On 06/24/2015 08:33 AM, Vlastimil Babka wrote:
> On 06/22/2015 03:37 AM, Rik van Riel wrote:
>> On 06/21/2015 02:11 PM, Kirill A. Shutemov wrote:
>>> On Sat, Jun 20, 2015 at 02:28:06PM +0300, Ebru Akagunduz wrote:
+ __collapse_huge_page_swapin(mm, vma, address, pmd, pte);
+
>>>
>>> And n
On 06/22/2015 03:37 AM, Rik van Riel wrote:
> On 06/21/2015 02:11 PM, Kirill A. Shutemov wrote:
>> On Sat, Jun 20, 2015 at 02:28:06PM +0300, Ebru Akagunduz wrote:
>>> + __collapse_huge_page_swapin(mm, vma, address, pmd, pte);
>>> +
>>
>> And now the pages we swapped in are not isolated, right?
>
On 06/21/2015 02:11 PM, Kirill A. Shutemov wrote:
> On Sat, Jun 20, 2015 at 02:28:06PM +0300, Ebru Akagunduz wrote:
>> +static void __collapse_huge_page_swapin(struct mm_struct *mm,
>> +struct vm_area_struct *vma,
>> +unsigned
On Sun, Jun 21, 2015 at 09:11:31PM +0300, Kirill A. Shutemov wrote:
> On Sat, Jun 20, 2015 at 02:28:06PM +0300, Ebru Akagunduz wrote:
> > + /* pte is unmapped now, we need to map it */
> > + pte = pte_offset_map(pmd, _address);
>
> No, it's within the same pte p
On Sat, Jun 20, 2015 at 02:28:06PM +0300, Ebru Akagunduz wrote:
> This patch makes swapin readahead to improve thp collapse rate.
> When khugepaged scanned pages, there can be a few of the pages
> in swap area.
>
> With the patch THP can collapse 4kB pages into a THP when
> there are up to max_pte
This patch makes swapin readahead to improve thp collapse rate.
When khugepaged scanned pages, there can be a few of the pages
in swap area.
With the patch THP can collapse 4kB pages into a THP when
there are up to max_ptes_swap swap ptes in a 2MB range.
The patch was tested with a test program t
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