James/linux-scsi,
The following patch for megaraid_sas fixes the reglockFlags field for
degraded raid5/6 for MR9360/9380, which will result in a performance
improvement.
Signed-off-by: Adam Radford <aradford@xxxxxxxxx>
diff -Naur scsi-misc-2.6/drivers/scsi/megaraid/megaraid_sas_fp.c
scsi-misc-2.6.new/drivers/scsi/megaraid/megaraid_sas_fp.c
--- scsi-misc-2.6/drivers/scsi/megaraid/megaraid_sas_fp.c 2012-02-06
12:50:20.000000000 -0800
+++ scsi-misc-2.6.new/drivers/scsi/megaraid/megaraid_sas_fp.c 2012-01-06
14:58:15.364307850 -0800
@@ -282,7 +282,9 @@
else {
*pDevHandle = MR_PD_INVALID; /* set dev handle as invalid. */
if ((raid->level >= 5) &&
- (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER))
+ ((instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER &&
+ raid->regTypeReqOnRead != REGION_TYPE_UNUSED)))
pRAID_Context->regLockFlags = REGION_TYPE_EXCLUSIVE;
else if (raid->level == 1) {
/* Get alternate Pd. */
Attachment:
megaraid_sas.patch1
Description: Binary data
