On Fri, May 19, 2017 at 11:30:12AM -0700, Bart Van Assche wrote: > This simplifies the memset() call in scsi_initialize_rq() and avoids > that any stale data is left behind in struct scsi_request. > > Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> > Cc: Christoph Hellwig <hch@xxxxxx> > Cc: Hannes Reinecke <hare@xxxxxxxx> > --- > drivers/scsi/scsi_lib.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c > index eeb668935836..791bae192bfb 100644 > --- a/drivers/scsi/scsi_lib.c > +++ b/drivers/scsi/scsi_lib.c > @@ -1160,11 +1160,9 @@ static void scsi_initialize_rq(struct request *rq) > void *buf = cmd->sense_buffer; > void *prot = cmd->prot_sdb; > > - /* zero out the cmd, except for the embedded scsi_request */ > - memset((char *)cmd + sizeof(cmd->req), 0, > - sizeof(*cmd) - sizeof(cmd->req) + dev->host->hostt->cmd_size); > + memset(cmd, 0, blk_queue_cmd_size(rq->q)); > scsi_req_init(&cmd->req); > - cmd->req.sense = cmd->sense_buffer; > + cmd->req.sense = buf; > cmd->device = dev; > cmd->sense_buffer = buf; maybe move the two sense buffer initializations together? Otherwise this looks fine: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
