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LU-2675 obd: decruft md_enqueue() and md_intent_lock()
[fs/lustre-release.git] / lustre / include / obd_class.h
index 029b21e..2692599 100644 (file)
@@ -86,9 +86,12 @@ struct lu_device_type;
 
 /* genops.c */
 struct obd_export *class_conn2export(struct lustre_handle *);
-int class_register_type(struct obd_ops *, struct md_ops *,
-                        struct lprocfs_vars *, const char *nm,
-                        struct lu_device_type *ldt);
+int class_register_type(struct obd_ops *, struct md_ops *, bool enable_proc,
+                       struct lprocfs_seq_vars *module_vars,
+#ifndef HAVE_ONLY_PROCFS_SEQ
+                       struct lprocfs_vars *,
+#endif
+                       const char *nm, struct lu_device_type *ldt);
 int class_unregister_type(const char *nm);
 
 struct obd_device *class_newdev(const char *type_name, const char *name);
@@ -125,6 +128,10 @@ 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);
+int obd_get_request_slot(struct client_obd *cli);
+void obd_put_request_slot(struct client_obd *cli);
+__u32 obd_get_max_rpcs_in_flight(struct client_obd *cli);
+int obd_set_max_rpcs_in_flight(struct client_obd *cli, __u32 max);
 
 struct llog_handle;
 struct llog_rec_hdr;
@@ -134,8 +141,12 @@ typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
                                     const char *new_name);
 int class_process_config(struct lustre_cfg *lcfg);
+#ifndef HAVE_ONLY_PROCFS_SEQ
 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
                              struct lustre_cfg *lcfg, void *data);
+#endif
+int class_process_proc_seq_param(char *prefix, struct lprocfs_seq_vars *lvars,
+                                struct lustre_cfg *lcfg, void *data);
 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);
@@ -151,16 +162,6 @@ int class_config_llog_handler(const struct lu_env *env,
 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
 int class_add_uuid(const char *uuid, __u64 nid);
 
-/*obdecho*/
-#ifdef LPROCFS
-extern void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars);
-#else
-static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
-{
-        memset(lvars, 0, sizeof(*lvars));
-}
-#endif
-
 #define CFG_F_START     0x01   /* Set when we start updating from a log */
 #define CFG_F_MARKER    0x02   /* We are within a maker */
 #define CFG_F_SKIP      0x04   /* We should ignore this cfg command */
@@ -169,13 +170,14 @@ 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_obdname;
-        void               *cfg_instance;
-        struct super_block *cfg_sb;
-        struct obd_uuid     cfg_uuid;
-       llog_cb_t           cfg_callback;
-        int                 cfg_last_idx; /* for partial llog processing */
-        int                 cfg_flags;
+       char                    *cfg_obdname;
+       void                    *cfg_instance;
+       struct super_block      *cfg_sb;
+       struct obd_uuid          cfg_uuid;
+       llog_cb_t                cfg_callback;
+       int                      cfg_last_idx; /* for partial llog processing */
+       int                      cfg_flags;
+       __u32                    cfg_lwp_idx;
 };
 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
                            char *name, struct config_llog_instance *cfg);
@@ -183,20 +185,25 @@ int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
                           char *name, struct config_llog_instance *cfg);
 
 enum {
-        CONFIG_T_CONFIG  = 0,
-        CONFIG_T_SPTLRPC = 1,
-        CONFIG_T_RECOVER = 2,
-        CONFIG_T_MAX     = 3
+       CONFIG_T_CONFIG  = 0,
+       CONFIG_T_SPTLRPC = 1,
+       CONFIG_T_RECOVER = 2,
+       CONFIG_T_PARAMS  = 3,
+       CONFIG_T_MAX     = 4
 };
 
+#define PARAMS_FILENAME        "params"
+#define LCTL_UPCALL    "lctl"
+
 /* list of active configuration logs  */
 struct config_llog_data {
         struct ldlm_res_id          cld_resid;
         struct config_llog_instance cld_cfg;
         cfs_list_t                  cld_list_chain;
-        cfs_atomic_t                cld_refcount;
-        struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
-        struct config_llog_data    *cld_recover;    /* imperative recover log */
+       atomic_t                    cld_refcount;
+       struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
+       struct config_llog_data    *cld_params; /* common parameters log */
+       struct config_llog_data    *cld_recover;/* imperative recover log */
         struct obd_export          *cld_mgcexp;
        struct mutex                cld_lock;
         int                         cld_type;
@@ -232,53 +239,53 @@ extern void (*class_export_dump_hook)(struct obd_export *);
 
 #define class_export_rpc_inc(exp)                                       \
 ({                                                                      \
-        cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
-        CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
-               (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
+       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));              \
 })
 
 #define class_export_rpc_dec(exp)                                       \
 ({                                                                      \
-        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), cfs_atomic_read(&(exp)->exp_rpc_count));          \
+       LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
+       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));              \
 })
 
 #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);                                          \
+       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), atomic_read(&(exp)->exp_locks_count));            \
+       class_export_get(exp);                                          \
 })
 
 #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);                                          \
+       LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
+       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), atomic_read(&(exp)->exp_locks_count));            \
+       class_export_put(exp);                                          \
 })
 
 #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);                                          \
+       atomic_inc(&(exp)->exp_cb_count);                               \
+       CDEBUG(D_INFO, "callback GETting export %p : new cb_count %d\n",\
+              (exp), 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);                                          \
+       LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
+       atomic_dec(&(exp)->exp_cb_count);                               \
+       CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
+              (exp), atomic_read(&(exp)->exp_cb_count));               \
+       class_export_put(exp);                                          \
 })
 
 /* genops.c */
@@ -336,9 +343,6 @@ void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
                   unsigned int valid);
 
-void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
-void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
-
 #define OBT(dev)        (dev)->obd_type
 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
@@ -367,64 +371,57 @@ do {                                                            \
 
 
 #ifdef LPROCFS
-#define OBD_COUNTER_OFFSET(op)                                  \
-        ((offsetof(struct obd_ops, o_ ## op) -                  \
-          offsetof(struct obd_ops, o_iocontrol))                \
-         / sizeof(((struct obd_ops *)(0))->o_iocontrol))
-
-#define OBD_COUNTER_INCREMENT(obdx, op)                           \
-        if ((obdx)->obd_stats != NULL) {                          \
-                unsigned int coffset;                             \
-                coffset = (unsigned int)((obdx)->obd_cntr_base) + \
-                        OBD_COUNTER_OFFSET(op);                   \
-                LASSERT(coffset < (obdx)->obd_stats->ls_num);     \
-                lprocfs_counter_incr((obdx)->obd_stats, coffset); \
-        }
-
-#define EXP_COUNTER_INCREMENT(export, op)                                    \
-        if ((export)->exp_obd->obd_stats != NULL) {                          \
-                unsigned int coffset;                                        \
-                coffset = (unsigned int)((export)->exp_obd->obd_cntr_base) + \
-                        OBD_COUNTER_OFFSET(op);                              \
-                LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num);     \
-                lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
-                if ((export)->exp_nid_stats != NULL &&                       \
-                    (export)->exp_nid_stats->nid_stats != NULL)              \
-                        lprocfs_counter_incr(                                \
-                                (export)->exp_nid_stats->nid_stats, coffset);\
-        }
-
-#define MD_COUNTER_OFFSET(op)                                   \
-        ((offsetof(struct md_ops, m_ ## op) -                   \
-          offsetof(struct md_ops, m_getstatus))                 \
-         / sizeof(((struct md_ops *)(0))->m_getstatus))
-
-#define MD_COUNTER_INCREMENT(obdx, op)                           \
-        if ((obd)->md_stats != NULL) {                           \
-                unsigned int coffset;                            \
-                coffset = (unsigned int)((obdx)->md_cntr_base) + \
-                        MD_COUNTER_OFFSET(op);                   \
-                LASSERT(coffset < (obdx)->md_stats->ls_num);     \
-                lprocfs_counter_incr((obdx)->md_stats, coffset); \
-        }
-
-#define EXP_MD_COUNTER_INCREMENT(export, op)                                 \
-        if ((export)->exp_obd->obd_stats != NULL) {                          \
-                unsigned int coffset;                                        \
-                coffset = (unsigned int)((export)->exp_obd->md_cntr_base) +  \
-                        MD_COUNTER_OFFSET(op);                               \
-                LASSERT(coffset < (export)->exp_obd->md_stats->ls_num);      \
-                lprocfs_counter_incr((export)->exp_obd->md_stats, coffset);  \
-                if ((export)->exp_md_stats != NULL)                          \
-                        lprocfs_counter_incr(                                \
-                                (export)->exp_md_stats, coffset);            \
-        }
+#define OBD_COUNTER_OFFSET(op)                                                \
+       ((offsetof(struct obd_ops, o_ ## op) -                                 \
+         offsetof(struct obd_ops, o_iocontrol))                               \
+        / sizeof(((struct obd_ops *)NULL)->o_iocontrol))
+
+/* The '- 1' below is for o_owner. */
+#define NUM_OBD_STATS                                                         \
+       (sizeof(struct obd_ops) /                                              \
+        sizeof(((struct obd_ops *)NULL)->o_iocontrol) - 1)
+
+#define OBD_COUNTER_INCREMENT(obd, op)                                        \
+       lprocfs_counter_incr((obd)->obd_stats,                                 \
+                            (obd)->obd_cntr_base + OBD_COUNTER_OFFSET(op))
+
+#define EXP_COUNTER_INCREMENT(exp, op)                                        \
+       do {                                                                   \
+               unsigned int _off;                                             \
+               _off = (exp)->exp_obd->obd_cntr_base + OBD_COUNTER_OFFSET(op); \
+               lprocfs_counter_incr((exp)->exp_obd->obd_stats, _off);         \
+               if ((exp)->exp_obd->obd_uses_nid_stats &&                      \
+                   (exp)->exp_nid_stats != NULL)                              \
+                       lprocfs_counter_incr((exp)->exp_nid_stats->nid_stats,  \
+                                            _off);                            \
+       } while (0)
+
+#define _MD_COUNTER_OFFSET(m_op)                                              \
+       ((offsetof(struct md_ops, m_op) -                                      \
+         offsetof(struct md_ops, MD_STATS_FIRST_OP)) /                        \
+        sizeof(((struct md_ops *)NULL)->MD_STATS_FIRST_OP))
+
+#define MD_COUNTER_OFFSET(op) _MD_COUNTER_OFFSET(m_ ## op)
+
+#define NUM_MD_STATS                                                          \
+       (_MD_COUNTER_OFFSET(MD_STATS_LAST_OP) -                                \
+        _MD_COUNTER_OFFSET(MD_STATS_FIRST_OP) + 1)
+
+/* Note that we only increment md counters for ops whose offset is less
+ * than NUM_MD_STATS. This is explained in a comment in the definition
+ * of struct md_ops. */
+#define EXP_MD_COUNTER_INCREMENT(exp, op)                                     \
+       do {                                                                   \
+               if (MD_COUNTER_OFFSET(op) < NUM_MD_STATS)                      \
+                       lprocfs_counter_incr((exp)->exp_obd->obd_md_stats,     \
+                                       (exp)->exp_obd->obd_md_cntr_base +     \
+                                       MD_COUNTER_OFFSET(op));                \
+       } while (0)
 
 #else
 #define OBD_COUNTER_OFFSET(op)
 #define OBD_COUNTER_INCREMENT(obd, op)
 #define EXP_COUNTER_INCREMENT(exp, op)
-#define MD_COUNTER_INCREMENT(obd, op)
 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 #endif
 
@@ -442,16 +439,6 @@ static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
                                       tmp->nid_ldlm_stats);
 }
 
-#define OBD_CHECK_MD_OP(obd, op, err)                           \
-do {                                                            \
-        if (!OBT(obd) || !MDP((obd), op)) {                     \
-                if (err)                                        \
-                        CERROR("md_" #op ": dev %s/%d no operation\n", \
-                               obd->obd_name, obd->obd_minor);  \
-                RETURN(err);                                    \
-        }                                                       \
-} while (0)
-
 #define EXP_CHECK_MD_OP(exp, op)                                \
 do {                                                            \
         if ((exp) == NULL) {                                    \
@@ -577,7 +564,7 @@ static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
         if (ldt != NULL) {
                 struct lu_context  session_ctx;
                 struct lu_env env;
-                lu_context_init(&session_ctx, LCT_SESSION);
+                lu_context_init(&session_ctx, LCT_SESSION | LCT_SERVER_SESSION);
                 session_ctx.lc_thread = NULL;
                 lu_context_enter(&session_ctx);
 
@@ -741,15 +728,6 @@ static inline int obd_size_diskmd(struct obd_export *exp,
         return obd_packmd(exp, NULL, mem_src);
 }
 
-/* helper functions */
-static inline int obd_alloc_diskmd(struct obd_export *exp,
-                                   struct lov_mds_md **disk_tgt)
-{
-        LASSERT(disk_tgt);
-        LASSERT(*disk_tgt == NULL);
-        return obd_packmd(exp, disk_tgt, NULL);
-}
-
 static inline int obd_free_diskmd(struct obd_export *exp,
                                  struct lov_mds_md **disk_tgt)
 {
@@ -811,18 +789,6 @@ static inline int obd_free_memmd(struct obd_export *exp,
         return rc;
 }
 
-static inline int obd_precreate(struct obd_export *exp)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, precreate);
-        OBD_COUNTER_INCREMENT(exp->exp_obd, precreate);
-
-        rc = OBP(exp->exp_obd, precreate)(exp);
-        RETURN(rc);
-}
-
 static inline int obd_create_async(struct obd_export *exp,
                                    struct obd_info *oinfo,
                                    struct lov_stripe_md **ea,
@@ -1077,18 +1043,19 @@ static inline int obd_fid_fini(struct obd_device *obd)
        RETURN(rc);
 }
 
-static inline int obd_fid_alloc(struct obd_export *exp,
+static inline int obd_fid_alloc(const struct lu_env *env,
+                               struct obd_export *exp,
                                 struct lu_fid *fid,
                                 struct md_op_data *op_data)
 {
-        int rc;
-        ENTRY;
+       int rc;
+       ENTRY;
 
-        EXP_CHECK_DT_OP(exp, fid_alloc);
-        EXP_COUNTER_INCREMENT(exp, fid_alloc);
+       EXP_CHECK_DT_OP(exp, fid_alloc);
+       EXP_COUNTER_INCREMENT(exp, fid_alloc);
 
-        rc = OBP(exp->exp_obd, fid_alloc)(exp, fid, op_data);
-        RETURN(rc);
+       rc = OBP(exp->exp_obd, fid_alloc)(env, exp, fid, op_data);
+       RETURN(rc);
 }
 
 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
@@ -1191,27 +1158,6 @@ static inline int obd_destroy_export(struct obd_export *exp)
         RETURN(0);
 }
 
-static inline int obd_extent_calc(struct obd_export *exp,
-                                  struct lov_stripe_md *md,
-                                  int cmd, obd_off *offset)
-{
-        int rc;
-        ENTRY;
-        EXP_CHECK_DT_OP(exp, extent_calc);
-        rc = OBP(exp->exp_obd, extent_calc)(exp, md, cmd, offset);
-        RETURN(rc);
-}
-
-static inline struct dentry *
-obd_lvfs_fid2dentry(struct obd_export *exp, struct ost_id *oi, __u32 gen)
-{
-       struct lvfs_run_ctxt *ctxt = &exp->exp_obd->obd_lvfs_ctxt;
-       LASSERT(exp->exp_obd);
-
-       return ctxt->cb_ops.l_fid2dentry(ostid_id(oi), gen, ostid_seq(oi),
-                                        exp->exp_obd);
-}
-
 /* @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. */
@@ -1313,97 +1259,6 @@ static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
        RETURN(rc);
 }
 
-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)(NULL, exp, oinfo, start, end, set);
-        if (rc == 0)
-                rc = ptlrpc_set_wait(set);
-        ptlrpc_set_destroy(set);
-        RETURN(rc);
-}
-
-static inline int obd_sync(const struct lu_env *env, struct obd_export *exp,
-                           struct obd_info *oinfo, obd_size start, obd_size end,
-                           struct ptlrpc_request_set *set)
-{
-        int rc;
-        ENTRY;
-
-        OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
-        EXP_COUNTER_INCREMENT(exp, sync);
-
-        rc = OBP(exp->exp_obd, sync)(env, exp, oinfo, start, end, set);
-        RETURN(rc);
-}
-
-static inline int obd_punch_rqset(struct obd_export *exp,
-                                  struct obd_info *oinfo,
-                                  struct obd_trans_info *oti)
-{
-        struct ptlrpc_request_set *set = NULL;
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, punch);
-        EXP_COUNTER_INCREMENT(exp, punch);
-
-        set =  ptlrpc_prep_set();
-        if (set == NULL)
-                RETURN(-ENOMEM);
-
-        rc = OBP(exp->exp_obd, punch)(NULL, exp, oinfo, oti, set);
-        if (rc == 0)
-                rc = ptlrpc_set_wait(set);
-        ptlrpc_set_destroy(set);
-        RETURN(rc);
-}
-
-static inline int obd_punch(const struct lu_env *env, struct obd_export *exp,
-                            struct obd_info *oinfo, struct obd_trans_info *oti,
-                            struct ptlrpc_request_set *rqset)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, punch);
-        EXP_COUNTER_INCREMENT(exp, punch);
-
-        rc = OBP(exp->exp_obd, punch)(env, exp, oinfo, oti, rqset);
-        RETURN(rc);
-}
-
-static inline int obd_brw(int cmd, struct obd_export *exp,
-                          struct obd_info *oinfo, obd_count oa_bufs,
-                          struct brw_page *pg, struct obd_trans_info *oti)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, brw);
-        EXP_COUNTER_INCREMENT(exp, brw);
-
-        if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
-                CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
-                       "or OBD_BRW_CHECK\n");
-                LBUG();
-        }
-
-        rc = OBP(exp->exp_obd, brw)(cmd, exp, oinfo, oa_bufs, pg, oti);
-        RETURN(rc);
-}
-
 static inline int obd_preprw(const struct lu_env *env, int cmd,
                              struct obd_export *exp, struct obdo *oa,
                              int objcount, struct obd_ioobj *obj,
@@ -1440,34 +1295,6 @@ static inline int obd_commitrw(const struct lu_env *env, int cmd,
         RETURN(rc);
 }
 
-static inline int obd_merge_lvb(struct obd_export *exp,
-                                struct lov_stripe_md *lsm,
-                                struct ost_lvb *lvb, int kms_only)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, merge_lvb);
-        EXP_COUNTER_INCREMENT(exp, merge_lvb);
-
-        rc = OBP(exp->exp_obd, merge_lvb)(exp, lsm, lvb, kms_only);
-        RETURN(rc);
-}
-
-static inline int obd_adjust_kms(struct obd_export *exp,
-                                 struct lov_stripe_md *lsm, obd_off size,
-                                 int shrink)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, adjust_kms);
-        EXP_COUNTER_INCREMENT(exp, adjust_kms);
-
-        rc = OBP(exp->exp_obd, adjust_kms)(exp, lsm, size, shrink);
-        RETURN(rc);
-}
-
 static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
                                 int len, void *karg, void *uarg)
 {
@@ -1481,43 +1308,6 @@ static inline int obd_iocontrol(unsigned int cmd, struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_enqueue_rqset(struct obd_export *exp,
-                                    struct obd_info *oinfo,
-                                    struct ldlm_enqueue_info *einfo)
-{
-        struct ptlrpc_request_set *set = NULL;
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, enqueue);
-        EXP_COUNTER_INCREMENT(exp, enqueue);
-
-        set =  ptlrpc_prep_set();
-        if (set == NULL)
-                RETURN(-ENOMEM);
-
-        rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
-        if (rc == 0)
-                rc = ptlrpc_set_wait(set);
-        ptlrpc_set_destroy(set);
-        RETURN(rc);
-}
-
-static inline int obd_enqueue(struct obd_export *exp,
-                              struct obd_info *oinfo,
-                              struct ldlm_enqueue_info *einfo,
-                              struct ptlrpc_request_set *set)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, enqueue);
-        EXP_COUNTER_INCREMENT(exp, enqueue);
-
-        rc = OBP(exp->exp_obd, enqueue)(exp, oinfo, einfo, set);
-        RETURN(rc);
-}
-
 static inline int obd_change_cbdata(struct obd_export *exp,
                                     struct lov_stripe_md *lsm,
                                     ldlm_iterator_t it, void *data)
@@ -1546,35 +1336,6 @@ static inline int obd_find_cbdata(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_cancel(struct obd_export *exp,
-                             struct lov_stripe_md *ea, __u32 mode,
-                             struct lustre_handle *lockh)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, cancel);
-        EXP_COUNTER_INCREMENT(exp, cancel);
-
-        rc = OBP(exp->exp_obd, cancel)(exp, ea, mode, lockh);
-        RETURN(rc);
-}
-
-static inline int obd_cancel_unused(struct obd_export *exp,
-                                    struct lov_stripe_md *ea,
-                                    ldlm_cancel_flags_t flags,
-                                    void *opaque)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, cancel_unused);
-        EXP_COUNTER_INCREMENT(exp, cancel_unused);
-
-        rc = OBP(exp->exp_obd, cancel_unused)(exp, ea, flags, opaque);
-        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)
@@ -1919,20 +1680,19 @@ static inline int md_done_writing(struct obd_export *exp,
 }
 
 static inline int md_enqueue(struct obd_export *exp,
-                             struct ldlm_enqueue_info *einfo,
-                             struct lookup_intent *it,
-                             struct md_op_data *op_data,
-                             struct lustre_handle *lockh,
-                             void *lmm, int lmmsize,
-                             struct ptlrpc_request **req,
-                             int extra_lock_flags)
+                            struct ldlm_enqueue_info *einfo,
+                            const union ldlm_policy_data *policy,
+                            struct lookup_intent *it,
+                            struct md_op_data *op_data,
+                            struct lustre_handle *lockh,
+                            __u64 extra_lock_flags)
 {
-        int rc;
-        ENTRY;
-        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, req, extra_lock_flags);
+       int rc;
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, enqueue);
+       EXP_MD_COUNTER_INCREMENT(exp, enqueue);
+       rc = MDP(exp->exp_obd, enqueue)(exp, einfo, policy, it, op_data, lockh,
+                                       extra_lock_flags);
         RETURN(rc);
 }
 
@@ -1949,20 +1709,19 @@ static inline int md_getattr_name(struct obd_export *exp,
 }
 
 static inline int md_intent_lock(struct obd_export *exp,
-                                struct md_op_data *op_data, void *lmm,
-                                int lmmsize, struct lookup_intent *it,
-                                int lookup_flags, struct ptlrpc_request **reqp,
+                                struct md_op_data *op_data,
+                                struct lookup_intent *it,
+                                struct ptlrpc_request **reqp,
                                 ldlm_blocking_callback cb_blocking,
                                 __u64 extra_lock_flags)
 {
-        int rc;
-        ENTRY;
-        EXP_CHECK_MD_OP(exp, intent_lock);
-        EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
-        rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
-                                            it, lookup_flags, reqp, cb_blocking,
-                                            extra_lock_flags);
-        RETURN(rc);
+       int rc;
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, intent_lock);
+       EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
+       rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, it, reqp, cb_blocking,
+                                           extra_lock_flags);
+       RETURN(rc);
 }
 
 static inline int md_link(struct obd_export *exp, struct md_op_data *op_data,
@@ -2016,15 +1775,15 @@ static inline int md_setattr(struct obd_export *exp, struct md_op_data *op_data,
         RETURN(rc);
 }
 
-static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
-                          struct obd_capa *oc, struct ptlrpc_request **request)
+static inline int md_fsync(struct obd_export *exp, const struct lu_fid *fid,
+                          struct obd_capa *oc, struct ptlrpc_request **request)
 {
-        int rc;
-        ENTRY;
-        EXP_CHECK_MD_OP(exp, sync);
-        EXP_MD_COUNTER_INCREMENT(exp, sync);
-        rc = MDP(exp->exp_obd, sync)(exp, fid, oc, request);
-        RETURN(rc);
+       int rc;
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, fsync);
+       EXP_MD_COUNTER_INCREMENT(exp, fsync);
+       rc = MDP(exp->exp_obd, fsync)(exp, fid, oc, request);
+       RETURN(rc);
 }
 
 static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
@@ -2039,6 +1798,20 @@ static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
         RETURN(rc);
 }
 
+static inline int md_read_entry(struct obd_export *exp,
+                               struct md_op_data *op_data,
+                               struct md_callback *cb_op,
+                               struct lu_dirent **ld,
+                               struct page **ppage)
+{
+       int rc;
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, read_entry);
+       EXP_MD_COUNTER_INCREMENT(exp, read_entry);
+       rc = MDP(exp->exp_obd, read_entry)(exp, op_data, cb_op, ld, ppage);
+       RETURN(rc);
+}
+
 static inline int md_unlink(struct obd_export *exp, struct md_op_data *op_data,
                             struct ptlrpc_request **request)
 {
@@ -2071,6 +1844,27 @@ static inline int md_free_lustre_md(struct obd_export *exp,
         RETURN(MDP(exp->exp_obd, free_lustre_md)(exp, md));
 }
 
+static inline int md_update_lsm_md(struct obd_export *exp,
+                                  struct lmv_stripe_md *lsm,
+                                  struct mdt_body *body,
+                                  ldlm_blocking_callback cb)
+{
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, update_lsm_md);
+       EXP_MD_COUNTER_INCREMENT(exp, update_lsm_md);
+       RETURN(MDP(exp->exp_obd, update_lsm_md)(exp, lsm, body, cb));
+}
+
+static inline int md_merge_attr(struct obd_export *exp,
+                               const struct lmv_stripe_md *lsm,
+                               struct cl_attr *attr)
+{
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, merge_attr);
+       EXP_MD_COUNTER_INCREMENT(exp, merge_attr);
+       RETURN(MDP(exp->exp_obd, merge_attr)(exp, lsm, attr));
+}
+
 static inline int md_setxattr(struct obd_export *exp,
                               const struct lu_fid *fid, struct obd_capa *oc,
                               obd_valid valid, const char *name,
@@ -2102,13 +1896,13 @@ static inline int md_getxattr(struct obd_export *exp,
 }
 
 static inline int md_set_open_replay_data(struct obd_export *exp,
-                                          struct obd_client_handle *och,
-                                          struct ptlrpc_request *open_req)
+                                         struct obd_client_handle *och,
+                                         struct lookup_intent *it)
 {
-        ENTRY;
-        EXP_CHECK_MD_OP(exp, set_open_replay_data);
-        EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
-        RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, open_req));
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, set_open_replay_data);
+       EXP_MD_COUNTER_INCREMENT(exp, set_open_replay_data);
+       RETURN(MDP(exp->exp_obd, set_open_replay_data)(exp, och, it));
 }
 
 static inline int md_clear_open_replay_data(struct obd_export *exp,
@@ -2162,13 +1956,14 @@ static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
 }
 
 static inline int md_init_ea_size(struct obd_export *exp, int easize,
-                                  int def_asize, int cookiesize)
+                                 int def_asize, int cookiesize,
+                                 int def_cookiesize)
 {
-        ENTRY;
-        EXP_CHECK_MD_OP(exp, init_ea_size);
-        EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
-        RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
-                                               cookiesize));
+       ENTRY;
+       EXP_CHECK_MD_OP(exp, init_ea_size);
+       EXP_MD_COUNTER_INCREMENT(exp, init_ea_size);
+       RETURN(MDP(exp->exp_obd, init_ea_size)(exp, easize, def_asize,
+                                              cookiesize, def_cookiesize));
 }
 
 static inline int md_get_remote_perm(struct obd_export *exp,
@@ -2242,7 +2037,7 @@ extern struct kmem_cache *obdo_cachep;
 
 #define OBDO_ALLOC(ptr)                                                       \
 do {                                                                          \
-       OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, __GFP_IO);             \
+       OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, GFP_NOFS);             \
 } while(0)
 
 #define OBDO_FREE(ptr)                                                        \
@@ -2282,7 +2077,8 @@ extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
 int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
                             register_lwp_cb cb_func, void *cb_data);
 void lustre_deregister_lwp_item(struct obd_export **exp);
-int tgt_name2lwpname(const char *tgt_name, char *lwp_name);
+struct obd_export *lustre_find_lwp_by_index(const char *dev, __u32 idx);
+int tgt_name2lwp_name(const char *tgt_name, char *lwp_name, int len, __u32 idx);
 #endif /* HAVE_SERVER_SUPPORT */
 
 /* sysctl.c */
@@ -2301,11 +2097,22 @@ int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
 void class_init_uuidlist(void);
 void class_exit_uuidlist(void);
 
-/* mea.c */
-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 */
 #define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
 
+/* root squash info */
+struct rw_semaphore;
+struct root_squash_info {
+       uid_t                   rsi_uid;
+       gid_t                   rsi_gid;
+       struct list_head        rsi_nosquash_nids;
+       struct rw_semaphore     rsi_sem;
+};
+
+#ifdef __KERNEL__
+int server_name2index(const char *svname, __u32 *idx, const char **endptr);
+#else
+# define server_name2index(name, idx, ptr)     do {} while (0)
+#endif
+
 #endif /* __LINUX_OBD_CLASS_H */