Re: [PATCH] mm: tracking dirty pages -v6

[Peter Zijlstra]

If this one still has some problems there is on more thing we could try
before going back to the old way of doing things.

I found this 'gem' in the drm code:

        vma->vm_page_prot =
            __pgprot(pte_val
                     (pte_wrprotect
                      (__pte(pgprot_val(vma->vm_page_prot)))));

which does exactly what is needed.

OTOH, my alternate version of the mprotect fix leaves dirty pages
writable, which saves a few faults.

Peter

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/