On Tue, 16 Sep 2014, Hugh Dickins wrote: > On the page migration issue: it's not quite as straightforward as > Christoph suggests. He and I agree completely that mlocked pages > should be migratable, but some real-time-minded people disagree: > so normal compaction is still forbidden to migrate mlocked pages in > the vanilla kernel (though we in Google patch that prohibition out). > So pinning by refcount is no worse for compaction than mlocking, > in the vanilla kernel. Note though that compaction is not the only mechanism that uses page migration. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
