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Message-ID: <YN3WD4Vem5Zx8Dvq@infradead.org>
Date: Thu, 1 Jul 2021 15:49:51 +0100
From: Christoph Hellwig <hch@...radead.org>
To: Martin Kepplinger <martin.kepplinger@...i.sm>
Cc: bvanassche@....org, jejb@...ux.ibm.com,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
linux-scsi@...r.kernel.org, martin.petersen@...cle.com,
kernel@...i.sm, stern@...land.harvard.edu
Subject: Re: [PATCH v5 2/3] scsi: sd: send REQUEST SENSE for
BLIST_MEDIA_CHANGE devices in runtime_resume()
On Wed, Jun 30, 2021 at 10:44:52AM +0200, Martin Kepplinger wrote:
> + struct scsi_disk *sdkp = dev_get_drvdata(dev);
> + struct scsi_device *sdp = sdkp->device;
> + int timeout, res;
> +
> + timeout = sdp->request_queue->rq_timeout * SD_FLUSH_TIMEOUT_MULTIPLIER;
Is REQUEST SENSE reqlly a so slow operation on these devices that
we need to override the timeout?
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