xnu-3248.40.184.tar.gz

[apple/xnu.git] / osfmk / vm / memory_object.c

diff --git a/osfmk/vm/memory_object.c b/osfmk/vm/memory_object.c
index e8ace8c9b90fb0cc128c1657ee7947afe6a8700b..848b1eea804e295a1e90176de10ebcb46c23b544 100644 (file)
--- a/osfmk/vm/memory_object.c
+++ b/osfmk/vm/memory_object.c
@@ -537,10 +537,12 @@ vm_object_update_extent(
        struct vm_page_delayed_work     *dwp;
        int             dw_count;
        int             dw_limit;
+       int             dirty_count;
 
         dwp = &dw_array[0];
         dw_count = 0;
        dw_limit = DELAYED_WORK_LIMIT(DEFAULT_DELAYED_WORK_LIMIT);
+       dirty_count = 0;
 
        for (;
             offset < offset_end && object->resident_page_count;
@@ -595,6 +597,8 @@ vm_object_update_extent(
                                break;
 
                        case MEMORY_OBJECT_LOCK_RESULT_MUST_FREE:
+                               if (m->dirty == TRUE)
+                                       dirty_count++;
                                dwp->dw_mask |= DW_vm_page_free;
                                break;
 
@@ -646,6 +650,10 @@ vm_object_update_extent(
                        break;
                }
        }
+       
+       if (dirty_count) {
+               task_update_logical_writes(current_task(), (dirty_count * PAGE_SIZE), TASK_WRITE_INVALIDATED);
+       }
        /*
         *      We have completed the scan for applicable pages.
         *      Clean any pages that have been saved.