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@@ -43,34 +43,31 @@ void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud)
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#endif /* PAGETABLE_LEVELS > 3 */
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#endif /* PAGETABLE_LEVELS > 2 */
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-#ifdef CONFIG_X86_64
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static inline void pgd_list_add(pgd_t *pgd)
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{
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struct page *page = virt_to_page(pgd);
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- unsigned long flags;
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- spin_lock_irqsave(&pgd_lock, flags);
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list_add(&page->lru, &pgd_list);
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- spin_unlock_irqrestore(&pgd_lock, flags);
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}
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static inline void pgd_list_del(pgd_t *pgd)
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{
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struct page *page = virt_to_page(pgd);
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- unsigned long flags;
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- spin_lock_irqsave(&pgd_lock, flags);
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list_del(&page->lru);
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- spin_unlock_irqrestore(&pgd_lock, flags);
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}
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+#ifdef CONFIG_X86_64
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pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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unsigned boundary;
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pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
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+ unsigned long flags;
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if (!pgd)
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return NULL;
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+ spin_lock_irqsave(&pgd_lock, flags);
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pgd_list_add(pgd);
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+ spin_unlock_irqrestore(&pgd_lock, flags);
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/*
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* Copy kernel pointers in from init.
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* Could keep a freelist or slab cache of those because the kernel
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@@ -86,8 +83,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
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void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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+ unsigned long flags;
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BUG_ON((unsigned long)pgd & (PAGE_SIZE-1));
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+ spin_lock_irqsave(&pgd_lock, flags);
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pgd_list_del(pgd);
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+ spin_unlock_irqrestore(&pgd_lock, flags);
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free_page((unsigned long)pgd);
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}
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#else
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@@ -101,20 +101,6 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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* vmalloc faults work because attached pagetables are never freed.
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* -- wli
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*/
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-static inline void pgd_list_add(pgd_t *pgd)
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-{
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- struct page *page = virt_to_page(pgd);
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-
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- list_add(&page->lru, &pgd_list);
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-}
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-
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-static inline void pgd_list_del(pgd_t *pgd)
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-{
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- struct page *page = virt_to_page(pgd);
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-
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- list_del(&page->lru);
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-}
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-
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#define UNSHARED_PTRS_PER_PGD \
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(SHARED_KERNEL_PMD ? USER_PTRS_PER_PGD : PTRS_PER_PGD)
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