2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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.
10 #ifndef __INCORE_DOT_H__
11 #define __INCORE_DOT_H__
15 #define DIO_WAIT 0x00000010
16 #define DIO_METADATA 0x00000020
17 #define DIO_ALL 0x00000100
19 struct gfs2_log_operations;
20 struct gfs2_log_element;
23 struct gfs2_quota_data;
29 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
32 * Structure of operations that are associated with each
33 * type of element in the log.
36 struct gfs2_log_operations {
37 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
38 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
39 void (*lo_before_commit) (struct gfs2_sbd *sdp);
40 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
41 void (*lo_before_scan) (struct gfs2_jdesc *jd,
42 struct gfs2_log_header_host *head, int pass);
43 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
44 struct gfs2_log_descriptor *ld, __be64 *ptr,
46 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
50 struct gfs2_log_element {
51 struct list_head le_list;
52 const struct gfs2_log_operations *le_ops;
56 struct buffer_head *bi_bh;
64 struct list_head rd_list; /* Link with superblock */
65 struct list_head rd_list_mru;
66 struct list_head rd_recent; /* Recently used rgrps */
67 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
68 struct gfs2_rindex_host rd_ri;
69 struct gfs2_rgrp_host rd_rg;
71 struct gfs2_bitmap *rd_bits;
72 unsigned int rd_bh_count;
73 struct mutex rd_mutex;
75 struct gfs2_log_element rd_le;
76 u32 rd_last_alloc_data;
77 u32 rd_last_alloc_meta;
78 struct gfs2_sbd *rd_sbd;
81 enum gfs2_state_bits {
82 BH_Pinned = BH_PrivateStart,
83 BH_Escaped = BH_PrivateStart + 1,
86 BUFFER_FNS(Pinned, pinned)
87 TAS_BUFFER_FNS(Pinned, pinned)
88 BUFFER_FNS(Escaped, escaped)
89 TAS_BUFFER_FNS(Escaped, escaped)
92 struct buffer_head *bd_bh;
93 struct gfs2_glock *bd_gl;
95 struct list_head bd_list_tr;
96 struct gfs2_log_element bd_le;
98 struct gfs2_ail *bd_ail;
99 struct list_head bd_ail_st_list;
100 struct list_head bd_ail_gl_list;
103 struct gfs2_glock_operations {
104 void (*go_xmote_th) (struct gfs2_glock *gl);
105 void (*go_xmote_bh) (struct gfs2_glock *gl);
106 void (*go_drop_th) (struct gfs2_glock *gl);
107 void (*go_inval) (struct gfs2_glock *gl, int flags);
108 int (*go_demote_ok) (struct gfs2_glock *gl);
109 int (*go_lock) (struct gfs2_holder *gh);
110 void (*go_unlock) (struct gfs2_holder *gh);
127 struct list_head gh_list;
129 struct gfs2_glock *gh_gl;
131 unsigned int gh_state;
135 unsigned long gh_iflags;
147 struct hlist_node gl_list;
148 unsigned long gl_flags; /* GLF_... */
149 struct lm_lockname gl_name;
154 unsigned int gl_state;
155 unsigned int gl_hash;
156 unsigned int gl_demote_state; /* state requested by remote node */
157 unsigned long gl_demote_time; /* time of first demote request */
160 struct list_head gl_holders;
161 struct list_head gl_waiters1; /* HIF_MUTEX */
162 struct list_head gl_waiters3; /* HIF_PROMOTE */
164 const struct gfs2_glock_operations *gl_ops;
166 struct gfs2_holder *gl_req_gh;
167 gfs2_glop_bh_t gl_req_bh;
171 atomic_t gl_lvb_count;
174 unsigned long gl_stamp;
177 struct list_head gl_reclaim;
179 struct gfs2_sbd *gl_sbd;
181 struct inode *gl_aspace;
182 struct gfs2_log_element gl_le;
183 struct list_head gl_ail_list;
184 atomic_t gl_ail_count;
190 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
191 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
192 unsigned int al_qd_num;
194 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
195 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
197 /* Filled in by gfs2_inplace_reserve() */
199 unsigned int al_line;
201 struct gfs2_holder al_ri_gh;
202 struct gfs2_holder al_rgd_gh;
203 struct gfs2_rgrpd *al_rgd;
215 struct inode i_inode;
218 unsigned long i_flags; /* GIF_... */
220 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
222 struct gfs2_glock *i_gl; /* Move into i_gh? */
223 struct gfs2_holder i_iopen_gh;
224 struct gfs2_holder i_gh; /* for prepare/commit_write only */
225 struct gfs2_alloc i_alloc;
229 struct rw_semaphore i_rw_mutex;
230 unsigned long i_last_pfault;
232 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
236 * Since i_inode is the first element of struct gfs2_inode,
237 * this is effectively a cast.
239 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
241 return container_of(inode, struct gfs2_inode, i_inode);
245 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
247 return inode->i_sb->s_fs_info;
251 GFF_DID_DIRECT_ALLOC = 0,
256 unsigned long f_flags; /* GFF_... */
257 struct mutex f_fl_mutex;
258 struct gfs2_holder f_fl_gh;
262 struct gfs2_log_element rv_le;
266 struct gfs2_revoke_replay {
267 struct list_head rr_list;
269 unsigned int rr_where;
278 struct gfs2_quota_data {
279 struct list_head qd_list;
280 unsigned int qd_count;
283 unsigned long qd_flags; /* QDF_... */
288 unsigned int qd_slot;
289 unsigned int qd_slot_count;
291 struct buffer_head *qd_bh;
292 struct gfs2_quota_change *qd_bh_qc;
293 unsigned int qd_bh_count;
295 struct gfs2_glock *qd_gl;
296 struct gfs2_quota_lvb qd_qb;
299 unsigned long qd_last_warn;
300 unsigned long qd_last_touched;
303 struct gfs2_log_buf {
304 struct list_head lb_list;
305 struct buffer_head *lb_bh;
306 struct buffer_head *lb_real;
312 unsigned int tr_blocks;
313 unsigned int tr_revokes;
314 unsigned int tr_reserved;
316 struct gfs2_holder tr_t_gh;
320 unsigned int tr_num_buf;
321 unsigned int tr_num_buf_new;
322 unsigned int tr_num_buf_rm;
323 struct list_head tr_list_buf;
325 unsigned int tr_num_revoke;
326 unsigned int tr_num_revoke_rm;
330 struct list_head ai_list;
332 unsigned int ai_first;
333 struct list_head ai_ail1_list;
334 struct list_head ai_ail2_list;
340 struct list_head jd_list;
342 struct inode *jd_inode;
346 unsigned int jd_blocks;
349 #define GFS2_GLOCKD_DEFAULT 1
350 #define GFS2_GLOCKD_MAX 16
352 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
353 #define GFS2_QUOTA_OFF 0
354 #define GFS2_QUOTA_ACCOUNT 1
355 #define GFS2_QUOTA_ON 2
357 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
358 #define GFS2_DATA_WRITEBACK 1
359 #define GFS2_DATA_ORDERED 2
362 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
363 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
364 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
365 int ar_spectator; /* Don't get a journal because we're always RO */
366 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
367 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
368 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
369 int ar_debug; /* Oops on errors instead of trying to be graceful */
370 int ar_upgrade; /* Upgrade ondisk/multihost format */
371 unsigned int ar_num_glockd; /* Number of glockd threads */
372 int ar_posix_acl; /* Enable posix acls */
373 int ar_quota; /* off/account/on */
374 int ar_suiddir; /* suiddir support */
375 int ar_data; /* ordered/writeback */
381 unsigned int gt_ilimit;
382 unsigned int gt_ilimit_tries;
383 unsigned int gt_ilimit_min;
384 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
385 unsigned int gt_incore_log_blocks;
386 unsigned int gt_log_flush_secs;
387 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
389 unsigned int gt_scand_secs;
390 unsigned int gt_recoverd_secs;
391 unsigned int gt_logd_secs;
392 unsigned int gt_quotad_secs;
394 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
395 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
396 unsigned int gt_quota_scale_num; /* Numerator */
397 unsigned int gt_quota_scale_den; /* Denominator */
398 unsigned int gt_quota_cache_secs;
399 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
400 unsigned int gt_atime_quantum; /* Min secs between atime updates */
401 unsigned int gt_new_files_jdata;
402 unsigned int gt_new_files_directio;
403 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
404 unsigned int gt_lockdump_size;
405 unsigned int gt_stall_secs; /* Detects trouble! */
406 unsigned int gt_complain_secs;
407 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
408 unsigned int gt_statfs_quantum;
409 unsigned int gt_statfs_slow;
413 SDF_JOURNAL_CHECKED = 0,
414 SDF_JOURNAL_LIVE = 1,
419 #define GFS2_FSNAME_LEN 256
422 struct super_block *sd_vfs;
423 struct super_block *sd_vfs_meta;
424 struct kobject sd_kobj;
425 unsigned long sd_flags; /* SDF_... */
426 struct gfs2_sb_host sd_sb;
428 /* Constants computed on mount */
432 u32 sd_diptrs; /* Number of pointers in a dinode */
433 u32 sd_inptrs; /* Number of pointers in a indirect block */
434 u32 sd_jbsize; /* Size of a journaled data block */
435 u32 sd_hash_bsize; /* sizeof(exhash block) */
436 u32 sd_hash_bsize_shift;
437 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
439 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
440 u32 sd_max_height; /* Max height of a file's metadata tree */
441 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
442 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
443 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
445 struct gfs2_args sd_args; /* Mount arguments */
446 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
450 struct lm_lockstruct sd_lockstruct;
451 struct list_head sd_reclaim_list;
452 spinlock_t sd_reclaim_lock;
453 wait_queue_head_t sd_reclaim_wq;
454 atomic_t sd_reclaim_count;
455 struct gfs2_holder sd_live_gh;
456 struct gfs2_glock *sd_rename_gl;
457 struct gfs2_glock *sd_trans_gl;
461 struct inode *sd_master_dir;
462 struct inode *sd_jindex;
463 struct inode *sd_inum_inode;
464 struct inode *sd_statfs_inode;
465 struct inode *sd_ir_inode;
466 struct inode *sd_sc_inode;
467 struct inode *sd_qc_inode;
468 struct inode *sd_rindex;
469 struct inode *sd_quota_inode;
473 struct mutex sd_inum_mutex;
477 spinlock_t sd_statfs_spin;
478 struct mutex sd_statfs_mutex;
479 struct gfs2_statfs_change_host sd_statfs_master;
480 struct gfs2_statfs_change_host sd_statfs_local;
481 unsigned long sd_statfs_sync_time;
483 /* Resource group stuff */
486 spinlock_t sd_rindex_spin;
487 struct mutex sd_rindex_mutex;
488 struct list_head sd_rindex_list;
489 struct list_head sd_rindex_mru_list;
490 struct list_head sd_rindex_recent_list;
491 struct gfs2_rgrpd *sd_rindex_forward;
492 unsigned int sd_rgrps;
494 /* Journal index stuff */
496 struct list_head sd_jindex_list;
497 spinlock_t sd_jindex_spin;
498 struct mutex sd_jindex_mutex;
499 unsigned int sd_journals;
500 unsigned long sd_jindex_refresh_time;
502 struct gfs2_jdesc *sd_jdesc;
503 struct gfs2_holder sd_journal_gh;
504 struct gfs2_holder sd_jinode_gh;
506 struct gfs2_holder sd_ir_gh;
507 struct gfs2_holder sd_sc_gh;
508 struct gfs2_holder sd_qc_gh;
512 struct task_struct *sd_scand_process;
513 struct task_struct *sd_recoverd_process;
514 struct task_struct *sd_logd_process;
515 struct task_struct *sd_quotad_process;
516 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
517 unsigned int sd_glockd_num;
521 struct list_head sd_quota_list;
522 atomic_t sd_quota_count;
523 spinlock_t sd_quota_spin;
524 struct mutex sd_quota_mutex;
526 unsigned int sd_quota_slots;
527 unsigned int sd_quota_chunks;
528 unsigned char **sd_quota_bitmap;
530 u64 sd_quota_sync_gen;
531 unsigned long sd_quota_sync_time;
535 spinlock_t sd_log_lock;
537 unsigned int sd_log_blks_reserved;
538 unsigned int sd_log_commited_buf;
539 unsigned int sd_log_commited_revoke;
541 unsigned int sd_log_num_gl;
542 unsigned int sd_log_num_buf;
543 unsigned int sd_log_num_revoke;
544 unsigned int sd_log_num_rg;
545 unsigned int sd_log_num_databuf;
546 unsigned int sd_log_num_jdata;
547 unsigned int sd_log_num_hdrs;
549 struct list_head sd_log_le_gl;
550 struct list_head sd_log_le_buf;
551 struct list_head sd_log_le_revoke;
552 struct list_head sd_log_le_rg;
553 struct list_head sd_log_le_databuf;
555 unsigned int sd_log_blks_free;
556 struct mutex sd_log_reserve_mutex;
559 unsigned int sd_log_head;
560 unsigned int sd_log_tail;
563 unsigned long sd_log_flush_time;
564 struct rw_semaphore sd_log_flush_lock;
565 struct list_head sd_log_flush_list;
567 unsigned int sd_log_flush_head;
568 u64 sd_log_flush_wrapped;
570 struct list_head sd_ail1_list;
571 struct list_head sd_ail2_list;
576 struct list_head sd_revoke_list;
577 unsigned int sd_replay_tail;
579 unsigned int sd_found_blocks;
580 unsigned int sd_found_revokes;
581 unsigned int sd_replayed_blocks;
583 /* For quiescing the filesystem */
585 struct gfs2_holder sd_freeze_gh;
586 struct mutex sd_freeze_lock;
587 unsigned int sd_freeze_count;
591 atomic_t sd_glock_count;
592 atomic_t sd_glock_held_count;
593 atomic_t sd_inode_count;
594 atomic_t sd_reclaimed;
596 char sd_fsname[GFS2_FSNAME_LEN];
597 char sd_table_name[GFS2_FSNAME_LEN];
598 char sd_proto_name[GFS2_FSNAME_LEN];
602 unsigned long sd_last_warning;
603 struct vfsmount *sd_gfs2mnt;
604 struct dentry *debugfs_dir; /* debugfs directory */
605 struct dentry *debugfs_dentry_glocks; /* for debugfs */
608 #endif /* __INCORE_DOT_H__ */