[PATCH] mm, hugetlb: set PageLRU for in-use/active hugepages

Currently we are not safe from concurrent calls of isolate_huge_page(), which can make the victim hugepage in invalid state and results in BUG_ON(). The root problem of this is that we don't have any information on struct page (so easily accessible) about the hugepage's activeness. Note that

[PATCH] mm, hugetlb: set PageLRU for in-use/active hugepages

Currently we are not safe from concurrent calls of isolate_huge_page(), which can make the victim hugepage in invalid state and results in BUG_ON(). The root problem of this is that we don't have any information on struct page (so easily accessible) about the hugepage's activeness. Note that