Litmus core: add generic locking API

Provide a unified userspace interface for plugin-specific locking
protocols.

1 files changed, 4 insertions, 3 deletions

diff --git a/include/litmus/fdso.h b/include/litmus/fdso.h
index bfab9fdc756c..25a292d68d96 100644
--- a/include/litmus/fdso.h
+++ b/include/litmus/fdso.h
@@ -33,12 +33,13 @@ struct inode_obj_id {
         unsigned int            id;
 };
 
+struct fdso_ops;
 
 struct od_table_entry {
         unsigned int            used;
 
         struct inode_obj_id*    obj;
-        void*                   extra;
+        const struct fdso_ops*  class;
 };
 
 struct fdso_ops {
@@ -51,14 +52,14 @@ struct fdso_ops {
 /* translate a userspace supplied od into the raw table entry
  * returns NULL if od is invalid
  */
-struct od_table_entry* __od_lookup(int od);
+struct od_table_entry* get_entry_for_od(int od);
 
 /* translate a userspace supplied od into the associated object
  * returns NULL if od is invalid
  */
 static inline void* od_lookup(int od, obj_type_t type)
 {
-        struct od_table_entry* e = __od_lookup(od);
+        struct od_table_entry* e = get_entry_for_od(od);
         return e && e->obj->type == type ? e->obj->obj : NULL;
 }