Whamcloud - gitweb
LU-580: update mgc llog process code
[fs/lustre-release.git] / lustre / include / obd_class.h
index d734870..54d0a65 100644 (file)
@@ -1,23 +1,40 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
+ * GPL HEADER START
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *   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.
+ * 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.
  *
- *   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.
+ * 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
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 #ifndef __CLASS_OBD_H
 #define __CLASS_OBD_H
 
 /* OBD Device Declarations */
 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
-extern spinlock_t obd_dev_lock;
+extern cfs_rwlock_t obd_dev_lock;
 
 /* OBD Operations Declarations */
 extern struct obd_device *class_conn2obd(struct lustre_handle *);
 extern struct obd_device *class_exp2obd(struct obd_export *);
+extern int class_handle_ioctl(unsigned int cmd, unsigned long arg);
 
 struct lu_device_type;
 
@@ -72,27 +90,28 @@ void class_obd_list(void);
 struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
                                           const char * typ_name,
                                           struct obd_uuid *grp_uuid);
-struct obd_device * class_find_client_notype(struct obd_uuid *tgt_uuid,
-                                             struct obd_uuid *grp_uuid);
 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
                                            int *next);
 struct obd_device * class_num2obd(int num);
 
-int oig_init(struct obd_io_group **oig);
-int oig_add_one(struct obd_io_group *oig, struct oig_callback_context *occ);
-void oig_complete_one(struct obd_io_group *oig,
-                      struct oig_callback_context *occ, int rc);
-void oig_release(struct obd_io_group *oig);
-int oig_wait(struct obd_io_group *oig);
+int class_notify_sptlrpc_conf(const char *fsname, int namelen);
 
 char *obd_export_nid2str(struct obd_export *exp);
 
 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
+int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 
 int obd_zombie_impexp_init(void);
 void obd_zombie_impexp_stop(void);
 void obd_zombie_impexp_cull(void);
+void obd_zombie_barrier(void);
+void obd_exports_barrier(struct obd_device *obd);
+int kuc_len(int payload_len);
+struct kuc_hdr * kuc_ptr(void *p);
+int kuc_ispayload(void *p);
+void *kuc_alloc(int payload_len, int transport, int type);
+void kuc_free(void *p, int payload_len);
 
 /* obd_config.c */
 int class_process_config(struct lustre_cfg *lcfg);
@@ -102,8 +121,11 @@ int class_attach(struct lustre_cfg *lcfg);
 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg);
 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg);
 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg);
-struct obd_device *class_incref(struct obd_device *obd);
-void class_decref(struct obd_device *obd);
+struct obd_device *class_incref(struct obd_device *obd,
+                                const char *scope, const void *source);
+void class_decref(struct obd_device *obd,
+                  const char *scope, const void *source);
+void dump_exports(struct obd_device *obd, int locks);
 
 /*obdecho*/
 #ifdef LPROCFS
@@ -123,7 +145,8 @@ static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 
 /* Passed as data param to class_config_parse_llog */
 struct config_llog_instance {
-        char *              cfg_instance;
+        char               *cfg_obdname;
+        void               *cfg_instance;
         struct super_block *cfg_sb;
         struct obd_uuid     cfg_uuid;
         int                 cfg_last_idx; /* for partial llog processing */
@@ -134,20 +157,30 @@ int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
                            struct config_llog_instance *cfg);
 
+enum {
+        CONFIG_T_CONFIG  = 0,
+        CONFIG_T_SPTLRPC = 1,
+        CONFIG_T_MAX     = 2
+};
+
 /* list of active configuration logs  */
 struct config_llog_data {
-        char               *cld_logname;
-        struct ldlm_res_id  cld_resid;
+        struct ldlm_res_id          cld_resid;
         struct config_llog_instance cld_cfg;
-        struct list_head    cld_list_chain;
-        atomic_t            cld_refcount;
-        struct obd_export  *cld_mgcexp;
-        unsigned int        cld_stopping:1, /* we were told to stop watching */
-                            cld_lostlock:1; /* lock not requeued */
+        cfs_list_t                  cld_list_chain;
+        cfs_atomic_t                cld_refcount;
+        struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
+        struct obd_export          *cld_mgcexp;
+        cfs_mutex_t                 cld_lock;
+        int                         cld_type;
+        unsigned int                cld_stopping:1, /* we were told to stop
+                                                     * watching */
+                                    cld_lostlock:1; /* lock not requeued */
+        char                        cld_logname[0];
 };
 
 struct lustre_profile {
-        struct list_head lp_list;
+        cfs_list_t       lp_list;
         char            *lp_profile;
         char            *lp_dt;
         char            *lp_md;
@@ -157,43 +190,75 @@ struct lustre_profile *class_get_profile(const char * prof);
 void class_del_profile(const char *prof);
 void class_del_profiles(void);
 
+#if LUSTRE_TRACKS_LOCK_EXP_REFS
+
+void __class_export_add_lock_ref(struct obd_export *, struct ldlm_lock *);
+void __class_export_del_lock_ref(struct obd_export *, struct ldlm_lock *);
+extern void (*class_export_dump_hook)(struct obd_export *);
+
+#else
+
+#define __class_export_add_lock_ref(exp, lock)             do {} while(0)
+#define __class_export_del_lock_ref(exp, lock)             do {} while(0)
+
+#endif
+
 #define class_export_rpc_get(exp)                                       \
 ({                                                                      \
-        atomic_inc(&(exp)->exp_rpc_count);                              \
+        cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
-               (exp), atomic_read(&(exp)->exp_rpc_count));              \
+               (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
         class_export_get(exp);                                          \
 })
 
 #define class_export_rpc_put(exp)                                       \
 ({                                                                      \
-        atomic_dec(&(exp)->exp_rpc_count);                              \
+        LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
+        cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
-               (exp), atomic_read(&(exp)->exp_rpc_count));              \
+               (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
         class_export_put(exp);                                          \
 })
 
-/* genops.c */
-#define class_export_get(exp)                                                  \
-({                                                                             \
-        struct obd_export *exp_ = exp;                                         \
-        atomic_inc(&exp_->exp_refcount);                                       \
-        CDEBUG(D_INFO, "GETting export %p : new refcount %d\n", exp_,          \
-               atomic_read(&exp_->exp_refcount));                              \
-        exp_;                                                                  \
+#define class_export_lock_get(exp, lock)                                \
+({                                                                      \
+        cfs_atomic_inc(&(exp)->exp_locks_count);                        \
+        __class_export_add_lock_ref(exp, lock);                         \
+        CDEBUG(D_INFO, "lock GETting export %p : new locks_count %d\n", \
+               (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
+        class_export_get(exp);                                          \
 })
 
-#define class_export_put(exp)                                                  \
-do {                                                                           \
-        LASSERT((exp) != NULL);                                                \
-        CDEBUG(D_INFO, "PUTting export %p : new refcount %d\n", (exp),         \
-               atomic_read(&(exp)->exp_refcount) - 1);                         \
-        LASSERT(atomic_read(&(exp)->exp_refcount) > 0);                        \
-        LASSERT(atomic_read(&(exp)->exp_refcount) < 0x5a5a5a);                 \
-        __class_export_put(exp);                                               \
-} while (0)
+#define class_export_lock_put(exp, lock)                                \
+({                                                                      \
+        LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
+        cfs_atomic_dec(&(exp)->exp_locks_count);                        \
+        __class_export_del_lock_ref(exp, lock);                         \
+        CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
+               (exp), cfs_atomic_read(&(exp)->exp_locks_count));        \
+        class_export_put(exp);                                          \
+})
 
-void __class_export_put(struct obd_export *);
+#define class_export_cb_get(exp)                                        \
+({                                                                      \
+        cfs_atomic_inc(&(exp)->exp_cb_count);                           \
+        CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
+               (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
+        class_export_get(exp);                                          \
+})
+
+#define class_export_cb_put(exp)                                        \
+({                                                                      \
+        LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
+        cfs_atomic_dec(&(exp)->exp_cb_count);                           \
+        CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
+               (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
+        class_export_put(exp);                                          \
+})
+
+/* genops.c */
+struct obd_export *class_export_get(struct obd_export *exp);
+void class_export_put(struct obd_export *exp);
 struct obd_export *class_new_export(struct obd_device *obddev,
                                     struct obd_uuid *cluuid);
 void class_unlink_export(struct obd_export *exp);
@@ -210,10 +275,30 @@ int class_connect(struct lustre_handle *conn, struct obd_device *obd,
                   struct obd_uuid *cluuid);
 int class_disconnect(struct obd_export *exp);
 void class_fail_export(struct obd_export *exp);
+int class_connected_export(struct obd_export *exp);
 void class_disconnect_exports(struct obd_device *obddev);
-int class_disconnect_stale_exports(struct obd_device *,
-                                    int (*test_export)(struct obd_export *));
 int class_manual_cleanup(struct obd_device *obd);
+void class_disconnect_stale_exports(struct obd_device *,
+                                    int (*test_export)(struct obd_export *));
+static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
+{
+        return ((obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
+                (obd->obd_force ? OBD_OPT_FORCE : 0) |
+                (obd->obd_abort_recovery ? OBD_OPT_ABORT_RECOV : 0) |
+                0);
+}
+
+static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
+{
+        LASSERT(exp->exp_obd);
+        return exp->exp_obd->u.obt.obt_lut;
+}
+
+static inline struct lr_server_data *class_server_data(struct obd_device *obd)
+{
+        LASSERT(obd->u.obt.obt_lut);
+        return &obd->u.obt.obt_lut->lut_lsd;
+}
 
 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
@@ -313,6 +398,20 @@ do {                                                            \
 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 #endif
 
+static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
+{
+        /* Always add in ldlm_stats */
+        tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
+                                                  ,LPROCFS_STATS_FLAG_NOPERCPU);
+        if (tmp->nid_ldlm_stats == NULL)
+                return -ENOMEM;
+
+        lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
+
+        return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
+                                      tmp->nid_ldlm_stats);
+}
+
 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 do {                                                            \
         if (!OBT(obd) || !MDP((obd), op)) {                     \
@@ -385,7 +484,8 @@ static inline int class_devno_max(void)
 }
 
 static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
-                               void *key, __u32 *vallen, void *val)
+                               void *key, __u32 *vallen, void *val,
+                               struct lov_stripe_md *lsm)
 {
         int rc;
         ENTRY;
@@ -393,7 +493,7 @@ static inline int obd_get_info(struct obd_export *exp, __u32 keylen,
         EXP_CHECK_DT_OP(exp, get_info);
         EXP_COUNTER_INCREMENT(exp, get_info);
 
-        rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val);
+        rc = OBP(exp->exp_obd, get_info)(exp, keylen, key, vallen, val, lsm);
         RETURN(rc);
 }
 
@@ -412,27 +512,45 @@ static inline int obd_set_info_async(struct obd_export *exp, obd_count keylen,
         RETURN(rc);
 }
 
-#ifdef __KERNEL__
+/*
+ * obd-lu integration.
+ *
+ * Functionality is being moved into new lu_device-based layering, but some
+ * pieces of configuration process are still based on obd devices.
+ *
+ * Specifically, lu_device_type_operations::ldto_device_alloc() methods fully
+ * subsume ->o_setup() methods of obd devices they replace. The same for
+ * lu_device_operations::ldo_process_config() and ->o_process_config(). As a
+ * result, obd_setup() and obd_process_config() branch and call one XOR
+ * another.
+ *
+ * Yet neither lu_device_type_operations::ldto_device_fini() nor
+ * lu_device_type_operations::ldto_device_free() fully implement the
+ * functionality of ->o_precleanup() and ->o_cleanup() they override. Hence,
+ * obd_precleanup() and obd_cleanup() call both lu_device and obd operations.
+ */
+
 #define DECLARE_LU_VARS(ldt, d)                 \
-        struct lu_device_type *ldt;             \
+        struct lu_device_type *ldt;       \
         struct lu_device *d
-#else
-#define DECLARE_LU_VARS(ldt, d)                                 \
-        extern void __placeholder_to_put_a_semicolon(void)
-#endif
+
 static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
 {
         int rc;
         DECLARE_LU_VARS(ldt, d);
         ENTRY;
 
-#ifdef __KERNEL__
         ldt = obd->obd_type->typ_lu;
         if (ldt != NULL) {
+                struct lu_context  session_ctx;
                 struct lu_env env;
+                lu_context_init(&session_ctx, LCT_SESSION);
+                session_ctx.lc_thread = NULL;
+                lu_context_enter(&session_ctx);
 
-                rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
+                rc = lu_env_init(&env, ldt->ldt_ctx_tags);
                 if (rc == 0) {
+                        env.le_ses = &session_ctx;
                         d = ldt->ldt_ops->ldto_device_alloc(&env, ldt, cfg);
                         lu_env_fini(&env);
                         if (!IS_ERR(d)) {
@@ -442,9 +560,10 @@ static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
                         } else
                                 rc = PTR_ERR(d);
                 }
-        } else
-#endif
-        {
+                lu_context_exit(&session_ctx);
+                lu_context_fini(&session_ctx);
+
+        } else {
                 OBD_CHECK_DT_OP(obd, setup, -EOPNOTSUPP);
                 OBD_COUNTER_INCREMENT(obd, setup);
                 rc = OBP(obd, setup)(obd, cfg);
@@ -460,30 +579,23 @@ static inline int obd_precleanup(struct obd_device *obd,
         ENTRY;
 
         OBD_CHECK_DEV(obd);
-#ifdef __KERNEL__
         ldt = obd->obd_type->typ_lu;
         d = obd->obd_lu_dev;
-        if (ldt != NULL) {
-                LASSERT(d != NULL);
+        if (ldt != NULL && d != NULL) {
                 if (cleanup_stage == OBD_CLEANUP_EXPORTS) {
                         struct lu_env env;
 
-                        rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
+                        rc = lu_env_init(&env, ldt->ldt_ctx_tags);
                         if (rc == 0) {
                                 ldt->ldt_ops->ldto_device_fini(&env, d);
                                 lu_env_fini(&env);
                         }
-                } else {
-                        rc = 0;
                 }
-        } else
-#endif
-        {
-                OBD_CHECK_DT_OP(obd, precleanup, 0);
-                rc = OBP(obd, precleanup)(obd, cleanup_stage);
         }
-
+        OBD_CHECK_DT_OP(obd, precleanup, 0);
         OBD_COUNTER_INCREMENT(obd, precleanup);
+
+        rc = OBP(obd, precleanup)(obd, cleanup_stage);
         RETURN(rc);
 }
 
@@ -495,29 +607,50 @@ static inline int obd_cleanup(struct obd_device *obd)
 
         OBD_CHECK_DEV(obd);
 
-#ifdef __KERNEL__
         ldt = obd->obd_type->typ_lu;
         d = obd->obd_lu_dev;
-        if (ldt != NULL) {
+        if (ldt != NULL && d != NULL) {
                 struct lu_env env;
-                LASSERT(d != NULL);
 
-                rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
+                rc = lu_env_init(&env, ldt->ldt_ctx_tags);
                 if (rc == 0) {
                         ldt->ldt_ops->ldto_device_free(&env, d);
                         lu_env_fini(&env);
                         obd->obd_lu_dev = NULL;
                 }
-        } else
-#endif
-        {
-                OBD_CHECK_DT_OP(obd, cleanup, 0);
-                rc = OBP(obd, cleanup)(obd);
         }
+        OBD_CHECK_DT_OP(obd, cleanup, 0);
         OBD_COUNTER_INCREMENT(obd, cleanup);
+
+        rc = OBP(obd, cleanup)(obd);
         RETURN(rc);
 }
 
+static inline void obd_cleanup_client_import(struct obd_device *obd)
+{
+        ENTRY;
+
+        /* If we set up but never connected, the
+           client import will not have been cleaned. */
+        cfs_down_write(&obd->u.cli.cl_sem);
+        if (obd->u.cli.cl_import) {
+                struct obd_import *imp;
+                imp = obd->u.cli.cl_import;
+                CDEBUG(D_CONFIG, "%s: client import never connected\n",
+                       obd->obd_name);
+                ptlrpc_invalidate_import(imp);
+                if (imp->imp_rq_pool) {
+                        ptlrpc_free_rq_pool(imp->imp_rq_pool);
+                        imp->imp_rq_pool = NULL;
+                }
+                class_destroy_import(imp);
+                obd->u.cli.cl_import = NULL;
+        }
+        cfs_up_write(&obd->u.cli.cl_sem);
+
+        EXIT;
+}
+
 static inline int
 obd_process_config(struct obd_device *obd, int datalen, void *data)
 {
@@ -527,24 +660,23 @@ obd_process_config(struct obd_device *obd, int datalen, void *data)
 
         OBD_CHECK_DEV(obd);
 
-#ifdef __KERNEL__
+        obd->obd_process_conf = 1;
         ldt = obd->obd_type->typ_lu;
         d = obd->obd_lu_dev;
         if (ldt != NULL && d != NULL) {
                 struct lu_env env;
 
-                rc = lu_env_init(&env, NULL, ldt->ldt_ctx_tags);
+                rc = lu_env_init(&env, ldt->ldt_ctx_tags);
                 if (rc == 0) {
                         rc = d->ld_ops->ldo_process_config(&env, d, data);
                         lu_env_fini(&env);
                 }
-        } else
-#endif
-        {
+        } else {
                 OBD_CHECK_DT_OP(obd, process_config, -EOPNOTSUPP);
                 rc = OBP(obd, process_config)(obd, datalen, data);
         }
         OBD_COUNTER_INCREMENT(obd, process_config);
+        obd->obd_process_conf = 0;
 
         RETURN(rc);
 }
@@ -627,34 +759,39 @@ static inline int obd_alloc_memmd(struct obd_export *exp,
 static inline int obd_free_memmd(struct obd_export *exp,
                                  struct lov_stripe_md **mem_tgt)
 {
+        int rc;
+
         LASSERT(mem_tgt);
         LASSERT(*mem_tgt);
-        return obd_unpackmd(exp, mem_tgt, NULL, 0);
+        rc = obd_unpackmd(exp, mem_tgt, NULL, 0);
+        *mem_tgt = NULL;
+        return rc;
 }
 
-static inline int obd_checkmd(struct obd_export *exp,
-                              struct obd_export *md_exp,
-                              struct lov_stripe_md *mem_tgt)
+static inline int obd_precreate(struct obd_export *exp)
 {
         int rc;
         ENTRY;
 
-        EXP_CHECK_DT_OP(exp, checkmd);
-        EXP_COUNTER_INCREMENT(exp, checkmd);
+        EXP_CHECK_DT_OP(exp, precreate);
+        OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
 
-        rc = OBP(exp->exp_obd, checkmd)(exp, md_exp, mem_tgt);
+        rc = OBP(exp->exp_obd, precreate)(exp);
         RETURN(rc);
 }
 
-static inline int obd_precreate(struct obd_export *exp)
+static inline int obd_create_async(struct obd_export *exp,
+                                   struct obd_info *oinfo,
+                                   struct lov_stripe_md **ea,
+                                   struct obd_trans_info *oti)
 {
         int rc;
         ENTRY;
 
-        EXP_CHECK_DT_OP(exp, precreate);
-        OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
+        EXP_CHECK_DT_OP(exp, create_async);
+        EXP_COUNTER_INCREMENT(exp, create_async);
 
-        rc = OBP(exp->exp_obd, precreate)(exp);
+        rc = OBP(exp->exp_obd, create_async)(exp, oinfo, ea, oti);
         RETURN(rc);
 }
 
@@ -675,7 +812,7 @@ static inline int obd_create(struct obd_export *exp, struct obdo *obdo,
 static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
                               struct lov_stripe_md *ea,
                               struct obd_trans_info *oti,
-                              struct obd_export *md_exp)
+                              struct obd_export *md_exp, void *capa)
 {
         int rc;
         ENTRY;
@@ -683,7 +820,7 @@ static inline int obd_destroy(struct obd_export *exp, struct obdo *obdo,
         EXP_CHECK_DT_OP(exp, destroy);
         EXP_COUNTER_INCREMENT(exp, destroy);
 
-        rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp);
+        rc = OBP(exp->exp_obd, destroy)(exp, obdo, ea, oti, md_exp, capa);
         RETURN(rc);
 }
 
@@ -795,27 +932,42 @@ static inline int obd_del_conn(struct obd_import *imp, struct obd_uuid *uuid)
         RETURN(rc);
 }
 
+static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
+{
+        struct obd_uuid *uuid;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(exp->exp_obd, get_uuid, NULL);
+        EXP_COUNTER_INCREMENT(exp, get_uuid);
+
+        uuid = OBP(exp->exp_obd, get_uuid)(exp);
+        RETURN(uuid);
+}
+
+/** Create a new /a exp on device /a obd for the uuid /a cluuid
+ * @param exp New export handle
+ * @param d Connect data, supported flags are set, flags also understood
+ *    by obd are returned.
+ */
 static inline int obd_connect(const struct lu_env *env,
-                              struct lustre_handle *conn,struct obd_device *obd,
+                              struct obd_export **exp,struct obd_device *obd,
                               struct obd_uuid *cluuid,
-                              struct obd_connect_data *d,
+                              struct obd_connect_data *data,
                               void *localdata)
 {
         int rc;
-#ifdef LIBCFS_DEBUG
-        __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
+        __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
                                                    * check */
-#endif
         ENTRY;
 
         OBD_CHECK_DEV_ACTIVE(obd);
         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
         OBD_COUNTER_INCREMENT(obd, connect);
 
-        rc = OBP(obd, connect)(env, conn, obd, cluuid, d, localdata);
+        rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
         /* check that only subset is granted */
-        LASSERT(ergo(d != NULL,
-                     (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
+        LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
+                                    data->ocd_connect_flags));
         RETURN(rc);
 }
 
@@ -823,13 +975,12 @@ static inline int obd_reconnect(const struct lu_env *env,
                                 struct obd_export *exp,
                                 struct obd_device *obd,
                                 struct obd_uuid *cluuid,
-                                struct obd_connect_data *d)
+                                struct obd_connect_data *d,
+                                void *localdata)
 {
         int rc;
-#ifdef LIBCFS_DEBUG
         __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
                                                    * check */
-#endif
 
         ENTRY;
 
@@ -837,7 +988,7 @@ static inline int obd_reconnect(const struct lu_env *env,
         OBD_CHECK_DT_OP(obd, reconnect, 0);
         OBD_COUNTER_INCREMENT(obd, reconnect);
 
-        rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d);
+        rc = OBP(obd, reconnect)(env, exp, obd, cluuid, d, localdata);
         /* check that only subset is granted */
         LASSERT(ergo(d != NULL,
                      (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
@@ -919,6 +1070,74 @@ static inline int obd_ping(struct obd_export *exp)
         RETURN(rc);
 }
 
+static inline int obd_pool_new(struct obd_device *obd, char *poolname)
+{
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(obd, pool_new, -EOPNOTSUPP);
+        OBD_COUNTER_INCREMENT(obd, pool_new);
+
+        rc = OBP(obd, pool_new)(obd, poolname);
+        RETURN(rc);
+}
+
+static inline int obd_pool_del(struct obd_device *obd, char *poolname)
+{
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(obd, pool_del, -EOPNOTSUPP);
+        OBD_COUNTER_INCREMENT(obd, pool_del);
+
+        rc = OBP(obd, pool_del)(obd, poolname);
+        RETURN(rc);
+}
+
+static inline int obd_pool_add(struct obd_device *obd, char *poolname, char *ostname)
+{
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(obd, pool_add, -EOPNOTSUPP);
+        OBD_COUNTER_INCREMENT(obd, pool_add);
+
+        rc = OBP(obd, pool_add)(obd, poolname, ostname);
+        RETURN(rc);
+}
+
+static inline int obd_pool_rem(struct obd_device *obd, char *poolname, char *ostname)
+{
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(obd, pool_rem, -EOPNOTSUPP);
+        OBD_COUNTER_INCREMENT(obd, pool_rem);
+
+        rc = OBP(obd, pool_rem)(obd, poolname, ostname);
+        RETURN(rc);
+}
+
+static inline void obd_getref(struct obd_device *obd)
+{
+        ENTRY;
+        if (OBT(obd) && OBP(obd, getref)) {
+                OBD_COUNTER_INCREMENT(obd, getref);
+                OBP(obd, getref)(obd);
+        }
+        EXIT;
+}
+
+static inline void obd_putref(struct obd_device *obd)
+{
+        ENTRY;
+        if (OBT(obd) && OBP(obd, putref)) {
+                OBD_COUNTER_INCREMENT(obd, putref);
+                OBP(obd, putref)(obd);
+        }
+        EXIT;
+}
+
 static inline int obd_init_export(struct obd_export *exp)
 {
         int rc = 0;
@@ -971,10 +1190,6 @@ obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
         return 0;
 }
 
-#ifndef time_before
-#define time_before(t1, t2) ((long)t2 - (long)t1 > 0)
-#endif
-
 /* @max_age is the oldest time in jiffies that we accept using a cached data.
  * If the cache is older than @max_age we will get a new value from the
  * target.  Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
@@ -1002,9 +1217,10 @@ static inline int obd_statfs_async(struct obd_device *obd,
                        obd->obd_name, &obd->obd_osfs,
                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
-                spin_lock(&obd->obd_osfs_lock);
+                cfs_spin_lock(&obd->obd_osfs_lock);
                 memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
-                spin_unlock(&obd->obd_osfs_lock);
+                cfs_spin_unlock(&obd->obd_osfs_lock);
+                oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
                 if (oinfo->oi_cb_up)
                         oinfo->oi_cb_up(oinfo, 0);
         }
@@ -1053,10 +1269,10 @@ static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
                 rc = OBP(obd, statfs)(obd, osfs, max_age, flags);
                 if (rc == 0) {
-                        spin_lock(&obd->obd_osfs_lock);
+                        cfs_spin_lock(&obd->obd_osfs_lock);
                         memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
                         obd->obd_osfs_age = cfs_time_current_64();
-                        spin_unlock(&obd->obd_osfs_lock);
+                        cfs_spin_unlock(&obd->obd_osfs_lock);
                 }
         } else {
                 CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
@@ -1064,16 +1280,37 @@ static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
                        obd->obd_name, &obd->obd_osfs,
                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
-                spin_lock(&obd->obd_osfs_lock);
+                cfs_spin_lock(&obd->obd_osfs_lock);
                 memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
-                spin_unlock(&obd->obd_osfs_lock);
+                cfs_spin_unlock(&obd->obd_osfs_lock);
         }
         RETURN(rc);
 }
 
-static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
-                           struct lov_stripe_md *ea, obd_size start,
-                           obd_size end, void *capa)
+static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
+                                 obd_size start, obd_size end)
+{
+        struct ptlrpc_request_set *set = NULL;
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
+        EXP_COUNTER_INCREMENT(exp, sync);
+
+        set =  ptlrpc_prep_set();
+        if (set == NULL)
+                RETURN(-ENOMEM);
+
+        rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
+        if (rc == 0)
+                rc = ptlrpc_set_wait(set);
+        ptlrpc_set_destroy(set);
+        RETURN(rc);
+}
+
+static inline int obd_sync(struct obd_export *exp, struct obd_info *oinfo,
+                           obd_size start, obd_size end,
+                           struct ptlrpc_request_set *set)
 {
         int rc;
         ENTRY;
@@ -1081,7 +1318,7 @@ static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
         EXP_COUNTER_INCREMENT(exp, sync);
 
-        rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
+        rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
         RETURN(rc);
 }
 
@@ -1141,192 +1378,9 @@ static inline int obd_brw(int cmd, struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_brw_async(int cmd, struct obd_export *exp,
-                                struct obd_info *oinfo, obd_count oa_bufs,
-                                struct brw_page *pg, struct obd_trans_info *oti,
-                                struct ptlrpc_request_set *set)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, brw_async);
-        EXP_COUNTER_INCREMENT(exp, brw_async);
-
-        if (!(cmd & OBD_BRW_RWMASK)) {
-                CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
-                LBUG();
-        }
-
-        rc = OBP(exp->exp_obd, brw_async)(cmd, exp, oinfo, oa_bufs, pg,oti,set);
-        RETURN(rc);
-}
-
-static inline int obd_brw_rqset(int cmd, struct obd_export *exp,
-                                struct obdo *oa, struct lov_stripe_md *lsm,
-                                obd_count oa_bufs, struct brw_page *pg,
-                                struct obd_trans_info *oti,
-                                struct obd_capa *ocapa)
-{
-        struct ptlrpc_request_set *set = NULL;
-        struct obd_info oinfo = { { { 0 } } };
-        int rc = 0;
-        ENTRY;
-
-        set =  ptlrpc_prep_set();
-        if (set == NULL)
-                RETURN(-ENOMEM);
-
-        oinfo.oi_oa = oa;
-        oinfo.oi_md = lsm;
-        oinfo.oi_capa = ocapa;
-        rc = obd_brw_async(cmd, exp, &oinfo, oa_bufs, pg, oti, set);
-        if (rc == 0) {
-                rc = ptlrpc_set_wait(set);
-                if (rc)
-                        CERROR("error from callback: rc = %d\n", rc);
-        } else {
-                CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
-                       "error from obd_brw_async: rc = %d\n", rc);
-        }
-        ptlrpc_set_destroy(set);
-        RETURN(rc);
-}
-
-static inline  int obd_prep_async_page(struct obd_export *exp,
-                                       struct lov_stripe_md *lsm,
-                                       struct lov_oinfo *loi,
-                                       cfs_page_t *page, obd_off offset,
-                                       struct obd_async_page_ops *ops,
-                                       void *data, void **res, int nocache,
-                                       struct lustre_handle *lockh)
-{
-        int ret;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, prep_async_page);
-        EXP_COUNTER_INCREMENT(exp, prep_async_page);
-
-        ret = OBP(exp->exp_obd, prep_async_page)(exp, lsm, loi, page, offset,
-                                                 ops, data, res, nocache,
-                                                 lockh);
-        RETURN(ret);
-}
-
-static inline int obd_reget_short_lock(struct obd_export *exp,
-                                       struct lov_stripe_md *lsm,
-                                       void **res, int rw,
-                                       obd_off start, obd_off end,
-                                       void **cookie)
-{
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, reget_short_lock);
-        EXP_COUNTER_INCREMENT(exp, reget_short_lock);
-
-        RETURN(OBP(exp->exp_obd, reget_short_lock)(exp, lsm, res, rw,
-                                                   start, end, cookie));
-}
-
-static inline int obd_release_short_lock(struct obd_export *exp,
-                                         struct lov_stripe_md *lsm, obd_off end,
-                                         void *cookie, int rw)
-{
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, release_short_lock);
-        EXP_COUNTER_INCREMENT(exp, release_short_lock);
-
-        RETURN(OBP(exp->exp_obd, release_short_lock)(exp, lsm, end,
-                                                     cookie, rw));
-}
-
-static inline int obd_queue_async_io(struct obd_export *exp,
-                                     struct lov_stripe_md *lsm,
-                                     struct lov_oinfo *loi, void *cookie,
-                                     int cmd, obd_off off, int count,
-                                     obd_flag brw_flags, obd_flag async_flags)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, queue_async_io);
-        EXP_COUNTER_INCREMENT(exp, queue_async_io);
-        LASSERT(cmd & OBD_BRW_RWMASK);
-
-        rc = OBP(exp->exp_obd, queue_async_io)(exp, lsm, loi, cookie, cmd, off,
-                                               count, brw_flags, async_flags);
-        RETURN(rc);
-}
-
-static inline int obd_set_async_flags(struct obd_export *exp,
-                                      struct lov_stripe_md *lsm,
-                                      struct lov_oinfo *loi, void *cookie,
-                                      obd_flag async_flags)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, set_async_flags);
-        EXP_COUNTER_INCREMENT(exp, set_async_flags);
-
-        rc = OBP(exp->exp_obd, set_async_flags)(exp, lsm, loi, cookie,
-                                                async_flags);
-        RETURN(rc);
-}
-
-static inline int obd_queue_group_io(struct obd_export *exp,
-                                     struct lov_stripe_md *lsm,
-                                     struct lov_oinfo *loi,
-                                     struct obd_io_group *oig,
-                                     void *cookie, int cmd, obd_off off,
-                                     int count, obd_flag brw_flags,
-                                     obd_flag async_flags)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, queue_group_io);
-        EXP_COUNTER_INCREMENT(exp, queue_group_io);
-        LASSERT(cmd & OBD_BRW_RWMASK);
-
-        rc = OBP(exp->exp_obd, queue_group_io)(exp, lsm, loi, oig, cookie,
-                                               cmd, off, count, brw_flags,
-                                               async_flags);
-        RETURN(rc);
-}
-
-static inline int obd_trigger_group_io(struct obd_export *exp,
-                                       struct lov_stripe_md *lsm,
-                                       struct lov_oinfo *loi,
-                                       struct obd_io_group *oig)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, trigger_group_io);
-        EXP_COUNTER_INCREMENT(exp, trigger_group_io);
-
-        rc = OBP(exp->exp_obd, trigger_group_io)(exp, lsm, loi, oig);
-        RETURN(rc);
-}
-
-static inline int obd_teardown_async_page(struct obd_export *exp,
-                                          struct lov_stripe_md *lsm,
-                                          struct lov_oinfo *loi, void *cookie)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, teardown_async_page);
-        EXP_COUNTER_INCREMENT(exp, teardown_async_page);
-
-        rc = OBP(exp->exp_obd, teardown_async_page)(exp, lsm, loi, cookie);
-        RETURN(rc);
-}
-
 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
                              int objcount, struct obd_ioobj *obj,
-                             int niocount, struct niobuf_remote *remote,
+                             struct niobuf_remote *remote, int *pages,
                              struct niobuf_local *local,
                              struct obd_trans_info *oti,
                              struct lustre_capa *capa)
@@ -1337,14 +1391,15 @@ static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *oa,
         EXP_CHECK_DT_OP(exp, preprw);
         EXP_COUNTER_INCREMENT(exp, preprw);
 
-        rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, niocount,
-                                       remote, local, oti, capa);
+        rc = OBP(exp->exp_obd, preprw)(cmd, exp, oa, objcount, obj, remote,
+                                       pages, local, oti, capa);
         RETURN(rc);
 }
 
 static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
                                int objcount, struct obd_ioobj *obj,
-                               int niocount, struct niobuf_local *local,
+                               struct niobuf_remote *rnb, int pages,
+                               struct niobuf_local *local,
                                struct obd_trans_info *oti, int rc)
 {
         ENTRY;
@@ -1352,8 +1407,8 @@ static inline int obd_commitrw(int cmd, struct obd_export *exp, struct obdo *oa,
         EXP_CHECK_DT_OP(exp, commitrw);
         EXP_COUNTER_INCREMENT(exp, commitrw);
 
-        rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj, niocount,
-                                         local, oti, rc);
+        rc = OBP(exp->exp_obd, commitrw)(cmd, exp, oa, objcount, obj,
+                                         rnb, pages, local, oti, rc);
         RETURN(rc);
 }
 
@@ -1435,32 +1490,31 @@ static inline int obd_enqueue(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_match(struct obd_export *exp, struct lov_stripe_md *ea,
-                            __u32 type, ldlm_policy_data_t *policy, __u32 mode,
-                            int *flags, void *data, struct lustre_handle *lockh)
+static inline int obd_change_cbdata(struct obd_export *exp,
+                                    struct lov_stripe_md *lsm,
+                                    ldlm_iterator_t it, void *data)
 {
         int rc;
         ENTRY;
 
-        EXP_CHECK_DT_OP(exp, match);
-        EXP_COUNTER_INCREMENT(exp, match);
+        EXP_CHECK_DT_OP(exp, change_cbdata);
+        EXP_COUNTER_INCREMENT(exp, change_cbdata);
 
-        rc = OBP(exp->exp_obd, match)(exp, ea, type, policy, mode, flags, data,
-                                      lockh);
+        rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
         RETURN(rc);
 }
 
-static inline int obd_change_cbdata(struct obd_export *exp,
-                                    struct lov_stripe_md *lsm,
-                                    ldlm_iterator_t it, void *data)
+static inline int obd_find_cbdata(struct obd_export *exp,
+                                  struct lov_stripe_md *lsm,
+                                  ldlm_iterator_t it, void *data)
 {
         int rc;
         ENTRY;
 
-        EXP_CHECK_DT_OP(exp, change_cbdata);
-        EXP_COUNTER_INCREMENT(exp, change_cbdata);
+        EXP_CHECK_DT_OP(exp, find_cbdata);
+        EXP_COUNTER_INCREMENT(exp, find_cbdata);
 
-        rc = OBP(exp->exp_obd, change_cbdata)(exp, lsm, it, data);
+        rc = OBP(exp->exp_obd, find_cbdata)(exp, lsm, it, data);
         RETURN(rc);
 }
 
@@ -1480,7 +1534,8 @@ static inline int obd_cancel(struct obd_export *exp,
 
 static inline int obd_cancel_unused(struct obd_export *exp,
                                     struct lov_stripe_md *ea,
-                                    int flags, void *opaque)
+                                    ldlm_cancel_flags_t flags,
+                                    void *opaque)
 {
         int rc;
         ENTRY;
@@ -1492,19 +1547,6 @@ static inline int obd_cancel_unused(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_join_lru(struct obd_export *exp,
-                               struct lov_stripe_md *ea, int join)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, join_lru);
-        EXP_COUNTER_INCREMENT(exp, join_lru);
-
-        rc = OBP(exp->exp_obd, join_lru)(exp, ea, join);
-        RETURN(rc);
-}
-
 static inline int obd_pin(struct obd_export *exp, const struct lu_fid *fid,
                           struct obd_capa *oc, struct obd_client_handle *handle,
                           int flag)
@@ -1611,7 +1653,8 @@ static inline int obd_notify_observer(struct obd_device *observer,
          */
         onu = &observer->obd_upcall;
         if (onu->onu_upcall != NULL)
-                rc2 = onu->onu_upcall(observer, observed, ev, onu->onu_owner);
+                rc2 = onu->onu_upcall(observer, observed, ev,
+                                      onu->onu_owner, NULL);
         else
                 rc2 = 0;
 
@@ -1627,7 +1670,7 @@ static inline int obd_quotacheck(struct obd_export *exp,
         EXP_CHECK_DT_OP(exp, quotacheck);
         EXP_COUNTER_INCREMENT(exp, quotacheck);
 
-        rc = OBP(exp->exp_obd, quotacheck)(exp, oqctl);
+        rc = OBP(exp->exp_obd, quotacheck)(exp->exp_obd, exp, oqctl);
         RETURN(rc);
 }
 
@@ -1640,7 +1683,40 @@ static inline int obd_quotactl(struct obd_export *exp,
         EXP_CHECK_DT_OP(exp, quotactl);
         EXP_COUNTER_INCREMENT(exp, quotactl);
 
-        rc = OBP(exp->exp_obd, quotactl)(exp, oqctl);
+        rc = OBP(exp->exp_obd, quotactl)(exp->exp_obd, exp, oqctl);
+        RETURN(rc);
+}
+
+static inline int obd_quota_adjust_qunit(struct obd_export *exp,
+                                         struct quota_adjust_qunit *oqaq,
+                                         struct lustre_quota_ctxt *qctxt,
+                                         struct ptlrpc_request_set *set)
+{
+#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
+        struct timeval work_start;
+        struct timeval work_end;
+        long timediff;
+#endif
+        int rc;
+        ENTRY;
+
+#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
+        if (qctxt)
+                cfs_gettimeofday(&work_start);
+#endif
+        EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
+        EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
+
+        rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
+
+#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
+        if (qctxt) {
+                cfs_gettimeofday(&work_end);
+                timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
+                lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
+                                    timediff);
+        }
+#endif
         RETURN(rc);
 }
 
@@ -1675,12 +1751,38 @@ static inline int obd_register_observer(struct obd_device *obd,
 {
         ENTRY;
         OBD_CHECK_DEV(obd);
-        if (obd->obd_observer && observer)
+        cfs_down_write(&obd->obd_observer_link_sem);
+        if (obd->obd_observer && observer) {
+                cfs_up_write(&obd->obd_observer_link_sem);
                 RETURN(-EALREADY);
+        }
         obd->obd_observer = observer;
+        cfs_up_write(&obd->obd_observer_link_sem);
+        RETURN(0);
+}
+
+static inline int obd_pin_observer(struct obd_device *obd,
+                                   struct obd_device **observer)
+{
+        ENTRY;
+        cfs_down_read(&obd->obd_observer_link_sem);
+        if (!obd->obd_observer) {
+                *observer = NULL;
+                cfs_up_read(&obd->obd_observer_link_sem);
+                RETURN(-ENOENT);
+        }
+        *observer = obd->obd_observer;
+        RETURN(0);
+}
+
+static inline int obd_unpin_observer(struct obd_device *obd)
+{
+        ENTRY;
+        cfs_up_read(&obd->obd_observer_link_sem);
         RETURN(0);
 }
 
+#if 0
 static inline int obd_register_page_removal_cb(struct obd_export *exp,
                                                obd_page_removal_cb_t cb,
                                                obd_pin_extent_cb pin_cb)
@@ -1733,6 +1835,7 @@ static inline int obd_unregister_lock_cancel_cb(struct obd_export *exp,
         rc = OBP(exp->exp_obd, unregister_lock_cancel_cb)(exp, cb);
         RETURN(rc);
 }
+#endif
 
 /* metadata helpers */
 static inline int md_getstatus(struct obd_export *exp,
@@ -1747,16 +1850,14 @@ static inline int md_getstatus(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int md_getattr(struct obd_export *exp, const struct lu_fid *fid,
-                             struct obd_capa *oc, obd_valid valid, int ea_size,
+static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
                              struct ptlrpc_request **request)
 {
         int rc;
         ENTRY;
         EXP_CHECK_MD_OP(exp, getattr);
         EXP_MD_COUNTER_INCREMENT(exp, getattr);
-        rc = MDP(exp->exp_obd, getattr)(exp, fid, oc, valid,
-                                        ea_size, request);
+        rc = MDP(exp->exp_obd, getattr)(exp, op_data, request);
         RETURN(rc);
 }
 
@@ -1772,6 +1873,18 @@ static inline int md_change_cbdata(struct obd_export *exp,
         RETURN(rc);
 }
 
+static inline int md_find_cbdata(struct obd_export *exp,
+                                 const struct lu_fid *fid,
+                                 ldlm_iterator_t it, void *data)
+{
+        int rc;
+        ENTRY;
+        EXP_CHECK_MD_OP(exp, find_cbdata);
+        EXP_MD_COUNTER_INCREMENT(exp, find_cbdata);
+        rc = MDP(exp->exp_obd, find_cbdata)(exp, fid, it, data);
+        RETURN(rc);
+}
+
 static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
                            struct md_open_data *mod,
                            struct ptlrpc_request **request)
@@ -1786,7 +1899,7 @@ static inline int md_close(struct obd_export *exp, struct md_op_data *op_data,
 
 static inline int md_create(struct obd_export *exp, struct md_op_data *op_data,
                             const void *data, int datalen, int mode, __u32 uid,
-                            __u32 gid, __u32 cap_effective, __u64 rdev,
+                            __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
                             struct ptlrpc_request **request)
 {
         int rc;
@@ -1816,6 +1929,7 @@ static inline int md_enqueue(struct obd_export *exp,
                              struct md_op_data *op_data,
                              struct lustre_handle *lockh,
                              void *lmm, int lmmsize,
+                             struct ptlrpc_request **req,
                              int extra_lock_flags)
 {
         int rc;
@@ -1823,22 +1937,19 @@ static inline int md_enqueue(struct obd_export *exp,
         EXP_CHECK_MD_OP(exp, enqueue);
         EXP_MD_COUNTER_INCREMENT(exp, enqueue);
         rc = MDP(exp->exp_obd, enqueue)(exp, einfo, it, op_data, lockh,
-                                        lmm, lmmsize, extra_lock_flags);
+                                        lmm, lmmsize, req, extra_lock_flags);
         RETURN(rc);
 }
 
 static inline int md_getattr_name(struct obd_export *exp,
-                                  const struct lu_fid *fid, struct obd_capa *oc,
-                                  const char *name, int namelen,
-                                  obd_valid valid, int ea_size, __u32 suppgid,
+                                  struct md_op_data *op_data,
                                   struct ptlrpc_request **request)
 {
         int rc;
         ENTRY;
         EXP_CHECK_MD_OP(exp, getattr_name);
         EXP_MD_COUNTER_INCREMENT(exp, getattr_name);
-        rc = MDP(exp->exp_obd, getattr_name)(exp, fid, oc, name, namelen,
-                                             valid, ea_size, suppgid, request);
+        rc = MDP(exp->exp_obd, getattr_name)(exp, op_data, request);
         RETURN(rc);
 }
 
@@ -1923,14 +2034,15 @@ static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
 
 static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
                               struct obd_capa *oc, __u64 offset,
-                              struct page *page,
+                              struct page **pages, unsigned npages,
                               struct ptlrpc_request **request)
 {
         int rc;
         ENTRY;
         EXP_CHECK_MD_OP(exp, readpage);
         EXP_MD_COUNTER_INCREMENT(exp, readpage);
-        rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
+        rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, pages, npages,
+                                         request);
         RETURN(rc);
 }
 
@@ -2016,18 +2128,20 @@ static inline int md_clear_open_replay_data(struct obd_export *exp,
 }
 
 static inline int md_set_lock_data(struct obd_export *exp,
-                                   __u64 *lockh, void *data)
+                                   __u64 *lockh, void *data, __u32 *bits)
 {
         ENTRY;
         EXP_CHECK_MD_OP(exp, set_lock_data);
         EXP_MD_COUNTER_INCREMENT(exp, set_lock_data);
-        RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data));
+        RETURN(MDP(exp->exp_obd, set_lock_data)(exp, lockh, data, bits));
 }
 
 static inline int md_cancel_unused(struct obd_export *exp,
                                    const struct lu_fid *fid,
                                    ldlm_policy_data_t *policy,
-                                   ldlm_mode_t mode, int flags, void *opaque)
+                                   ldlm_mode_t mode,
+                                   ldlm_cancel_flags_t flags,
+                                   void *opaque)
 {
         int rc;
         ENTRY;
@@ -2087,6 +2201,19 @@ static inline int md_renew_capa(struct obd_export *exp, struct obd_capa *ocapa,
         RETURN(rc);
 }
 
+static inline int md_unpack_capa(struct obd_export *exp,
+                                 struct ptlrpc_request *req,
+                                 const struct req_msg_field *field,
+                                 struct obd_capa **oc)
+{
+        int rc;
+        ENTRY;
+        EXP_CHECK_MD_OP(exp, unpack_capa);
+        EXP_MD_COUNTER_INCREMENT(exp, unpack_capa);
+        rc = MDP(exp->exp_obd, unpack_capa)(exp, req, field, oc);
+        RETURN(rc);
+}
+
 static inline int md_intent_getattr_async(struct obd_export *exp,
                                           struct md_enqueue_info *minfo,
                                           struct ldlm_enqueue_info *einfo)
@@ -2122,7 +2249,7 @@ extern cfs_mem_cache_t *obdo_cachep;
 
 #define OBDO_ALLOC(ptr)                                                       \
 do {                                                                          \
-        OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
+        OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
 } while(0)
 
 #define OBDO_FREE(ptr)                                                        \
@@ -2159,6 +2286,7 @@ void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
 int class_add_uuid(const char *uuid, __u64 nid);
 int class_del_uuid (const char *uuid);
+int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
 void class_init_uuidlist(void);
 void class_exit_uuidlist(void);
 
@@ -2167,6 +2295,6 @@ int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
 
 /* prng.c */
-void ll_generate_random_uuid(class_uuid_t uuid_out);
+#define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
 
 #endif /* __LINUX_OBD_CLASS_H */