On Wed, Sep 02, 2015 at 06:05:17PM -0700, Justin Maggard wrote: > v2: Fix stupid error while making formatting changes...
I haven't noticed any difference between the patches, what exactly did you change? > I was hitting a consistent NULL pointer dereference during shutdown that > showed the trace running through end_workqueue_bio(). I traced it back to > the endio_meta_workers workqueue being poked after it had already been > destroyed. > > Eventually I found that the root cause was a qgroup rescan that was still > in progress while we were stopping all the btrfs workers. > > Currently we explicitly pause balance and scrub operations in > close_ctree(), but we do nothing to stop the qgroup rescan. We should > probably be doing the same for qgroup rescan, but that's a much larger > change. This small change is good enough to allow me to unmount without > crashing. > > Signed-off-by: Justin Maggard <jmagg...@netgear.com> Can you please submit the test you've used to trigger the crash to fstests? Reviewed-by: David Sterba <dste...@suse.com> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
