On Mon, Feb 21, 2022 at 01:07:35AM +0800, Eryu Guan wrote: > On Wed, Feb 16, 2022 at 11:05:35AM +0100, Gabriel Niebler wrote: > > In its current implementation, the test btrfs/255 would hang forever > > on any kernel w/o patch "btrfs: fix deadlock between quota disable > > and qgroup rescan worker", rather than failing, as it should. > > Fix this by introducing generous timeouts. > > > > Signed-off-by: Gabriel Niebler <gniebler@xxxxxxxx> > > If deadlock was already triggered, I don't think killing the userspace > program with timeout will help, as the kernel already deadlocked, and > filesystem and/or device can't be used by next test either. > > I think we should just exclude the test when running tests on unpatched > kernel. I don't see a way how to detect it at runtime, or do you mean to use the expunge files?