On Thu, Aug 27, 2015 at 02:33:07PM +0530, Vineet Gupta wrote:
> +pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
> +{
> + struct list_head *lh;
> + pgtable_t pgtable;
> + pte_t *ptep;
> +
> + assert_spin_locked(&mm->page_table_lock);
> +
> + pgtable = pmd_huge_pte(mm, pmdp);
> + lh = (struct list_head *) pgtable;
> + if (list_empty(lh))
> + pmd_huge_pte(mm, pmdp) = (pgtable_t) NULL;
> + else {
> + pmd_huge_pte(mm, pmdp) = (pgtable_t) lh->next;
> + list_del(lh);
> + }
Side question: why pgtable_t is unsigned long on ARC and not struct page *
or pte_t *, like on other archs? We could avoid these casts.
--
Kirill A. Shutemov
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