LU-2059 llog: MGC to use OSD API for backup logs

[fs/lustre-release.git] / lustre / obdclass / local_storage.h

diff --git a/lustre/obdclass/local_storage.h b/lustre/obdclass/local_storage.h
index 6f801a7..f7d6c9a 100644 (file)
--- a/lustre/obdclass/local_storage.h
+++ b/lustre/obdclass/local_storage.h
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2012 Whamcloud, Inc.
+ * Copyright (c) 2012, Intel Corporation.
  */
 /*
  * lustre/obdclass/local_storage.c
@@ -29,8 +29,8 @@
  *
  * Author: Mikhail Pershin <mike.pershin@intel.com>
  */
-
-#define DEBUG_SUBSYSTEM S_CLASS
+#ifndef __LOCAL_STORAGE_H
+#define __LOCAL_STORAGE_H
 
 #include <dt_object.h>
 #include <obd.h>
@@ -47,7 +47,7 @@ struct ls_device {
        struct dt_device        *ls_osd;
        /* list of all local OID storages */
        cfs_list_t               ls_los_list;
-       cfs_mutex_t              ls_los_mutex;
+       struct mutex             ls_los_mutex;
 };
 
 static inline struct ls_device *dt2ls_dev(struct dt_device *d)
@@ -72,4 +72,21 @@ static inline struct dt_object *ls_locate(const struct lu_env *env,
        return dt_locate_at(env, ls->ls_osd, fid, &ls->ls_top_dev.dd_lu_dev);
 }
 
+struct ls_device *ls_device_get(struct dt_device *dev);
+void ls_device_put(const struct lu_env *env, struct ls_device *ls);
+struct local_oid_storage *dt_los_find(struct ls_device *ls, __u64 seq);
+void dt_los_put(struct local_oid_storage *los);
+
+/* Lustre 2.3 on-disk structure describing local object OIDs storage
+ * the structure to be used with any sequence managed by
+ * local object library.
+ * Obsoleted since 2.4 but is kept for compatibility reasons,
+ * see lastid_compat_check() in obdclass/local_storage.c */
+struct los_ondisk {
+       __u32 lso_magic;
+       __u32 lso_next_oid;
+};
+
+#define LOS_MAGIC      0xdecafbee
 
+#endif