if(is_write && !(vma->vm_flags & VM_WRITE))
goto out;
- if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
+ /* Don't require VM_READ|VM_EXEC for write faults! */
+ if(!is_write && !(vma->vm_flags & (VM_READ | VM_EXEC)))
goto out;
do {
pte = pte_offset_kernel(pmd, address);
} while(!pte_present(*pte));
err = 0;
- *pte = pte_mkyoung(*pte);
- if(pte_write(*pte)) *pte = pte_mkdirty(*pte);
+ WARN_ON(!pte_young(*pte) || (is_write && !pte_dirty(*pte)));
flush_tlb_page(vma, address);
out:
up_read(&mm->mmap_sem);