[PATCH] shmem_link duplicated test

Trivial: vfs_link in 2.5 checks S_ISDIR first, shmem_link
need not repeat it, but test crept back in at some stage.

mm/shmem.c

@@ -1080,9 +1080,6 @@ static int shmem_link(struct dentry *old_dentry, struct inode * dir, struct dent
 {
 	struct inode *inode = old_dentry->d_inode;
 
-	if (S_ISDIR(inode->i_mode))
-		return -EPERM;
-
 	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
 	inode->i_nlink++;
 	atomic_inc(&inode->i_count);	/* New dentry reference */