Re: [PATCH V3] blk-mq: fix race between complete and BLK_EH_RESET_TIMER

On Fri, 2018-04-13 at 21:06 -0600, Jens Axboe wrote:

I like this approach since it keeps the cost outside of the fast path. And it's fine to reuse the queue lock for this, instead of adding a special lock for something we consider a rare occurrence.

From a quick look this looks sane, but I'll take a closer look tomrrow and add some testing too.

Shouldn't we know the root cause of the "RIP: scsi_times_out+0x17" crash reported in https://bugzilla.kernel.org/show_bug.cgi?id=199077 before we decide how to proceed?

Thanks,

Bart.