Changeset dbb29de in mainline

Timestamp:

2014-02-03T19:16:01Z (10 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

054f3079, a107c74

Parents:

a17cced

Message:

Do not free the anonymous frames unless there is only one remaining area left.

File:

• kernel/generic/src/mm/backend_phys.c (modified) (1 diff)

kernel/generic/src/mm/backend_phys.c

@@ -93 +93 @@
 {
         mem_backend_data_t *data = &area->backend_data;
+        bool last = true;
 
-        if (data->anonymous)
+        if (area->sh_info) {
+                mutex_lock(&area->sh_info->lock);
+                if (area->sh_info->refcount != 1)
+                        last = false;
+                mutex_unlock(&area->sh_info->lock);
+        }
+        
+        if (last && data->anonymous)
                 frame_free(data->base, data->frames);
 }