Hi, Rumor has it that on Fri, Feb 18, 2005 at 02:59:32PM +0100 Jens Axboe said: > On Fri, Feb 18 2005, Philip R Auld wrote:
... > > Or make all users of submit_bio take and release and extra reference > > like submit_bh. > > The queue lock is still held at that point, so the driver hasn't had a > chance to process the request yet. Interesting. This is not a theoretical problem though. I've got traces of the oops showing the bio getting freed before the bio_sync(bio) test. When you say driver here what level do you mean? scsi_request_fn at least drops the queue lock. What if it's merged instead of added directly? That could also get to the same place. The end_io callback _is_ getting called before __make_request does its "if(bio_sync(bio))" test. Cheers, Phil > > -- > Jens Axboe -- Philip R. Auld, Ph.D. Egenera, Inc. Software Architect 165 Forest St. (508) 858-2628 Marlboro, MA 01752 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
