linux-kernel - Re: [PATCH v3 1/1] nvme: multipath: Implemented new iopolicy "queue-depth"

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Message-ID: <da35bc8b-6813-42c8-b446-8a07b08db156@grimberg.me>
Date: Tue, 21 May 2024 13:11:18 +0300
From: Sagi Grimberg <sagi@...mberg.me>
To: Nilay Shroff <nilay@...ux.ibm.com>, John Meneghini <jmeneghi@...hat.com>,
 kbusch@...nel.org, hch@....de, emilne@...hat.com
Cc: linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
 jrani@...estorage.com, randyj@...estorage.com, hare@...nel.org
Subject: Re: [PATCH v3 1/1] nvme: multipath: Implemented new iopolicy
 "queue-depth"


>> Don't think this matters because cancellation only happens when we
>> teardown the controller anyways...
>>
> I think in case if we reset the nvme controller then we don't teardown
> controller, isn't it? In this case we cancel all pending requests, and
> later restart the controller.

Exactly, nvme_mpath_init_ctrl resets the counter.