Re: [resend v1 5/5] drivers/scsi/sd.c: Convert to use disk_set_capacity

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On Mon, Jan 06, 2020 at 10:48:30PM -0500, Martin K. Petersen wrote:
> 
> Balbir,
> 
> > diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
> > index 5afb0046b12a..1a3be30b6b78 100644
> > --- a/drivers/scsi/sd.c
> > +++ b/drivers/scsi/sd.c
> > @@ -3184,7 +3184,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
> >  
> >  	sdkp->first_scan = 0;
> >  
> > -	set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity));
> > +	disk_set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity));
> >  	sd_config_write_same(sdkp);
> >  	kfree(buffer);
> 
> We already emit an SDEV_EVT_CAPACITY_CHANGE_REPORTED event if device
> capacity changes. However, this event does not automatically cause
> revalidation.

Who is looking at these sdev specific events?  (And who is looking
at the virtio/xenblk ones?)  It  makes a lot of sense to have one event
supported by all devices.  But don't ask me which one would be the best..



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