On Thu, Nov 26, 2020 at 12:43:00PM +, Matthew Wilcox wrote:
> On Thu, Nov 26, 2020 at 01:01:15PM +0100, Peter Zijlstra wrote:
> > +#ifdef CONFIG_GUP_GET_PTE_LOW_HIGH
> > +/*
> > + * WARNING: only to be used in the get_user_pages_fast() implementation.
> > + * With get_user_pages_fast(), we walk
On Thu, Nov 26, 2020 at 01:01:15PM +0100, Peter Zijlstra wrote:
> +#ifdef CONFIG_GUP_GET_PTE_LOW_HIGH
> +/*
> + * WARNING: only to be used in the get_user_pages_fast() implementation.
> + * With get_user_pages_fast(), we walk down the pagetables without taking any
> + * locks. For this we would li
In order to write another lockless page-table walker, we need
gup_get_pte() exposed. While doing that, rename it to
ptep_get_lockless() to match the existing ptep_get() naming.
Signed-off-by: Peter Zijlstra (Intel)
---
include/linux/pgtable.h | 55 +
