCK)
+                ret = do_unlk(filp, cmd, fl);
+        else
+                ret = do_setlk(filp, cmd, fl);
+out_err:
+        return ret;
 }
 
 /*