On Fri, 5 Oct 2018 15:45:26 +1000 Dave Chinner <david@xxxxxxxxxxxxx> wrote: > From: Dave Chinner <dchinner@xxxxxxxxxx> > > We've recently seen a workload on XFS filesystems with a repeatable > deadlock between background writeback and a multi-process > application doing concurrent writes and fsyncs to a small range of a > file. > > ... > > Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx> > Reviewed-by: Jan Kara <jack@xxxxxxx> Not a serious enough problem for a -stable backport?