diff options
Diffstat (limited to 'vm/vm_object.c')
| -rw-r--r-- | vm/vm_object.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/vm/vm_object.c b/vm/vm_object.c index f1017086..7eae3d7e 100644 --- a/vm/vm_object.c +++ b/vm/vm_object.c @@ -192,6 +192,15 @@ decl_simple_lock_data(,vm_object_cached_lock_data) simple_unlock(&vm_object_cached_lock_data) /* + * Number of physical pages referenced by cached objects. + * This counter is protected by its own lock to work around + * lock ordering issues. + */ +int vm_object_cached_pages; + +decl_simple_lock_data(,vm_object_cached_pages_lock_data) + +/* * Virtual memory objects are initialized from * a template (see vm_object_allocate). * @@ -410,6 +419,7 @@ void vm_object_deallocate( queue_enter(&vm_object_cached_list, object, vm_object_t, cached_list); overflow = (++vm_object_cached_count > vm_object_cached_max); + vm_object_cached_pages_update(object->resident_page_count); vm_object_cache_unlock(); vm_object_deactivate_pages(object); @@ -1860,6 +1870,7 @@ vm_object_t vm_object_lookup( queue_remove(&vm_object_cached_list, object, vm_object_t, cached_list); vm_object_cached_count--; + vm_object_cached_pages_update(-object->resident_page_count); } object->ref_count++; @@ -1891,6 +1902,7 @@ vm_object_t vm_object_lookup_name( queue_remove(&vm_object_cached_list, object, vm_object_t, cached_list); vm_object_cached_count--; + vm_object_cached_pages_update(-object->resident_page_count); } object->ref_count++; @@ -1927,6 +1939,7 @@ void vm_object_destroy( queue_remove(&vm_object_cached_list, object, vm_object_t, cached_list); vm_object_cached_count--; + vm_object_cached_pages_update(-object->resident_page_count); } object->ref_count++; @@ -2080,6 +2093,7 @@ restart: queue_remove(&vm_object_cached_list, object, vm_object_t, cached_list); vm_object_cached_count--; + vm_object_cached_pages_update(-object->resident_page_count); } object->ref_count++; vm_object_unlock(object); |