On Thu, Dec 17, 2020 at 2:54 PM Muchun Song wrote:
>
> On Thu, Dec 17, 2020 at 6:52 AM Mike Kravetz wrote:
> >
> > On 12/16/20 2:25 PM, Oscar Salvador wrote:
> > > On Wed, Dec 16, 2020 at 02:08:30PM -0800, Mike Kravetz wrote:
> > >>> + * vmemmap_rmap_walk - walk vmemmap page table
> > >>> +
> > >
On Thu, Dec 17, 2020 at 6:52 AM Mike Kravetz wrote:
>
> On 12/16/20 2:25 PM, Oscar Salvador wrote:
> > On Wed, Dec 16, 2020 at 02:08:30PM -0800, Mike Kravetz wrote:
> >>> + * vmemmap_rmap_walk - walk vmemmap page table
> >>> +
> >>> +static void vmemmap_pte_range(pmd_t *pmd, unsigned long addr,
>
On Thu, Dec 17, 2020 at 6:08 AM Mike Kravetz wrote:
>
> On 12/13/20 7:45 AM, Muchun Song wrote:
> > Every HugeTLB has more than one struct page structure. We __know__ that
> > we only use the first 4(HUGETLB_CGROUP_MIN_ORDER) struct page structures
> > to store metadata associated with each HugeTL
On 12/16/20 2:25 PM, Oscar Salvador wrote:
> On Wed, Dec 16, 2020 at 02:08:30PM -0800, Mike Kravetz wrote:
>>> + * vmemmap_rmap_walk - walk vmemmap page table
>>> +
>>> +static void vmemmap_pte_range(pmd_t *pmd, unsigned long addr,
>>> + unsigned long end, struct vmemmap_rma
On Wed, Dec 16, 2020 at 02:08:30PM -0800, Mike Kravetz wrote:
> > + * vmemmap_rmap_walk - walk vmemmap page table
>
> I am not sure if 'rmap' should be part of these names. rmap today is mostly
> about reverse mapping lookup. Did you use rmap for 'remap', or because this
> code is patterned afte
On 12/13/20 7:45 AM, Muchun Song wrote:
> Every HugeTLB has more than one struct page structure. We __know__ that
> we only use the first 4(HUGETLB_CGROUP_MIN_ORDER) struct page structures
> to store metadata associated with each HugeTLB.
>
> There are a lot of struct page structures associated wi
On Wed, Dec 16, 2020 at 9:06 PM Oscar Salvador wrote:
>
> On Sun, Dec 13, 2020 at 11:45:26PM +0800, Muchun Song wrote:
> > +
> > +/*
> > + * vmemmap_rmap_walk - walk vmemmap page table
> > + *
> > + * @rmap_pte:called for each non-empty PTE (lowest-level)
> > entry.
> > + * @reuse
On Sun, Dec 13, 2020 at 11:45:26PM +0800, Muchun Song wrote:
> +
> +/*
> + * vmemmap_rmap_walk - walk vmemmap page table
> + *
> + * @rmap_pte:called for each non-empty PTE (lowest-level)
> entry.
> + * @reuse: the page which is reused for the tail vmemmap pages.
> + * @v
Every HugeTLB has more than one struct page structure. We __know__ that
we only use the first 4(HUGETLB_CGROUP_MIN_ORDER) struct page structures
to store metadata associated with each HugeTLB.
There are a lot of struct page structures associated with each HugeTLB
page. For tail pages, the value of
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