On Wed, Apr 04, 2018 at 07:48:23AM -0700, Dan Williams wrote: > On Wed, Apr 4, 2018 at 7:37 AM, Xiong Zhou <xz...@redhat.com> wrote: > > Hi, > > > > It works fine in memory mode. Both tested on latest Linus tree with xfs. > > > > Referring https://nvdimm.wiki.kernel.org/2mib_fs_dax > > > > Did I miss anything? > > No, this behavior is by design. See commit ee82c9ed41e8 "dax: disable > pmd mappings". The short summary is that struct page is needed to > support get_user_pages() on dax pmd mappings, and raw mappings do not > provide struct page.
Thanks very much Dan! > > Details here: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee82c9ed41e8 _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm
