On Fri, Jul 05, 2019 at 07:33:27PM +0530, Pankaj Gupta wrote: > Dont support 'MAP_SYNC' with non-DAX files and DAX files > with asynchronous dax_device. Virtio pmem provides > asynchronous host page cache flush mechanism. We don't > support 'MAP_SYNC' with virtio pmem and ext4. > > Signed-off-by: Pankaj Gupta <pagupta@xxxxxxxxxx> > Reviewed-by: Jan Kara <jack@xxxxxxx> Acked-by: Theodore Ts'o <tytso@xxxxxxx>