No. You only give user space write access when the write access _and_
"Linux dirty bit" are set. This means you fault when user space tries
to write to the page, which means you can set the dirty bit. This is
what the following code is doing (if write_access is required and the
pte already has write permission, then set the dirty bit):
if (write_access) {
if (!pte_write(entry))
return do_wp_page(mm, vma, address, pte, pmd, entry);
entry = pte_mkdirty(entry);
}
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/