Changeset 01029fc in mainline for kernel/generic/src/mm/backend_anon.c

Timestamp:

2012-11-07T21:30:44Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

3b8a990

Parents:

c387838

Message:

Define two new as area backend callbacks.

• Add is_resizable(as_area_t *)
• Add is_shareable(as_area_t *)
• Remove special knowledge of the phys backend from as_area_resize()

File:

• kernel/generic/src/mm/backend_anon.c (modified) (3 diffs)

kernel/generic/src/mm/backend_anon.c

@@ -59 +59 @@
 static void anon_destroy(as_area_t *);
 
+static bool anon_is_resizable(as_area_t *);
+static bool anon_is_shareable(as_area_t *);
+
 static int anon_page_fault(as_area_t *, uintptr_t, pf_access_t);
 static void anon_frame_free(as_area_t *, uintptr_t, uintptr_t);
@@ -67 +70 @@
         .share = anon_share,
         .destroy = anon_destroy,
+
+        .is_resizable = anon_is_resizable,
+        .is_shareable = anon_is_shareable,
 
         .page_fault = anon_page_fault,
@@ -152 +158 @@
 }
 
+bool anon_is_resizable(as_area_t *area)
+{
+        return true;
+}
+
+bool anon_is_shareable(as_area_t *area)
+{
+        return !(area->flags & AS_AREA_LATE_RESERVE);
+}
 
 /** Service a page fault in the anonymous memory address space area.