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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>
This commit is contained in:
Aneesh Kumar K.V 2012-07-31 16:42:32 -07:00 committed by Linus Torvalds
parent 585e27ea6d
commit 79dbb2368a
1 changed files with 10 additions and 1 deletions
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11
mm/hugetlb.c
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@ -928,8 +928,14 @@ struct page *alloc_huge_page_node(struct hstate *h, int nid)
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 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma,
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);