Messages in this thread Patch in this message | | | Date | Tue, 3 Aug 2010 10:38:57 -0700 | From | Greg KH <> | Subject | Re: [PATCH 2/6] staging: hv: Fixed lockup problem with bounce_buffer scatter list |
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On Tue, Aug 03, 2010 at 05:31:53PM +0000, Hank Janssen wrote: > From: Hank Janssen <hjanssen@microsoft.com> > > Fixed lockup problem with bounce_buffer scatter list which caused crashes in heavy loads.
Same questions for you as patch 1/6.
Also, please wrap your changelog comments at 72 columns.
> > Signed-off-by:Hank Janssen <hjanssen@microsoft.com> > Signed-off-by:Haiyang Zhang <haiyangz@microsoft.com>
What's with the trailing space?
> > --- > drivers/staging/hv/storvsc_drv.c | 9 ++++++--- > 1 files changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c > index 3b9ccb0..169d701 100644 > --- a/drivers/staging/hv/storvsc_drv.c > +++ b/drivers/staging/hv/storvsc_drv.c > @@ -615,6 +615,7 @@ static int storvsc_queuecommand(struct scsi_cmnd *scmnd, > unsigned int request_size = 0; > int i; > struct scatterlist *sgl; > + unsigned int sg_count = 0; > > DPRINT_DBG(STORVSC_DRV, "scmnd %p dir %d, use_sg %d buf %p len %d " > "queue depth %d tagged %d", scmnd, scmnd->sc_data_direction, @@ -697,6 +698,7 @@ static int storvsc_queuecommand(struct scsi_cmnd *scmnd, > request->DataBuffer.Length = scsi_bufflen(scmnd); > if (scsi_sg_count(scmnd)) { > sgl = (struct scatterlist *)scsi_sglist(scmnd); > + sg_count = scsi_sg_count(scmnd); > > /* check if we need to bounce the sgl */ > if (do_bounce_buffer(sgl, scsi_sg_count(scmnd)) != -1) { @@ -731,15 +733,16 @@ static int storvsc_queuecommand(struct scsi_cmnd *scmnd, > scsi_sg_count(scmnd)); > > sgl = cmd_request->bounce_sgl; > + sg_count = cmd_request->bounce_sgl_count; > } > > request->DataBuffer.Offset = sgl[0].offset; > > - for (i = 0; i < scsi_sg_count(scmnd); i++) { > + for (i = 0; i < sg_count; i++) { > DPRINT_DBG(STORVSC_DRV, "sgl[%d] len %d offset %d\n", > i, sgl[i].length, sgl[i].offset); > - request->DataBuffer.PfnArray[i] = > - page_to_pfn(sg_page((&sgl[i]))); > + request->DataBuffer.PfnArray[i] =
Trailing space here?
You didn't run 'checkpatch.pl' now did you :)
You should set your editor to show up trailing spaces in bright red to keep this from happening. I can tell you how to do this in vim, all other editors, you are on your own.
thanks,
greg k-h
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