>>>>> "Bernd" == Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx> writes: Bernd> And I also don't see any driver setting max_ws_blocks, so Bernd> everything except of libata gets the default of Bernd> SD_MAX_WS10_BLOCKS. Yes. That's intentional. Unless the device provides MAXIMUM WRITE SAME BLOCKS in the BLOCK LIMITS VPD. Bernd> As the correct handling in the md layer seems to be difficult, Bernd> can we send a fake request at device configuration time to figure Bernd> out if the device really support write-same? The problem is that WRITE SAME is destructive. And unfortunately a block count of 0 means "write entire device". -- Martin K. Petersen Oracle Linux Engineering -- 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
