> -----Original Message----- > From: Hannes Reinecke [mailto:hare@xxxxxxx] > Sent: Friday, July 11, 2014 2:53 AM > To: KY Srinivasan; Christoph Hellwig > Cc: linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; > ohering@xxxxxxxx; jbottomley@xxxxxxxxxxxxx; jasowang@xxxxxxxxxx; > apw@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx > Subject: Re: [PATCH 6/8] Drivers: scsi: storvsc: Implement an abort handler > > On 07/11/2014 12:26 AM, KY Srinivasan wrote: > > > > > >> -----Original Message----- > >> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx] > >> Sent: Thursday, July 10, 2014 3:13 AM > >> To: KY Srinivasan > >> Cc: Christoph Hellwig; linux-kernel@xxxxxxxxxxxxxxx; > >> devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx; > >> jbottomley@xxxxxxxxxxxxx; jasowang@xxxxxxxxxx; apw@xxxxxxxxxxxxx; > >> linux-scsi@xxxxxxxxxxxxxxx > >> Subject: Re: [PATCH 6/8] Drivers: scsi: storvsc: Implement an abort > >> handler > >> > >> > >> Note that you could increase the timeout and/or implement an > >> eh_timed_out handler that just returns BLK_EH_RESET_TIMER, but if the > >> completion takes too long the expectation is that a command will > >> eventually finish instead of beeing delayed by an unmound amount. > > > > I like this idea; I will implement a eh_timed_out_handler. > > > Something like this should be sufficient: > > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index > e71a0d7..630ae81 100644 > --- a/drivers/scsi/storvsc_drv.c > +++ b/drivers/scsi/storvsc_drv.c > @@ -1468,6 +1468,12 @@ static int storvsc_get_chs(struct scsi_device > *sdev, stru ct block_device * bdev, > return 0; > } > > +static enum blk_eh_timer_return > +storvsc_timed_out_handler(struct scsi_cmnd *scmd) { > + return BLK_EH_RESET_TIMER; > +} > + > static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd) > { > struct hv_host_device *host_dev = shost_priv(scmnd->device->host); > @@ -1687,6 +1693,7 @@ static struct scsi_host_template scsi_driver = { > .name = "storvsc_host_t", > .bios_param = storvsc_get_chs, > .queuecommand = storvsc_queuecommand, > + .eh_timed_out = storvsc_timed_out_handler, > .eh_host_reset_handler = storvsc_host_reset_handler, > .slave_alloc = storvsc_device_alloc, > .slave_destroy = storvsc_device_destroy, > > Cheers, Thanks Hannes. Based on Christoph's feedback I have implemented exactly this patch. It is under test on Azure. I will be re-spinning and posting the patches shortly. K. Y > > Hannes > -- > Dr. Hannes Reinecke zSeries & Storage > hare@xxxxxxx +49 911 74053 688 > SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg > GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
