nommu: fix error handling in do_mmap_pgoff()

[pandora-kernel.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index dea7abd..94e86dd 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -630,9 +630,14 @@ static unsigned long shrink_page_list(struct list_head *page_list,
 
                referenced = page_referenced(page, 1,
                                                sc->mem_cgroup, &vm_flags);
-               /* In active use or really unfreeable?  Activate it. */
+               /*
+                * In active use or really unfreeable?  Activate it.
+                * If page which have PG_mlocked lost isoltation race,
+                * try_to_unmap moves it to unevictable list
+                */
                if (sc->order <= PAGE_ALLOC_COSTLY_ORDER &&
-                                       referenced && page_mapping_inuse(page))
+                                       referenced && page_mapping_inuse(page)
+                                       && !(vm_flags & VM_LOCKED))
                        goto activate_locked;
 
                /*