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