On Wed, 2018-03-28 at 16:43 +0800, Wen Yang wrote: > There would be so many same lines printed by frequent prink if one > disk went wrong, like, > [ 546.185242] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185258] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185280] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185307] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185334] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185364] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185390] sd 0:1:0:0: rejecting I/O to offline device > [ 546.185410] sd 0:1:0:0: rejecting I/O to offline device > For slow serial console, the frequent prink may block the printk, and > if spin_lock was acquired before the printk like in scsi_request_fn, > that could trigger the watchdog. > > Relative disscussion can be found here, ^^^^^^^^ Related? Anyway: Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>
