Kashyap,
> Primary drawback of using "blk_mq_tagset_busy_iter" is API is only for > blk-mq and it is not available for all the kernel with blk-mq > support. We have seen multiple failures from customer and those > kernels does not support blk_mq_tagset_busy_iter. In fact, blk-mq and > non-mq stack is alive in many Linux distribution and customer is using > those. I'm afraid the burden falls upon Broadcom to manage enablement patches for older kernels. So the non-MQ/non-tagset-busy-iter cases are not particularly relevant for the discussion here. Let's focus on getting some usable plumbing that drivers can use to abort oustanding tags. -- Martin K. Petersen Oracle Linux Engineering
