On Thu, 10 Jan 2019, Dave Chinner wrote: > Sounds nice from a theoretical POV, but reality has taught us very > different lessons. > > FWIW, a quick check of XFS's history so you understand how long this > behaviour has been around. It was introduced in the linux port in 2001 > as direct IO support was being added: > > commit e837eac23662afae603aaaef7c94bc839c1b8f67 > Author: Steve Lord <lord@xxxxxxx> > Date: Mon Mar 5 16:47:52 2001 +0000 > > Add bounds checking for direct I/O, do the cache invalidation for > data coherency on direct I/O. Out of curiosity, which repository is this from please? Even google doesn't seem to know about this SHA. Thanks, -- Jiri Kosina SUSE Labs