linux-kernel - [PATCH 5.14 058/151] virtio-blk: remove unneeded "likely" statements

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Date:   Mon, 18 Oct 2021 15:23:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Stefan Hajnoczi <stefanha@...hat.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Chaitanya Kulkarni <ckulkarnilinux@...il.com>,
        Christoph Hellwig <hch@....de>
Subject: [PATCH 5.14 058/151] virtio-blk: remove unneeded "likely" statements

From: Max Gurtovoy <mgurtovoy@...dia.com>

commit 6105d1fe6f4c24ce8c13e2e6568b16b76e04983d upstream.

Usually we use "likely/unlikely" to optimize the fast path. Remove
redundant "likely/unlikely" statements in the control path to simplify
the code and make it easier to read.

Reviewed-by: Stefan Hajnoczi <stefanha@...hat.com>
Signed-off-by: Max Gurtovoy <mgurtovoy@...dia.com>
Link: https://lore.kernel.org/r/20210905085717.7427-1-mgurtovoy@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Reviewed-by: Chaitanya Kulkarni <ckulkarnilinux@...il.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Stefan Hajnoczi <stefanha@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/block/virtio_blk.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -765,7 +765,7 @@ static int virtblk_probe(struct virtio_d
 		goto out_free_vblk;
 
 	/* Default queue sizing is to fill the ring. */
-	if (likely(!virtblk_queue_depth)) {
+	if (!virtblk_queue_depth) {
 		queue_depth = vblk->vqs[0].vq->num_free;
 		/* ... but without indirect descs, we use 2 descs per req */
 		if (!virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC))
@@ -839,7 +839,7 @@ static int virtblk_probe(struct virtio_d
 	else
 		blk_size = queue_logical_block_size(q);
 
-	if (unlikely(blk_size < SECTOR_SIZE || blk_size > PAGE_SIZE)) {
+	if (blk_size < SECTOR_SIZE || blk_size > PAGE_SIZE) {
 		dev_err(&vdev->dev,
 			"block size is changed unexpectedly, now is %u\n",
 			blk_size);