On Wed, Dec 20, 2006 at 12:50:02PM -0500, Kiyoshi Ueda wrote: > Because I'd like to use blk_get_request() in q->request_fn() > which can be called from interrupt context like below: > scsi_io_completion -> scsi_end_request -> scsi_next_command > -> scsi_run_queue -> blk_run_queue -> q->request_fn > Or request should not be allocated in q->request_fn() anyway? > Do you have any other ideas? The right long-term fix is to make sure request_fn is only ever called from process context. This means moving retry handling to a thread instead of a softirq, but this will need careful performance testing and tweaking. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
