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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2012-07-31 16:42:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 18:42:41 -0700
commit79dbb2368ae3515fad9c8b7c8f831cd86be59b1d (patch)
treec25369353f439d2af5b78899cb91c43520ea48d3 /mm
parent585e27ea6d2e71d0091443c39a00a35e6a5c5e8f (diff)
downloadop-kernel-dev-79dbb2368ae3515fad9c8b7c8f831cd86be59b1d.zip
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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>
Diffstat (limited to 'mm')
-rw-r--r--mm/hugetlb.c11
1 files changed, 10 insertions, 1 deletions
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 @@ 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);
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