mm: soft-offline: dissolve free hugepage if soft-offlined

Now we have code to rescue most of healthy pages from a hwpoisoned
hugepage.  So let's apply it to soft_offline_free_page too.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Naoya Horiguchi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: Naoya Horiguchi

mm/memory-failure.c

@@ -1697,7 +1697,7 @@ static void soft_offline_free_page(struct page *page)
 	if (!TestSetPageHWPoison(head)) {
 		num_poisoned_pages_inc();
 		if (PageHuge(head))
-			dequeue_hwpoisoned_huge_page(head);
+			dissolve_free_huge_page(page);
 	}
 }