LU-12511 lustre: introduce LUSTRE_MDT_MAXNAMELEN

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

diff --git a/lustre/include/lustre_fld.h b/lustre/include/lustre_fld.h
index e9f35a1..3d8288b 100644 (file)
--- a/lustre/include/lustre_fld.h
+++ b/lustre/include/lustre_fld.h
@@ -15,11 +15,7 @@
  *
  * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,8 +38,10 @@
  * @{
  */
 
-#include <lustre/lustre_idl.h>
+#include <uapi/linux/lustre/lustre_idl.h>
 #include <libcfs/libcfs.h>
+#include <seq_range.h>
+#include <lustre_fid.h>
 
 struct lu_env;
 struct lu_client_fld;
@@ -63,16 +61,17 @@ enum {
 };
 
 struct lu_fld_target {
-       cfs_list_t              ft_chain;
+       struct list_head        ft_chain;
        struct obd_export      *ft_exp;
        struct lu_server_fld   *ft_srv;
        __u64                   ft_idx;
 };
 
 struct lu_server_fld {
-        /**
-         * Fld dir proc entry. */
-        cfs_proc_dir_entry_t    *lsf_proc_dir;
+       /**
+        * Fld dir debugfs entry.
+        */
+       struct dentry           *lsf_debugfs_entry;
 
         /**
          * /fld file object device */
@@ -91,20 +90,34 @@ struct lu_server_fld {
          * Protect index modifications */
        struct mutex            lsf_lock;
 
-        /**
-         * Fld service name in form "fld-srv-lustre-MDTXXX" */
-        char                     lsf_name[80];
+       /**
+        * Fld service name in form "fld-srv-lustre-MDTXXX"
+        */
+       char                    lsf_name[LUSTRE_MDT_MAXNAMELEN];
+
+       int (*lsf_seq_lookup)(const struct lu_env *env,
+                             struct lu_server_fld *fld, u64 seq,
+                             struct lu_seq_range *range);
+
+       /**
+        * Just reformatted or upgraded, and this flag is being
+        * used to check whether the local FLDB is needs to be
+        * synced with global FLDB(in MDT0), and it is only needed
+        * if the MDT is upgraded from < 2.6 to 2.6, i.e. when the
+        * local FLDB is being invited */
+       unsigned int             lsf_new:1;
 
 };
 
 struct lu_client_fld {
-        /**
-         * Client side proc entry. */
-        cfs_proc_dir_entry_t    *lcf_proc_dir;
+       /**
+        * Client side debugfs entry.
+        */
+       struct dentry           *lcf_debugfs_entry;
 
-        /**
-         * List of exports client FLD knows about. */
-        cfs_list_t               lcf_targets;
+       /**
+        * List of exports client FLD knows about. */
+       struct list_head        lcf_targets;
 
         /**
          * Current hash to be used to chose an export. */
@@ -122,20 +135,15 @@ struct lu_client_fld {
          * Client FLD cache. */
         struct fld_cache        *lcf_cache;
 
-        /**
-         * Client fld proc entry name. */
-        char                     lcf_name[80];
-
-       int                      lcf_flags;
+       /**
+        * Client fld debugfs entry name.
+        */
+       char                    lcf_name[LUSTRE_MDT_MAXNAMELEN];
 };
 
-struct com_thread_info;
-int fld_query(struct com_thread_info *info);
-
 /* Server methods */
 int fld_server_init(const struct lu_env *env, struct lu_server_fld *fld,
-                   struct dt_device *dt, const char *prefix, int mds_node_id,
-                   int type);
+                   struct dt_device *dt, const char *prefix, int type);
 
 void fld_server_fini(const struct lu_env *env, struct lu_server_fld *fld);
 
@@ -154,7 +162,13 @@ int fld_insert_entry(const struct lu_env *env,
                     const struct lu_seq_range *range);
 
 int fld_server_lookup(const struct lu_env *env, struct lu_server_fld *fld,
-                     seqno_t seq, struct lu_seq_range *range);
+                     u64 seq, struct lu_seq_range *range);
+
+int fld_local_lookup(const struct lu_env *env, struct lu_server_fld *fld,
+                    u64 seq, struct lu_seq_range *range);
+
+int fld_update_from_controller(const struct lu_env *env,
+                              struct lu_server_fld *fld);
 
 /* Client methods */
 int fld_client_init(struct lu_client_fld *fld,
@@ -164,15 +178,14 @@ void fld_client_fini(struct lu_client_fld *fld);
 
 void fld_client_flush(struct lu_client_fld *fld);
 
-int fld_client_lookup(struct lu_client_fld *fld, seqno_t seq, mdsno_t *mds,
+int fld_client_lookup(struct lu_client_fld *fld, u64 seq, u32 *mds,
                       __u32 flags, const struct lu_env *env);
 
 int fld_client_create(struct lu_client_fld *fld,
                       struct lu_seq_range *range,
                       const struct lu_env *env);
 
-int fld_client_delete(struct lu_client_fld *fld,
-                      seqno_t seq,
+int fld_client_delete(struct lu_client_fld *fld, u64 seq,
                       const struct lu_env *env);
 
 int fld_client_add_target(struct lu_client_fld *fld,
@@ -181,7 +194,7 @@ int fld_client_add_target(struct lu_client_fld *fld,
 int fld_client_del_target(struct lu_client_fld *fld,
                           __u64 idx);
 
-void fld_client_proc_fini(struct lu_client_fld *fld);
+void fld_client_debugfs_fini(struct lu_client_fld *fld);
 
 /** @} fld */