spinlock_t *ptl;
int swapped;
int err = -EFAULT;
+ unsigned long mmun_start; /* For mmu_notifiers */
+ unsigned long mmun_end; /* For mmu_notifiers */
addr = page_address_in_vma(page, vma);
if (addr == -EFAULT)
goto out;
BUG_ON(PageTransCompound(page));
+
+ mmun_start = addr;
+ mmun_end = addr + PAGE_SIZE;
+ mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end);
+
ptep = page_check_address(page, mm, addr, &ptl, 0);
if (!ptep)
- goto out;
+ goto out_mn;
if (pte_write(*ptep) || pte_dirty(*ptep)) {
pte_t entry;
out_unlock:
pte_unmap_unlock(ptep, ptl);
+out_mn:
+ mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
out:
return err;
}
spinlock_t *ptl;
unsigned long addr;
int err = -EFAULT;
+ unsigned long mmun_start; /* For mmu_notifiers */
+ unsigned long mmun_end; /* For mmu_notifiers */
addr = page_address_in_vma(page, vma);
if (addr == -EFAULT)
if (!pmd_present(*pmd))
goto out;
+ mmun_start = addr;
+ mmun_end = addr + PAGE_SIZE;
+ mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end);
+
ptep = pte_offset_map_lock(mm, pmd, addr, &ptl);
if (!pte_same(*ptep, orig_pte)) {
pte_unmap_unlock(ptep, ptl);
- goto out;
+ goto out_mn;
}
get_page(kpage);
pte_unmap_unlock(ptep, ptl);
err = 0;
+out_mn:
+ mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
out:
return err;
}