On Tue, Aug 28, 2012 at 03:28:00PM -0700, Kent Overstreet wrote: > On Tue, Aug 28, 2012 at 01:49:10PM -0700, Tejun Heo wrote: > > Overall, I *think* this is correct but need to think more about it to > > be sure. > > Please do. As much time as I've spent staring at this kind of stuff, > I'm pretty sure I've got it correct but it still makes my head hurt to > work out all the various possible deadlocks. Hilarious thought: We're punting bios to a rescuer thread that's specific to a certain bio_set, right? What if we happen to punt bios from a different bio_set? And then the rescuer goes to resubmit those bios, and in the process they happen to have dependencies on the original bio_set... I think it's actually necessary to filter out only bios from the current bio_set to punt to the rescuer. God I love the block layer sometimes. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
