On Wed, Feb 28, 2018 at 11:21:02AM +0300, Pavel Emelyanov wrote: > > > @@ -52,6 +53,7 @@ > > #define _UFFDIO_WAKE (0x02) > > #define _UFFDIO_COPY (0x03) > > #define _UFFDIO_ZEROPAGE (0x04) > > +#define _UFFDIO_WAKE_SYNC_EVENT (0x05) > > Excuse my ignorance, but what's the difference between UFFDIO_WAKE and UFFDIO_WAKE_SYNC_EVENT? UFFDIO_WAKE is used when UFFDIO_COPY/UFFDIO_ZERO page are used with UFFDIO_*_MODE_DONTWAKE flag set and it presumes 'struct uffdio_range' argument to the ioctl(). Since waking up a non page fault event requires different parameters I've add new ioctl to keep backwards compatibility. > -- Pavel > -- Sincerely yours, Mike. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
