On 17 Nov 2020, at 16:10, Matthew Wilcox wrote:
> On Wed, Nov 11, 2020 at 03:40:05PM -0500, Zi Yan wrote:
>> - for (i = 0; i < nr; i++) {
>> + for (i = 0; i < nr; i += (1 << new_order)) {
>> page_owner = get_page_owner(page_ext);
>> - page_owner->order = 0;
>> + page_owner->order = new_order;
>> page_ext = page_ext_next(page_ext);
>> }
>
> This doesn't do what you're hoping it will. It's going to set ->order to
> new_order for the first N pages instead of every 1/N pages.
>
> You'll need to do something like
>
> page_ext = lookup_page_ext(page + i);
Will use this. Thanks.
>
> or add a new page_ext_add(page_ext, 1 << new_order);
—
Best Regards,
Yan Zi
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