Btrfs: remove unnecessary code in btree_get_extent()
Unnecessary lookup_extent_mapping() is removed because an error is
returned to the caller.
This patch was made based on the advice from Stefan Behrens, thanks.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 8db87bc..8d633e3 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -217,16 +217,10 @@
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
if (ret == -EEXIST) {
- u64 failed_start = em->start;
- u64 failed_len = em->len;
-
free_extent_map(em);
em = lookup_extent_mapping(em_tree, start, len);
- if (!em) {
- lookup_extent_mapping(em_tree, failed_start,
- failed_len);
+ if (!em)
em = ERR_PTR(-EIO);
- }
} else if (ret) {
free_extent_map(em);
em = ERR_PTR(ret);