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 #include <linux/workqueue.h>
  15
  16 #define DIO_WAIT        0x00000010
  17 #define DIO_METADATA    0x00000020
  18 #define DIO_ALL         0x00000100
  19
  20 struct gfs2_log_operations;
  21 struct gfs2_log_element;
  22 struct gfs2_holder;
  23 struct gfs2_glock;
  24 struct gfs2_quota_data;
  25 struct gfs2_trans;
  26 struct gfs2_ail;
  27 struct gfs2_jdesc;
  28 struct gfs2_sbd;
  29
  30 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
  31
  32 struct gfs2_log_header_host {
  33         u64 lh_sequence;        /* Sequence number of this transaction */
  34         u32 lh_flags;           /* GFS2_LOG_HEAD_... */
  35         u32 lh_tail;            /* Block number of log tail */
  36         u32 lh_blkno;
  37         u32 lh_hash;
  38 };
  39
  40 /*
  41  * Structure of operations that are associated with each
  42  * type of element in the log.
  43  */
  44
  45 struct gfs2_log_operations {
  46         void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
  47         void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
  48         void (*lo_before_commit) (struct gfs2_sbd *sdp);
  49         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
  50         void (*lo_before_scan) (struct gfs2_jdesc *jd,
  51                                 struct gfs2_log_header_host *head, int pass);
  52         int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
  53                                  struct gfs2_log_descriptor *ld, __be64 *ptr,
  54                                  int pass);
  55         void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
  56         const char *lo_name;
  57 };
  58
  59 struct gfs2_log_element {
  60         struct list_head le_list;
  61         const struct gfs2_log_operations *le_ops;
  62 };
  63
  64 struct gfs2_bitmap {
  65         struct buffer_head *bi_bh;
  66         char *bi_clone;
  67         u32 bi_offset;
  68         u32 bi_start;
  69         u32 bi_len;
  70 };
  71
  72 struct gfs2_rgrp_host {
  73         u32 rg_flags;
  74         u32 rg_free;
  75         u32 rg_dinodes;
  76         u64 rg_igeneration;
  77 };
  78
  79 struct gfs2_rgrpd {
  80         struct list_head rd_list;       /* Link with superblock */
  81         struct list_head rd_list_mru;
  82         struct list_head rd_recent;     /* Recently used rgrps */
  83         struct gfs2_glock *rd_gl;       /* Glock for this rgrp */
  84         u64 rd_addr;                    /* grp block disk address */
  85         u64 rd_data0;                   /* first data location */
  86         u32 rd_length;                  /* length of rgrp header in fs blocks */
  87         u32 rd_data;                    /* num of data blocks in rgrp */
  88         u32 rd_bitbytes;                /* number of bytes in data bitmaps */
  89         struct gfs2_rgrp_host rd_rg;
  90         u64 rd_rg_vn;
  91         struct gfs2_bitmap *rd_bits;
  92         unsigned int rd_bh_count;
  93         struct mutex rd_mutex;
  94         u32 rd_free_clone;
  95         struct gfs2_log_element rd_le;
  96         u32 rd_last_alloc_data;
  97         u32 rd_last_alloc_meta;
  98         struct gfs2_sbd *rd_sbd;
  99         unsigned long rd_flags;
 100 #define GFS2_RDF_CHECK        0x0001          /* Need to check for unlinked inodes */
 101 };
 102
 103 enum gfs2_state_bits {
 104         BH_Pinned = BH_PrivateStart,
 105         BH_Escaped = BH_PrivateStart + 1,
 106 };
 107
 108 BUFFER_FNS(Pinned, pinned)
 109 TAS_BUFFER_FNS(Pinned, pinned)
 110 BUFFER_FNS(Escaped, escaped)
 111 TAS_BUFFER_FNS(Escaped, escaped)
 112
 113 struct gfs2_bufdata {
 114         struct buffer_head *bd_bh;
 115         struct gfs2_glock *bd_gl;
 116
 117         union {
 118                 struct list_head list_tr;
 119                 u64 blkno;
 120         } u;
 121 #define bd_list_tr u.list_tr
 122 #define bd_blkno u.blkno
 123
 124         struct gfs2_log_element bd_le;
 125
 126         struct gfs2_ail *bd_ail;
 127         struct list_head bd_ail_st_list;
 128         struct list_head bd_ail_gl_list;
 129 };
 130
 131 struct gfs2_glock_operations {
 132         void (*go_xmote_th) (struct gfs2_glock *gl);
 133         void (*go_xmote_bh) (struct gfs2_glock *gl);
 134         void (*go_drop_th) (struct gfs2_glock *gl);
 135         void (*go_inval) (struct gfs2_glock *gl, int flags);
 136         int (*go_demote_ok) (struct gfs2_glock *gl);
 137         int (*go_lock) (struct gfs2_holder *gh);
 138         void (*go_unlock) (struct gfs2_holder *gh);
 139         const int go_type;
 140         const unsigned long go_min_hold_time;
 141 };
 142
 143 enum {
 144         /* Actions */
 145         HIF_MUTEX               = 0,
 146         HIF_PROMOTE             = 1,
 147
 148         /* States */
 149         HIF_HOLDER              = 6,
 150         HIF_FIRST               = 7,
 151         HIF_ABORTED             = 9,
 152         HIF_WAIT                = 10,
 153 };
 154
 155 struct gfs2_holder {
 156         struct list_head gh_list;
 157
 158         struct gfs2_glock *gh_gl;
 159         pid_t gh_owner_pid;
 160         unsigned int gh_state;
 161         unsigned gh_flags;
 162
 163         int gh_error;
 164         unsigned long gh_iflags;
 165         unsigned long gh_ip;
 166 };
 167
 168 enum {
 169         GLF_LOCK                = 1,
 170         GLF_STICKY              = 2,
 171         GLF_DEMOTE              = 3,
 172         GLF_PENDING_DEMOTE      = 4,
 173         GLF_DIRTY               = 5,
 174 };
 175
 176 struct gfs2_glock {
 177         struct hlist_node gl_list;
 178         unsigned long gl_flags;         /* GLF_... */
 179         struct lm_lockname gl_name;
 180         atomic_t gl_ref;
 181
 182         spinlock_t gl_spin;
 183
 184         unsigned int gl_state;
 185         unsigned int gl_hash;
 186         unsigned int gl_demote_state; /* state requested by remote node */
 187         unsigned long gl_demote_time; /* time of first demote request */
 188         pid_t gl_owner_pid;
 189         unsigned long gl_ip;
 190         struct list_head gl_holders;
 191         struct list_head gl_waiters1;   /* HIF_MUTEX */
 192         struct list_head gl_waiters3;   /* HIF_PROMOTE */
 193
 194         const struct gfs2_glock_operations *gl_ops;
 195
 196         struct gfs2_holder *gl_req_gh;
 197         gfs2_glop_bh_t gl_req_bh;
 198
 199         void *gl_lock;
 200         char *gl_lvb;
 201         atomic_t gl_lvb_count;
 202
 203         u64 gl_vn;
 204         unsigned long gl_stamp;
 205         unsigned long gl_tchange;
 206         void *gl_object;
 207
 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         struct delayed_work gl_work;
 217 };
 218
 219 struct gfs2_alloc {
 220         /* Quota stuff */
 221
 222         struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
 223         struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
 224         unsigned int al_qd_num;
 225
 226         u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
 227         u32 al_alloced; /* Filled in by gfs2_alloc_*() */
 228
 229         /* Filled in by gfs2_inplace_reserve() */
 230
 231         unsigned int al_line;
 232         char *al_file;
 233         struct gfs2_holder al_ri_gh;
 234         struct gfs2_holder al_rgd_gh;
 235         struct gfs2_rgrpd *al_rgd;
 236
 237 };
 238
 239 enum {
 240         GIF_INVALID             = 0,
 241         GIF_QD_LOCKED           = 1,
 242         GIF_PAGED               = 2,
 243         GIF_SW_PAGED            = 3,
 244 };
 245
 246 struct gfs2_dinode_host {
 247         u64 di_size;            /* number of bytes in file */
 248         u64 di_blocks;          /* number of blocks in file */
 249         u64 di_goal_meta;       /* rgrp to alloc from next */
 250         u64 di_goal_data;       /* data block goal */
 251         u64 di_generation;      /* generation number for NFS */
 252         u32 di_flags;           /* GFS2_DIF_... */
 253         u16 di_height;          /* height of metadata */
 254         /* These only apply to directories  */
 255         u16 di_depth;           /* Number of bits in the table */
 256         u32 di_entries;         /* The number of entries in the directory */
 257         u64 di_eattr;           /* extended attribute block number */
 258 };
 259
 260 struct gfs2_inode {
 261         struct inode i_inode;
 262         u64 i_no_addr;
 263         u64 i_no_formal_ino;
 264         unsigned long i_flags;          /* GIF_... */
 265
 266         struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
 267
 268         struct gfs2_glock *i_gl; /* Move into i_gh? */
 269         struct gfs2_holder i_iopen_gh;
 270         struct gfs2_holder i_gh; /* for prepare/commit_write only */
 271         struct gfs2_alloc i_alloc;
 272         u64 i_last_rg_alloc;
 273
 274         spinlock_t i_spin;
 275         struct rw_semaphore i_rw_mutex;
 276         unsigned long i_last_pfault;
 277
 278         struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
 279 };
 280
 281 /*
 282  * Since i_inode is the first element of struct gfs2_inode,
 283  * this is effectively a cast.
 284  */
 285 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
 286 {
 287         return container_of(inode, struct gfs2_inode, i_inode);
 288 }
 289
 290 /* To be removed? */
 291 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
 292 {
 293         return inode->i_sb->s_fs_info;
 294 }
 295
 296 enum {
 297         GFF_DID_DIRECT_ALLOC    = 0,
 298         GFF_EXLOCK = 1,
 299 };
 300
 301 struct gfs2_file {
 302         unsigned long f_flags;          /* GFF_... */
 303         struct mutex f_fl_mutex;
 304         struct gfs2_holder f_fl_gh;
 305 };
 306
 307 struct gfs2_revoke_replay {
 308         struct list_head rr_list;
 309         u64 rr_blkno;
 310         unsigned int rr_where;
 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         u32 qd_id;
 324         unsigned long qd_flags;         /* QDF_... */
 325
 326         s64 qd_change;
 327         s64 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         u64 qd_sync_gen;
 340         unsigned long qd_last_warn;
 341         unsigned long qd_last_touched;
 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_recoverd_secs;
 433         unsigned int gt_logd_secs;
 434         unsigned int gt_quotad_secs;
 435
 436         unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
 437         unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
 438         unsigned int gt_quota_scale_num; /* Numerator */
 439         unsigned int gt_quota_scale_den; /* Denominator */
 440         unsigned int gt_quota_cache_secs;
 441         unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
 442         unsigned int gt_atime_quantum; /* Min secs between atime updates */
 443         unsigned int gt_new_files_jdata;
 444         unsigned int gt_new_files_directio;
 445         unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
 446         unsigned int gt_lockdump_size;
 447         unsigned int gt_stall_secs; /* Detects trouble! */
 448         unsigned int gt_complain_secs;
 449         unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
 450         unsigned int gt_statfs_quantum;
 451         unsigned int gt_statfs_slow;
 452 };
 453
 454 enum {
 455         SDF_JOURNAL_CHECKED     = 0,
 456         SDF_JOURNAL_LIVE        = 1,
 457         SDF_SHUTDOWN            = 2,
 458         SDF_NOATIME             = 3,
 459 };
 460
 461 #define GFS2_FSNAME_LEN         256
 462
 463 struct gfs2_inum_host {
 464         u64 no_formal_ino;
 465         u64 no_addr;
 466 };
 467
 468 struct gfs2_sb_host {
 469         u32 sb_magic;
 470         u32 sb_type;
 471         u32 sb_format;
 472
 473         u32 sb_fs_format;
 474         u32 sb_multihost_format;
 475         u32 sb_bsize;
 476         u32 sb_bsize_shift;
 477
 478         struct gfs2_inum_host sb_master_dir;
 479         struct gfs2_inum_host sb_root_dir;
 480
 481         char sb_lockproto[GFS2_LOCKNAME_LEN];
 482         char sb_locktable[GFS2_LOCKNAME_LEN];
 483 };
 484
 485 struct gfs2_sbd {
 486         struct super_block *sd_vfs;
 487         struct super_block *sd_vfs_meta;
 488         struct kobject sd_kobj;
 489         unsigned long sd_flags; /* SDF_... */
 490         struct gfs2_sb_host sd_sb;
 491
 492         /* Constants computed on mount */
 493
 494         u32 sd_fsb2bb;
 495         u32 sd_fsb2bb_shift;
 496         u32 sd_diptrs;  /* Number of pointers in a dinode */
 497         u32 sd_inptrs;  /* Number of pointers in a indirect block */
 498         u32 sd_jbsize;  /* Size of a journaled data block */
 499         u32 sd_hash_bsize;      /* sizeof(exhash block) */
 500         u32 sd_hash_bsize_shift;
 501         u32 sd_hash_ptrs;       /* Number of pointers in a hash block */
 502         u32 sd_qc_per_block;
 503         u32 sd_max_dirres;      /* Max blocks needed to add a directory entry */
 504         u32 sd_max_height;      /* Max height of a file's metadata tree */
 505         u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
 506         u32 sd_max_jheight; /* Max height of journaled file's meta tree */
 507         u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
 508
 509         struct gfs2_args sd_args;       /* Mount arguments */
 510         struct gfs2_tune sd_tune;       /* Filesystem tuning structure */
 511
 512         /* Lock Stuff */
 513
 514         struct lm_lockstruct sd_lockstruct;
 515         struct list_head sd_reclaim_list;
 516         spinlock_t sd_reclaim_lock;
 517         wait_queue_head_t sd_reclaim_wq;
 518         atomic_t sd_reclaim_count;
 519         struct gfs2_holder sd_live_gh;
 520         struct gfs2_glock *sd_rename_gl;
 521         struct gfs2_glock *sd_trans_gl;
 522
 523         /* Inode Stuff */
 524
 525         struct inode *sd_master_dir;
 526         struct inode *sd_jindex;
 527         struct inode *sd_inum_inode;
 528         struct inode *sd_statfs_inode;
 529         struct inode *sd_ir_inode;
 530         struct inode *sd_sc_inode;
 531         struct inode *sd_qc_inode;
 532         struct inode *sd_rindex;
 533         struct inode *sd_quota_inode;
 534
 535         /* Inum stuff */
 536
 537         struct mutex sd_inum_mutex;
 538
 539         /* StatFS stuff */
 540
 541         spinlock_t sd_statfs_spin;
 542         struct mutex sd_statfs_mutex;
 543         struct gfs2_statfs_change_host sd_statfs_master;
 544         struct gfs2_statfs_change_host sd_statfs_local;
 545         unsigned long sd_statfs_sync_time;
 546
 547         /* Resource group stuff */
 548
 549         u64 sd_rindex_vn;
 550         spinlock_t sd_rindex_spin;
 551         struct mutex sd_rindex_mutex;
 552         struct list_head sd_rindex_list;
 553         struct list_head sd_rindex_mru_list;
 554         struct list_head sd_rindex_recent_list;
 555         struct gfs2_rgrpd *sd_rindex_forward;
 556         unsigned int sd_rgrps;
 557
 558         /* Journal index stuff */
 559
 560         struct list_head sd_jindex_list;
 561         spinlock_t sd_jindex_spin;
 562         struct mutex sd_jindex_mutex;
 563         unsigned int sd_journals;
 564         unsigned long sd_jindex_refresh_time;
 565
 566         struct gfs2_jdesc *sd_jdesc;
 567         struct gfs2_holder sd_journal_gh;
 568         struct gfs2_holder sd_jinode_gh;
 569
 570         struct gfs2_holder sd_ir_gh;
 571         struct gfs2_holder sd_sc_gh;
 572         struct gfs2_holder sd_qc_gh;
 573
 574         /* Daemon stuff */
 575
 576         struct task_struct *sd_recoverd_process;
 577         struct task_struct *sd_logd_process;
 578         struct task_struct *sd_quotad_process;
 579         struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
 580         unsigned int sd_glockd_num;
 581
 582         /* Quota stuff */
 583
 584         struct list_head sd_quota_list;
 585         atomic_t sd_quota_count;
 586         spinlock_t sd_quota_spin;
 587         struct mutex sd_quota_mutex;
 588
 589         unsigned int sd_quota_slots;
 590         unsigned int sd_quota_chunks;
 591         unsigned char **sd_quota_bitmap;
 592
 593         u64 sd_quota_sync_gen;
 594         unsigned long sd_quota_sync_time;
 595
 596         /* Log stuff */
 597
 598         spinlock_t sd_log_lock;
 599
 600         unsigned int sd_log_blks_reserved;
 601         unsigned int sd_log_commited_buf;
 602         unsigned int sd_log_commited_databuf;
 603         unsigned int sd_log_commited_revoke;
 604
 605         unsigned int sd_log_num_gl;
 606         unsigned int sd_log_num_buf;
 607         unsigned int sd_log_num_revoke;
 608         unsigned int sd_log_num_rg;
 609         unsigned int sd_log_num_databuf;
 610
 611         struct list_head sd_log_le_gl;
 612         struct list_head sd_log_le_buf;
 613         struct list_head sd_log_le_revoke;
 614         struct list_head sd_log_le_rg;
 615         struct list_head sd_log_le_databuf;
 616         struct list_head sd_log_le_ordered;
 617
 618         unsigned int sd_log_blks_free;
 619         struct mutex sd_log_reserve_mutex;
 620
 621         u64 sd_log_sequence;
 622         unsigned int sd_log_head;
 623         unsigned int sd_log_tail;
 624         int sd_log_idle;
 625
 626         unsigned long sd_log_flush_time;
 627         struct rw_semaphore sd_log_flush_lock;
 628         atomic_t sd_log_in_flight;
 629         wait_queue_head_t sd_log_flush_wait;
 630
 631         unsigned int sd_log_flush_head;
 632         u64 sd_log_flush_wrapped;
 633
 634         struct list_head sd_ail1_list;
 635         struct list_head sd_ail2_list;
 636         u64 sd_ail_sync_gen;
 637
 638         /* Replay stuff */
 639
 640         struct list_head sd_revoke_list;
 641         unsigned int sd_replay_tail;
 642
 643         unsigned int sd_found_blocks;
 644         unsigned int sd_found_revokes;
 645         unsigned int sd_replayed_blocks;
 646
 647         /* For quiescing the filesystem */
 648
 649         struct gfs2_holder sd_freeze_gh;
 650         struct mutex sd_freeze_lock;
 651         unsigned int sd_freeze_count;
 652
 653         /* Counters */
 654
 655         atomic_t sd_glock_count;
 656         atomic_t sd_glock_held_count;
 657         atomic_t sd_inode_count;
 658         atomic_t sd_reclaimed;
 659
 660         char sd_fsname[GFS2_FSNAME_LEN];
 661         char sd_table_name[GFS2_FSNAME_LEN];
 662         char sd_proto_name[GFS2_FSNAME_LEN];
 663
 664         /* Debugging crud */
 665
 666         unsigned long sd_last_warning;
 667         struct vfsmount *sd_gfs2mnt;
 668         struct dentry *debugfs_dir;    /* debugfs directory */
 669         struct dentry *debugfs_dentry_glocks; /* for debugfs */
 670 };
 671
 672 #endif /* __INCORE_DOT_H__ */
 673