scsi: megaraid_sas: Retry with reduced queue depth when alloc fails for higher QD

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In certain cases, the host memory is limited and with FW supporting
higher queue depths there are increasing chances of IO request frame
allocation failures that we are seeing. In case of request frame
allocation failures, retry allocation with reduced queue depth (in steps
of 64) to continue to configure the controller with a reduced
performance rather than failing load.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Shivasharan S 2017-10-19 02:49:03 -07:00 • committed by Martin K. Petersen

parent 82add4e1b3

commit e97e673ca6

2 changed files with 68 additions and 39 deletions

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106

drivers/scsi/megaraid/megaraid_sas_fusion.c

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1

drivers/scsi/megaraid/megaraid_sas_fusion.h

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