| Message ID | 1421064867-9241-2-git-send-email-apw@canonical.com |
|---|---|
| State | New |
| Headers | show |
On Mon, Jan 12, 2015 at 12:14:25PM +0000, Andy Whitcroft wrote: > From: "K. Y. Srinivasan" <kys@microsoft.com> > > On win8 and win8 r2 hosts force SPC-3 compliance for MSFT virtual disks. > Ubuntu has been carrying a similar patch outside the tree for a while now. > Starting with win10, the host will support SPC-3 compliance. Based on all > the testing that has been done on win8 and win8 r2 hosts, we are comfortable > claiming SPC-3 compliance on these hosts as well. This will enable TRIM > support on these hosts. > > Suggested by: James Bottomley <James.Bottomley@HansenPartnership.com> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> > Reviewed-by: Long Li <longli@microsoft.com> > Signed-off-by: Christoph Hellwig <hch@lst.de> > > [pending for v3.20 in the scsi-drivers tree] > BugLink: http://bugs.launchpad.net/bugs/1406867 > Signed-off-by: Andy Whitcroft <apw@canonical.com> > --- > drivers/scsi/storvsc_drv.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c > index a11e5e9..1e1256c 100644 > --- a/drivers/scsi/storvsc_drv.c > +++ b/drivers/scsi/storvsc_drv.c > @@ -1459,6 +1459,19 @@ static int storvsc_device_configure(struct scsi_device *sdevice) > */ > sdevice->sdev_bflags |= msft_blist_flags; > > + /* > + * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3 > + * if the device is a MSFT virtual device. > + */ > + if (!strncmp(sdevice->vendor, "Msft", 4)) { > + switch (vmbus_proto_version) { > + case VERSION_WIN8: > + case VERSION_WIN8_1: > + sdevice->scsi_level = SCSI_SPC_3; > + break; > + } > + } > + > return 0; > } > > -- > 2.1.4 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team Applied to Trusty master-next
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index a11e5e9..1e1256c 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -1459,6 +1459,19 @@ static int storvsc_device_configure(struct scsi_device *sdevice) */ sdevice->sdev_bflags |= msft_blist_flags; + /* + * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3 + * if the device is a MSFT virtual device. + */ + if (!strncmp(sdevice->vendor, "Msft", 4)) { + switch (vmbus_proto_version) { + case VERSION_WIN8: + case VERSION_WIN8_1: + sdevice->scsi_level = SCSI_SPC_3; + break; + } + } + return 0; }