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Date: Thu, 24 Jul 2014 07:40:36 +0200 From: Hannes Reinecke <hare@...e.de> To: "K. Y. Srinivasan" <kys@...rosoft.com>, gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org, devel@...uxdriverproject.org, ohering@...e.com, apw@...onical.com, jasowang@...hat.com, jbottomley@...allels.com, hch@...radead.org, linux-scsi@...r.kernel.org Subject: Re: [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags On 07/22/2014 01:06 AM, K. Y. Srinivasan wrote: > Add blist flags to permit the reading of the VPD pages even when > the target may claim SPC-2 compliance. MSFT targets currently > claim SPC-2 compliance while they implement post SPC-2 features. > With this patch we can correctly handle WRITE_SAME_16 issues. > > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com> > --- > drivers/scsi/storvsc_drv.c | 10 ++++++++++ > 1 files changed, 10 insertions(+), 0 deletions(-) > > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c > index 29d0329..15ba695 100644 > --- a/drivers/scsi/storvsc_drv.c > +++ b/drivers/scsi/storvsc_drv.c > @@ -327,6 +327,8 @@ MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)"); > */ > static int storvsc_timeout = 180; > > +static int msft_blist_flags = BLIST_TRY_VPD_PAGES; > + > #define STORVSC_MAX_IO_REQUESTS 200 > > static void storvsc_on_channel_callback(void *context); > @@ -1449,6 +1451,14 @@ static int storvsc_device_configure(struct scsi_device *sdevice) > > sdevice->no_write_same = 1; > > + /* > + * Add blist flags to permit the reading of the VPD pages even when > + * the target may claim SPC-2 compliance. MSFT targets currently > + * claim SPC-2 compliance while they implement post SPC-2 features. > + * With this patch we can correctly handle WRITE_SAME_16 issues. > + */ > + sdevice->sdev_bflags |= msft_blist_flags; > + > return 0; > } > > Reviewed-by: Hannes Reinecke <hare@...e.de> Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@...e.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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