On Fri, 2013-08-09 at 18:26 +0900, Joonsoo Kim wrote: > Don't use the reserve pool when soft offlining a hugepage. > Check we have free pages outside the reserve pool before we > dequeue the huge page. Otherwise, we can steal other's reserve page. > > Reviewed-by: Aneesh Kumar <aneesh.ku...@linux.vnet.ibm.com> > Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com>
Reviewed-by: Davidlohr Bueso <davidl...@hp.com> > > diff --git a/mm/hugetlb.c b/mm/hugetlb.c > index 6782b41..d971233 100644 > --- a/mm/hugetlb.c > +++ b/mm/hugetlb.c > @@ -935,10 +935,11 @@ static struct page *alloc_buddy_huge_page(struct hstate > *h, int nid) > */ > struct page *alloc_huge_page_node(struct hstate *h, int nid) > { > - struct page *page; > + struct page *page = NULL; > > spin_lock(&hugetlb_lock); > - page = dequeue_huge_page_node(h, nid); > + if (h->free_huge_pages - h->resv_huge_pages > 0) > + page = dequeue_huge_page_node(h, nid); > spin_unlock(&hugetlb_lock); > > if (!page) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/