1 files changed, 1 insertions, 1 deletions

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 2a40c2946d0a..716691689fd5 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -105,7 +105,7 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl)
         P9_DPRINTK(P9_DEBUG_VFS, "filp: %p lock: %p\n", filp, fl);
 
         /* No mandatory locks */
-        if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID)
+        if (__mandatory_lock(inode))
                 return -ENOLCK;
 
         if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) {