linux-kernel - BTRFS: unreachable code found

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Date:	Fri, 13 Nov 2009 11:32:59 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	chris.mason@...cle.com
CC:	zheng.yan@...cle.com, linux-btrfs@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: BTRFS: unreachable code found

Hi,

Stanse found unreachable code in btrfs_insert_some_items below (don't
look at the line numbers, they are on preprocessed code). I would fix
that if I knew how.

Should the assignment be after the if, before the break or nowhere?

 3068|int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
 3069|       struct btrfs_root *root,
 3070|       struct btrfs_path *path,
 3071|       struct btrfs_key *cpu_key, u32 *data_size,
 3072|       int nr)
 3073|{
...
 3086| for (i = 0; i < nr; i++) {
 3087|  if (total_size + data_size[i] + sizeof(struct btrfs_item) >
 3088|      (((root->leafsize) - sizeof(struct btrfs_header)))) {
 3089|   break;
 3090|   nr = i;
     |This node is unreachable prev next
 3091|  }
 3092|  total_data += data_size[i];
 3093|  total_size += data_size[i] + sizeof(struct btrfs_item);
 3094| }

regards,
-- 
js
Faculty of Informatics, Masaryk University
Suse Labs, Novell
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