On Wed, Aug 30, 2017 at 05:29:50PM +1000, Dave Chinner wrote: > Quick patch below, doesn't work on reflink filesystems yet because > the way it handles cached COW mapping invalidation is unnecessarily > special and so doesn't work. Can you test it and see if it fixes the > problem? FYI, I thought about this problem a while ago in the context of rcu lookups of the extent tree (not, I'm not doing those quite yet, but I though of the possibilities once we've got a btree!) and then my answer was that we'd really need a seqlock around uses of the imaps. I didn't think far enough that we might need something like that even now.. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
