On Thu, Sep 07, 2017 at 03:08:31PM -0600, Ross Zwisler wrote: > Before support for the per-inode DAX flag was disabled the XFS the code had > an issue where the user couldn't reliably tell whether or not DAX was being > used to service page faults and I/O when the DAX mount option was used. In > this case each inode within the mounted filesystem started with S_DAX set > due to the mount option, but it could be cleared if someone touched the > individual inode flag. Looks good, but can you please add a testcase to xfstests for this? Reviewed-by: Christoph Hellwig <hch@xxxxxx>