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         int loi_ost_idx;           /* OST stripe index in lov_tgt_desc->tgts */
  50         int loi_ost_gen;           /* generation of this loi_ost_idx */
  51
  52         /* used by the osc to keep track of what objects to build into rpcs */
  53         struct loi_oap_pages loi_read_lop;
  54         struct loi_oap_pages loi_write_lop;
  55         /* _cli_ is poorly named, it should be _ready_ */
  56         struct list_head loi_cli_item;
  57         struct list_head        loi_write_item;
  58 };
  59
  60 static inline void loi_init(struct lov_oinfo *loi)
  61 {
  62         INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending);
  63         INIT_LIST_HEAD(&loi->loi_read_lop.lop_urgent);
  64         INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending_sync);
  65         INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending);
  66         INIT_LIST_HEAD(&loi->loi_write_lop.lop_urgent);
  67         INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending_sync);
  68         INIT_LIST_HEAD(&loi->loi_cli_item);
  69         INIT_LIST_HEAD(&loi->loi_write_item);
  70 }
  71
  72 struct lov_stripe_md {
  73         /* Public members. */
  74         __u64 lsm_object_id;        /* lov object id */
  75         __u64 lsm_object_gr;        /* lov object id */
  76         __u64 lsm_maxbytes;
  77
  78         /* LOV-private members start here -- only for use in lov/. */
  79         __u32 lsm_magic;
  80         __u32 lsm_stripe_size;      /* size of the stripe */
  81         __u32 lsm_pattern;          /* striping pattern (RAID0, RAID1) */
  82         unsigned lsm_stripe_count;  /* number of objects being striped over */
  83         struct lov_oinfo lsm_oinfo[0];
  84 };
  85
  86 struct obd_type {
  87         struct list_head typ_chain;
  88         struct obd_ops *typ_ops;
  89         struct proc_dir_entry *typ_procroot;
  90         char *typ_name;
  91         int  typ_refcnt;
  92 };
  93
  94 struct brw_page {
  95         obd_off  off;
  96         struct page *pg;
  97         int count;
  98         obd_flag flag;
  99 };
 100
 101 enum async_flags {
 102         ASYNC_READY = 0x1,
 103         ASYNC_URGENT = 0x2,
 104         ASYNC_COUNT_STABLE = 0x4,
 105 };
 106
 107 struct obd_async_page_ops {
 108         int  (*ap_make_ready)(void *data, int cmd);
 109         int  (*ap_refresh_count)(void *data, int cmd);
 110         void (*ap_fill_obdo)(void *data, int cmd, struct obdo *oa);
 111         void (*ap_completion)(void *data, int cmd, int rc);
 112 };
 113
 114 struct obd_sync_io_container {
 115         spinlock_t      osic_lock;
 116         atomic_t        osic_refcount;
 117         int             osic_pending;
 118         int             osic_rc;
 119         wait_queue_head_t osic_waitq;
 120 };
 121
 122 /* if we find more consumers this could be generalized */
 123 #define OBD_HIST_MAX 32
 124 struct obd_histogram {
 125         spinlock_t      oh_lock;
 126         unsigned long   oh_buckets[OBD_HIST_MAX];
 127 };
 128
 129 /* Individual type definitions */
 130
 131 struct ost_server_data;
 132
 133 struct filter_obd {
 134         const char          *fo_fstype;
 135         struct super_block  *fo_sb;
 136         struct vfsmount     *fo_vfsmnt;
 137         struct dentry       *fo_dentry_O;
 138         struct dentry      **fo_dentry_O_groups;
 139         struct dentry      **fo_dentry_O_sub;
 140         spinlock_t           fo_objidlock; /* protect fo_lastobjid increment */
 141         spinlock_t           fo_translock; /* protect fsd_last_rcvd increment */
 142         struct file         *fo_rcvd_filp;
 143         struct filter_server_data *fo_fsd;
 144         unsigned long       *fo_last_rcvd_slots;
 145         __u64                fo_mount_count;
 146
 147         struct file_operations *fo_fop;
 148         struct inode_operations *fo_iop;
 149         struct address_space_operations *fo_aops;
 150
 151         struct list_head     fo_export_list;
 152         int                  fo_subdir_count;
 153         spinlock_t           fo_grant_lock;       /* protects tot_granted */
 154         obd_size             fo_tot_granted;
 155         obd_size             fo_tot_cached;
 156
 157         struct obd_import   *fo_mdc_imp;
 158         struct obd_uuid      fo_mdc_uuid;
 159         struct lustre_handle fo_mdc_conn;
 160 #if 0
 161         struct ptlrpc_client fo_mdc_client;
 162 #endif
 163         struct file        **fo_last_objid_files;
 164         __u64               *fo_last_objids; //last created object ID for groups
 165
 166         struct semaphore     fo_alloc_lock;
 167
 168         struct obd_histogram     fo_r_pages;
 169         struct obd_histogram     fo_w_pages;
 170         struct obd_histogram     fo_r_discont_pages;
 171         struct obd_histogram     fo_w_discont_pages;
 172         struct obd_histogram     fo_r_discont_blocks;
 173         struct obd_histogram     fo_w_discont_blocks;
 174 };
 175
 176 struct mds_server_data;
 177
 178 #define OSC_MAX_RIF_DEFAULT       4
 179 #define OSC_MAX_RIF_MAX          32
 180 #define OSC_MAX_DIRTY_DEFAULT     4
 181 #define OSC_MAX_DIRTY_MB_MAX    256     /* totally arbitrary */
 182
 183 struct mdc_rpc_lock;
 184 struct client_obd {
 185         struct obd_import       *cl_import;
 186         struct semaphore         cl_sem;
 187         int                      cl_conn_count;
 188         /* max_mds_easize is purely a performance thing so we don't have to
 189          * call obd_size_wiremd() all the time. */
 190         int                      cl_max_mds_easize;
 191         int                      cl_max_mds_cookiesize;
 192         kdev_t                   cl_sandev;
 193
 194         //struct llog_canceld_ctxt *cl_llcd; /* it's included by obd_llog_ctxt */
 195         void                    *cl_llcd_offset;
 196
 197         struct semaphore         cl_dirty_sem;
 198         obd_size                 cl_dirty;  /* all _dirty_ in bytes */
 199         obd_size                 cl_dirty_granted; /* from ost */
 200         obd_size                 cl_dirty_max; /* allowed w/o rpc */
 201         struct list_head         cl_cache_waiters;
 202
 203         struct obd_device       *cl_mgmtcli_obd;
 204
 205         /* this is just to keep existing infinitely caching behaviour between
 206          * clients and OSTs that don't have the grant code in yet.. it can
 207          * be yanked once everything speaks grants */
 208         char                     cl_ost_can_grant;
 209
 210         /* keep track of objects that have lois that contain pages which
 211          * have been queued for async brw.  this lock also protects the
 212          * lists of osc_client_pages that hang off of the loi */
 213         spinlock_t               cl_loi_list_lock;
 214         struct list_head         cl_loi_ready_list;
 215         struct list_head         cl_loi_write_list;
 216         int                      cl_brw_in_flight;
 217         /* just a sum of the loi/lop pending numbers to be exported by /proc */
 218         int                      cl_pending_w_pages;
 219         int                      cl_pending_r_pages;
 220         int                      cl_max_pages_per_rpc;
 221         int                      cl_max_rpcs_in_flight;
 222         struct obd_histogram     cl_read_rpc_hist;
 223         struct obd_histogram     cl_write_rpc_hist;
 224         struct obd_histogram     cl_read_page_hist;
 225         struct obd_histogram     cl_write_page_hist;
 226
 227         struct mdc_rpc_lock     *cl_rpc_lock;
 228         struct mdc_rpc_lock     *cl_setattr_lock;
 229 };
 230
 231 /* Like a client, with some hangers-on.  Keep mc_client_obd first so that we
 232  * can reuse the various client setup/connect functions. */
 233 struct mgmtcli_obd {
 234         struct client_obd        mc_client_obd; /* nested */
 235         struct ptlrpc_thread    *mc_ping_thread;
 236         struct obd_export       *mc_ping_exp; /* XXX single-target */
 237         struct list_head         mc_registered;
 238         void                    *mc_hammer;
 239 };
 240
 241 #define mc_import mc_client_obd.cl_import
 242
 243 struct mds_obd {
 244         struct ptlrpc_service           *mds_service;
 245         struct ptlrpc_service           *mds_setattr_service;
 246         struct ptlrpc_service           *mds_readpage_service;
 247         struct super_block              *mds_sb;
 248         struct vfsmount                 *mds_vfsmnt;
 249         struct dentry                   *mds_fid_de;
 250         int                              mds_max_mdsize;
 251         int                              mds_max_cookiesize;
 252         struct file                     *mds_rcvd_filp;
 253         spinlock_t                       mds_transno_lock;
 254         __u64                            mds_last_transno;
 255         __u64                            mds_mount_count;
 256         __u64                            mds_io_epoch;
 257         struct semaphore                 mds_epoch_sem;
 258         struct ll_fid                    mds_rootfid;
 259         struct mds_server_data          *mds_server_data;
 260         struct dentry                   *mds_pending_dir;
 261         struct dentry                   *mds_logs_dir;
 262         struct dentry                   *mds_objects_dir;
 263         struct llog_handle              *mds_cfg_llh;
 264 //        struct llog_handle              *mds_catalog;
 265         struct obd_device               *mds_osc_obd; /* XXX lov_obd */
 266         struct obd_uuid                  mds_lov_uuid;
 267         char                            *mds_profile;
 268         struct obd_export               *mds_osc_exp; /* XXX lov_exp */
 269         int                              mds_has_lov_desc;
 270         struct lov_desc                  mds_lov_desc;
 271         obd_id                          *mds_lov_objids;
 272         int                              mds_lov_objids_valid;
 273         int                              mds_lov_nextid_set;
 274         struct file                     *mds_lov_objid_filp;
 275         unsigned long                   *mds_client_bitmap;
 276         struct semaphore                 mds_orphan_recovery_sem;
 277
 278         atomic_t                         mds_open_count;
 279 };
 280
 281 struct echo_obd {
 282         struct obdo oa;
 283         spinlock_t eo_lock;
 284         __u64 eo_lastino;
 285         atomic_t eo_getattr;
 286         atomic_t eo_setattr;
 287         atomic_t eo_create;
 288         atomic_t eo_destroy;
 289         atomic_t eo_prep;
 290         atomic_t eo_read;
 291         atomic_t eo_write;
 292 };
 293
 294 /*
 295  * this struct does double-duty acting as either a client or
 296  * server instance .. maybe not wise.
 297  */
 298 struct ptlbd_obd {
 299         /* server's */
 300         struct ptlrpc_service *ptlbd_service;
 301         struct file *filp;
 302         /* client's */
 303         struct ptlrpc_client    bd_client;
 304         struct obd_import       *bd_import;
 305         struct obd_uuid         bd_server_uuid;
 306         struct obd_export       *bd_exp;
 307         int refcount; /* XXX sigh */
 308 };
 309
 310 struct recovd_obd {
 311         spinlock_t            recovd_lock;
 312         struct list_head      recovd_managed_items; /* items managed  */
 313         struct list_head      recovd_troubled_items; /* items in recovery */
 314
 315         wait_queue_head_t     recovd_recovery_waitq;
 316         wait_queue_head_t     recovd_ctl_waitq;
 317         wait_queue_head_t     recovd_waitq;
 318         struct task_struct   *recovd_thread;
 319         __u32                 recovd_state;
 320 };
 321
 322 struct ost_obd {
 323         struct ptlrpc_service *ost_service;
 324         struct ptlrpc_service *ost_create_service;
 325 };
 326
 327 struct echo_client_obd {
 328         struct obd_export   *ec_exp;   /* the local connection to osc/lov */
 329         spinlock_t           ec_lock;
 330         struct list_head     ec_objects;
 331         int                  ec_nstripes;
 332         __u64                ec_unique;
 333 };
 334
 335 struct cache_obd {
 336         struct obd_export *cobd_target_exp;/* local connection to target obd */
 337         struct obd_export *cobd_cache_exp; /* local connection to cache obd */
 338 };
 339
 340 struct lov_tgt_desc {
 341         struct obd_uuid          uuid;
 342         struct obd_export       *ltd_exp;
 343         int                      active; /* is this target up for requests */
 344 };
 345
 346 struct lov_obd {
 347         spinlock_t lov_lock;
 348         struct lov_desc desc;
 349         int bufsize;
 350         int refcount;
 351         int lo_catalog_loaded:1;
 352         struct lov_tgt_desc *tgts;
 353 };
 354
 355 struct niobuf_local {
 356         __u64 offset;
 357         __u32 len;
 358         __u32 flags;
 359         int rc;
 360         struct page *page;
 361         struct dentry *dentry;
 362         unsigned long start;
 363 };
 364
 365
 366 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
 367 #define N_LOCAL_TEMP_PAGE 0x10000000
 368
 369 struct obd_trans_info {
 370         __u64                    oti_transno;
 371         __u64                   *oti_objid;
 372         /* Only used on the server side for tracking acks. */
 373         struct oti_req_ack_lock {
 374                 struct lustre_handle lock;
 375                 __u32                mode;
 376         }                        oti_ack_locks[4];
 377         void                    *oti_handle;
 378         struct llog_cookie       oti_onecookie;
 379         struct llog_cookie      *oti_logcookies;
 380         int                      oti_numcookies;
 381 };
 382
 383 static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies)
 384 {
 385         if (!oti)
 386                 return;
 387
 388         if (num_cookies == 1)
 389                 oti->oti_logcookies = &oti->oti_onecookie;
 390         else
 391                 OBD_ALLOC(oti->oti_logcookies,
 392                           num_cookies * sizeof(oti->oti_onecookie));
 393
 394         oti->oti_numcookies = num_cookies;
 395 }
 396
 397 static inline void oti_free_cookies(struct obd_trans_info *oti)
 398 {
 399         if (!oti || !oti->oti_logcookies)
 400                 return;
 401
 402         if (oti->oti_logcookies == &oti->oti_onecookie)
 403                 LASSERT(oti->oti_numcookies == 1);
 404         else
 405                 OBD_FREE(oti->oti_logcookies,
 406                          oti->oti_numcookies * sizeof(oti->oti_onecookie));
 407         oti->oti_logcookies = NULL;
 408         oti->oti_numcookies = 0;
 409 }
 410
 411 /* llog contexts */
 412 enum llog_ctxt_id {
 413         LLOG_CONFIG_ORIG_CTXT =  0,
 414         LLOG_CONFIG_REPL_CTXT =  1,
 415         LLOG_UNLINK_ORIG_CTXT =  2,
 416         LLOG_UNLINK_REPL_CTXT =  3,
 417         LLOG_SIZE_ORIG_CTXT   =  4,
 418         LLOG_SIZE_REPL_CTXT   =  5,
 419         LLOG_MD_ORIG_CTXT     =  6,
 420         LLOG_MD_REPL_CTXT     =  7,
 421         LLOG_RD1_ORIG_CTXT    =  8,
 422         LLOG_RD1_REPL_CTXT    =  9,
 423         LLOG_TEST_ORIG_CTXT   = 10,
 424         LLOG_TEST_REPL_CTXT   = 11,
 425         LLOG_MAX_CTXTS
 426 };
 427
 428
 429 /* corresponds to one of the obd's */
 430 struct obd_device {
 431         struct obd_type *obd_type;
 432
 433         /* common and UUID name of this device */
 434         char *obd_name;
 435         struct obd_uuid obd_uuid;
 436
 437         int obd_minor;
 438         int obd_attached:1, obd_set_up:1, obd_recovering:1,
 439             obd_abort_recovery:1, obd_replayable:1, obd_no_transno:1,
 440             obd_no_recov:1, obd_stopping:1;
 441         atomic_t obd_refcount;
 442         wait_queue_head_t obd_refcount_waitq;
 443         struct proc_dir_entry *obd_proc_entry;
 444         struct list_head       obd_exports;
 445         int                    obd_num_exports;
 446         struct ldlm_namespace *obd_namespace;
 447         struct ptlrpc_client   obd_ldlm_client; /* XXX OST/MDS only */
 448         /* a spinlock is OK for what we do now, may need a semaphore later */
 449         spinlock_t             obd_dev_lock;
 450         __u64                  obd_last_committed;
 451         struct fsfilt_operations *obd_fsops;
 452         struct llog_ctxt        *obd_llog_ctxt[LLOG_MAX_CTXTS];
 453         struct obd_statfs       obd_osfs;
 454         unsigned long           obd_osfs_age;
 455         struct obd_run_ctxt     obd_ctxt;
 456         struct obd_device       *obd_observer;
 457         struct obd_export       *obd_self_export;
 458
 459         /* XXX encapsulate all this recovery data into one struct */
 460         svc_handler_t                    obd_recovery_handler;
 461         int                              obd_max_recoverable_clients;
 462         int                              obd_connected_clients;
 463         int                              obd_recoverable_clients;
 464         spinlock_t                       obd_processing_task_lock;
 465         pid_t                            obd_processing_task;
 466         __u64                            obd_next_recovery_transno;
 467         int                              obd_replayed_requests;
 468         int                              obd_requests_queued_for_recovery;
 469         wait_queue_head_t                obd_next_transno_waitq;
 470         wait_queue_head_t                obd_commit_waitq;
 471         struct timer_list                obd_recovery_timer;
 472         struct list_head                 obd_recovery_queue;
 473         struct list_head                 obd_delayed_reply_queue;
 474
 475         union {
 476                 struct filter_obd filter;
 477                 struct mds_obd mds;
 478                 struct client_obd cli;
 479                 struct ost_obd ost;
 480                 struct echo_client_obd echo_client;
 481                 struct echo_obd echo;
 482                 struct recovd_obd recovd;
 483                 struct lov_obd lov;
 484                 struct cache_obd cobd;
 485                 struct ptlbd_obd ptlbd;
 486                 struct mgmtcli_obd mgmtcli;
 487         } u;
 488        /* Fields used by LProcFS */
 489         unsigned int           obd_cntr_base;
 490         struct lprocfs_stats  *obd_stats;
 491         struct proc_dir_entry *obd_svc_procroot;
 492         struct lprocfs_stats  *obd_svc_stats;
 493 };
 494
 495 #define OBD_OPT_FORCE           0x0001
 496 #define OBD_OPT_FAILOVER        0x0002
 497
 498 #define OBD_LLOG_FL_SENDNOW     0x0001
 499
 500 struct obd_ops {
 501         struct module *o_owner;
 502         int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len,
 503                            void *karg, void *uarg);
 504         int (*o_get_info)(struct obd_export *, __u32 keylen, void *key,
 505                           __u32 *vallen, void *val);
 506         int (*o_set_info)(struct obd_export *, __u32 keylen, void *key,
 507                           __u32 vallen, void *val);
 508         int (*o_attach)(struct obd_device *dev, obd_count len, void *data);
 509         int (*o_detach)(struct obd_device *dev);
 510         int (*o_setup) (struct obd_device *dev, obd_count len, void *data);
 511         int (*o_postsetup) (struct obd_device *dev);
 512         int (*o_precleanup)(struct obd_device *dev, int flags);
 513         int (*o_cleanup)(struct obd_device *dev, int flags);
 514         int (*o_postrecov)(struct obd_device *dev);
 515         int (*o_connect)(struct lustre_handle *conn, struct obd_device *src,
 516                          struct obd_uuid *cluuid);
 517         int (*o_disconnect)(struct obd_export *exp, int flags);
 518
 519         int (*o_statfs)(struct obd_device *obd, struct obd_statfs *osfs,
 520                         unsigned long max_age);
 521         int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt,
 522                         struct lov_stripe_md *mem_src);
 523         int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt,
 524                           struct lov_mds_md *disk_src, int disk_len);
 525         int (*o_preallocate)(struct lustre_handle *, obd_count *req,
 526                              obd_id *ids);
 527         int (*o_create)(struct obd_export *exp,  struct obdo *oa,
 528                         struct lov_stripe_md **ea, struct obd_trans_info *oti);
 529         int (*o_destroy)(struct obd_export *exp, struct obdo *oa,
 530                          struct lov_stripe_md *ea, struct obd_trans_info *oti);
 531         int (*o_setattr)(struct obd_export *exp, struct obdo *oa,
 532                          struct lov_stripe_md *ea, struct obd_trans_info *oti);
 533         int (*o_getattr)(struct obd_export *exp, struct obdo *oa,
 534                          struct lov_stripe_md *ea);
 535         int (*o_getattr_async)(struct obd_export *exp, struct obdo *oa,
 536                                struct lov_stripe_md *ea,
 537                                struct ptlrpc_request_set *set);
 538         int (*o_brw)(int rw, struct obd_export *exp, struct obdo *oa,
 539                      struct lov_stripe_md *ea, obd_count oa_bufs,
 540                      struct brw_page *pgarr, struct obd_trans_info *oti);
 541         int (*o_brw_async)(int rw, struct obd_export *exp, struct obdo *oa,
 542                            struct lov_stripe_md *ea, obd_count oa_bufs,
 543                            struct brw_page *pgarr, struct ptlrpc_request_set *,
 544                            struct obd_trans_info *oti);
 545         int (*o_prep_async_page)(struct obd_export *exp,
 546                                  struct lov_stripe_md *lsm,
 547                                  struct lov_oinfo *loi,
 548                                  struct page *page, obd_off offset,
 549                                  struct obd_async_page_ops *ops, void *data,
 550                                  void **res);
 551         int (*o_queue_async_io)(struct obd_export *exp,
 552                                 struct lov_stripe_md *lsm,
 553                                 struct lov_oinfo *loi, void *cookie,
 554                                 int cmd, obd_off off, int count,
 555                                 obd_flag brw_flags, obd_flag async_flags);
 556         int (*o_queue_sync_io)(struct obd_export *exp,
 557                                struct lov_stripe_md *lsm,
 558                                struct lov_oinfo *loi,
 559                                struct obd_sync_io_container *osic,
 560                                void *cookie, int cmd, obd_off off, int count,
 561                                obd_flag brw_flags);
 562         int (*o_trigger_sync_io)(struct obd_export *exp,
 563                                  struct lov_stripe_md *lsm,
 564                                  struct lov_oinfo *loi,
 565                                  struct obd_sync_io_container *osic);
 566         int (*o_set_async_flags)(struct obd_export *exp,
 567                                 struct lov_stripe_md *lsm,
 568                                 struct lov_oinfo *loi, void *cookie,
 569                                 obd_flag async_flags);
 570         int (*o_teardown_async_page)(struct obd_export *exp,
 571                                      struct lov_stripe_md *lsm,
 572                                      struct lov_oinfo *loi, void *cookie);
 573         int (*o_punch)(struct obd_export *exp, struct obdo *oa,
 574                        struct lov_stripe_md *ea, obd_size start,
 575                        obd_size end, struct obd_trans_info *oti);
 576         int (*o_sync)(struct obd_export *exp, struct obdo *oa,
 577                       struct lov_stripe_md *ea, obd_size start, obd_size end);
 578         int (*o_migrate)(struct lustre_handle *conn, struct lov_stripe_md *dst,
 579                          struct lov_stripe_md *src, obd_size start,
 580                          obd_size end, struct obd_trans_info *oti);
 581         int (*o_copy)(struct lustre_handle *dstconn, struct lov_stripe_md *dst,
 582                       struct lustre_handle *srconn, struct lov_stripe_md *src,
 583                       obd_size start, obd_size end, struct obd_trans_info *);
 584         int (*o_iterate)(struct lustre_handle *conn,
 585                          int (*)(obd_id, obd_gr, void *),
 586                          obd_id *startid, obd_gr group, void *data);
 587         int (*o_preprw)(int cmd, struct obd_export *exp, struct obdo *oa,
 588                         int objcount, struct obd_ioobj *obj,
 589                         int niocount, struct niobuf_remote *remote,
 590                         struct niobuf_local *local, struct obd_trans_info *oti);
 591         int (*o_commitrw)(int cmd, struct obd_export *exp, struct obdo *oa,
 592                           int objcount, struct obd_ioobj *obj,
 593                           int niocount, struct niobuf_local *local,
 594                           struct obd_trans_info *oti);
 595         int (*o_enqueue)(struct obd_export *exp, struct lov_stripe_md *md,
 596                          struct lustre_handle *parent_lock,
 597                          __u32 type, void *cookie, int cookielen, __u32 mode,
 598                          int *flags, void *cb, void *data,
 599                          struct lustre_handle *lockh);
 600         int (*o_match)(struct obd_export *exp, struct lov_stripe_md *md,
 601                          __u32 type, void *cookie, int cookielen, __u32 mode,
 602                          int *flags, void *data, struct lustre_handle *lockh);
 603         int (*o_change_cbdata)(struct obd_export *exp,
 604                                struct lov_stripe_md *lsm, ldlm_iterator_t it,
 605                                void *data);
 606         int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md,
 607                         __u32 mode, struct lustre_handle *);
 608         int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *,
 609                                int flags, void *opaque);
 610         int (*o_san_preprw)(int cmd, struct obd_export *exp,
 611                             struct obdo *oa, int objcount,
 612                             struct obd_ioobj *obj, int niocount,
 613                             struct niobuf_remote *remote);
 614         int (*o_init_export)(struct obd_export *exp);
 615         int (*o_destroy_export)(struct obd_export *exp);
 616
 617         /* llog related obd_methods */
 618         int (*o_llog_init)(struct obd_device *obd, struct obd_device *disk_obd,
 619                            int count, struct llog_logid *logid);
 620         int (*o_llog_finish)(struct obd_device *obd, int count);
 621
 622         /* only until proper file size mechanics arrive */
 623         int (*o_lock_contains)(struct obd_export *exp,
 624                                struct lov_stripe_md *lsm,
 625                                struct ldlm_lock *lock, obd_off offset);
 626
 627         /* metadata-only methods */
 628         int (*o_pin)(struct obd_export *, obd_id ino, __u32 gen, int type,
 629                      struct obd_client_handle *, int flag);
 630         int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int);
 631
 632         int (*o_invalidate_import)(struct obd_device *, struct obd_import *);
 633
 634         int (*o_notify)(struct obd_device *obd, struct obd_device *watched,
 635                         int active);
 636         /*
 637          * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
 638          * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
 639          * Also, add a wrapper function in include/linux/obd_class.h.
 640          */
 641
 642 };
 643
 644
 645 static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno,
 646                                          int error)
 647 {
 648         if (error) {
 649                 CERROR("%s: transno "LPD64" commit error: %d\n",
 650                        obd->obd_name, transno, error);
 651                 return;
 652         }
 653         CDEBUG(D_HA, "%s: transno "LPD64" committed\n",
 654                obd->obd_name, transno);
 655         if (transno > obd->obd_last_committed) {
 656                 obd->obd_last_committed = transno;
 657                 wake_up(&obd->obd_commit_waitq);
 658         }
 659 }
 660
 661 #endif /* __OBD_H */