On Wed, Sep 14, 2016 at 11:54:38PM -0700, Dan Williams wrote: > The DAX property, page cache bypass, of a VMA is only detectable via the > vma_is_dax() helper to check the S_DAX inode flag. However, this is > only available internal to the kernel and is a property that userspace > applications would like to interrogate.
They have absolutely no business knowing such an implementation detail.
