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| author | huhai <huhai@kylinos.cn> | 2018-05-22 17:39:34 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-05-22 08:38:04 -0600 |
| commit | b4f6f38d9f85b6209ddaf81886b687da150dfd7b (patch) | |
| tree | 764ade470931607eaf1dd865ce7c31af08a60383 /block/blk-mq.c | |
| parent | 68fa9dbe0823e4f833ad8ddbb59c9ca279e84d57 (diff) | |
| download | linux-b4f6f38d9f85b6209ddaf81886b687da150dfd7b.tar.gz linux-b4f6f38d9f85b6209ddaf81886b687da150dfd7b.tar.bz2 linux-b4f6f38d9f85b6209ddaf81886b687da150dfd7b.zip | |
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 <huhai@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 4cbfd784e837..df928200b17e 100644 --- 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)) |