queue-4.14/scsi-aacraid-fix-performance-issue-on-logical-drives.patch

   1 From 0015437cc046e5ec2b57b00ff8312b8d432eac7c Mon Sep 17 00:00:00 2001
   2 From: Sagar Biradar <sagar.biradar@microchip.com>
   3 Date: Thu, 7 Mar 2019 23:26:41 -0800
   4 Subject: scsi: aacraid: Fix performance issue on logical drives
   5
   6 From: Sagar Biradar <sagar.biradar@microchip.com>
   7
   8 commit 0015437cc046e5ec2b57b00ff8312b8d432eac7c upstream.
   9
  10 Fix performance issue where the queue depth for SmartIOC logical volumes is
  11 set to 1, and allow the usual logical volume code to be executed
  12
  13 Fixes: a052865fe287 (aacraid: Set correct Queue Depth for HBA1000 RAW disks)
  14 Cc: stable@vger.kernel.org
  15 Signed-off-by: Sagar Biradar <Sagar.Biradar@microchip.com>
  16 Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
  17 Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19
  20 ---
  21  drivers/scsi/aacraid/linit.c |   13 ++++++++-----
  22  1 file changed, 8 insertions(+), 5 deletions(-)
  23
  24 --- a/drivers/scsi/aacraid/linit.c
  25 +++ b/drivers/scsi/aacraid/linit.c
  26 @@ -413,13 +413,16 @@ static int aac_slave_configure(struct sc
  27         if (chn < AAC_MAX_BUSES && tid < AAC_MAX_TARGETS && aac->sa_firmware) {
  28                 devtype = aac->hba_map[chn][tid].devtype;
  29
  30 -               if (devtype == AAC_DEVTYPE_NATIVE_RAW)
  31 +               if (devtype == AAC_DEVTYPE_NATIVE_RAW) {
  32                         depth = aac->hba_map[chn][tid].qd_limit;
  33 -               else if (devtype == AAC_DEVTYPE_ARC_RAW)
  34 +                       set_timeout = 1;
  35 +                       goto common_config;
  36 +               }
  37 +               if (devtype == AAC_DEVTYPE_ARC_RAW) {
  38                         set_qd_dev_type = true;
  39 -
  40 -               set_timeout = 1;
  41 -               goto common_config;
  42 +                       set_timeout = 1;
  43 +                       goto common_config;
  44 +               }
  45         }
  46
  47         if (aac->jbod && (sdev->type == TYPE_DISK))