Merge commit 'v2.6.35' into perf/core

Conflicts:
	tools/perf/Makefile
	tools/perf/util/hist.c

Merge reason: Resolve the conflicts and update to latest upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 13 insertions, 3 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 119b7ccdf39b..bde42c6d3633 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1394,10 +1394,20 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                 return i ? : -EFAULT;
                         }
                         if (pages) {
-                                struct page *page = vm_normal_page(gate_vma, start, *pte);
+                                struct page *page;
+
+                                page = vm_normal_page(gate_vma, start, *pte);
+                                if (!page) {
+                                        if (!(gup_flags & FOLL_DUMP) &&
+                                             is_zero_pfn(pte_pfn(*pte)))
+                                                page = pte_page(*pte);
+                                        else {
+                                                pte_unmap(pte);
+                                                return i ? : -EFAULT;
+                                        }
+                                }
                                 pages[i] = page;
-                                if (page)
-                                        get_page(page);
+                                get_page(page);
                         }
                         pte_unmap(pte);
                         if (vmas)