lustre/include/linux/obd.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   5  *
   6  * This code is issued under the GNU General Public License.
   7  * See the file COPYING in this distribution
   8  */
   9
  10 #ifndef __OBD_H
  11 #define __OBD_H
  12
  13 #define IOC_OSC_TYPE         'h'
  14 #define IOC_OSC_MIN_NR       20
  15 #define IOC_OSC_SET_ACTIVE   _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
  16 #define IOC_OSC_MAX_NR       50
  17
  18 #define IOC_MDC_TYPE         'i'
  19 #define IOC_MDC_MIN_NR       20
  20 #define IOC_MDC_LOOKUP       _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
  21 #define IOC_MDC_GETSTRIPE    _IOWR(IOC_MDC_TYPE, 21, struct lov_mds_md *)
  22 #define IOC_MDC_MAX_NR       50
  23
  24 #ifdef __KERNEL__
  25 # include <linux/fs.h>
  26 # include <linux/list.h>
  27 # include <linux/sched.h> /* for struct task_struct, for current.h */
  28 # include <asm/current.h> /* for smp_lock.h */
  29 # include <linux/smp_lock.h>
  30 # include <linux/proc_fs.h>
  31 # include <linux/mount.h>
  32 #endif
  33
  34 #include <linux/lustre_lib.h>
  35 #include <linux/lustre_idl.h>
  36 #include <linux/lustre_export.h>
  37
  38 /* this is really local to the OSC */
  39 struct loi_oap_pages {
  40         struct list_head        lop_pending;
  41         int                     lop_num_pending;
  42         struct list_head        lop_urgent;
  43         struct list_head        lop_pending_sync;
  44 };
  45
  46 struct lov_oinfo {                 /* per-stripe data structure */
  47         __u64 loi_id;              /* object ID on the target OST */
  48         __u64 loi_gr;              /* object group on the target OST */
  49         struct lustre_handle *loi_handle; /* open file handle for obj on OST */
  50         int loi_ost_idx;           /* OST stripe index in lov_tgt_desc->tgts */
  51         int loi_ost_gen;           /* generation of this loi_ost_idx */
  52
  53         /* tracking offsets per file, per stripe.. */
  54         struct loi_oap_pages loi_read_lop;
  55         struct loi_oap_pages loi_write_lop;
  56         struct list_head loi_cli_item;
  57 };
  58
  59 static inline void loi_init(struct lov_oinfo *loi)
  60 {
  61         INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending);
  62         INIT_LIST_HEAD(&loi->loi_read_lop.lop_urgent);
  63         INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending_sync);
  64         INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending);
  65         INIT_LIST_HEAD(&loi->loi_write_lop.lop_urgent);
  66         INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending_sync);
  67         INIT_LIST_HEAD(&loi->loi_cli_item);
  68 }
  69
  70 struct lov_stripe_md {
  71         /* Public members. */
  72         __u64 lsm_object_id;        /* lov object id */
  73         __u64 lsm_object_gr;        /* lov object id */
  74         __u64 lsm_maxbytes;
  75
  76         /* LOV-private members start here -- only for use in lov/. */
  77         __u32 lsm_magic;
  78         __u32 lsm_stripe_size;      /* size of the stripe */
  79         __u32 lsm_pattern;          /* striping pattern (RAID0, RAID1) */
  80         unsigned lsm_stripe_count;  /* number of objects being striped over */
  81         struct lov_oinfo lsm_oinfo[0];
  82 };
  83
  84 struct obd_type {
  85         struct list_head typ_chain;
  86         struct obd_ops *typ_ops;
  87         struct proc_dir_entry *typ_procroot;
  88         char *typ_name;
  89         int  typ_refcnt;
  90 };
  91
  92 struct brw_page {
  93         obd_off  off;
  94         struct page *pg;
  95         int count;
  96         obd_flag flag;
  97 };
  98
  99 enum async_flags {
 100         ASYNC_READY = 0x1,
 101         ASYNC_URGENT = 0x2,
 102         ASYNC_COUNT_STABLE = 0x4,
 103 };
 104
 105 struct obd_async_page_ops {
 106         int  (*ap_make_ready)(void *data, int cmd);
 107         int  (*ap_refresh_count)(void *data, int cmd);
 108         void (*ap_fill_obdo)(void *data, int cmd, struct obdo *oa);
 109         void (*ap_completion)(void *data, int cmd, int rc);
 110 };
 111
 112 struct obd_sync_io_container {
 113         spinlock_t      osic_lock;
 114         atomic_t        osic_refcount;
 115         int             osic_pending;
 116         int             osic_rc;
 117         wait_queue_head_t osic_waitq;
 118 };
 119
 120 /* if we find more consumers this could be generalized */
 121 #define OBD_HIST_MAX 32
 122 struct obd_histogram {
 123         spinlock_t      oh_lock;
 124         unsigned long   oh_buckets[OBD_HIST_MAX];
 125 };
 126
 127 /* Individual type definitions */
 128
 129 struct ost_server_data;
 130
 131 struct filter_obd {
 132         const char          *fo_fstype;
 133         struct super_block  *fo_sb;
 134         struct vfsmount     *fo_vfsmnt;
 135         struct dentry       *fo_dentry_O;
 136         struct dentry      **fo_dentry_O_groups;
 137         struct dentry      **fo_dentry_O_sub;
 138         spinlock_t           fo_objidlock; /* protect fo_lastobjid increment */
 139         spinlock_t           fo_translock; /* protect fsd_last_rcvd increment */
 140         struct file         *fo_rcvd_filp;
 141         struct filter_server_data *fo_fsd;
 142         unsigned long       *fo_last_rcvd_slots;
 143         __u64                fo_mount_count;
 144
 145         struct file_operations *fo_fop;
 146         struct inode_operations *fo_iop;
 147         struct address_space_operations *fo_aops;
 148
 149         struct list_head     fo_export_list;
 150         int                  fo_subdir_count;
 151         obd_size             fo_tot_granted; /* protected by obd_osfs_lock */
 152         obd_size             fo_tot_cached;
 153
 154         struct obd_import   *fo_mdc_imp;
 155         struct obd_uuid      fo_mdc_uuid;
 156         struct lustre_handle fo_mdc_conn;
 157 #if 0
 158         struct ptlrpc_client fo_mdc_client;
 159 #endif
 160         struct file        **fo_last_objid_files;
 161         __u64               *fo_last_objids; //last created object ID for groups
 162
 163         struct semaphore     fo_alloc_lock;
 164
 165         struct obd_histogram     fo_r_pages;
 166         struct obd_histogram     fo_w_pages;
 167         struct obd_histogram     fo_r_discont_pages;
 168         struct obd_histogram     fo_w_discont_pages;
 169         struct obd_histogram     fo_r_discont_blocks;
 170         struct obd_histogram     fo_w_discont_blocks;
 171 };
 172
 173 struct mds_server_data;
 174
 175 struct mdc_rpc_lock;
 176 struct client_obd {
 177         struct obd_import       *cl_import;
 178         struct semaphore         cl_sem;
 179         int                      cl_conn_count;
 180         /* max_mds_easize is purely a performance thing so we don't have to
 181          * call obd_size_wiremd() all the time. */
 182         int                      cl_max_mds_easize;
 183         int                      cl_max_mds_cookiesize;
 184         kdev_t                   cl_sandev;
 185
 186         //struct llog_canceld_ctxt *cl_llcd; /* it's included by obd_llog_ctxt */
 187         void                    *cl_llcd_offset;
 188
 189         obd_size                 cl_dirty;  /* all _dirty_ in bytes */
 190         obd_size                 cl_dirty_granted; /* from ost */
 191         obd_size                 cl_dirty_max; /* allowed w/o rpc */
 192         struct list_head         cl_cache_waiters;
 193
 194         struct obd_device       *cl_mgmtcli_obd;
 195
 196         /* this is just to keep existing infinitely caching behaviour between
 197          * clients and OSTs that don't have the grant code in yet.. it can
 198          * be yanked once everything speaks grants */
 199         char                     cl_ost_can_grant;
 200
 201         /* keep track of objects that have lois that contain pages which
 202          * have been queued for async brw.  this lock also protects the
 203          * lists of obd_client_pages that hang off of the loi */
 204         spinlock_t               cl_loi_list_lock;
 205         struct list_head         cl_loi_ready_list;
 206         int                      cl_brw_in_flight;
 207         /* just a sum of the loi/lop pending numbers to be exported by /proc */
 208         int                      cl_pending_w_pages;
 209         int                      cl_pending_r_pages;
 210         int                      cl_max_pages_per_rpc;
 211         int                      cl_max_rpcs_in_flight;
 212         struct obd_histogram     cl_read_rpc_hist;
 213         struct obd_histogram     cl_write_rpc_hist;
 214         struct obd_histogram     cl_read_page_hist;
 215         struct obd_histogram     cl_write_page_hist;
 216
 217         struct mdc_rpc_lock     *cl_rpc_lock;
 218         struct mdc_rpc_lock     *cl_setattr_lock;
 219 };
 220
 221 /* Like a client, with some hangers-on.  Keep mc_client_obd first so that we
 222  * can reuse the various client setup/connect functions. */
 223 struct mgmtcli_obd {
 224         struct client_obd        mc_client_obd; /* nested */
 225         struct ptlrpc_thread    *mc_ping_thread;
 226         struct obd_export       *mc_ping_exp; /* XXX single-target */
 227         struct list_head         mc_registered;
 228         void                    *mc_hammer;
 229 };
 230
 231 #define mc_import mc_client_obd.cl_import
 232
 233 struct mds_obd {
 234         struct ptlrpc_service           *mds_service;
 235         struct ptlrpc_service           *mds_setattr_service;
 236         struct ptlrpc_service           *mds_readpage_service;
 237         struct super_block              *mds_sb;
 238         struct vfsmount                 *mds_vfsmnt;
 239         struct dentry                   *mds_fid_de;
 240         int                              mds_max_mdsize;
 241         int                              mds_max_cookiesize;
 242         struct file                     *mds_rcvd_filp;
 243         spinlock_t                       mds_transno_lock;
 244         __u64                            mds_last_transno;
 245         __u64                            mds_mount_count;
 246         __u64                            mds_io_epoch;
 247         struct semaphore                 mds_epoch_sem;
 248         struct ll_fid                    mds_rootfid;
 249         struct mds_server_data          *mds_server_data;
 250         struct dentry                   *mds_pending_dir;
 251         struct dentry                   *mds_logs_dir;
 252         struct dentry                   *mds_objects_dir;
 253         struct llog_handle              *mds_cfg_llh;
 254 //        struct llog_handle              *mds_catalog;
 255         struct obd_device               *mds_osc_obd; /* XXX lov_obd */
 256         struct obd_uuid                  mds_lov_uuid;
 257         char                            *mds_profile;
 258         struct obd_export               *mds_osc_exp; /* XXX lov_exp */
 259         int                              mds_has_lov_desc;
 260         struct lov_desc                  mds_lov_desc;
 261         obd_id                          *mds_lov_objids;
 262         int                              mds_lov_objids_valid;
 263         int                              mds_lov_nextid_set;
 264         struct file                     *mds_lov_objid_filp;
 265         unsigned long                   *mds_client_bitmap;
 266         struct semaphore                 mds_orphan_recovery_sem;
 267
 268         atomic_t                         mds_open_count;
 269 };
 270
 271 struct echo_obd {
 272         struct obdo oa;
 273         spinlock_t eo_lock;
 274         __u64 eo_lastino;
 275         atomic_t eo_getattr;
 276         atomic_t eo_setattr;
 277         atomic_t eo_create;
 278         atomic_t eo_destroy;
 279         atomic_t eo_prep;
 280         atomic_t eo_read;
 281         atomic_t eo_write;
 282 };
 283
 284 /*
 285  * this struct does double-duty acting as either a client or
 286  * server instance .. maybe not wise.
 287  */
 288 struct ptlbd_obd {
 289         /* server's */
 290         struct ptlrpc_service *ptlbd_service;
 291         struct file *filp;
 292         /* client's */
 293         struct ptlrpc_client    bd_client;
 294         struct obd_import       *bd_import;
 295         struct obd_uuid         bd_server_uuid;
 296         struct obd_export       *bd_exp;
 297         int refcount; /* XXX sigh */
 298 };
 299
 300 struct recovd_obd {
 301         spinlock_t            recovd_lock;
 302         struct list_head      recovd_managed_items; /* items managed  */
 303         struct list_head      recovd_troubled_items; /* items in recovery */
 304
 305         wait_queue_head_t     recovd_recovery_waitq;
 306         wait_queue_head_t     recovd_ctl_waitq;
 307         wait_queue_head_t     recovd_waitq;
 308         struct task_struct   *recovd_thread;
 309         __u32                 recovd_state;
 310 };
 311
 312 struct ost_obd {
 313         struct ptlrpc_service *ost_service;
 314         struct ptlrpc_service *ost_create_service;
 315 };
 316
 317 struct echo_client_obd {
 318         struct obd_export   *ec_exp;   /* the local connection to osc/lov */
 319         spinlock_t           ec_lock;
 320         struct list_head     ec_objects;
 321         int                  ec_nstripes;
 322         __u64                ec_unique;
 323 };
 324
 325 struct cache_obd {
 326         struct obd_export *cobd_target_exp;/* local connection to target obd */
 327         struct obd_export *cobd_cache_exp; /* local connection to cache obd */
 328 };
 329
 330 struct lov_tgt_desc {
 331         struct obd_uuid          uuid;
 332         struct obd_export       *ltd_exp;
 333         int                      active; /* is this target up for requests */
 334 };
 335
 336 struct lov_obd {
 337         spinlock_t lov_lock;
 338         struct lov_desc desc;
 339         int bufsize;
 340         int refcount;
 341         int lo_catalog_loaded:1;
 342         struct lov_tgt_desc *tgts;
 343 };
 344
 345 struct niobuf_local {
 346         __u64 offset;
 347         __u32 len;
 348         __u32 flags;
 349         int rc;
 350         struct page *page;
 351         struct dentry *dentry;
 352         unsigned long start;
 353 };
 354
 355
 356 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
 357 #define N_LOCAL_TEMP_PAGE 0x10000000
 358
 359 struct obd_trans_info {
 360         __u64                    oti_transno;
 361         __u64                   *oti_objid;
 362         /* Only used on the server side for tracking acks. */
 363         struct oti_req_ack_lock {
 364                 struct lustre_handle lock;
 365                 __u32                mode;
 366         }                        oti_ack_locks[4];
 367         void                    *oti_handle;
 368         struct llog_cookie       oti_onecookie;
 369         struct llog_cookie      *oti_logcookies;
 370         int                      oti_numcookies;
 371 };
 372
 373 static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
 374 {
 375         if (!oti)
 376                 return;
 377
 378         if (num_cookies == 1)
 379                 oti->oti_logcookies = &oti->oti_onecookie;
 380         else
 381                 OBD_ALLOC(oti->oti_logcookies,
 382                           num_cookies * sizeof(oti->oti_onecookie));
 383
 384         oti->oti_numcookies = num_cookies;
 385 }
 386
 387 static inline void oti_free_cookies(struct obd_trans_info *oti)
 388 {
 389         if (!oti || !oti->oti_logcookies)
 390                 return;
 391
 392         if (oti->oti_logcookies == &oti->oti_onecookie)
 393                 LASSERT(oti->oti_numcookies == 1);
 394         else
 395                 OBD_FREE(oti->oti_logcookies,
 396                          oti->oti_numcookies * sizeof(oti->oti_onecookie));
 397         oti->oti_logcookies = NULL;
 398         oti->oti_numcookies = 0;
 399 }
 400
 401 /* llog contexts */
 402 enum llog_ctxt_id {
 403         LLOG_CONFIG_ORIG_CTXT =  0,
 404         LLOG_CONFIG_REPL_CTXT =  1,
 405         LLOG_UNLINK_ORIG_CTXT =  2,
 406         LLOG_UNLINK_REPL_CTXT =  3,
 407         LLOG_SIZE_ORIG_CTXT   =  4,
 408         LLOG_SIZE_REPL_CTXT   =  5,
 409         LLOG_MD_ORIG_CTXT     =  6,
 410         LLOG_MD_REPL_CTXT     =  7,
 411         LLOG_RD1_ORIG_CTXT    =  8,
 412         LLOG_RD1_REPL_CTXT    =  9,
 413         LLOG_TEST_ORIG_CTXT   = 10,
 414         LLOG_TEST_REPL_CTXT   = 11,
 415         LLOG_MAX_CTXTS
 416 };
 417
 418
 419 /* corresponds to one of the obd's */
 420 struct obd_device {
 421         struct obd_type *obd_type;
 422
 423         /* common and UUID name of this device */
 424         char *obd_name;
 425         struct obd_uuid obd_uuid;
 426
 427         int obd_minor;
 428         int obd_attached:1, obd_set_up:1, obd_recovering:1,
 429             obd_abort_recovery:1, obd_replayable:1, obd_no_transno:1,
 430             obd_no_recov:1, obd_stopping:1;
 431         atomic_t obd_refcount;
 432         wait_queue_head_t obd_refcount_waitq;
 433         struct proc_dir_entry *obd_proc_entry;
 434         struct list_head       obd_exports;
 435         int                    obd_num_exports;
 436         struct ldlm_namespace *obd_namespace;
 437         struct ptlrpc_client   obd_ldlm_client; /* XXX OST/MDS only */
 438         /* a spinlock is OK for what we do now, may need a semaphore later */
 439         spinlock_t             obd_dev_lock;
 440         __u64                  obd_last_committed;
 441         struct fsfilt_operations *obd_fsops;
 442         spinlock_t              obd_osfs_lock;
 443         struct llog_ctxt        *obd_llog_ctxt[LLOG_MAX_CTXTS];
 444         struct obd_statfs       obd_osfs;
 445         unsigned long           obd_osfs_age;
 446         struct obd_run_ctxt     obd_ctxt;
 447         struct obd_device       *obd_observer;
 448         struct obd_export       *obd_self_export;
 449
 450         /* XXX encapsulate all this recovery data into one struct */
 451         svc_handler_t                    obd_recovery_handler;
 452         int                              obd_max_recoverable_clients;
 453         int                              obd_connected_clients;
 454         int                              obd_recoverable_clients;
 455         spinlock_t                       obd_processing_task_lock;
 456         pid_t                            obd_processing_task;
 457         __u64                            obd_next_recovery_transno;
 458         int                              obd_replayed_requests;
 459         int                              obd_requests_queued_for_recovery;
 460         wait_queue_head_t                obd_next_transno_waitq;
 461         wait_queue_head_t                obd_commit_waitq;
 462         struct timer_list                obd_recovery_timer;
 463         struct list_head                 obd_recovery_queue;
 464         struct list_head                 obd_delayed_reply_queue;
 465
 466         union {
 467                 struct filter_obd filter;
 468                 struct mds_obd mds;
 469                 struct client_obd cli;
 470                 struct ost_obd ost;
 471                 struct echo_client_obd echo_client;
 472                 struct echo_obd echo;
 473                 struct recovd_obd recovd;
 474                 struct lov_obd lov;
 475                 struct cache_obd cobd;
 476                 struct ptlbd_obd ptlbd;
 477                 struct mgmtcli_obd mgmtcli;
 478         } u;
 479        /* Fields used by LProcFS */
 480         unsigned int           obd_cntr_base;
 481         struct lprocfs_stats  *obd_stats;
 482         struct proc_dir_entry *obd_svc_procroot;
 483         struct lprocfs_stats  *obd_svc_stats;
 484 };
 485
 486 #define OBD_OPT_FORCE           0x0001
 487 #define OBD_OPT_FAILOVER        0x0002
 488
 489 #define OBD_LLOG_FL_SENDNOW     0x0001
 490
 491 struct obd_ops {
 492         struct module *o_owner;
 493         int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
 494                            void *karg, void *uarg);
 495         int (*o_get_info)(struct obd_export *, __u32 keylen, void *key,
 496                           __u32 *vallen, void *val);
 497         int (*o_set_info)(struct obd_export *, __u32 keylen, void *key,
 498                           __u32 vallen, void *val);
 499         int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
 500         int (*o_detach)(struct obd_device *dev);
 501         int (*o_setup) (struct obd_device *dev, obd_count len, void *data);
 502         int (*o_postsetup) (struct obd_device *dev);
 503         int (*o_precleanup)(struct obd_device *dev, int flags);
 504         int (*o_cleanup)(struct obd_device *dev, int flags);
 505         int (*o_postrecov)(struct obd_device *dev);
 506         int (*o_connect)(struct lustre_handle *conn, struct obd_device *src,
 507                          struct obd_uuid *cluuid);
 508         int (*o_disconnect)(struct obd_export *exp, int flags);
 509
 510         int (*o_statfs)(struct obd_device *obd, struct obd_statfs *osfs,
 511                         unsigned long max_age);
 512         int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
 513                         struct lov_stripe_md *mem_src);
 514         int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
 515                           struct lov_mds_md *disk_src, int disk_len);
 516         int (*o_preallocate)(struct lustre_handle *, obd_count *req,
 517                              obd_id *ids);
 518         int (*o_create)(struct obd_export *exp,  struct obdo *oa,
 519                         struct lov_stripe_md **ea, struct obd_trans_info *oti);
 520         int (*o_destroy)(struct obd_export *exp, struct obdo *oa,
 521                          struct lov_stripe_md *ea, struct obd_trans_info *oti);
 522         int (*o_setattr)(struct obd_export *exp, struct obdo *oa,
 523                          struct lov_stripe_md *ea, struct obd_trans_info *oti);
 524         int (*o_getattr)(struct obd_export *exp, struct obdo *oa,
 525                          struct lov_stripe_md *ea);
 526         int (*o_getattr_async)(struct obd_export *exp, struct obdo *oa,
 527                                struct lov_stripe_md *ea,
 528                                struct ptlrpc_request_set *set);
 529         int (*o_brw)(int rw, struct obd_export *exp, struct obdo *oa,
 530                      struct lov_stripe_md *ea, obd_count oa_bufs,
 531                      struct brw_page *pgarr, struct obd_trans_info *oti);
 532         int (*o_brw_async)(int rw, struct obd_export *exp, struct obdo *oa,
 533                            struct lov_stripe_md *ea, obd_count oa_bufs,
 534                            struct brw_page *pgarr, struct ptlrpc_request_set *,
 535                            struct obd_trans_info *oti);
 536         int (*o_prep_async_page)(struct obd_export *exp,
 537                                  struct lov_stripe_md *lsm,
 538                                  struct lov_oinfo *loi,
 539                                  struct page *page, obd_off offset,
 540                                  struct obd_async_page_ops *ops, void *data,
 541                                  void **res);
 542         int (*o_queue_async_io)(struct obd_export *exp,
 543                                 struct lov_stripe_md *lsm,
 544                                 struct lov_oinfo *loi, void *cookie,
 545                                 int cmd, obd_off off, int count,
 546                                 obd_flag brw_flags, obd_flag async_flags);
 547         int (*o_queue_sync_io)(struct obd_export *exp,
 548                                struct lov_stripe_md *lsm,
 549                                struct lov_oinfo *loi,
 550                                struct obd_sync_io_container *osic,
 551                                void *cookie, int cmd, obd_off off, int count,
 552                                obd_flag brw_flags);
 553         int (*o_trigger_sync_io)(struct obd_export *exp,
 554                                  struct lov_stripe_md *lsm,
 555                                  struct lov_oinfo *loi,
 556                                  struct obd_sync_io_container *osic);
 557         int (*o_set_async_flags)(struct obd_export *exp,
 558                                 struct lov_stripe_md *lsm,
 559                                 struct lov_oinfo *loi, void *cookie,
 560                                 obd_flag async_flags);
 561         int (*o_teardown_async_page)(struct obd_export *exp,
 562                                      struct lov_stripe_md *lsm,
 563                                      struct lov_oinfo *loi, void *cookie);
 564         int (*o_punch)(struct obd_export *exp, struct obdo *oa,
 565                        struct lov_stripe_md *ea, obd_size start,
 566                        obd_size end, struct obd_trans_info *oti);
 567         int (*o_sync)(struct obd_export *exp, struct obdo *oa,
 568                       struct lov_stripe_md *ea, obd_size start, obd_size end);
 569         int (*o_migrate)(struct lustre_handle *conn, struct lov_stripe_md *dst,
 570                          struct lov_stripe_md *src, obd_size start,
 571                          obd_size end, struct obd_trans_info *oti);
 572         int (*o_copy)(struct lustre_handle *dstconn, struct lov_stripe_md *dst,
 573                       struct lustre_handle *srconn, struct lov_stripe_md *src,
 574                       obd_size start, obd_size end, struct obd_trans_info *);
 575         int (*o_iterate)(struct lustre_handle *conn,
 576                          int (*)(obd_id, obd_gr, void *),
 577                          obd_id *startid, obd_gr group, void *data);
 578         int (*o_preprw)(int cmd, struct obd_export *exp, struct obdo *oa,
 579                         int objcount, struct obd_ioobj *obj,
 580                         int niocount, struct niobuf_remote *remote,
 581                         struct niobuf_local *local, struct obd_trans_info *oti);
 582         int (*o_commitrw)(int cmd, struct obd_export *exp, struct obdo *oa,
 583                           int objcount, struct obd_ioobj *obj,
 584                           int niocount, struct niobuf_local *local,
 585                           struct obd_trans_info *oti);
 586         int (*o_enqueue)(struct obd_export *exp, struct lov_stripe_md *md,
 587                          struct lustre_handle *parent_lock,
 588                          __u32 type, void *cookie, int cookielen, __u32 mode,
 589                          int *flags, void *cb, void *data,
 590                          struct lustre_handle *lockh);
 591         int (*o_match)(struct obd_export *exp, struct lov_stripe_md *md,
 592                          __u32 type, void *cookie, int cookielen, __u32 mode,
 593                          int *flags, void *data, struct lustre_handle *lockh);
 594         int (*o_change_cbdata)(struct obd_export *exp,
 595                                struct lov_stripe_md *lsm, ldlm_iterator_t it,
 596                                void *data);
 597         int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md,
 598                         __u32 mode, struct lustre_handle *);
 599         int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *,
 600                                int flags, void *opaque);
 601         int (*o_san_preprw)(int cmd, struct obd_export *exp,
 602                             struct obdo *oa, int objcount,
 603                             struct obd_ioobj *obj, int niocount,
 604                             struct niobuf_remote *remote);
 605         int (*o_init_export)(struct obd_export *exp);
 606         int (*o_destroy_export)(struct obd_export *exp);
 607
 608         /* llog related obd_methods */
 609         int (*o_llog_init)(struct obd_device *obd, struct obd_device *disk_obd,
 610                            int count, struct llog_logid *logid);
 611         int (*o_llog_finish)(struct obd_device *obd, int count);
 612
 613         /* only until proper file size mechanics arrive */
 614         int (*o_lock_contains)(struct obd_export *exp,
 615                                struct lov_stripe_md *lsm,
 616                                struct ldlm_lock *lock, obd_off offset);
 617
 618         /* metadata-only methods */
 619         int (*o_pin)(struct obd_export *, obd_id ino, __u32 gen, int type,
 620                      struct obd_client_handle *, int flag);
 621         int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
 622
 623         int (*o_invalidate_import)(struct obd_device *, struct obd_import *);
 624
 625         int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
 626                         int active);
 627         /*
 628          * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
 629          * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
 630          * Also, add a wrapper function in include/linux/obd_class.h.
 631          */
 632
 633 };
 634
 635
 636 static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
 637                                          int error)
 638 {
 639         if (error) {
 640                 CERROR("%s: transno "LPD64" commit error: %d\n",
 641                        obd->obd_name, transno, error);
 642                 return;
 643         }
 644         CDEBUG(D_HA, "%s: transno "LPD64" committed\n",
 645                obd->obd_name, transno);
 646         if (transno > obd->obd_last_committed) {
 647                 obd->obd_last_committed = transno;
 648                 wake_up(&obd->obd_commit_waitq);
 649         }
 650 }
 651
 652 #endif /* __OBD_H */