Hi all, This is a roll-up of all of my uncommitted patches against libsas and aic94xx to date. There is only one new patch since last month, which makes aic94xx work with the async SCSI scanning code. [excerpt from last month's message] It has been a while since I posted the last batch of patches against libsas and aic94xx. In that time, we've been working with Adaptec engineers to stabilize the driver under disk stress workloads and reboot tests, and these patches represent the results of this work and a few other cleanups that have been made along the way. Each patch has its own preamble description, but I'd like to call attention to two of the larger shifts. Adaptec's sequencer engineers pointed out that a few of the assumptions that I made about SCB return were invalid, which forced me to rewrite much of the REQ_TASK_ABORT and REQ_DEVICE RESET code to move all of the ABORT TASK code into the SAS EH. By concentrating all error handling in the EH, the REQ_TASK_ABORT case is less efficient, but the race conditions and other strange nits that I'd been seeing went away. In particular, libsas now handles the case where a sas_task causes the controller to send both a REQ_TASK_ABORT ESCB and a CHECK CONDITION SCB response. These changes are in patches 10-13. The second major set of changes (14-16) fix the insmod/rmmod and pounder stability problems by performing correct device memory initialization and locking device descriptor updates to avoid corrupting the controller memory. These patches should apply in number order cleanly against 2.6.20-rc4 + scsi_misc + scsi-rc-fixes. We've been running insmod/rmmod and pounder tests on x260, x206m and x366 machines for several days without problems. Hopefully these patches are ready for more widespread testing. (Apologies for any stgit mail misconfiguration on my part.) --D - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
