Re: [PATCH v2-UPDATE 3/3] xfs: Add alignment check for DAX mount

[Christoph Hellwig]

>  	if (mp->m_flags & XFS_MOUNT_DAX) {
> +		struct blk_dax_ctl dax = {
> +			.sector = 0,
> +			.size = PAGE_SIZE,
> +		};

I'm pretty sure I already complained last week, but this boiler plate
code has no business in every file systems.  Also it seems to me like
this struct blk_dax_ctl calling convention is stupid to start with,
why not pass the arguments directly and avoid the boilerplate code
everywhere?