4.5 merge window part 2

Posted Jan 26, 2016 21:41 UTC (Tue) by willy (subscriber, #9762)
Parent article: 4.5 merge window part 2

Minor clarification; you could already do O_DIRECT to/from a file on a DAX filesystem. What didn't work was mmap() a file on a DAX filesystem, and then do O_DIRECT between that mapping and a file on a non-DAX filesystem.