From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: [PATCH 11/14] IB/srp: Fail SCSI commands silently Date: Wed, 12 Jun 2013 15:33:10 +0200 Message-ID: <51B87896.8020008@acm.org> References: <51B87501.4070005@acm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <51B87501.4070005-HInyCGIudOg@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Roland Dreier Cc: David Dillow , Vu Pham , Sebastian Riemer , linux-rdma List-Id: linux-rdma@vger.kernel.org From: Sebastian Riemer Avoid that path failover in a multipath setup causes the SCSI layer to generate kernel messages about SCSI command failures. This patch speeds up SRP initiator operation significantly when monitoring kernel messages over a serial port. [bvanassche: Changed patch description] Signed-off-by: Sebastian Riemer Signed-off-by: Bart Van Assche Cc: Roland Dreier Cc: David Dillow Cc: Vu Pham --- drivers/infiniband/ulp/srp/ib_srp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 7cf44e1..dbedac9 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -787,6 +787,7 @@ static void srp_finish_req(struct srp_target_port *target, if (scmnd) { srp_free_req(target, req, scmnd, 0); + scmnd->request->cmd_flags |= REQ_QUIET; scmnd->result = result; scmnd->scsi_done(scmnd); } @@ -1467,6 +1468,7 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd) result = srp_chkready(target->rport); if (unlikely(result)) { + scmnd->request->cmd_flags |= REQ_QUIET; scmnd->result = result; scmnd->scsi_done(scmnd); return 0; @@ -1868,6 +1870,7 @@ static int srp_abort(struct scsi_cmnd *scmnd) else ret = FAILED; srp_free_req(target, req, scmnd, 0); + scmnd->request->cmd_flags |= REQ_QUIET; scmnd->result = DID_ABORT << 16; scmnd->scsi_done(scmnd); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html