John, > All other libsas drivers manage the tags internally. Tag management in > pm8001 and mvsas is currently using a simple bitmap, so use the > request tag when available there. With this change we still need to > manage tags for libsas "internal" commands, like SMP commands, and any > other private commands so reserve some tags for this: > - For pm8001 I went with pre-existing and unused PM8001_RESERVE_SLOT > size. The value is 8, which should be enough. It is greater than > mvsas, below, but this driver sends a lot of other private commands to > HW. > - For mvsas I went with 4, which still should be enough. > > isci and aic9xx have elaborate tag alloc schemes, so I'm not going to > bother changing them, especially since I have no HW to test with. > > Helper sas_task_find_rq() is added to get the request and associated > tag per sas_task when it is available. Applied to 6.2/scsi-staging, thanks! -- Martin K. Petersen Oracle Linux Engineering
