Re: [RFC PATCH v3 2/3] mm: Add PUD level pagetable account

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On Sun, Jul 03, 2022 at 04:47:07AM +0100, Matthew Wilcox wrote:
> On Thu, Jun 30, 2022 at 07:11:15PM +0800, Baolin Wang wrote:
> > +++ b/arch/loongarch/include/asm/pgalloc.h
> > @@ -89,10 +89,15 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
> >  static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
> >  {
> >  	pud_t *pud;
> > +	struct page *page;
> >  
> > -	pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_ORDER);
> > -	if (pud)
> > -		pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
> > +	page = alloc_pages(GFP_KERNEL, PUD_ORDER);
> 
> Argh.  I just got rid of PMD_ORDER from PA-RISC.  Now Loongstupid has
> reintroduced it, and worse introduced PUD_ORDER.  See commit
> 7bf82eb3873f.

Let's try and deal with all those PxD_ORDERs for once.

https://lore.kernel.org/linux-arch/20220703141203.147893-1-rppt@xxxxxxxxxx/

-- 
Sincerely yours,
Mike.




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