fs/gfs2/incore.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License v.2.
   8  */
   9
  10 #ifndef __INCORE_DOT_H__
  11 #define __INCORE_DOT_H__
  12
  13 #define DIO_FORCE       0x00000001
  14 #define DIO_CLEAN       0x00000002
  15 #define DIO_DIRTY       0x00000004
  16 #define DIO_START       0x00000008
  17 #define DIO_WAIT        0x00000010
  18 #define DIO_METADATA    0x00000020
  19 #define DIO_DATA        0x00000040
  20 #define DIO_RELEASE     0x00000080
  21 #define DIO_ALL         0x00000100
  22
  23 struct gfs2_log_operations;
  24 struct gfs2_log_element;
  25 struct gfs2_bitmap;
  26 struct gfs2_rgrpd;
  27 struct gfs2_bufdata;
  28 struct gfs2_databuf;
  29 struct gfs2_glock_operations;
  30 struct gfs2_holder;
  31 struct gfs2_glock;
  32 struct gfs2_alloc;
  33 struct gfs2_inode;
  34 struct gfs2_file;
  35 struct gfs2_revoke;
  36 struct gfs2_revoke_replay;
  37 struct gfs2_unlinked;
  38 struct gfs2_quota_data;
  39 struct gfs2_log_buf;
  40 struct gfs2_trans;
  41 struct gfs2_ail;
  42 struct gfs2_jdesc;
  43 struct gfs2_args;
  44 struct gfs2_tune;
  45 struct gfs2_gl_hash_bucket;
  46 struct gfs2_sbd;
  47
  48 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
  49
  50 /*
  51  * Structure of operations that are associated with each
  52  * type of element in the log.
  53  */
  54
  55 struct gfs2_log_operations {
  56         void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
  57         void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
  58         void (*lo_before_commit) (struct gfs2_sbd *sdp);
  59         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
  60         void (*lo_before_scan) (struct gfs2_jdesc *jd,
  61                                 struct gfs2_log_header *head, int pass);
  62         int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
  63                                  struct gfs2_log_descriptor *ld, __be64 *ptr,
  64                                  int pass);
  65         void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
  66         char *lo_name;
  67 };
  68
  69 struct gfs2_log_element {
  70         struct list_head le_list;
  71         struct gfs2_log_operations *le_ops;
  72 };
  73
  74 struct gfs2_bitmap {
  75         struct buffer_head *bi_bh;
  76         char *bi_clone;
  77         uint32_t bi_offset;
  78         uint32_t bi_start;
  79         uint32_t bi_len;
  80 };
  81
  82 struct gfs2_rgrpd {
  83         struct list_head rd_list;       /* Link with superblock */
  84         struct list_head rd_list_mru;
  85         struct list_head rd_recent;     /* Recently used rgrps */
  86         struct gfs2_glock *rd_gl;       /* Glock for this rgrp */
  87         struct gfs2_rindex rd_ri;
  88         struct gfs2_rgrp rd_rg;
  89         uint64_t rd_rg_vn;
  90         struct gfs2_bitmap *rd_bits;
  91         unsigned int rd_bh_count;
  92         struct semaphore rd_mutex;
  93         uint32_t rd_free_clone;
  94         struct gfs2_log_element rd_le;
  95         uint32_t rd_last_alloc_data;
  96         uint32_t rd_last_alloc_meta;
  97         struct gfs2_sbd *rd_sbd;
  98 };
  99
 100 enum gfs2_state_bits {
 101         BH_Pinned = BH_PrivateStart,
 102 };
 103
 104 BUFFER_FNS(Pinned, pinned)
 105 TAS_BUFFER_FNS(Pinned, pinned)
 106
 107 struct gfs2_bufdata {
 108         struct buffer_head *bd_bh;
 109         struct gfs2_glock *bd_gl;
 110
 111         struct list_head bd_list_tr;
 112         struct gfs2_log_element bd_le;
 113
 114         struct gfs2_ail *bd_ail;
 115         struct list_head bd_ail_st_list;
 116         struct list_head bd_ail_gl_list;
 117 };
 118
 119 struct gfs2_databuf {
 120         struct gfs2_log_element db_le;
 121         struct buffer_head *db_bh;
 122 };
 123
 124 struct gfs2_glock_operations {
 125         void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
 126                              int flags);
 127         void (*go_xmote_bh) (struct gfs2_glock * gl);
 128         void (*go_drop_th) (struct gfs2_glock * gl);
 129         void (*go_drop_bh) (struct gfs2_glock * gl);
 130         void (*go_sync) (struct gfs2_glock * gl, int flags);
 131         void (*go_inval) (struct gfs2_glock * gl, int flags);
 132         int (*go_demote_ok) (struct gfs2_glock * gl);
 133         int (*go_lock) (struct gfs2_holder * gh);
 134         void (*go_unlock) (struct gfs2_holder * gh);
 135         void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
 136         void (*go_greedy) (struct gfs2_glock * gl);
 137         int go_type;
 138 };
 139
 140 enum {
 141         /* Actions */
 142         HIF_MUTEX               = 0,
 143         HIF_PROMOTE             = 1,
 144         HIF_DEMOTE              = 2,
 145         HIF_GREEDY              = 3,
 146
 147         /* States */
 148         HIF_ALLOCED             = 4,
 149         HIF_DEALLOC             = 5,
 150         HIF_HOLDER              = 6,
 151         HIF_FIRST               = 7,
 152         HIF_RECURSE             = 8,
 153         HIF_ABORTED             = 9,
 154 };
 155
 156 struct gfs2_holder {
 157         struct list_head gh_list;
 158
 159         struct gfs2_glock *gh_gl;
 160         struct task_struct *gh_owner;
 161         unsigned int gh_state;
 162         int gh_flags;
 163
 164         int gh_error;
 165         unsigned long gh_iflags;
 166         struct completion gh_wait;
 167 };
 168
 169 enum {
 170         GLF_PLUG                = 0,
 171         GLF_LOCK                = 1,
 172         GLF_STICKY              = 2,
 173         GLF_PREFETCH            = 3,
 174         GLF_SYNC                = 4,
 175         GLF_DIRTY               = 5,
 176         GLF_SKIP_WAITERS2       = 6,
 177         GLF_GREEDY              = 7,
 178 };
 179
 180 struct gfs2_glock {
 181         struct list_head gl_list;
 182         unsigned long gl_flags;         /* GLF_... */
 183         struct lm_lockname gl_name;
 184         struct kref gl_ref;
 185
 186         spinlock_t gl_spin;
 187
 188         unsigned int gl_state;
 189         struct list_head gl_holders;
 190         struct list_head gl_waiters1;   /* HIF_MUTEX */
 191         struct list_head gl_waiters2;   /* HIF_DEMOTE, HIF_GREEDY */
 192         struct list_head gl_waiters3;   /* HIF_PROMOTE */
 193
 194         struct gfs2_glock_operations *gl_ops;
 195
 196         struct gfs2_holder *gl_req_gh;
 197         gfs2_glop_bh_t gl_req_bh;
 198
 199         lm_lock_t *gl_lock;
 200         char *gl_lvb;
 201         atomic_t gl_lvb_count;
 202
 203         uint64_t gl_vn;
 204         unsigned long gl_stamp;
 205         void *gl_object;
 206
 207         struct gfs2_gl_hash_bucket *gl_bucket;
 208         struct list_head gl_reclaim;
 209
 210         struct gfs2_sbd *gl_sbd;
 211
 212         struct inode *gl_aspace;
 213         struct gfs2_log_element gl_le;
 214         struct list_head gl_ail_list;
 215         atomic_t gl_ail_count;
 216 };
 217
 218 struct gfs2_alloc {
 219         /* Quota stuff */
 220
 221         unsigned int al_qd_num;
 222         struct gfs2_quota_data *al_qd[4];
 223         struct gfs2_holder al_qd_ghs[4];
 224
 225         /* Filled in by the caller to gfs2_inplace_reserve() */
 226
 227         uint32_t al_requested;
 228
 229         /* Filled in by gfs2_inplace_reserve() */
 230
 231         char *al_file;
 232         unsigned int al_line;
 233         struct gfs2_holder al_ri_gh;
 234         struct gfs2_holder al_rgd_gh;
 235         struct gfs2_rgrpd *al_rgd;
 236
 237         /* Filled in by gfs2_alloc_*() */
 238
 239         uint32_t al_alloced;
 240 };
 241
 242 enum {
 243         GIF_MIN_INIT            = 0,
 244         GIF_QD_LOCKED           = 1,
 245         GIF_PAGED               = 2,
 246         GIF_SW_PAGED            = 3,
 247 };
 248
 249 struct gfs2_inode {
 250         struct gfs2_inum i_num;
 251
 252         atomic_t i_count;
 253         unsigned long i_flags;          /* GIF_... */
 254
 255         uint64_t i_vn;
 256         struct gfs2_dinode i_di;
 257
 258         struct gfs2_glock *i_gl;
 259         struct gfs2_sbd *i_sbd;
 260         struct inode *i_vnode;
 261
 262         struct gfs2_holder i_iopen_gh;
 263
 264         struct gfs2_alloc i_alloc;
 265         uint64_t i_last_rg_alloc;
 266
 267         spinlock_t i_spin;
 268         struct rw_semaphore i_rw_mutex;
 269
 270         unsigned int i_greedy;
 271         unsigned long i_last_pfault;
 272
 273         struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
 274 };
 275
 276 enum {
 277         GFF_DID_DIRECT_ALLOC    = 0,
 278 };
 279
 280 struct gfs2_file {
 281         unsigned long f_flags;          /* GFF_... */
 282
 283         struct semaphore f_fl_mutex;
 284         struct gfs2_holder f_fl_gh;
 285
 286         struct gfs2_inode *f_inode;
 287         struct file *f_vfile;
 288 };
 289
 290 struct gfs2_revoke {
 291         struct gfs2_log_element rv_le;
 292         uint64_t rv_blkno;
 293 };
 294
 295 struct gfs2_revoke_replay {
 296         struct list_head rr_list;
 297         uint64_t rr_blkno;
 298         unsigned int rr_where;
 299 };
 300
 301 enum {
 302         ULF_LOCKED              = 0,
 303 };
 304
 305 struct gfs2_unlinked {
 306         struct list_head ul_list;
 307         unsigned int ul_count;
 308         struct gfs2_unlinked_tag ul_ut;
 309         unsigned long ul_flags;         /* ULF_... */
 310         unsigned int ul_slot;
 311 };
 312
 313 enum {
 314         QDF_USER                = 0,
 315         QDF_CHANGE              = 1,
 316         QDF_LOCKED              = 2,
 317 };
 318
 319 struct gfs2_quota_data {
 320         struct list_head qd_list;
 321         unsigned int qd_count;
 322
 323         uint32_t qd_id;
 324         unsigned long qd_flags;         /* QDF_... */
 325
 326         int64_t qd_change;
 327         int64_t qd_change_sync;
 328
 329         unsigned int qd_slot;
 330         unsigned int qd_slot_count;
 331
 332         struct buffer_head *qd_bh;
 333         struct gfs2_quota_change *qd_bh_qc;
 334         unsigned int qd_bh_count;
 335
 336         struct gfs2_glock *qd_gl;
 337         struct gfs2_quota_lvb qd_qb;
 338
 339         uint64_t qd_sync_gen;
 340         unsigned long qd_last_warn;
 341         unsigned long qd_last_touched;
 342 };
 343
 344 struct gfs2_log_buf {
 345         struct list_head lb_list;
 346         struct buffer_head *lb_bh;
 347         struct buffer_head *lb_real;
 348 };
 349
 350 struct gfs2_trans {
 351         char *tr_file;
 352         unsigned int tr_line;
 353
 354         unsigned int tr_blocks;
 355         unsigned int tr_revokes;
 356         unsigned int tr_reserved;
 357
 358         struct gfs2_holder *tr_t_gh;
 359
 360         int tr_touched;
 361
 362         unsigned int tr_num_buf;
 363         unsigned int tr_num_buf_new;
 364         unsigned int tr_num_buf_rm;
 365         struct list_head tr_list_buf;
 366
 367         unsigned int tr_num_revoke;
 368         unsigned int tr_num_revoke_rm;
 369 };
 370
 371 struct gfs2_ail {
 372         struct list_head ai_list;
 373
 374         unsigned int ai_first;
 375         struct list_head ai_ail1_list;
 376         struct list_head ai_ail2_list;
 377
 378         uint64_t ai_sync_gen;
 379 };
 380
 381 struct gfs2_jdesc {
 382         struct list_head jd_list;
 383
 384         struct gfs2_inode *jd_inode;
 385         unsigned int jd_jid;
 386         int jd_dirty;
 387
 388         unsigned int jd_blocks;
 389 };
 390
 391 #define GFS2_GLOCKD_DEFAULT     1
 392 #define GFS2_GLOCKD_MAX         16
 393
 394 #define GFS2_QUOTA_DEFAULT      GFS2_QUOTA_OFF
 395 #define GFS2_QUOTA_OFF          0
 396 #define GFS2_QUOTA_ACCOUNT      1
 397 #define GFS2_QUOTA_ON           2
 398
 399 #define GFS2_DATA_DEFAULT       GFS2_DATA_ORDERED
 400 #define GFS2_DATA_WRITEBACK     1
 401 #define GFS2_DATA_ORDERED       2
 402
 403 struct gfs2_args {
 404         char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
 405         char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
 406         char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
 407         int ar_spectator; /* Don't get a journal because we're always RO */
 408         int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
 409         int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
 410         int ar_localcaching; /* Local-style caching (dangerous on multihost) */
 411         int ar_debug; /* Oops on errors instead of trying to be graceful */
 412         int ar_upgrade; /* Upgrade ondisk/multihost format */
 413         unsigned int ar_num_glockd; /* Number of glockd threads */
 414         int ar_posix_acl; /* Enable posix acls */
 415         int ar_quota; /* off/account/on */
 416         int ar_suiddir; /* suiddir support */
 417         int ar_data; /* ordered/writeback */
 418 };
 419
 420 struct gfs2_tune {
 421         spinlock_t gt_spin;
 422
 423         unsigned int gt_ilimit;
 424         unsigned int gt_ilimit_tries;
 425         unsigned int gt_ilimit_min;
 426         unsigned int gt_demote_secs; /* Cache retention for unheld glock */
 427         unsigned int gt_incore_log_blocks;
 428         unsigned int gt_log_flush_secs;
 429         unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
 430
 431         unsigned int gt_scand_secs;
 432         unsigned int gt_recoverd_secs;
 433         unsigned int gt_logd_secs;
 434         unsigned int gt_quotad_secs;
 435         unsigned int gt_inoded_secs;
 436
 437         unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
 438         unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
 439         unsigned int gt_quota_scale_num; /* Numerator */
 440         unsigned int gt_quota_scale_den; /* Denominator */
 441         unsigned int gt_quota_cache_secs;
 442         unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
 443         unsigned int gt_atime_quantum; /* Min secs between atime updates */
 444         unsigned int gt_new_files_jdata;
 445         unsigned int gt_new_files_directio;
 446         unsigned int gt_max_atomic_write; /* Split big writes into this size */
 447         unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
 448         unsigned int gt_lockdump_size;
 449         unsigned int gt_stall_secs; /* Detects trouble! */
 450         unsigned int gt_complain_secs;
 451         unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
 452         unsigned int gt_entries_per_readdir;
 453         unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
 454         unsigned int gt_greedy_default;
 455         unsigned int gt_greedy_quantum;
 456         unsigned int gt_greedy_max;
 457         unsigned int gt_statfs_quantum;
 458         unsigned int gt_statfs_slow;
 459 };
 460
 461 struct gfs2_gl_hash_bucket {
 462         rwlock_t hb_lock;
 463         struct list_head hb_list;
 464 };
 465
 466 enum {
 467         SDF_JOURNAL_CHECKED     = 0,
 468         SDF_JOURNAL_LIVE        = 1,
 469         SDF_SHUTDOWN            = 2,
 470         SDF_NOATIME             = 3,
 471 };
 472
 473 #define GFS2_GL_HASH_SHIFT      13
 474 #define GFS2_GL_HASH_SIZE       (1 << GFS2_GL_HASH_SHIFT)
 475 #define GFS2_GL_HASH_MASK       (GFS2_GL_HASH_SIZE - 1)
 476 #define GFS2_FSNAME_LEN         256
 477
 478 struct gfs2_sbd {
 479         struct super_block *sd_vfs;
 480         struct kobject sd_kobj;
 481         unsigned long sd_flags; /* SDF_... */
 482         struct gfs2_sb sd_sb;
 483
 484         /* Constants computed on mount */
 485
 486         uint32_t sd_fsb2bb;
 487         uint32_t sd_fsb2bb_shift;
 488         uint32_t sd_diptrs;     /* Number of pointers in a dinode */
 489         uint32_t sd_inptrs;     /* Number of pointers in a indirect block */
 490         uint32_t sd_jbsize;     /* Size of a journaled data block */
 491         uint32_t sd_hash_bsize; /* sizeof(exhash block) */
 492         uint32_t sd_hash_bsize_shift;
 493         uint32_t sd_hash_ptrs;  /* Number of pointers in a hash block */
 494         uint32_t sd_ut_per_block;
 495         uint32_t sd_qc_per_block;
 496         uint32_t sd_max_dirres; /* Max blocks needed to add a directory entry */
 497         uint32_t sd_max_height; /* Max height of a file's metadata tree */
 498         uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
 499         uint32_t sd_max_jheight; /* Max height of journaled file's meta tree */
 500         uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
 501
 502         struct gfs2_args sd_args;       /* Mount arguments */
 503         struct gfs2_tune sd_tune;       /* Filesystem tuning structure */
 504
 505         /* Lock Stuff */
 506
 507         struct lm_lockstruct sd_lockstruct;
 508         struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
 509         struct list_head sd_reclaim_list;
 510         spinlock_t sd_reclaim_lock;
 511         wait_queue_head_t sd_reclaim_wq;
 512         atomic_t sd_reclaim_count;
 513         struct gfs2_holder sd_live_gh;
 514         struct gfs2_glock *sd_rename_gl;
 515         struct gfs2_glock *sd_trans_gl;
 516         struct semaphore sd_invalidate_inodes_mutex;
 517
 518         /* Inode Stuff */
 519
 520         struct gfs2_inode *sd_master_dir;
 521         struct gfs2_inode *sd_jindex;
 522         struct gfs2_inode *sd_inum_inode;
 523         struct gfs2_inode *sd_statfs_inode;
 524         struct gfs2_inode *sd_ir_inode;
 525         struct gfs2_inode *sd_sc_inode;
 526         struct gfs2_inode *sd_ut_inode;
 527         struct gfs2_inode *sd_qc_inode;
 528         struct gfs2_inode *sd_rindex;
 529         struct gfs2_inode *sd_quota_inode;
 530         struct gfs2_inode *sd_root_dir;
 531
 532         /* Inum stuff */
 533
 534         struct semaphore sd_inum_mutex;
 535
 536         /* StatFS stuff */
 537
 538         spinlock_t sd_statfs_spin;
 539         struct semaphore sd_statfs_mutex;
 540         struct gfs2_statfs_change sd_statfs_master;
 541         struct gfs2_statfs_change sd_statfs_local;
 542         unsigned long sd_statfs_sync_time;
 543
 544         /* Resource group stuff */
 545
 546         uint64_t sd_rindex_vn;
 547         spinlock_t sd_rindex_spin;
 548         struct semaphore sd_rindex_mutex;
 549         struct list_head sd_rindex_list;
 550         struct list_head sd_rindex_mru_list;
 551         struct list_head sd_rindex_recent_list;
 552         struct gfs2_rgrpd *sd_rindex_forward;
 553         unsigned int sd_rgrps;
 554
 555         /* Journal index stuff */
 556
 557         struct list_head sd_jindex_list;
 558         spinlock_t sd_jindex_spin;
 559         struct semaphore sd_jindex_mutex;
 560         unsigned int sd_journals;
 561         unsigned long sd_jindex_refresh_time;
 562
 563         struct gfs2_jdesc *sd_jdesc;
 564         struct gfs2_holder sd_journal_gh;
 565         struct gfs2_holder sd_jinode_gh;
 566
 567         struct gfs2_holder sd_ir_gh;
 568         struct gfs2_holder sd_sc_gh;
 569         struct gfs2_holder sd_ut_gh;
 570         struct gfs2_holder sd_qc_gh;
 571
 572         /* Daemon stuff */
 573
 574         struct task_struct *sd_scand_process;
 575         struct task_struct *sd_recoverd_process;
 576         struct task_struct *sd_logd_process;
 577         struct task_struct *sd_quotad_process;
 578         struct task_struct *sd_inoded_process;
 579         struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
 580         unsigned int sd_glockd_num;
 581
 582         /* Unlinked inode stuff */
 583
 584         struct list_head sd_unlinked_list;
 585         atomic_t sd_unlinked_count;
 586         spinlock_t sd_unlinked_spin;
 587         struct semaphore sd_unlinked_mutex;
 588
 589         unsigned int sd_unlinked_slots;
 590         unsigned int sd_unlinked_chunks;
 591         unsigned char **sd_unlinked_bitmap;
 592
 593         /* Quota stuff */
 594
 595         struct list_head sd_quota_list;
 596         atomic_t sd_quota_count;
 597         spinlock_t sd_quota_spin;
 598         struct semaphore sd_quota_mutex;
 599
 600         unsigned int sd_quota_slots;
 601         unsigned int sd_quota_chunks;
 602         unsigned char **sd_quota_bitmap;
 603
 604         uint64_t sd_quota_sync_gen;
 605         unsigned long sd_quota_sync_time;
 606
 607         /* Log stuff */
 608
 609         spinlock_t sd_log_lock;
 610         atomic_t sd_log_trans_count;
 611         wait_queue_head_t sd_log_trans_wq;
 612         atomic_t sd_log_flush_count;
 613         wait_queue_head_t sd_log_flush_wq;
 614
 615         unsigned int sd_log_blks_reserved;
 616         unsigned int sd_log_commited_buf;
 617         unsigned int sd_log_commited_revoke;
 618
 619         unsigned int sd_log_num_gl;
 620         unsigned int sd_log_num_buf;
 621         unsigned int sd_log_num_revoke;
 622         unsigned int sd_log_num_rg;
 623         unsigned int sd_log_num_databuf;
 624         struct list_head sd_log_le_gl;
 625         struct list_head sd_log_le_buf;
 626         struct list_head sd_log_le_revoke;
 627         struct list_head sd_log_le_rg;
 628         struct list_head sd_log_le_databuf;
 629
 630         unsigned int sd_log_blks_free;
 631         struct list_head sd_log_blks_list;
 632         wait_queue_head_t sd_log_blks_wait;
 633
 634         uint64_t sd_log_sequence;
 635         unsigned int sd_log_head;
 636         unsigned int sd_log_tail;
 637         uint64_t sd_log_wraps;
 638         int sd_log_idle;
 639
 640         unsigned long sd_log_flush_time;
 641         struct semaphore sd_log_flush_lock;
 642         struct list_head sd_log_flush_list;
 643
 644         unsigned int sd_log_flush_head;
 645         uint64_t sd_log_flush_wrapped;
 646
 647         struct list_head sd_ail1_list;
 648         struct list_head sd_ail2_list;
 649         uint64_t sd_ail_sync_gen;
 650
 651         /* Replay stuff */
 652
 653         struct list_head sd_revoke_list;
 654         unsigned int sd_replay_tail;
 655
 656         unsigned int sd_found_blocks;
 657         unsigned int sd_found_revokes;
 658         unsigned int sd_replayed_blocks;
 659
 660         /* For quiescing the filesystem */
 661
 662         struct gfs2_holder sd_freeze_gh;
 663         struct semaphore sd_freeze_lock;
 664         unsigned int sd_freeze_count;
 665
 666         /* Counters */
 667
 668         atomic_t sd_glock_count;
 669         atomic_t sd_glock_held_count;
 670         atomic_t sd_inode_count;
 671         atomic_t sd_bufdata_count;
 672
 673         atomic_t sd_fh2dentry_misses;
 674         atomic_t sd_reclaimed;
 675         atomic_t sd_log_flush_incore;
 676         atomic_t sd_log_flush_ondisk;
 677
 678         atomic_t sd_glock_nq_calls;
 679         atomic_t sd_glock_dq_calls;
 680         atomic_t sd_glock_prefetch_calls;
 681         atomic_t sd_lm_lock_calls;
 682         atomic_t sd_lm_unlock_calls;
 683         atomic_t sd_lm_callbacks;
 684
 685         atomic_t sd_ops_address;
 686         atomic_t sd_ops_dentry;
 687         atomic_t sd_ops_export;
 688         atomic_t sd_ops_file;
 689         atomic_t sd_ops_inode;
 690         atomic_t sd_ops_super;
 691         atomic_t sd_ops_vm;
 692
 693         char sd_fsname[GFS2_FSNAME_LEN];
 694         char sd_table_name[GFS2_FSNAME_LEN];
 695         char sd_proto_name[GFS2_FSNAME_LEN];
 696
 697         /* Debugging crud */
 698
 699         unsigned long sd_last_warning;
 700 };
 701
 702 #endif /* __INCORE_DOT_H__ */
 703