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Btrfs: return error code to caller when btrfs_previous_item fails

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The error code is returned instead of calling BUG_ON when
btrfs_previous_item returns the error.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Tsutomu Itoh 2011-05-19 07:03:42 +00:00 committed by Chris Mason
parent 27160b6b5a
commit b0b802d7e3
1 changed files with 3 additions and 2 deletions
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5
fs/btrfs/volumes.c
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@ -949,14 +949,14 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,
if (ret > 0) {
ret = btrfs_previous_item(root, path, key.objectid,
BTRFS_DEV_EXTENT_KEY);
BUG_ON(ret);
if (ret)
goto out;
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
extent = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_dev_extent);
BUG_ON(found_key.offset > start || found_key.offset +
btrfs_dev_extent_length(leaf, extent) < start);
ret = 0;
} else if (ret == 0) {
leaf = path->nodes[0];
extent = btrfs_item_ptr(leaf, path->slots[0],
@ -969,6 +969,7 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,
ret = btrfs_del_item(trans, root, path);
BUG_ON(ret);
out:
btrfs_free_path(path);
return ret;
}