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From: Ming Lei <ming.lei@redhat.com>
To: "Ewan D. Milne" <emilne@redhat.com>
Cc: linux-nvme@lists.infradead.org, tsong@purestorage.com,
	jmeneghi@redhat.com, mlombard@redhat.com
Subject: Re: [PATCH 1/3] block: introduce blk_queue_nr_active()
Date: Wed, 27 Sep 2023 17:49:24 +0800	[thread overview]
Message-ID: <ZRP6pCFd8+mWpUcS@fedora> (raw)
In-Reply-To: <20230925163123.16042-2-emilne@redhat.com>

On Mon, Sep 25, 2023 at 12:31:21PM -0400, Ewan D. Milne wrote:
> Returns a count of the total number of active requests
> in a queue.  For non-shared tags (the usual case) this is
> the sum of nr_active from all of the hctxs.

hctx->nr_active is only updated if BLK_MQ_F_TAG_QUEUE_SHARED is true
and blk_mq_is_shared_tags() is false, so hctx->nr_active isn't
available if BLK_MQ_F_TAG_QUEUE_SHARED is false(the usual case?).


Thanks,
Ming



  parent reply	other threads:[~2023-09-27  9:49 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-25 16:31 [PATCH 0/3] NVMe multipath path selector enhancements Ewan D. Milne
2023-09-25 16:31 ` [PATCH 1/3] block: introduce blk_queue_nr_active() Ewan D. Milne
2023-09-25 20:56   ` Bart Van Assche
2023-09-27 14:49     ` Ewan Milne
2023-09-27 14:58       ` Bart Van Assche
2023-09-27  7:36   ` Hannes Reinecke
2023-09-27 11:37     ` Ming Lei
2023-09-27 13:34     ` Ewan Milne
2023-10-03 20:11       ` Uday Shankar
2023-10-04  9:19         ` Sagi Grimberg
2023-09-27  9:49   ` Ming Lei [this message]
2023-09-27 13:54     ` Ewan Milne
2023-09-27 10:56   ` Sagi Grimberg
2023-09-27 13:50     ` Ewan Milne
2023-09-28 10:56       ` Sagi Grimberg
2023-09-25 16:31 ` [PATCH 2/3] nvme-multipath: Implement new iopolicy "queue-depth" Ewan D. Milne
2023-09-27  7:38   ` Hannes Reinecke
2023-09-27 11:02     ` Sagi Grimberg
2023-09-27 13:42     ` Ewan Milne
2023-09-25 16:31 ` [PATCH 3/3] nvme-multipath: add "use_nonoptimized" module option Ewan D. Milne
2023-09-27  7:41   ` Hannes Reinecke
2023-09-27 11:31     ` Sagi Grimberg
2023-09-27 13:11       ` John Meneghini
2023-09-27 13:45     ` Ewan Milne

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