linux-kernel - Re: [PATCH v8 01/12] scsi: aacraid: use block layer helpers to calculate num of queues

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Message-ID: <8f493741-5e39-4a09-ac3a-0bf22479e88f@suse.de>
Date: Mon, 8 Sep 2025 08:06:04 +0200
From: Hannes Reinecke <hare@...e.de>
To: Daniel Wagner <wagi@...nel.org>, Jens Axboe <axboe@...nel.dk>,
 Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de>,
 Sagi Grimberg <sagi@...mberg.me>, "Michael S. Tsirkin" <mst@...hat.com>
Cc: Aaron Tomlin <atomlin@...mlin.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 Thomas Gleixner <tglx@...utronix.de>, Costa Shulyupin
 <costa.shul@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
 Valentin Schneider <vschneid@...hat.com>, Waiman Long <llong@...hat.com>,
 Ming Lei <ming.lei@...hat.com>, Frederic Weisbecker <frederic@...nel.org>,
 Mel Gorman <mgorman@...e.de>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
 linux-nvme@...ts.infradead.org, megaraidlinux.pdl@...adcom.com,
 linux-scsi@...r.kernel.org, storagedev@...rochip.com,
 virtualization@...ts.linux.dev, GR-QLogic-Storage-Upstream@...vell.com
Subject: Re: [PATCH v8 01/12] scsi: aacraid: use block layer helpers to
 calculate num of queues

On 9/5/25 16:59, Daniel Wagner wrote:
> The calculation of the upper limit for queues does not depend solely on
> the number of online CPUs; for example, the isolcpus kernel
> command-line option must also be considered.
> 
> To account for this, the block layer provides a helper function to
> retrieve the maximum number of queues. Use it to set an appropriate
> upper queue number limit.
> 
> Fixes: 94970cfb5f10 ("scsi: use block layer helpers to calculate num of queues")
> Signed-off-by: Daniel Wagner <wagi@...nel.org>
> ---
>   drivers/scsi/aacraid/comminit.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@...e.de                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich