Re: Problems with VM_MIXEDMAP removal from /proc//smaps

Christoph Hellwig
2018-10-02T14:45:48Z

On Tue, Oct 02, 2018 at 04:20:10PM +0200, Johannes Thumshirn wrote:
> Provide a F_GETDAX fcntl(2) command so an application can query
> whether it can make use of DAX or not.

How does an application "make use of DAX"? What actual user visible
semantics are associated with a file that has this flag set?