linux-kernel - [patch 1/3] btrfs cleanup: remove dead code

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Date:	Sat, 20 Mar 2010 14:26:05 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Chris Mason <chris.mason@...cle.com>
Cc:	Christoph Hellwig <hch@....de>, Dan Carpenter <error27@...il.com>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	André Goddard Rosa <andre.goddard@...il.com>,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch 1/3] btrfs cleanup: remove dead code

rb_node is never an ERR_PTR() here.  This code confuses smatch.

Signed-off-by: Dan Carpenter <error27@...il.com>
---
This doesn't change anything.  It's just a cleanup.  Could you load
it up for linux-next?

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 28d87ba..94668b1 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -335,10 +335,6 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
 		em = NULL;
 		goto out;
 	}
-	if (IS_ERR(rb_node)) {
-		em = ERR_PTR(PTR_ERR(rb_node));
-		goto out;
-	}
 	em = rb_entry(rb_node, struct extent_map, rb_node);
 	if (end > em->start && start < extent_map_end(em))
 		goto found;
--
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