LU-3677 mdt: Set HSM dirty open-for-write file when evicted.

[fs/lustre-release.git] / lustre / include / lu_ref.h

diff --git a/lustre/include/lu_ref.h b/lustre/include/lu_ref.h
index 5bb3bf1..da589f1 100644 (file)
--- a/lustre/include/lu_ref.h
+++ b/lustre/include/lu_ref.h
@@ -2,6 +2,8 @@
  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
+ * Copyright (c) 2012, Intel Corporation.
+ *
  *   Author: Nikita Danilov <nikita.danilov@sun.com>
  *
  *   This file is part of Lustre, http://www.lustre.org.
@@ -107,9 +109,6 @@
 
 #ifdef USE_LU_REF
 
-/* An incomplete type (defined locally in lu_ref.c) */
-struct lu_ref_link;
-
 /**
  * Data-structure to keep track of references to a given object. This is used
  * for debugging.
@@ -118,10 +117,10 @@ struct lu_ref_link;
  * etc.) refer to.
  */
 struct lu_ref {
-        /**
-         * Spin-lock protecting lu_ref::lf_list.
-         */
-        cfs_spinlock_t       lf_guard;
+       /**
+        * Spin-lock protecting lu_ref::lf_list.
+        */
+       spinlock_t              lf_guard;
         /**
          * List of all outstanding references (each represented by struct
          * lu_ref_link), pointing to this object.
@@ -151,29 +150,48 @@ struct lu_ref {
         cfs_list_t           lf_linkage;
 };
 
+struct lu_ref_link {
+       struct lu_ref   *ll_ref;
+       cfs_list_t       ll_linkage;
+       const char      *ll_scope;
+       const void      *ll_source;
+};
+
 void lu_ref_init_loc(struct lu_ref *ref, const char *func, const int line);
 void lu_ref_fini    (struct lu_ref *ref);
 #define lu_ref_init(ref) lu_ref_init_loc(ref, __FUNCTION__, __LINE__)
 
-struct lu_ref_link *lu_ref_add       (struct lu_ref *ref, const char *scope,
-                                      const void *source);
-struct lu_ref_link *lu_ref_add_atomic(struct lu_ref *ref, const char *scope,
-                                      const void *source);
-void lu_ref_del                      (struct lu_ref *ref, const char *scope,
-                                      const void *source);
-void lu_ref_set_at                   (struct lu_ref *ref,
-                                      struct lu_ref_link *link,
-                                      const char *scope, const void *source0,
-                                      const void *source1);
-void lu_ref_del_at                   (struct lu_ref *ref,
-                                      struct lu_ref_link *link,
-                                      const char *scope, const void *source);
-void lu_ref_print                    (const struct lu_ref *ref);
-void lu_ref_print_all                (void);
+void lu_ref_add(struct lu_ref *ref, const char *scope, const void *source);
+
+void lu_ref_add_atomic(struct lu_ref *ref, const char *scope,
+                      const void *source);
+
+void lu_ref_add_at(struct lu_ref *ref, struct lu_ref_link *link,
+                  const char *scope, const void *source);
+
+void lu_ref_del(struct lu_ref *ref, const char *scope, const void *source);
+
+void lu_ref_set_at(struct lu_ref *ref, struct lu_ref_link *link,
+                  const char *scope, const void *source0, const void *source1);
+
+void lu_ref_del_at(struct lu_ref *ref, struct lu_ref_link *link,
+                  const char *scope, const void *source);
+
+void lu_ref_print(const struct lu_ref *ref);
+
+void lu_ref_print_all(void);
+
+int lu_ref_global_init(void);
+
+void lu_ref_global_fini(void);
 
 #else /* !USE_LU_REF */
 
-struct lu_ref  {};
+struct lu_ref {
+};
+
+struct lu_ref_link {
+};
 
 static inline void lu_ref_init(struct lu_ref *ref)
 {
@@ -183,18 +201,23 @@ static inline void lu_ref_fini(struct lu_ref *ref)
 {
 }
 
-static inline struct lu_ref_link *lu_ref_add(struct lu_ref *ref,
-                                             const char *scope,
-                                             const void *source)
+static inline void lu_ref_add(struct lu_ref *ref,
+                             const char *scope,
+                             const void *source)
+{
+}
+
+static inline void lu_ref_add_atomic(struct lu_ref *ref,
+                                    const char *scope,
+                                    const void *source)
 {
-        return NULL;
 }
 
-static inline struct lu_ref_link *lu_ref_add_atomic(struct lu_ref *ref,
-                                                    const char *scope,
-                                                    const void *source)
+static inline void lu_ref_add_at(struct lu_ref *ref,
+                                struct lu_ref_link *link,
+                                const char *scope,
+                                const void *source)
 {
-        return NULL;
 }
 
 static inline void lu_ref_del(struct lu_ref *ref, const char *scope,