[XFS] Need to vn_revalidate after dm_set_fileattr

SGI Modid: xfs-linux:xfs-kern:179137a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_file.c

@@ -409,6 +409,8 @@ linvfs_file_mmap(
 	vma->vm_ops = &linvfs_file_vm_ops;
 
 	VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error);
+	if (!error)
+		vn_revalidate(vp);	/* update Linux inode flags */
 	return 0;
 }