linux-kernel - [PATCH] radix tree: remove unused variable

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Date:   Fri, 11 Aug 2023 15:10:13 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peng Zhang <zhangpeng.00@...edance.com>,
        Rong Tao <rongtao@...tc.cn>, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH] radix tree: remove unused variable

From: Arnd Bergmann <arnd@...db.de>

Recent versions of clang warn about an unused variable, though older
versions saw the 'slot++' as a use and did not warn:

radix-tree.c:1136:50: error: parameter 'slot' set but not used [-Werror,-Wunused-but-set-parameter]

It's clearly not needed any more, so just remove it.

Fixes: 3a08cd52c37c7 ("radix tree: Remove multiorder support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 lib/radix-tree.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 1a31065b2036a..976b9bd02a1b5 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1136,7 +1136,6 @@ static void set_iter_tags(struct radix_tree_iter *iter,
 void __rcu **radix_tree_iter_resume(void __rcu **slot,
 					struct radix_tree_iter *iter)
 {
-	slot++;
 	iter->index = __radix_tree_iter_add(iter, 1);
 	iter->next_index = iter->index;
 	iter->tags = 0;
-- 
2.39.2