On Fri, May 05, 2017 at 09:24:56AM +0200, Jan Kara wrote: > Hello, > > this series fixes data corruption that can happen for DAX mounts when > page faults race with write(2) and as a result page tables get out of sync > with block mappings in the filesystem and thus data seen through mmap is > different from data seen through read(2). > > The series passes testing with t_mmap_stale test program from Ross and also > other mmap related tests on DAX filesystem. Ross, what you think? I don't know if I have enough ext4-fu to properly review patch 3, but the rest looks great (and that patch looks good to me as well, FWIW). Thanks for fixing this!