linux-kernel - [PATCH AUTOSEL 6.6 08/40] bcache: remove redundant assignment to variable cur

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Date:   Tue, 28 Nov 2023 16:05:14 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Colin Ian King <colin.i.king@...il.com>, Coly Li <colyli@...e.de>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>,
        kent.overstreet@...il.com, nathan@...nel.org,
        ndesaulniers@...gle.com, linux-bcache@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.6 08/40] bcache: remove redundant assignment to variable cur_idx

From: Colin Ian King <colin.i.king@...il.com>

[ Upstream commit be93825f0e6428c2d3f03a6e4d447dc48d33d7ff ]

Variable cur_idx is being initialized with a value that is never read,
it is being re-assigned later in a while-loop. Remove the redundant
assignment. Cleans up clang scan build warning:

drivers/md/bcache/writeback.c:916:2: warning: Value stored to 'cur_idx'
is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
Reviewed-by: Coly Li <colyli@...e.de>
Signed-off-by: Coly Li <colyli@...e.de>
Link: https://lore.kernel.org/r/20231120052503.6122-4-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/md/bcache/writeback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 24c049067f61a..c3e872e0a6f2c 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -913,7 +913,7 @@ static int bch_dirty_init_thread(void *arg)
 	int cur_idx, prev_idx, skip_nr;
 
 	k = p = NULL;
-	cur_idx = prev_idx = 0;
+	prev_idx = 0;
 
 	bch_btree_iter_init(&c->root->keys, &iter, NULL);
 	k = bch_btree_iter_next_filter(&iter, &c->root->keys, bch_ptr_bad);
-- 
2.42.0