hello, In the source code,in order to collect multiple write requests,first add the requests to delayed_list, then use plug/unplug to wait.During the waiting time,if other requests arrive to full a stripe_head buffer, then compute parity and send write request to low level to deal. If not so, the requests will be set pre-read mark stripe_preread_active,then send pre-read request to low level. I want to know if up level send read request and later a write request arrive to write the same place of read request before, will the read request be canceled and return the data of write request? Best Regards Dong Wu -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
