From: Yu Kuai <yukuai1@huaweicloud.com>
To: paolo.valente@linaro.org, axboe@kernel.dk
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com
Subject: [PATCH v2 2/3] block: add a helper to check elevator name
Date: Mon, 19 Sep 2022 15:09:15 +0800 [thread overview]
Message-ID: <20220919070916.2738443-3-yukuai1@huaweicloud.com> (raw)
In-Reply-To: <20220919070916.2738443-1-yukuai1@huaweicloud.com>
From: Yu Kuai <yukuai3@huawei.com>
The helper will be used in later patch to make sure wbt is not enabled
if default io scheduler is bfq.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
block/elevator.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block/elevator.h b/block/elevator.h
index 3f0593b3bf9d..2ddc738cae97 100644
--- a/block/elevator.h
+++ b/block/elevator.h
@@ -104,6 +104,11 @@ struct elevator_queue
DECLARE_HASHTABLE(hash, ELV_HASH_BITS);
};
+static inline bool check_elevator_name(struct elevator_queue *elevator,
+ const char *name)
+{
+ return elevator && !strcmp(elevator->type->elevator_name, name);
+}
/*
* block elevator interface
*/
--
2.31.1
next prev parent reply other threads:[~2022-09-19 6:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-19 7:09 [PATCH v2 0/3] blk-wbt: simple improvment to enable wbt correctly Yu Kuai
2022-09-19 7:09 ` [PATCH v2 1/3] wbt: don't show valid wbt_lat_usec in sysfs while wbt is disabled Yu Kuai
2022-09-19 7:09 ` Yu Kuai [this message]
2022-09-19 7:09 ` [PATCH v2 3/3] blk-wbt: don't enable throttling if default elevator is bfq Yu Kuai
2022-09-20 7:25 ` Christoph Hellwig
2022-09-20 7:48 ` Yu Kuai
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