b=22458 fix concurrent mgs lock revocation.

[fs/lustre-release.git] / lustre / mgs / mgs_internal.h

diff --git a/lustre/mgs/mgs_internal.h b/lustre/mgs/mgs_internal.h
index 1c31c24..4c77ed3 100644 (file)
--- a/lustre/mgs/mgs_internal.h
+++ b/lustre/mgs/mgs_internal.h
@@ -1,5 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #ifndef _MGS_INTERNAL_H
@@ -17,9 +49,11 @@
 
 /* mgs_llog.c */
 int class_dentry_readdir(struct obd_device *obd, struct dentry *dir,
-                         struct vfsmount *inmnt, 
-                         struct list_head *dentry_list);
- 
+                         struct vfsmount *inmnt,
+                         cfs_list_t *dentry_list);
+
+#define MGSSELF_NAME    "_mgs"
+
 struct mgs_tgt_srpc_conf {
         struct mgs_tgt_srpc_conf  *mtsc_next;
         char                      *mtsc_tgt;
@@ -33,37 +67,55 @@ struct mgs_tgt_srpc_conf {
 
 struct fs_db {
         char              fsdb_name[9];
-        struct list_head  fsdb_list;           /* list of databases */
-        struct semaphore  fsdb_sem;
+        cfs_list_t        fsdb_list;           /* list of databases */
+        cfs_semaphore_t   fsdb_sem;
         void             *fsdb_ost_index_map;  /* bitmap of used indicies */
         void             *fsdb_mdt_index_map;  /* bitmap of used indicies */
         /* COMPAT_146 these items must be recorded out of the old client log */
-        char             *fsdb_clilov;         /* COMPAT_146 client lov name */
+        char             *fsdb_clilov;       /* COMPAT_146 client lov name */
         char             *fsdb_clilmv;
-        char             *fsdb_mdtlov;         /* COMPAT_146 mds lov name */
+        char             *fsdb_mdtlov;       /* COMPAT_146 mds lov name */
         char             *fsdb_mdtlmv;
-        char             *fsdb_mdc;            /* COMPAT_146 mdc name */
+        char             *fsdb_mdc;          /* COMPAT_146 mdc name */
         /* end COMPAT_146 */
         __u32             fsdb_flags;
         __u32             fsdb_gen;
 
+        __u8              fsdb_revoking_lock;  /* lock is being revoked */
+
         /* in-memory copy of the srpc rules, guarded by fsdb_sem */
         struct sptlrpc_rule_set   fsdb_srpc_gen;
         struct mgs_tgt_srpc_conf *fsdb_srpc_tgt;
-        unsigned int              fsdb_srpc_fl_udesc:1;
+        unsigned int              fsdb_fl_udesc:1,
+                                  fsdb_fl_mgsself:1,
+                                  fsdb_fl_oscname_18:1;
 };
 
 int mgs_init_fsdb_list(struct obd_device *obd);
 int mgs_cleanup_fsdb_list(struct obd_device *obd);
+int mgs_find_or_make_fsdb(struct obd_device *obd, char *name, 
+                          struct fs_db **dbh);
+int mgs_get_fsdb_srpc_from_llog(struct obd_device *obd, struct fs_db *fsdb);
 int mgs_check_index(struct obd_device *obd, struct mgs_target_info *mti);
 int mgs_check_failnid(struct obd_device *obd, struct mgs_target_info *mti);
-int mgs_write_log_target(struct obd_device *obd, struct mgs_target_info *mti);
-int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti);
+int mgs_write_log_target(struct obd_device *obd, struct mgs_target_info *mti,
+                         struct fs_db *fsdb);
+int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti,
+                      struct fs_db *fsdb);
 int mgs_erase_log(struct obd_device *obd, char *name);
 int mgs_erase_logs(struct obd_device *obd, char *fsname);
 int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname);
 
+int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
+                 char *poolname, char *fsname, char *ostname);
+
+/* mgs_handler.c */
+void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb);
+
 /* mgs_fs.c */
+int mgs_client_add(struct obd_device *obd, struct obd_export *exp,
+                   void *localdata);
+int mgs_client_free(struct obd_export *exp);
 int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt);
 int mgs_fs_cleanup(struct obd_device *obddev);
 
@@ -75,7 +127,7 @@ int lproc_mgs_add_live(struct obd_device *obd, struct fs_db *fsdb);
 int lproc_mgs_del_live(struct obd_device *obd, struct fs_db *fsdb);
 void lprocfs_mgs_init_vars(struct lprocfs_static_vars *lvars);
 #else
-static inline int lproc_mgs_setup(struct obd_device *dev) 
+static inline int lproc_mgs_setup(struct obd_device *dev)
 {return 0;}
 static inline int lproc_mgs_cleanup(struct obd_device *obd)
 {return 0;}