On Wed, Apr 15, 2015 at 1:45 AM, Ingo Molnar <mi...@kernel.org> wrote: > > * Dan Williams <dan.j.willi...@intel.com> wrote: > >> > None of this gives me warm fuzzy feelings... >> > >> > ... has anyone explored the possibility of putting 'struct page' >> > into the pmem device itself, essentially using it as metadata? >> >> Yes, the impetus for proposing the pfn conversion of the block layer >> was the consideration that persistent memory may have less write >> endurance than DRAM. The kernel preserving write endurance >> exclusively for user data and the elimination of struct page >> overhead motivated the patchset [1]. >> >> [1]: https://lwn.net/Articles/636968/ > > (Is there a Git URL where I could take a look at these patches?)
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm evacuate-struct-page-v1 Note that the bulk of the change is automated via Coccinelle. For v2, I'm looking at enabling a kmap primitive to operate on a pfn_t, kmap_pfn(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
