On Fri, Sep 09, 2016 at 05:21:40PM +0000, Kani, Toshimitsu wrote: > On Fri, 2016-09-09 at 15:36 +0300, Kirill A. Shutemov wrote: > > On Thu, Sep 08, 2016 at 11:21:46PM +0000, Kani, Toshimitsu wrote: > > > > > > On Thu, 2016-09-08 at 07:48 -0600, Kani, Toshimitsu wrote: > > > > > > > > On Thu, 2016-09-08 at 13:57 +0300, Kirill A. Shutemov wrote: > > > > > > > > > > On Mon, Aug 29, 2016 at 10:00:43PM +0000, Kani, Toshimitsu > > > > > wrote: > > > : > > > > > > Looking further, these shmem_huge handlings only check pre- > > > > > > conditions. So, we should be able to make shmem_get_unmapped > > > > > > _are a() as a wrapper, which checks such shmem-specific > > > > > > conitions, and then call __thp_get_unmapped_area() for the > > > > > > actual work. All DAX-specific checks are performed in > > > > > > thp_get_unmapped_area() as well. We can make > > > > > > __thp_get_unmapped_area() as a common > > > > > > function. > > > > > > > > > > > > I'd prefer to make such change as a separate item, > > > > > > > > > > Do you have plan to submit such change? > > > > > > > > Yes, I will submit the change once I finish testing. > > > > > > I found a bug in the current code, and need some clarification. > > > The if-statement below is reverted. > > > > <two-hands-facepalm> > > > > Yeah. It was repored by Hillf[1]. The fixup got lost. :( > > > > Could you post a proper patch with the fix? > > > > I would be nice to credit Hillf there too. > > > > [1] http://lkml.kernel.org/r/054f01d1c86f$2994d5c0$7cbe8140$@alibaba- > > inc.com > > Yes, I will submit the fix as well. > > I will not change the default value of sbinfo->huge in this fix. So, > user will have to specify "huge=" option to enable huge page mappings. > If this is not desireable, we will need a separate patch. That's okay. I only screwed up part wich make vma aligned. Allocation of huge page happens under right condition. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>