On Tue, Sep 23, 2014 at 02:01:41AM -0400, Tejun Heo wrote: > On Tue, Sep 23, 2014 at 07:59:24AM +0200, Christoph Hellwig wrote: > > "[PATCHSET percpu/for-3.18] percpu_ref: implement switch_to_atomic/percpu()" > > > > looks way to big for 3.17, and the regression was introduced in the 3.17 > > merge window. I'm not sure what was broken before, but it defintively > > survived a lot of testing. > > Do we even care about fixing it for 3.17? scsi-mq isn't enabled by > default even for 3.18. The open-coded percpu ref thing was subtly > broken there. It'd be difficult to trigger but I'm fairly sure it'd > crap out in the wild once in a blue moon.
Hmmm... also, this is actually an issue with scsi that block layer is working around. For other drivers (virtio), the latency during shutdown should be completely fine. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
