On Wed, Apr 16, 2014 at 07:52:29AM +0800, Bob Liu wrote: > > *ptl = pmd_lock(mm, pmd); > > - if (pmd_none(*pmd)) > > + if (!pmd_present(*pmd)) > > goto unlock; > > But I didn't get the idea why pmd_none() was removed?
!pmd_present(*pmd) is weaker check then pmd_none(*pmd). I mean if pmd_none(*pmd) is true then pmd_present(*pmd) is always false. Correct me if I'm wrong. -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
