md/r5cache: remove redundant pointer bio

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@canonical.com>
Signed-off-by: Shaohua Li <shli@fb.com>

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 2b775ab..7416db7 100644 (file)
--- 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);