linux-kernel - Re: [resend v1 5/5] drivers/scsi/sd.c: Convert to use disk_set

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Date:   Mon, 06 Jan 2020 23:39:25 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     James Bottomley <jejb@...ux.ibm.com>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        Balbir Singh <sblbir@...zon.com>, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, linux-nvme@...ts.infradead.org,
        axboe@...nel.dk, ssomesh@...zon.com, hch@....de, mst@...hat.com,
        Chaitanya.Kulkarni@....com
Subject: Re: [resend v1 5/5] drivers/scsi/sd.c: Convert to use disk_set_capacity


James,

>> We already emit an SDEV_EVT_CAPACITY_CHANGE_REPORTED event if device
>> capacity changes. However, this event does not automatically cause
>> revalidation.
>
> Which I seem to remember was a deliberate choice: some change
> capacities occur because the path goes passive and default values get
> installed.

Yep, it's very tricky territory.

-- 
Martin K. Petersen	Oracle Linux Engineering