fs/gfs2/incore.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 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 version 2.
   8  */
   9
  10 #ifndef __INCORE_DOT_H__
  11 #define __INCORE_DOT_H__
  12
  13 #include <linux/fs.h>
  14
  15 #define DIO_WAIT        0x00000010
  16 #define DIO_METADATA    0x00000020
  17 #define DIO_ALL         0x00000100
  18
  19 struct gfs2_log_operations;
  20 struct gfs2_log_element;
  21 struct gfs2_holder;
  22 struct gfs2_glock;
  23 struct gfs2_quota_data;
  24 struct gfs2_trans;
  25 struct gfs2_ail;
  26 struct gfs2_jdesc;
  27 struct gfs2_sbd;
  28
  29 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
  30
  31 struct gfs2_log_header_host {
  32         u64 lh_sequence;        /* Sequence number of this transaction */
  33         u32 lh_flags;           /* GFS2_LOG_HEAD_... */
  34         u32 lh_tail;            /* Block number of log tail */
  35         u32 lh_blkno;
  36         u32 lh_hash;
  37 };
  38
  39 /*
  40  * Structure of operations that are associated with each
  41  * type of element in the log.
  42  */
  43
  44 struct gfs2_log_operations {
  45         void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
  46         void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
  47         void (*lo_before_commit) (struct gfs2_sbd *sdp);
  48         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
  49         void (*lo_before_scan) (struct gfs2_jdesc *jd,
  50                                 struct gfs2_log_header_host *head, int pass);
  51         int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
  52                                  struct gfs2_log_descriptor *ld, __be64 *ptr,
  53                                  int pass);
  54         void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
  55         const char *lo_name;
  56 };
  57
  58 struct gfs2_log_element {
  59         struct list_head le_list;
  60         const struct gfs2_log_operations *le_ops;
  61 };
  62
  63 struct gfs2_bitmap {
  64         struct buffer_head *bi_bh;
  65         char *bi_clone;
  66         u32 bi_offset;
  67         u32 bi_start;
  68         u32 bi_len;
  69 };
  70
  71 struct gfs2_rgrp_host {
  72         u32 rg_flags;
  73         u32 rg_free;
  74         u32 rg_dinodes;
  75         u64 rg_igeneration;
  76 };
  77
  78 struct gfs2_rgrpd {
  79         struct list_head rd_list;       /* Link with superblock */
  80         struct list_head rd_list_mru;
  81         struct list_head rd_recent;     /* Recently used rgrps */
  82         struct gfs2_glock *rd_gl;       /* Glock for this rgrp */
  83         u64 rd_addr;                    /* grp block disk address */
  84         u64 rd_data0;                   /* first data location */
  85         u32 rd_length;                  /* length of rgrp header in fs blocks */
  86         u32 rd_data;                    /* num of data blocks in rgrp */
  87         u32 rd_bitbytes;                /* number of bytes in data bitmaps */
  88         struct gfs2_rgrp_host rd_rg;
  89         u64 rd_rg_vn;
  90         struct gfs2_bitmap *rd_bits;
  91         unsigned int rd_bh_count;
  92         struct mutex rd_mutex;
  93         u32 rd_free_clone;
  94         struct gfs2_log_element rd_le;
  95         u32 rd_last_alloc_data;
  96         u32 rd_last_alloc_meta;
  97         struct gfs2_sbd *rd_sbd;
  98         unsigned long rd_flags;
  99 #define GFS2_RDF_CHECK        0x0001          /* Need to check for unlinked inodes */
 100 };
 101
 102 enum gfs2_state_bits {
 103         BH_Pinned = BH_PrivateStart,
 104         BH_Escaped = BH_PrivateStart + 1,
 105 };
 106
 107 BUFFER_FNS(Pinned, pinned)
 108 TAS_BUFFER_FNS(Pinned, pinned)
 109 BUFFER_FNS(Escaped, escaped)
 110 TAS_BUFFER_FNS(Escaped, escaped)
 111
 112 struct gfs2_bufdata {
 113         struct buffer_head *bd_bh;
 114         struct gfs2_glock *bd_gl;
 115
 116         struct list_head bd_list_tr;
 117         struct gfs2_log_element bd_le;
 118
 119         struct gfs2_ail *bd_ail;
 120         struct list_head bd_ail_st_list;
 121         struct list_head bd_ail_gl_list;
 122 };
 123
 124 struct gfs2_glock_operations {
 125         void (*go_xmote_th) (struct gfs2_glock *gl);
 126         void (*go_xmote_bh) (struct gfs2_glock *gl);
 127         void (*go_drop_th) (struct gfs2_glock *gl);
 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         const int go_type;
 133 };
 134
 135 enum {
 136         /* Actions */
 137         HIF_MUTEX               = 0,
 138         HIF_PROMOTE             = 1,
 139
 140         /* States */
 141         HIF_HOLDER              = 6,
 142         HIF_FIRST               = 7,
 143         HIF_ABORTED             = 9,
 144         HIF_WAIT                = 10,
 145 };
 146
 147 struct gfs2_holder {
 148         struct list_head gh_list;
 149
 150         struct gfs2_glock *gh_gl;
 151         pid_t gh_owner_pid;
 152         unsigned int gh_state;
 153         unsigned gh_flags;
 154
 155         int gh_error;
 156         unsigned long gh_iflags;
 157         unsigned long gh_ip;
 158 };
 159
 160 enum {
 161         GLF_LOCK                = 1,
 162         GLF_STICKY              = 2,
 163         GLF_DEMOTE              = 3,
 164         GLF_DIRTY               = 5,
 165 };
 166
 167 struct gfs2_glock {
 168         struct hlist_node gl_list;
 169         unsigned long gl_flags;         /* GLF_... */
 170         struct lm_lockname gl_name;
 171         atomic_t gl_ref;
 172
 173         spinlock_t gl_spin;
 174
 175         unsigned int gl_state;
 176         unsigned int gl_hash;
 177         unsigned int gl_demote_state; /* state requested by remote node */
 178         unsigned long gl_demote_time; /* time of first demote request */
 179         pid_t gl_owner_pid;
 180         unsigned long gl_ip;
 181         struct list_head gl_holders;
 182         struct list_head gl_waiters1;   /* HIF_MUTEX */
 183         struct list_head gl_waiters3;   /* HIF_PROMOTE */
 184
 185         const struct gfs2_glock_operations *gl_ops;
 186
 187         struct gfs2_holder *gl_req_gh;
 188         gfs2_glop_bh_t gl_req_bh;
 189
 190         void *gl_lock;
 191         char *gl_lvb;
 192         atomic_t gl_lvb_count;
 193
 194         u64 gl_vn;
 195         unsigned long gl_stamp;
 196         void *gl_object;
 197
 198         struct list_head gl_reclaim;
 199
 200         struct gfs2_sbd *gl_sbd;
 201
 202         struct inode *gl_aspace;
 203         struct gfs2_log_element gl_le;
 204         struct list_head gl_ail_list;
 205         atomic_t gl_ail_count;
 206 };
 207
 208 struct gfs2_alloc {
 209         /* Quota stuff */
 210
 211         struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
 212         struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
 213         unsigned int al_qd_num;
 214
 215         u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
 216         u32 al_alloced; /* Filled in by gfs2_alloc_*() */
 217
 218         /* Filled in by gfs2_inplace_reserve() */
 219
 220         unsigned int al_line;
 221         char *al_file;
 222         struct gfs2_holder al_ri_gh;
 223         struct gfs2_holder al_rgd_gh;
 224         struct gfs2_rgrpd *al_rgd;
 225
 226 };
 227
 228 enum {
 229         GIF_INVALID             = 0,
 230         GIF_QD_LOCKED           = 1,
 231         GIF_PAGED               = 2,
 232         GIF_SW_PAGED            = 3,
 233 };
 234
 235 struct gfs2_dinode_host {
 236         u64 di_size;            /* number of bytes in file */
 237         u64 di_blocks;          /* number of blocks in file */
 238         u64 di_goal_meta;       /* rgrp to alloc from next */
 239         u64 di_goal_data;       /* data block goal */
 240         u64 di_generation;      /* generation number for NFS */
 241         u32 di_flags;           /* GFS2_DIF_... */
 242         u16 di_height;          /* height of metadata */
 243         /* These only apply to directories  */
 244         u16 di_depth;           /* Number of bits in the table */
 245         u32 di_entries;         /* The number of entries in the directory */
 246         u64 di_eattr;           /* extended attribute block number */
 247 };
 248
 249 struct gfs2_inode {
 250         struct inode i_inode;
 251         u64 i_no_addr;
 252         u64 i_no_formal_ino;
 253         unsigned long i_flags;          /* GIF_... */
 254
 255         struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
 256
 257         struct gfs2_glock *i_gl; /* Move into i_gh? */
 258         struct gfs2_holder i_iopen_gh;
 259         struct gfs2_holder i_gh; /* for prepare/commit_write only */
 260         struct gfs2_alloc i_alloc;
 261         u64 i_last_rg_alloc;
 262
 263         spinlock_t i_spin;
 264         struct rw_semaphore i_rw_mutex;
 265         unsigned long i_last_pfault;
 266
 267         struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
 268 };
 269
 270 /*
 271  * Since i_inode is the first element of struct gfs2_inode,
 272  * this is effectively a cast.
 273  */
 274 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
 275 {
 276         return container_of(inode, struct gfs2_inode, i_inode);
 277 }
 278
 279 /* To be removed? */
 280 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
 281 {
 282         return inode->i_sb->s_fs_info;
 283 }
 284
 285 enum {
 286         GFF_DID_DIRECT_ALLOC    = 0,
 287         GFF_EXLOCK = 1,
 288 };
 289
 290 struct gfs2_file {
 291         unsigned long f_flags;          /* GFF_... */
 292         struct mutex f_fl_mutex;
 293         struct gfs2_holder f_fl_gh;
 294 };
 295
 296 struct gfs2_revoke {
 297         struct gfs2_log_element rv_le;
 298         u64 rv_blkno;
 299 };
 300
 301 struct gfs2_revoke_replay {
 302         struct list_head rr_list;
 303         u64 rr_blkno;
 304         unsigned int rr_where;
 305 };
 306
 307 enum {
 308         QDF_USER                = 0,
 309         QDF_CHANGE              = 1,
 310         QDF_LOCKED              = 2,
 311 };
 312
 313 struct gfs2_quota_data {
 314         struct list_head qd_list;
 315         unsigned int qd_count;
 316
 317         u32 qd_id;
 318         unsigned long qd_flags;         /* QDF_... */
 319
 320         s64 qd_change;
 321         s64 qd_change_sync;
 322
 323         unsigned int qd_slot;
 324         unsigned int qd_slot_count;
 325
 326         struct buffer_head *qd_bh;
 327         struct gfs2_quota_change *qd_bh_qc;
 328         unsigned int qd_bh_count;
 329
 330         struct gfs2_glock *qd_gl;
 331         struct gfs2_quota_lvb qd_qb;
 332
 333         u64 qd_sync_gen;
 334         unsigned long qd_last_warn;
 335         unsigned long qd_last_touched;
 336 };
 337
 338 struct gfs2_log_buf {
 339         struct list_head lb_list;
 340         struct buffer_head *lb_bh;
 341         struct buffer_head *lb_real;
 342 };
 343
 344 struct gfs2_trans {
 345         unsigned long tr_ip;
 346
 347         unsigned int tr_blocks;
 348         unsigned int tr_revokes;
 349         unsigned int tr_reserved;
 350
 351         struct gfs2_holder tr_t_gh;
 352
 353         int tr_touched;
 354
 355         unsigned int tr_num_buf;
 356         unsigned int tr_num_buf_new;
 357         unsigned int tr_num_databuf_new;
 358         unsigned int tr_num_buf_rm;
 359         unsigned int tr_num_databuf_rm;
 360         struct list_head tr_list_buf;
 361
 362         unsigned int tr_num_revoke;
 363         unsigned int tr_num_revoke_rm;
 364 };
 365
 366 struct gfs2_ail {
 367         struct list_head ai_list;
 368
 369         unsigned int ai_first;
 370         struct list_head ai_ail1_list;
 371         struct list_head ai_ail2_list;
 372
 373         u64 ai_sync_gen;
 374 };
 375
 376 struct gfs2_jdesc {
 377         struct list_head jd_list;
 378
 379         struct inode *jd_inode;
 380         unsigned int jd_jid;
 381         int jd_dirty;
 382
 383         unsigned int jd_blocks;
 384 };
 385
 386 struct gfs2_statfs_change_host {
 387         s64 sc_total;
 388         s64 sc_free;
 389         s64 sc_dinodes;
 390 };
 391
 392 #define GFS2_GLOCKD_DEFAULT     1
 393 #define GFS2_GLOCKD_MAX         16
 394
 395 #define GFS2_QUOTA_DEFAULT      GFS2_QUOTA_OFF
 396 #define GFS2_QUOTA_OFF          0
 397 #define GFS2_QUOTA_ACCOUNT      1
 398 #define GFS2_QUOTA_ON           2
 399
 400 #define GFS2_DATA_DEFAULT       GFS2_DATA_ORDERED
 401 #define GFS2_DATA_WRITEBACK     1
 402 #define GFS2_DATA_ORDERED       2
 403
 404 struct gfs2_args {
 405         char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
 406         char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
 407         char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
 408         int ar_spectator; /* Don't get a journal because we're always RO */
 409         int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
 410         int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
 411         int ar_localcaching; /* Local-style caching (dangerous on multihost) */
 412         int ar_debug; /* Oops on errors instead of trying to be graceful */
 413         int ar_upgrade; /* Upgrade ondisk/multihost format */
 414         unsigned int ar_num_glockd; /* Number of glockd threads */
 415         int ar_posix_acl; /* Enable posix acls */
 416         int ar_quota; /* off/account/on */
 417         int ar_suiddir; /* suiddir support */
 418         int ar_data; /* ordered/writeback */
 419 };
 420
 421 struct gfs2_tune {
 422         spinlock_t gt_spin;
 423
 424         unsigned int gt_ilimit;
 425         unsigned int gt_ilimit_tries;
 426         unsigned int gt_ilimit_min;
 427         unsigned int gt_demote_secs; /* Cache retention for unheld glock */
 428         unsigned int gt_incore_log_blocks;
 429         unsigned int gt_log_flush_secs;
 430         unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
 431
 432         unsigned int gt_scand_secs;
 433         unsigned int gt_recoverd_secs;
 434         unsigned int gt_logd_secs;
 435         unsigned int gt_quotad_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_readahead; /* Max bytes to read-ahead from disk */
 447         unsigned int gt_lockdump_size;
 448         unsigned int gt_stall_secs; /* Detects trouble! */
 449         unsigned int gt_complain_secs;
 450         unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
 451         unsigned int gt_statfs_quantum;
 452         unsigned int gt_statfs_slow;
 453 };
 454
 455 enum {
 456         SDF_JOURNAL_CHECKED     = 0,
 457         SDF_JOURNAL_LIVE        = 1,
 458         SDF_SHUTDOWN            = 2,
 459         SDF_NOATIME             = 3,
 460 };
 461
 462 #define GFS2_FSNAME_LEN         256
 463
 464 struct gfs2_inum_host {
 465         u64 no_formal_ino;
 466         u64 no_addr;
 467 };
 468
 469 struct gfs2_sb_host {
 470         u32 sb_magic;
 471         u32 sb_type;
 472         u32 sb_format;
 473
 474         u32 sb_fs_format;
 475         u32 sb_multihost_format;
 476         u32 sb_bsize;
 477         u32 sb_bsize_shift;
 478
 479         struct gfs2_inum_host sb_master_dir;
 480         struct gfs2_inum_host sb_root_dir;
 481
 482         char sb_lockproto[GFS2_LOCKNAME_LEN];
 483         char sb_locktable[GFS2_LOCKNAME_LEN];
 484 };
 485
 486 struct gfs2_sbd {
 487         struct super_block *sd_vfs;
 488         struct super_block *sd_vfs_meta;
 489         struct kobject sd_kobj;
 490         unsigned long sd_flags; /* SDF_... */
 491         struct gfs2_sb_host sd_sb;
 492
 493         /* Constants computed on mount */
 494
 495         u32 sd_fsb2bb;
 496         u32 sd_fsb2bb_shift;
 497         u32 sd_diptrs;  /* Number of pointers in a dinode */
 498         u32 sd_inptrs;  /* Number of pointers in a indirect block */
 499         u32 sd_jbsize;  /* Size of a journaled data block */
 500         u32 sd_hash_bsize;      /* sizeof(exhash block) */
 501         u32 sd_hash_bsize_shift;
 502         u32 sd_hash_ptrs;       /* Number of pointers in a hash block */
 503         u32 sd_qc_per_block;
 504         u32 sd_max_dirres;      /* Max blocks needed to add a directory entry */
 505         u32 sd_max_height;      /* Max height of a file's metadata tree */
 506         u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
 507         u32 sd_max_jheight; /* Max height of journaled file's meta tree */
 508         u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
 509
 510         struct gfs2_args sd_args;       /* Mount arguments */
 511         struct gfs2_tune sd_tune;       /* Filesystem tuning structure */
 512
 513         /* Lock Stuff */
 514
 515         struct lm_lockstruct sd_lockstruct;
 516         struct list_head sd_reclaim_list;
 517         spinlock_t sd_reclaim_lock;
 518         wait_queue_head_t sd_reclaim_wq;
 519         atomic_t sd_reclaim_count;
 520         struct gfs2_holder sd_live_gh;
 521         struct gfs2_glock *sd_rename_gl;
 522         struct gfs2_glock *sd_trans_gl;
 523
 524         /* Inode Stuff */
 525
 526         struct inode *sd_master_dir;
 527         struct inode *sd_jindex;
 528         struct inode *sd_inum_inode;
 529         struct inode *sd_statfs_inode;
 530         struct inode *sd_ir_inode;
 531         struct inode *sd_sc_inode;
 532         struct inode *sd_qc_inode;
 533         struct inode *sd_rindex;
 534         struct inode *sd_quota_inode;
 535
 536         /* Inum stuff */
 537
 538         struct mutex sd_inum_mutex;
 539
 540         /* StatFS stuff */
 541
 542         spinlock_t sd_statfs_spin;
 543         struct mutex sd_statfs_mutex;
 544         struct gfs2_statfs_change_host sd_statfs_master;
 545         struct gfs2_statfs_change_host sd_statfs_local;
 546         unsigned long sd_statfs_sync_time;
 547
 548         /* Resource group stuff */
 549
 550         u64 sd_rindex_vn;
 551         spinlock_t sd_rindex_spin;
 552         struct mutex sd_rindex_mutex;
 553         struct list_head sd_rindex_list;
 554         struct list_head sd_rindex_mru_list;
 555         struct list_head sd_rindex_recent_list;
 556         struct gfs2_rgrpd *sd_rindex_forward;
 557         unsigned int sd_rgrps;
 558
 559         /* Journal index stuff */
 560
 561         struct list_head sd_jindex_list;
 562         spinlock_t sd_jindex_spin;
 563         struct mutex sd_jindex_mutex;
 564         unsigned int sd_journals;
 565         unsigned long sd_jindex_refresh_time;
 566
 567         struct gfs2_jdesc *sd_jdesc;
 568         struct gfs2_holder sd_journal_gh;
 569         struct gfs2_holder sd_jinode_gh;
 570
 571         struct gfs2_holder sd_ir_gh;
 572         struct gfs2_holder sd_sc_gh;
 573         struct gfs2_holder sd_qc_gh;
 574
 575         /* Daemon stuff */
 576
 577         struct task_struct *sd_scand_process;
 578         struct task_struct *sd_recoverd_process;
 579         struct task_struct *sd_logd_process;
 580         struct task_struct *sd_quotad_process;
 581         struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
 582         unsigned int sd_glockd_num;
 583
 584         /* Quota stuff */
 585
 586         struct list_head sd_quota_list;
 587         atomic_t sd_quota_count;
 588         spinlock_t sd_quota_spin;
 589         struct mutex sd_quota_mutex;
 590
 591         unsigned int sd_quota_slots;
 592         unsigned int sd_quota_chunks;
 593         unsigned char **sd_quota_bitmap;
 594
 595         u64 sd_quota_sync_gen;
 596         unsigned long sd_quota_sync_time;
 597
 598         /* Log stuff */
 599
 600         spinlock_t sd_log_lock;
 601
 602         unsigned int sd_log_blks_reserved;
 603         unsigned int sd_log_commited_buf;
 604         unsigned int sd_log_commited_databuf;
 605         unsigned int sd_log_commited_revoke;
 606
 607         unsigned int sd_log_num_gl;
 608         unsigned int sd_log_num_buf;
 609         unsigned int sd_log_num_revoke;
 610         unsigned int sd_log_num_rg;
 611         unsigned int sd_log_num_databuf;
 612         unsigned int sd_log_num_jdata;
 613
 614         struct list_head sd_log_le_gl;
 615         struct list_head sd_log_le_buf;
 616         struct list_head sd_log_le_revoke;
 617         struct list_head sd_log_le_rg;
 618         struct list_head sd_log_le_databuf;
 619
 620         unsigned int sd_log_blks_free;
 621         struct mutex sd_log_reserve_mutex;
 622
 623         u64 sd_log_sequence;
 624         unsigned int sd_log_head;
 625         unsigned int sd_log_tail;
 626         int sd_log_idle;
 627
 628         unsigned long sd_log_flush_time;
 629         struct rw_semaphore sd_log_flush_lock;
 630         struct list_head sd_log_flush_list;
 631
 632         unsigned int sd_log_flush_head;
 633         u64 sd_log_flush_wrapped;
 634
 635         struct list_head sd_ail1_list;
 636         struct list_head sd_ail2_list;
 637         u64 sd_ail_sync_gen;
 638
 639         /* Replay stuff */
 640
 641         struct list_head sd_revoke_list;
 642         unsigned int sd_replay_tail;
 643
 644         unsigned int sd_found_blocks;
 645         unsigned int sd_found_revokes;
 646         unsigned int sd_replayed_blocks;
 647
 648         /* For quiescing the filesystem */
 649
 650         struct gfs2_holder sd_freeze_gh;
 651         struct mutex sd_freeze_lock;
 652         unsigned int sd_freeze_count;
 653
 654         /* Counters */
 655
 656         atomic_t sd_glock_count;
 657         atomic_t sd_glock_held_count;
 658         atomic_t sd_inode_count;
 659         atomic_t sd_reclaimed;
 660
 661         char sd_fsname[GFS2_FSNAME_LEN];
 662         char sd_table_name[GFS2_FSNAME_LEN];
 663         char sd_proto_name[GFS2_FSNAME_LEN];
 664
 665         /* Debugging crud */
 666
 667         unsigned long sd_last_warning;
 668         struct vfsmount *sd_gfs2mnt;
 669         struct dentry *debugfs_dir;    /* debugfs directory */
 670         struct dentry *debugfs_dentry_glocks; /* for debugfs */
 671 };
 672
 673 #endif /* __INCORE_DOT_H__ */
 674