From: tappro <tappro>
Date: Mon, 3 Apr 2006 18:23:41 +0000 (+0000)
Subject: move generic md_ stuff from mdt.h to md_object.h. It is extention for
X-Git-Tag: v1_8_0_110~486^2~2110
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=508e8e8c7fa4b643ea8c589feb8901b4884d24d0;p=fs%2Flustre-release.git

move generic md_ stuff from mdt.h to md_object.h. It is extention for
lu_object.h
---

diff --git a/lustre/include/linux/md_object.h b/lustre/include/linux/md_object.h
new file mode 100644
index 0000000..146a01d
--- /dev/null
+++ b/lustre/include/linux/md_object.h
@@ -0,0 +1,77 @@
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ * 
+ *  Extention of lu_object.h for metadata objects
+ *  
+ *  Copyright (C) 2006 Cluster File Systems, Inc.
+ *
+ *   This file is part of Lustre, http://www.lustre.org.
+ *
+ *   Lustre is free software; you can redistribute it and/or
+ *   modify it under the terms of version 2 of the GNU General Public
+ *   License as published by the Free Software Foundation.
+ *
+ *   Lustre is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Lustre; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef _LINUX_MD_OBJECT_H
+#define _LINUX_MD_OBJECT_H
+
+#include <linux/lu_object.h>
+
+struct md_device;
+struct md_device_operations;
+struct md_object;
+
+struct md_device_operations {
+        /* get root FID */
+        int (*mdo_root_get)(struct md_device *m, struct ll_fid *f);
+        /* metadata API */
+        int (*mdo_mkdir)(struct md_object *o, const char *name,
+                         struct md_object *child);
+};
+
+struct md_device {
+        struct lu_device             md_lu_dev;
+        struct md_device_operations *md_ops;
+};
+
+struct md_object {
+        struct lu_object mo_lu;
+};
+
+static inline int lu_device_is_md(struct lu_device *d)
+{
+        return d->ld_type->ldt_tags & LU_DEVICE_MD;
+}
+
+static inline struct md_object *lu2md(struct lu_object *o)
+{
+        LASSERT(lu_device_is_md(o->lo_dev));
+        return container_of(o, struct md_object, mo_lu);
+}
+
+static inline struct md_device *md_device_get(struct md_object *o)
+{
+        LASSERT(lu_device_is_md(o->mo_lu.lo_dev));
+        return container_of(o->mo_lu.lo_dev, struct md_device, md_lu_dev);
+}
+
+static int md_device_init(struct md_device *md, struct lu_device_type *t)
+{
+	return lu_device_init(&md->md_lu_dev, t);
+}
+
+static void md_device_fini(struct md_device *md)
+{
+	lu_device_fini(&md->md_lu_dev);
+}
+#endif /* _LINUX_MD_OBJECT_H */