Messages in this thread | | | Date | Wed, 13 Dec 2017 16:04:53 +0100 | From | Peter Zijlstra <> | Subject | Re: [patch 05/16] mm: Allow special mappings with user access cleared |
| |
On Wed, Dec 13, 2017 at 04:00:07PM +0100, Peter Zijlstra wrote: > On Wed, Dec 13, 2017 at 05:43:39PM +0300, Kirill A. Shutemov wrote: > > > am I perchance looking at the wrong tee? > > > > I'm looking at Linus' tree. > > Clearly I'm not synced up enough... :/ > > > It was changed recently: > > 5c9d2d5c269c ("mm: replace pte_write with pte_access_permitted in fault + gup paths") > > > > Indeed. So FOLL_GET should also get these tests and, as you said, the > other levels too. > > I would like FOLL_POPULATE (doesn't have FOLL_GET) to be allowed > 'access'.
Similarly, should we avoid arch_vma_access_permitted() if !FOLL_GET ?
| |