linux-kernel - [PATCH 09/20] block, bfq: remove redundant check if (bfqq->dispatched

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Message-ID: <20221101093417.10540-10-shikemeng@huawei.com>
Date:   Tue, 1 Nov 2022 17:34:06 +0800
From:   Kemeng Shi <shikemeng@...wei.com>
To:     <paolo.valente@...aro.org>, <axboe@...nel.dk>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <shikemeng@...wei.com>
Subject: [PATCH 09/20] block, bfq: remove redundant check if (bfqq->dispatched > 0)

Commit 3c337690d2ebb7 ("block, bfq: avoid spurious switches to soft_rt of
interactive queues") remove bfqq->wr_coeff != bfqd->bfq_wr_coeff check
along with bfqq->dispatched == 0 to update soft_rt_next_start for
interactive bfq_queues. So we can remove redundant bfqq->dispatched > 0
in else branch with current bfqq->dispatched == 0 check.

Signed-off-by: Kemeng Shi <shikemeng@...wei.com>
---
 block/bfq-iosched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index fa96cbca7814..8f6d05258f22 100644
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -4375,7 +4375,7 @@ void bfq_bfqq_expire(struct bfq_data *bfqd,
 		if (bfqq->dispatched == 0)
 			bfqq->soft_rt_next_start =
 				bfq_bfqq_softrt_next_start(bfqd, bfqq);
-		else if (bfqq->dispatched > 0) {
+		else {
 			/*
 			 * Schedule an update of soft_rt_next_start to when
 			 * the task may be discovered to be isochronous.
-- 
2.30.0