Sorry, forgot to CC the list. On Thu, Jun 09, 2011 at 09:40:11AM -0400, Christoph Hellwig wrote: > Hi Nick, > > can you explain what the rationale for the split between the > map_task* and do_task methods for the backend is? We run map_task* > fairly early, depending on the fabric possible in the callers context, > while do_task is run to finally execute the task. The map_task* > methods are only implemented by the iblock and pscsi backends, and > are used to prepare the bio or request. Both of these actually may > block (especially for pscsi when it hits the request limits) and thus > block any progress in the front-end thread. To me it would seem > much more logical to remove map_task* and always do these allocations > in do_task as well, just as we do everything there for the file backend. ---end quoted text--- -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
