hugetlb: move all the in use pages to active list
When we fail to allocate pages from the reserve pool, hugetlb tries to
allocate huge pages using alloc_buddy_huge_page. Add these to the active
list. We also need to add the huge page we allocate when we soft offline
the oldpage to active list.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c57740bb2..ec7b86e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -928,8 +928,14 @@
page = dequeue_huge_page_node(h, nid);
spin_unlock(&hugetlb_lock);
- if (!page)
+ if (!page) {
page = alloc_buddy_huge_page(h, nid);
+ if (page) {
+ spin_lock(&hugetlb_lock);
+ list_move(&page->lru, &h->hugepage_activelist);
+ spin_unlock(&hugetlb_lock);
+ }
+ }
return page;
}
@@ -1155,6 +1161,9 @@
hugepage_subpool_put_pages(spool, chg);
return ERR_PTR(-ENOSPC);
}
+ spin_lock(&hugetlb_lock);
+ list_move(&page->lru, &h->hugepage_activelist);
+ spin_unlock(&hugetlb_lock);
}
set_page_private(page, (unsigned long)spool);