Re: [PATCH v7 8/8] fsdax: add exception for reflinked files

2021-10-14 Thread Christoph Hellwig
On Thu, Oct 14, 2021 at 12:24:50PM -0700, Darrick J. Wong wrote: > It feels a little dangerous to have page->mapping for shared storage > point to an actual address_space when there are really multiple > potential address_spaces out there. If the mm or dax folks are ok with > doing this this way t

Re: [PATCH v7 8/8] fsdax: add exception for reflinked files

2021-10-14 Thread Darrick J. Wong
On Fri, Sep 24, 2021 at 09:09:59PM +0800, Shiyang Ruan wrote: > For reflinked files, one dax page may be associated more than once with > different fime mapping and index. It will report warning. Now, since > we have introduced dax-RMAP for this case and also have to keep its > functionality for