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Btrfs: cleanup of error processing in btree_get_extent()

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This patch simplifies a little complex error processing in
btree_get_extent().

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
This commit is contained in:
Tsutomu Itoh
2012-09-13 03:32:32 -06:00
committed by Chris Mason
parent 90abccf2c6
commit 0433f20d43
1 changed files with 5 additions and 9 deletions
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12
fs/btrfs/disk-io.c
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@@ -222,21 +222,17 @@ static struct extent_map *btree_get_extent(struct inode *inode,
free_extent_map(em); free_extent_map(em);
em = lookup_extent_mapping(em_tree, start, len); em = lookup_extent_mapping(em_tree, start, len);
if (em) { if (!em) {
ret = 0; lookup_extent_mapping(em_tree, failed_start,
} else {
em = lookup_extent_mapping(em_tree, failed_start,
failed_len); failed_len);
ret = -EIO; em = ERR_PTR(-EIO);
} }
} else if (ret) { } else if (ret) {
free_extent_map(em); free_extent_map(em);
em = NULL; em = ERR_PTR(ret);
} }
write_unlock(&em_tree->lock); write_unlock(&em_tree->lock);
if (ret)
em = ERR_PTR(ret);
out: out:
return em; return em;
} }