scsi: cxlflash: Use local mutex for AFU serialization

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AFUs can only process a single AFU command at a time. This is enforced with
a global mutex situated within the AFU send routine. As this mutex has a
global scope, it has the potential to unnecessarily block commands destined
for other AFUs.

Instead of using a global mutex, transition the mutex to be per-AFU. This
will allow commands to only be blocked by siblings of the same AFU.

Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Matthew R. Ochs 2018-05-11 14:05:37 -05:00 • committed by Martin K. Petersen

parent 32a9ae415b

commit e63a8d886d

2 changed files with 4 additions and 3 deletions

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1

drivers/scsi/cxlflash/common.h

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6

drivers/scsi/cxlflash/main.c

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