X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fhugetlb.c;h=508707704d2cb714968a779e128084d640afc439;hb=e8788c0cce63e0cc8689a123d1ce0af1e28cd583;hp=ceb3ebb3c399e9e346c12b15a8411616f871d5db;hpb=eeb059e0a69369753b3e45426958f751f0b8fc89;p=linux-2.6

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ceb3ebb3c3..508707704d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -85,7 +85,7 @@ void free_huge_page(struct page *page)
 	BUG_ON(page_count(page));
 
 	INIT_LIST_HEAD(&page->lru);
-	page[1].mapping = NULL;
+	page[1].lru.next = NULL;			/* reset dtor */
 
 	spin_lock(&hugetlb_lock);
 	enqueue_huge_page(page);
@@ -105,9 +105,9 @@ struct page *alloc_huge_page(struct vm_area_struct *vma, unsigned long addr)
 	}
 	spin_unlock(&hugetlb_lock);
 	set_page_count(page, 1);
-	page[1].mapping = (void *)free_huge_page;
+	page[1].lru.next = (void *)free_huge_page;	/* set dtor */
 	for (i = 0; i < (HPAGE_SIZE/PAGE_SIZE); ++i)
-		clear_highpage(&page[i]);
+		clear_user_highpage(&page[i], addr);
 	return page;
 }
 
@@ -391,12 +391,7 @@ static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma,
 
 	if (!new_page) {
 		page_cache_release(old_page);
-
-		/* Logically this is OOM, not a SIGBUS, but an OOM
-		 * could cause the kernel to go killing other
-		 * processes which won't help the hugepage situation
-		 * at all (?) */
-		return VM_FAULT_SIGBUS;
+		return VM_FAULT_OOM;
 	}
 
 	spin_unlock(&mm->page_table_lock);
@@ -444,15 +439,7 @@ retry:
 		page = alloc_huge_page(vma, address);
 		if (!page) {
 			hugetlb_put_quota(mapping);
-			/*
-		 	 * No huge pages available. So this is an OOM
-			 * condition but we do not want to trigger the OOM
-			 * killer, so we return VM_FAULT_SIGBUS.
-			 *
-			 * A program using hugepages may fault with Bus Error
-			 * because no huge pages are available in the cpuset, per
-			 * memory policy or because all are in use!
-			 */
+			ret = VM_FAULT_OOM;
 			goto out;
 		}