linux-kernel - [PATCH] md/r5cache: remove redundant pointer bio

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Message-Id: <20180703065109.23620-1-colin.king@canonical.com>
Date:   Tue,  3 Jul 2018 07:51:09 +0100
From:   Colin King <colin.king@...onical.com>
To:     Shaohua Li <shli@...nel.org>, linux-raid@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] md/r5cache: remove redundant pointer bio

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

Pointer bio is being assigned but is never used hence it is redundant
and can be removed.

Cleans up clang warning:
warning: variable 'bio' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/md/raid5-cache.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 2b775abf377b..7416db70c6cc 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -717,7 +717,6 @@ static void r5c_disable_writeback_async(struct work_struct *work)
 static void r5l_submit_current_io(struct r5l_log *log)
 {
 	struct r5l_io_unit *io = log->current_io;
-	struct bio *bio;
 	struct r5l_meta_block *block;
 	unsigned long flags;
 	u32 crc;
@@ -730,7 +729,6 @@ static void r5l_submit_current_io(struct r5l_log *log)
 	block->meta_size = cpu_to_le32(io->meta_offset);
 	crc = crc32c_le(log->uuid_checksum, block, PAGE_SIZE);
 	block->checksum = cpu_to_le32(crc);
-	bio = io->current_bio;
 
 	log->current_io = NULL;
 	spin_lock_irqsave(&log->io_list_lock, flags);
-- 
2.17.1