null_blk: remove unused fields in 'nullb_cmd'

'list', 'll_list' and 'csd' are no longer used.

The 'list' is not used since it was introduced by commit f2298c0403b0
("null_blk: multi queue aware block test driver").

The 'll_list' is no longer used since commit 3c395a969acc ("null_blk: set a
separate timer for each command").

The 'csd' is no longer used since commit ce2c350b2cfe ("null_blk: use
blk_complete_request and blk_mq_complete_request").

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/null_blk.h b/drivers/block/null_blk.h
index bc83786..62b6608 100644 (file)
--- a/drivers/block/null_blk.h
+++ b/drivers/block/null_blk.h
@@ -14,9 +14,6 @@
 #include <linux/fault-inject.h>
 
 struct nullb_cmd {
-       struct list_head list;
-       struct llist_node ll_list;
-       struct __call_single_data csd;
        struct request *rq;
        struct bio *bio;
        unsigned int tag;

diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c
index 1651079..1330604 100644 (file)
--- a/drivers/block/null_blk_main.c
+++ b/drivers/block/null_blk_main.c
@@ -1518,8 +1518,6 @@ static int setup_commands(struct nullb_queue *nq)
 
        for (i = 0; i < nq->queue_depth; i++) {
                cmd = &nq->cmds[i];
-               INIT_LIST_HEAD(&cmd->list);
-               cmd->ll_list.next = NULL;
                cmd->tag = -1U;
        }