Whamcloud - gitweb
LU-1445 fid: Add DATA fid type in fid_request.
[fs/lustre-release.git] / lustre / include / obd.h
index 48ec59e..ae3043c 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -63,7 +63,6 @@
 #include <lu_ref.h>
 #include <lustre_lib.h>
 #include <lustre_export.h>
-#include <lustre_quota.h>
 #include <lustre_fld.h>
 #include <lustre_capa.h>
 
@@ -103,7 +102,7 @@ static inline void loi_init(struct lov_oinfo *loi)
 
 struct lov_stripe_md {
        cfs_atomic_t     lsm_refc;
-        cfs_spinlock_t   lsm_lock;
+       spinlock_t      lsm_lock;
         pid_t            lsm_lock_owner; /* debugging */
 
         /* maximum possible file size, might change as OSTs status changes,
@@ -151,7 +150,7 @@ struct obd_info {
            - while stats, the flags used for control delay/resend.
            - while setattr, the flags used for distinguish punch operation
          */
-        int                     oi_flags;
+       __u64                   oi_flags;
         /* Lock handle specific for every OSC lock. */
         struct lustre_handle   *oi_lockh;
         /* lsm data specific for every OSC. */
@@ -245,7 +244,7 @@ struct obd_type {
         char *typ_name;
         int  typ_refcnt;
         struct lu_device_type *typ_lu;
-        cfs_spinlock_t obd_type_lock;
+       spinlock_t obd_type_lock;
 };
 
 struct brw_page {
@@ -275,10 +274,7 @@ struct obd_device_target {
         struct lu_target         *obt_lut;
 #endif
         __u64                     obt_mount_count;
-        cfs_semaphore_t           obt_quotachecking;
-        struct lustre_quota_ctxt  obt_qctxt;
-        lustre_quota_version_t    obt_qfmt;
-        cfs_rw_semaphore_t        obt_rwsem;
+       struct rw_semaphore       obt_rwsem;
         struct vfsmount          *obt_vfsmnt;
         struct file              *obt_health_check_filp;
        struct osd_properties     obt_osd_properties;
@@ -326,13 +322,13 @@ struct filter_obd {
         cfs_dentry_t        *fo_dentry_O;
         cfs_dentry_t       **fo_dentry_O_groups;
         struct filter_subdirs   *fo_dentry_O_sub;
-        cfs_mutex_t          fo_init_lock;      /* group initialization lock */
-        int                  fo_committed_group;
+       struct mutex            fo_init_lock;   /* group initialization lock*/
+       int                     fo_committed_group;
 
-        cfs_spinlock_t       fo_objidlock;      /* protect fo_lastobjid */
+       spinlock_t              fo_objidlock;   /* protect fo_lastobjid */
 
-        unsigned long        fo_destroys_in_progress;
-        cfs_mutex_t          fo_create_locks[FILTER_SUBDIR_COUNT];
+       unsigned long           fo_destroys_in_progress;
+       struct mutex            fo_create_locks[FILTER_SUBDIR_COUNT];
 
         cfs_list_t fo_export_list;
         int                  fo_subdir_count;
@@ -343,7 +339,7 @@ struct filter_obd {
         int                  fo_tot_granted_clients;
 
         obd_size             fo_readcache_max_filesize;
-        cfs_spinlock_t       fo_flags_lock;
+       spinlock_t              fo_flags_lock;
         unsigned int         fo_read_cache:1,   /**< enable read-only cache */
                              fo_writethrough_cache:1,/**< read cache writes */
                              fo_mds_ost_sync:1, /**< MDS-OST orphan recovery*/
@@ -356,7 +352,7 @@ struct filter_obd {
         __u64               *fo_last_objids; /* last created objid for groups,
                                               * protected by fo_objidlock */
 
-        cfs_mutex_t          fo_alloc_lock;
+       struct mutex            fo_alloc_lock;
 
         cfs_atomic_t         fo_r_in_flight;
         cfs_atomic_t         fo_w_in_flight;
@@ -374,13 +370,10 @@ struct filter_obd {
         */
        struct cfs_hash         *fo_iobuf_hash;
 
-        cfs_list_t               fo_llog_list;
-        cfs_spinlock_t           fo_llog_list_lock;
+       cfs_list_t              fo_llog_list;
+       spinlock_t              fo_llog_list_lock;
 
         struct brw_stats         fo_filter_stats;
-        struct lustre_quota_ctxt fo_quota_ctxt;
-        cfs_spinlock_t           fo_quotacheck_lock;
-        cfs_atomic_t             fo_quotachecking;
 
         int                      fo_fmd_max_num; /* per exp filter_mod_data */
         int                      fo_fmd_max_age; /* jiffies to fmd expiry */
@@ -389,7 +382,7 @@ struct filter_obd {
 
 
         /* sptlrpc stuff */
-        cfs_rwlock_t             fo_sptlrpc_lock;
+       rwlock_t                fo_sptlrpc_lock;
         struct sptlrpc_rule_set  fo_sptlrpc_rset;
 
         /* capability related */
@@ -430,7 +423,7 @@ enum {
 struct mdc_rpc_lock;
 struct obd_import;
 struct client_obd {
-        cfs_rw_semaphore_t       cl_sem;
+       struct rw_semaphore  cl_sem;
         struct obd_uuid          cl_target_uuid;
         struct obd_import       *cl_import; /* ptlrpc connection state */
         int                      cl_conn_count;
@@ -510,16 +503,25 @@ struct client_obd {
         struct obd_histogram     cl_read_offset_hist;
         struct obd_histogram     cl_write_offset_hist;
 
+       /* lru for osc caching pages */
+       struct cl_client_cache  *cl_cache;
+       cfs_list_t               cl_lru_osc; /* member of cl_cache->ccc_lru */
+       cfs_atomic_t            *cl_lru_left;
+       cfs_atomic_t             cl_lru_busy;
+       cfs_atomic_t             cl_lru_shrinkers;
+       cfs_atomic_t             cl_lru_in_list;
+       cfs_list_t               cl_lru_list; /* lru page list */
+       client_obd_lock_t        cl_lru_list_lock; /* page list protector */
+
         /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
         cfs_atomic_t             cl_destroy_in_flight;
         cfs_waitq_t              cl_destroy_waitq;
 
         struct mdc_rpc_lock     *cl_rpc_lock;
         struct mdc_rpc_lock     *cl_close_lock;
-        struct osc_creator       cl_oscc;
 
         /* mgc datastruct */
-        cfs_semaphore_t          cl_mgc_sem;
+       struct semaphore         cl_mgc_sem;
         struct vfsmount         *cl_mgc_vfsmnt;
         struct dentry           *cl_mgc_configs_dir;
         cfs_atomic_t             cl_mgc_refcount;
@@ -535,8 +537,12 @@ struct client_obd {
         /* also protected by the poorly named _loi_list_lock lock above */
         struct osc_async_rc      cl_ar;
 
-        /* used by quotacheck */
-        int                      cl_qchk_stat; /* quotacheck stat of the peer */
+       /* used by quotacheck when the servers are older than 2.4 */
+       int                      cl_qchk_stat; /* quotacheck stat of the peer */
+#define CL_NOT_QUOTACHECKED 1   /* client->cl_qchk_stat init value */
+#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
+#warning "please consider removing quotacheck compatibility code"
+#endif
 
         /* sequence manager */
         struct lu_client_seq    *cl_seq;
@@ -550,72 +556,6 @@ struct client_obd {
 };
 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
 
-#define CL_NOT_QUOTACHECKED 1   /* client->cl_qchk_stat init value */
-
-struct mds_obd {
-        /* NB this field MUST be first */
-        struct obd_device_target         mds_obt;
-        struct ptlrpc_service           *mds_service;
-        struct ptlrpc_service           *mds_setattr_service;
-        struct ptlrpc_service           *mds_readpage_service;
-        int                              mds_max_mdsize;
-        int                              mds_max_cookiesize;
-        __u64                            mds_io_epoch;
-        unsigned long                    mds_atime_diff;
-        struct ll_fid                    mds_rootfid;
-        cfs_dentry_t                    *mds_pending_dir;
-        cfs_dentry_t                    *mds_logs_dir;
-        cfs_dentry_t                    *mds_objects_dir;
-        struct llog_handle              *mds_cfg_llh;
-        struct obd_device               *mds_lov_obd;
-        struct obd_uuid                  mds_lov_uuid;
-        char                            *mds_profile;
-        struct obd_export               *mds_lov_exp;
-        struct lov_desc                  mds_lov_desc;
-        __u32                            mds_id;
-
-        /* mark pages dirty for write. */
-        cfs_bitmap_t                    *mds_lov_page_dirty;
-        /* array for store pages with obd_id */
-        void                           **mds_lov_page_array;
-        /* file for store objid */
-        struct file                     *mds_lov_objid_filp;
-        __u32                            mds_lov_objid_count;
-        __u32                            mds_lov_objid_max_index;
-        __u32                            mds_lov_objid_lastpage;
-        __u32                            mds_lov_objid_lastidx;
-
-
-        struct lustre_quota_info         mds_quota_info;
-        cfs_rw_semaphore_t               mds_qonoff_sem;
-        unsigned long                    mds_fl_user_xattr:1,
-                                         mds_fl_acl:1,
-                                         mds_evict_ost_nids:1,
-                                         mds_fl_cfglog:1,
-                                         mds_fl_synced:1,
-                                         mds_quota:1,
-                                         mds_fl_target:1; /* mds have one or
-                                                           * more targets */
-
-        struct upcall_cache             *mds_identity_cache;
-
-        /* for capability keys update */
-        struct lustre_capa_key          *mds_capa_keys;
-        cfs_rw_semaphore_t               mds_notify_lock;
-};
-
-/* lov objid */
-extern __u32 mds_max_ost_index;
-
-#define MDS_LOV_ALLOC_SIZE (CFS_PAGE_SIZE)
-
-#define OBJID_PER_PAGE() (MDS_LOV_ALLOC_SIZE / sizeof(obd_id))
-
-#define MDS_LOV_OBJID_PAGES_COUNT (mds_max_ost_index/OBJID_PER_PAGE())
-
-extern int mds_lov_init_objids(struct obd_device *obd);
-extern void mds_lov_destroy_objids(struct obd_device *obd);
-
 struct obd_id_info {
         __u32   idx;
         obd_id  *data;
@@ -624,24 +564,24 @@ struct obd_id_info {
 /* */
 
 struct echo_obd {
-        struct obd_device_target eo_obt;
-        struct obdo              eo_oa;
-        cfs_spinlock_t           eo_lock;
-        __u64                    eo_lastino;
-        struct lustre_handle     eo_nl_lock;
-        cfs_atomic_t             eo_prep;
+       struct obd_device_target eo_obt;
+       struct obdo             eo_oa;
+       spinlock_t               eo_lock;
+       __u64                    eo_lastino;
+       struct lustre_handle    eo_nl_lock;
+       cfs_atomic_t            eo_prep;
 };
 
 struct ost_obd {
-        struct ptlrpc_service *ost_service;
-        struct ptlrpc_service *ost_create_service;
-        struct ptlrpc_service *ost_io_service;
-        cfs_mutex_t            ost_health_mutex;
+       struct ptlrpc_service   *ost_service;
+       struct ptlrpc_service   *ost_create_service;
+       struct ptlrpc_service   *ost_io_service;
+       struct mutex            ost_health_mutex;
 };
 
 struct echo_client_obd {
-        struct obd_export   *ec_exp;   /* the local connection to osc/lov */
-        cfs_spinlock_t       ec_lock;
+       struct obd_export       *ec_exp;   /* the local connection to osc/lov */
+       spinlock_t              ec_lock;
         cfs_list_t           ec_objects;
         cfs_list_t           ec_locks;
         int                  ec_nstripes;
@@ -673,7 +613,7 @@ struct ost_pool {
                                                    lov_obd->lov_tgts */
         unsigned int        op_count;      /* number of OSTs in the array */
         unsigned int        op_size;       /* allocated size of lp_array */
-        cfs_rw_semaphore_t  op_rw_sem;     /* to protect ost_pool use */
+       struct rw_semaphore op_rw_sem;     /* to protect ost_pool use */
 };
 
 /* Round-robin allocator data */
@@ -695,7 +635,7 @@ struct lov_statfs_data {
 /* Stripe placement optimization */
 struct lov_qos {
         cfs_list_t          lq_oss_list; /* list of OSSs that targets use */
-        cfs_rw_semaphore_t  lq_rw_sem;
+       struct rw_semaphore lq_rw_sem;
         __u32               lq_active_oss_count;
         unsigned int        lq_prio_free;   /* priority for free space */
         unsigned int        lq_threshold_rr;/* priority for rr */
@@ -748,9 +688,8 @@ struct lov_obd {
         struct lov_tgt_desc   **lov_tgts;              /* sparse array */
         struct ost_pool         lov_packed;            /* all OSTs in a packed
                                                           array */
-        cfs_mutex_t             lov_lock;
+       struct mutex            lov_lock;
         struct obd_connect_data lov_ocd;
-        struct lov_qos          lov_qos;               /* qos info per lov */
         cfs_atomic_t            lov_refcount;
         __u32                   lov_tgt_count;         /* how many OBD's */
         __u32                   lov_active_tgt_count;  /* how many active */
@@ -762,6 +701,9 @@ struct lov_obd {
         cfs_list_t              lov_pool_list; /* used for sequential access */
         cfs_proc_dir_entry_t   *lov_pool_proc_entry;
         enum lustre_sec_part    lov_sp_me;
+
+       /* Cached LRU pages from upper layer */
+       void                   *lov_cache;
 };
 
 struct lmv_tgt_desc {
@@ -769,7 +711,7 @@ struct lmv_tgt_desc {
         struct obd_export      *ltd_exp;
         int                     ltd_active; /* is this target up for requests */
         int                     ltd_idx;
-        cfs_mutex_t             ltd_fid_mutex;
+       struct mutex            ltd_fid_mutex;
 };
 
 enum placement_policy {
@@ -782,9 +724,9 @@ enum placement_policy {
 typedef enum placement_policy placement_policy_t;
 
 struct lmv_obd {
-        int                     refcount;
-        struct lu_client_fld    lmv_fld;
-        cfs_spinlock_t          lmv_lock;
+       int                     refcount;
+       struct lu_client_fld    lmv_fld;
+       spinlock_t              lmv_lock;
         placement_policy_t      lmv_placement;
         struct lmv_desc         desc;
         struct obd_uuid         cluuid;
@@ -795,7 +737,7 @@ struct lmv_obd {
         int                     max_def_easize;
         int                     max_cookiesize;
         int                     server_timeout;
-        cfs_mutex_t             init_mutex;
+       struct mutex            init_mutex;
 
         struct lmv_tgt_desc     *tgts;
         int                     tgts_size;
@@ -846,6 +788,7 @@ struct niobuf_local {
 #define LUSTRE_CACHEOBD_NAME    "cobd"
 #define LUSTRE_ECHO_NAME        "obdecho"
 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
+#define LUSTRE_QMT_NAME         "qmt"
 
 /* Constant obd names (post-rename) */
 #define LUSTRE_MDS_OBDNAME "MDS"
@@ -1009,10 +952,10 @@ struct obd_notify_upcall {
 };
 
 struct target_recovery_data {
-        svc_handler_t     trd_recovery_handler;
-        pid_t             trd_processing_task;
-        cfs_completion_t  trd_starting;
-        cfs_completion_t  trd_finishing;
+       svc_handler_t           trd_recovery_handler;
+       pid_t                   trd_processing_task;
+       struct completion       trd_starting;
+       struct completion       trd_finishing;
 };
 
 /**
@@ -1051,10 +994,10 @@ struct obd_llog_group {
         int                olg_seq;
         struct llog_ctxt  *olg_ctxts[LLOG_MAX_CTXTS];
         cfs_waitq_t        olg_waitq;
-        cfs_spinlock_t     olg_lock;
-        struct obd_export *olg_exp;
-        int                olg_initializing;
-        cfs_mutex_t        olg_cat_processing;
+       spinlock_t         olg_lock;
+       struct obd_export *olg_exp;
+       int                olg_initializing;
+       struct mutex       olg_cat_processing;
 };
 
 /* corresponds to one of the obd's */
@@ -1107,21 +1050,21 @@ struct obd_device {
         cfs_list_t              obd_unlinked_exports;
         cfs_list_t              obd_delayed_exports;
         int                     obd_num_exports;
-        cfs_spinlock_t          obd_nid_lock;
-        struct ldlm_namespace  *obd_namespace;
-        struct ptlrpc_client    obd_ldlm_client; /* XXX OST/MDS only */
-        /* a spinlock is OK for what we do now, may need a semaphore later */
-        cfs_spinlock_t          obd_dev_lock; /* protects obd bitfield above */
-        cfs_mutex_t             obd_dev_mutex;
-        __u64                   obd_last_committed;
-        struct fsfilt_operations *obd_fsops;
-        cfs_spinlock_t          obd_osfs_lock;
-        struct obd_statfs       obd_osfs;       /* locked by obd_osfs_lock */
-        __u64                   obd_osfs_age;
-        struct lvfs_run_ctxt    obd_lvfs_ctxt;
-        struct obd_llog_group   obd_olg; /* default llog group */
-        struct obd_device      *obd_observer;
-        cfs_rw_semaphore_t      obd_observer_link_sem;
+       spinlock_t              obd_nid_lock;
+       struct ldlm_namespace  *obd_namespace;
+       struct ptlrpc_client    obd_ldlm_client; /* XXX OST/MDS only */
+       /* a spinlock is OK for what we do now, may need a semaphore later */
+       spinlock_t              obd_dev_lock; /* protect OBD bitfield above */
+       struct mutex            obd_dev_mutex;
+       __u64                   obd_last_committed;
+       struct fsfilt_operations *obd_fsops;
+       spinlock_t              obd_osfs_lock;
+       struct obd_statfs       obd_osfs;       /* locked by obd_osfs_lock */
+       __u64                   obd_osfs_age;
+       struct lvfs_run_ctxt    obd_lvfs_ctxt;
+       struct obd_llog_group   obd_olg;        /* default llog group */
+       struct obd_device       *obd_observer;
+       struct rw_semaphore     obd_observer_link_sem;
         struct obd_notify_upcall obd_upcall;
         struct obd_export       *obd_self_export;
         /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
@@ -1134,7 +1077,7 @@ struct obd_device {
         int                              obd_delayed_clients;
         /* this lock protects all recovery list_heads, timer and
          * obd_next_recovery_transno value */
-        cfs_spinlock_t                   obd_recovery_task_lock;
+       spinlock_t                       obd_recovery_task_lock;
         __u64                            obd_next_recovery_transno;
         int                              obd_replayed_requests;
         int                              obd_requests_queued_for_recovery;
@@ -1161,7 +1104,6 @@ struct obd_device {
         union {
                 struct obd_device_target obt;
                 struct filter_obd filter;
-                struct mds_obd mds;
                 struct client_obd cli;
                 struct ost_obd ost;
                 struct echo_client_obd echo_client;
@@ -1187,7 +1129,7 @@ struct obd_device {
         /**
          * Ldlm pool part. Save last calculated SLV and Limit.
          */
-        cfs_rwlock_t           obd_pool_lock;
+       rwlock_t                obd_pool_lock;
         int                    obd_pool_limit;
         __u64                  obd_pool_slv;
 
@@ -1238,7 +1180,6 @@ enum obd_cleanup_stage {
 #define KEY_NEXT_ID             "next_id"
 #define KEY_READ_ONLY           "read-only"
 #define KEY_REGISTER_TARGET     "register_target"
-#define KEY_REVIMP_UPD          "revimp_update"
 #define KEY_SET_FS              "set_fs"
 #define KEY_TGT_COUNT           "tgt_count"
 /*      KEY_SET_INFO in lustre_idl.h */
@@ -1246,6 +1187,9 @@ enum obd_cleanup_stage {
 #define KEY_CONNECT_FLAG        "connect_flags"
 #define KEY_SYNC_LOCK_CANCEL    "sync_lock_cancel"
 
+#define KEY_CACHE_SET          "cache_set"
+#define KEY_CACHE_LRU_SHRINK   "cache_lru_shrink"
+
 struct lu_context;
 
 /* /!\ must be coherent with include/linux/namei.h on patched kernel */
@@ -1328,6 +1272,12 @@ typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req,
                                 struct md_enqueue_info *minfo,
                                 int rc);
 
+/* seq client type */
+enum lu_cli_type {
+       LUSTRE_SEQ_METADATA = 1,
+       LUSTRE_SEQ_DATA
+};
+
 struct md_enqueue_info {
         struct md_op_data       mi_data;
         struct lookup_intent    mi_it;
@@ -1377,7 +1327,7 @@ struct obd_ops {
         int (*o_disconnect)(struct obd_export *exp);
 
         /* Initialize/finalize fids infrastructure. */
-        int (*o_fid_init)(struct obd_export *exp);
+       int (*o_fid_init)(struct obd_export *exp, enum lu_cli_type type);
         int (*o_fid_fini)(struct obd_export *exp);
 
         /* Allocate new fid according to passed @hint. */
@@ -1388,8 +1338,6 @@ struct obd_ops {
          * Object with @fid is getting deleted, we may want to do something
          * about this.
          */
-        int (*o_fid_delete)(struct obd_export *exp, const struct lu_fid *fid);
-
         int (*o_statfs)(const struct lu_env *, struct obd_export *exp,
                         struct obd_statfs *osfs, __u64 max_age, __u32 flags);
         int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo,
@@ -1568,7 +1516,7 @@ struct md_ops {
         int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *,
                          struct lookup_intent *, struct md_op_data *,
                          struct lustre_handle *, void *, int,
-                         struct ptlrpc_request **, int);
+                        struct ptlrpc_request **, __u64);
         int (*m_getattr)(struct obd_export *, struct md_op_data *,
                          struct ptlrpc_request **);
         int (*m_getattr_name)(struct obd_export *, struct md_op_data *,
@@ -1576,7 +1524,7 @@ struct md_ops {
         int (*m_intent_lock)(struct obd_export *, struct md_op_data *,
                              void *, int, struct lookup_intent *, int,
                              struct ptlrpc_request **,
-                             ldlm_blocking_callback, int);
+                            ldlm_blocking_callback, __u64);
         int (*m_link)(struct obd_export *, struct md_op_data *,
                       struct ptlrpc_request **);
         int (*m_rename)(struct obd_export *, struct md_op_data *,
@@ -1621,7 +1569,7 @@ struct md_ops {
                                         struct obd_client_handle *);
         int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *);
 
-        ldlm_mode_t (*m_lock_match)(struct obd_export *, int,
+       ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64,
                                     const struct lu_fid *, ldlm_type_t,
                                     ldlm_policy_data_t *, ldlm_mode_t,
                                     struct lustre_handle *);
@@ -1687,27 +1635,6 @@ int lvfs_check_io_health(struct obd_device *obd, struct file *file);
 #define OBD_CALC_STRIPE_START   1
 #define OBD_CALC_STRIPE_END     2
 
-static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
-                                         struct obd_export *exp, int error)
-{
-        if (error) {
-                CERROR("%s: transno "LPU64" commit error: %d\n",
-                       obd->obd_name, transno, error);
-                return;
-        }
-        if (exp && transno > exp->exp_last_committed) {
-                CDEBUG(D_HA, "%s: transno "LPU64" committed\n",
-                       obd->obd_name, transno);
-                exp->exp_last_committed = transno;
-                ptlrpc_commit_replies(exp);
-        } else {
-                CDEBUG(D_INFO, "%s: transno "LPU64" committed\n",
-                       obd->obd_name, transno);
-        }
-        if (transno > obd->obd_last_committed)
-                obd->obd_last_committed = transno;
-}
-
 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo)
 {
         return oinfo->oi_capa;