On Sat, Nov 11, 2023 at 08:45:28PM +0000, Colin Ian King wrote:
> Variable level is being initialized a value that is never read, the
> variable is being re-assigned another value several statements later
> on. The initialization is redundant and can be removed. Cleans up
> clang scan build warning:
>
> fs/bcachefs/btree_iter.c:1217:11: warning: Value stored to 'level'
> during its initialization is never read [deadcode.DeadStores]
>
> Signed-off-by: Colin Ian King <colin.i.king@xxxxxxxxx>
since we're no longer gnu89, we can simply declare the variable when
it's first used, like so:
diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c
index 96bdf0c6051c..104172f6822b 100644
--- a/fs/bcachefs/btree_iter.c
+++ b/fs/bcachefs/btree_iter.c
@@ -1214,8 +1214,6 @@ __bch2_btree_path_set_pos(struct btree_trans *trans,
struct btree_path *path, struct bpos new_pos,
bool intent, unsigned long ip, int cmp)
{
- unsigned level = path->level;
-
bch2_trans_verify_not_in_restart(trans);
EBUG_ON(!path->ref);
@@ -1231,7 +1229,7 @@ __bch2_btree_path_set_pos(struct btree_trans *trans,
goto out;
}
- level = btree_path_up_until_good_node(trans, path, cmp);
+ unsigned level = btree_path_up_until_good_node(trans, path, cmp);
if (btree_path_node(path, level)) {
struct btree_path_level *l = &path->l[level];
