blk-mq: remove wrong 'unlikely' check

When dispatch_rq_from_ctx is called, in the vast majority of cases the ctx->rq_list is not empty. Signed-off-by: huhai <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
vieko · May 22, 2018 · b4f6f38 · b4f6f38
1 parent 68fa9db
commit b4f6f38
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/block/blk-mq.c b/block/blk-mq.c
@@ -1036,7 +1036,7 @@ static bool dispatch_rq_from_ctx(struct sbitmap *sb, unsigned int bitnr,
 	struct blk_mq_ctx *ctx = hctx->ctxs[bitnr];
 
 	spin_lock(&ctx->lock);
-	if (unlikely(!list_empty(&ctx->rq_list))) {
+	if (!list_empty(&ctx->rq_list)) {
 		dispatch_data->rq = list_entry_rq(ctx->rq_list.next);
 		list_del_init(&dispatch_data->rq->queuelist);
 		if (list_empty(&ctx->rq_list))