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blk-mq: remove wrong 'unlikely' check

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When dispatch_rq_from_ctx is called, in the vast majority of cases
the ctx->rq_list is not empty.

Signed-off-by: huhai <huhai@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
huhai 2018-05-22 17:39:34 +08:00 committed by Jens Axboe
parent 68fa9dbe08
commit b4f6f38d9f
1 changed files with 1 additions and 1 deletions
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2
block/blk-mq.c
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@ -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))