Re: [PATCH v15 6/7] ext4: disable map_sync for async flush

From: Theodore Ts'o
Date: Sun Jul 07 2019 - 12:36:27 EST

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>