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);
130 struct list_head gh_list;
132 struct gfs2_glock *gh_gl;
133 struct task_struct *gh_owner;
134 unsigned int gh_state;
138 unsigned long gh_iflags;
146 GLF_SKIP_WAITERS2 = 6,
150 struct hlist_node gl_list;
151 unsigned long gl_flags; /* GLF_... */
152 struct lm_lockname gl_name;
157 unsigned int gl_state;
158 unsigned int gl_hash;
159 struct task_struct *gl_owner;
161 struct list_head gl_holders;
162 struct list_head gl_waiters1; /* HIF_MUTEX */
163 struct list_head gl_waiters2; /* HIF_DEMOTE */
164 struct list_head gl_waiters3; /* HIF_PROMOTE */
166 const struct gfs2_glock_operations *gl_ops;
168 struct gfs2_holder *gl_req_gh;
169 gfs2_glop_bh_t gl_req_bh;
173 atomic_t gl_lvb_count;
176 unsigned long gl_stamp;
179 struct list_head gl_reclaim;
181 struct gfs2_sbd *gl_sbd;
183 struct inode *gl_aspace;
184 struct gfs2_log_element gl_le;
185 struct list_head gl_ail_list;
186 atomic_t gl_ail_count;
192 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
193 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
194 unsigned int al_qd_num;
196 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
197 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
199 /* Filled in by gfs2_inplace_reserve() */
201 unsigned int al_line;
203 struct gfs2_holder al_ri_gh;
204 struct gfs2_holder al_rgd_gh;
205 struct gfs2_rgrpd *al_rgd;
217 struct inode i_inode;
218 struct gfs2_inum_host i_num;
220 unsigned long i_flags; /* GIF_... */
222 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
224 struct gfs2_glock *i_gl; /* Move into i_gh? */
225 struct gfs2_holder i_iopen_gh;
226 struct gfs2_holder i_gh; /* for prepare/commit_write only */
227 struct gfs2_alloc i_alloc;
231 struct rw_semaphore i_rw_mutex;
232 unsigned long i_last_pfault;
234 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
238 * Since i_inode is the first element of struct gfs2_inode,
239 * this is effectively a cast.
241 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
243 return container_of(inode, struct gfs2_inode, i_inode);
247 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
249 return inode->i_sb->s_fs_info;
253 GFF_DID_DIRECT_ALLOC = 0,
258 unsigned long f_flags; /* GFF_... */
259 struct mutex f_fl_mutex;
260 struct gfs2_holder f_fl_gh;
264 struct gfs2_log_element rv_le;
268 struct gfs2_revoke_replay {
269 struct list_head rr_list;
271 unsigned int rr_where;
280 struct gfs2_quota_lvb {
283 __be64 qb_limit; /* Hard limit of # blocks to alloc */
284 __be64 qb_warn; /* Warn user when alloc is above this # */
285 __be64 qb_value; /* Current # blocks allocated */
288 struct gfs2_quota_data {
289 struct list_head qd_list;
290 unsigned int qd_count;
293 unsigned long qd_flags; /* QDF_... */
298 unsigned int qd_slot;
299 unsigned int qd_slot_count;
301 struct buffer_head *qd_bh;
302 struct gfs2_quota_change *qd_bh_qc;
303 unsigned int qd_bh_count;
305 struct gfs2_glock *qd_gl;
306 struct gfs2_quota_lvb qd_qb;
309 unsigned long qd_last_warn;
310 unsigned long qd_last_touched;
313 struct gfs2_log_buf {
314 struct list_head lb_list;
315 struct buffer_head *lb_bh;
316 struct buffer_head *lb_real;
322 unsigned int tr_blocks;
323 unsigned int tr_revokes;
324 unsigned int tr_reserved;
326 struct gfs2_holder tr_t_gh;
330 unsigned int tr_num_buf;
331 unsigned int tr_num_buf_new;
332 unsigned int tr_num_buf_rm;
333 struct list_head tr_list_buf;
335 unsigned int tr_num_revoke;
336 unsigned int tr_num_revoke_rm;
340 struct list_head ai_list;
342 unsigned int ai_first;
343 struct list_head ai_ail1_list;
344 struct list_head ai_ail2_list;
350 struct list_head jd_list;
352 struct inode *jd_inode;
356 unsigned int jd_blocks;
359 #define GFS2_GLOCKD_DEFAULT 1
360 #define GFS2_GLOCKD_MAX 16
362 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
363 #define GFS2_QUOTA_OFF 0
364 #define GFS2_QUOTA_ACCOUNT 1
365 #define GFS2_QUOTA_ON 2
367 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
368 #define GFS2_DATA_WRITEBACK 1
369 #define GFS2_DATA_ORDERED 2
372 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
373 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
374 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
375 int ar_spectator; /* Don't get a journal because we're always RO */
376 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
377 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
378 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
379 int ar_debug; /* Oops on errors instead of trying to be graceful */
380 int ar_upgrade; /* Upgrade ondisk/multihost format */
381 unsigned int ar_num_glockd; /* Number of glockd threads */
382 int ar_posix_acl; /* Enable posix acls */
383 int ar_quota; /* off/account/on */
384 int ar_suiddir; /* suiddir support */
385 int ar_data; /* ordered/writeback */
391 unsigned int gt_ilimit;
392 unsigned int gt_ilimit_tries;
393 unsigned int gt_ilimit_min;
394 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
395 unsigned int gt_incore_log_blocks;
396 unsigned int gt_log_flush_secs;
397 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
399 unsigned int gt_scand_secs;
400 unsigned int gt_recoverd_secs;
401 unsigned int gt_logd_secs;
402 unsigned int gt_quotad_secs;
404 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
405 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
406 unsigned int gt_quota_scale_num; /* Numerator */
407 unsigned int gt_quota_scale_den; /* Denominator */
408 unsigned int gt_quota_cache_secs;
409 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
410 unsigned int gt_atime_quantum; /* Min secs between atime updates */
411 unsigned int gt_new_files_jdata;
412 unsigned int gt_new_files_directio;
413 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
414 unsigned int gt_lockdump_size;
415 unsigned int gt_stall_secs; /* Detects trouble! */
416 unsigned int gt_complain_secs;
417 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
418 unsigned int gt_statfs_quantum;
419 unsigned int gt_statfs_slow;
423 SDF_JOURNAL_CHECKED = 0,
424 SDF_JOURNAL_LIVE = 1,
429 #define GFS2_FSNAME_LEN 256
432 struct super_block *sd_vfs;
433 struct super_block *sd_vfs_meta;
434 struct kobject sd_kobj;
435 unsigned long sd_flags; /* SDF_... */
436 struct gfs2_sb_host sd_sb;
438 /* Constants computed on mount */
442 u32 sd_diptrs; /* Number of pointers in a dinode */
443 u32 sd_inptrs; /* Number of pointers in a indirect block */
444 u32 sd_jbsize; /* Size of a journaled data block */
445 u32 sd_hash_bsize; /* sizeof(exhash block) */
446 u32 sd_hash_bsize_shift;
447 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
449 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
450 u32 sd_max_height; /* Max height of a file's metadata tree */
451 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
452 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
453 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
455 struct gfs2_args sd_args; /* Mount arguments */
456 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
460 struct lm_lockstruct sd_lockstruct;
461 struct list_head sd_reclaim_list;
462 spinlock_t sd_reclaim_lock;
463 wait_queue_head_t sd_reclaim_wq;
464 atomic_t sd_reclaim_count;
465 struct gfs2_holder sd_live_gh;
466 struct gfs2_glock *sd_rename_gl;
467 struct gfs2_glock *sd_trans_gl;
471 struct inode *sd_master_dir;
472 struct inode *sd_jindex;
473 struct inode *sd_inum_inode;
474 struct inode *sd_statfs_inode;
475 struct inode *sd_ir_inode;
476 struct inode *sd_sc_inode;
477 struct inode *sd_qc_inode;
478 struct inode *sd_rindex;
479 struct inode *sd_quota_inode;
483 struct mutex sd_inum_mutex;
487 spinlock_t sd_statfs_spin;
488 struct mutex sd_statfs_mutex;
489 struct gfs2_statfs_change_host sd_statfs_master;
490 struct gfs2_statfs_change_host sd_statfs_local;
491 unsigned long sd_statfs_sync_time;
493 /* Resource group stuff */
496 spinlock_t sd_rindex_spin;
497 struct mutex sd_rindex_mutex;
498 struct list_head sd_rindex_list;
499 struct list_head sd_rindex_mru_list;
500 struct list_head sd_rindex_recent_list;
501 struct gfs2_rgrpd *sd_rindex_forward;
502 unsigned int sd_rgrps;
504 /* Journal index stuff */
506 struct list_head sd_jindex_list;
507 spinlock_t sd_jindex_spin;
508 struct mutex sd_jindex_mutex;
509 unsigned int sd_journals;
510 unsigned long sd_jindex_refresh_time;
512 struct gfs2_jdesc *sd_jdesc;
513 struct gfs2_holder sd_journal_gh;
514 struct gfs2_holder sd_jinode_gh;
516 struct gfs2_holder sd_ir_gh;
517 struct gfs2_holder sd_sc_gh;
518 struct gfs2_holder sd_qc_gh;
522 struct task_struct *sd_scand_process;
523 struct task_struct *sd_recoverd_process;
524 struct task_struct *sd_logd_process;
525 struct task_struct *sd_quotad_process;
526 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
527 unsigned int sd_glockd_num;
531 struct list_head sd_quota_list;
532 atomic_t sd_quota_count;
533 spinlock_t sd_quota_spin;
534 struct mutex sd_quota_mutex;
536 unsigned int sd_quota_slots;
537 unsigned int sd_quota_chunks;
538 unsigned char **sd_quota_bitmap;
540 u64 sd_quota_sync_gen;
541 unsigned long sd_quota_sync_time;
545 spinlock_t sd_log_lock;
547 unsigned int sd_log_blks_reserved;
548 unsigned int sd_log_commited_buf;
549 unsigned int sd_log_commited_revoke;
551 unsigned int sd_log_num_gl;
552 unsigned int sd_log_num_buf;
553 unsigned int sd_log_num_revoke;
554 unsigned int sd_log_num_rg;
555 unsigned int sd_log_num_databuf;
556 unsigned int sd_log_num_jdata;
557 unsigned int sd_log_num_hdrs;
559 struct list_head sd_log_le_gl;
560 struct list_head sd_log_le_buf;
561 struct list_head sd_log_le_revoke;
562 struct list_head sd_log_le_rg;
563 struct list_head sd_log_le_databuf;
565 unsigned int sd_log_blks_free;
566 struct mutex sd_log_reserve_mutex;
569 unsigned int sd_log_head;
570 unsigned int sd_log_tail;
573 unsigned long sd_log_flush_time;
574 struct rw_semaphore sd_log_flush_lock;
575 struct list_head sd_log_flush_list;
577 unsigned int sd_log_flush_head;
578 u64 sd_log_flush_wrapped;
580 struct list_head sd_ail1_list;
581 struct list_head sd_ail2_list;
586 struct list_head sd_revoke_list;
587 unsigned int sd_replay_tail;
589 unsigned int sd_found_blocks;
590 unsigned int sd_found_revokes;
591 unsigned int sd_replayed_blocks;
593 /* For quiescing the filesystem */
595 struct gfs2_holder sd_freeze_gh;
596 struct mutex sd_freeze_lock;
597 unsigned int sd_freeze_count;
601 atomic_t sd_glock_count;
602 atomic_t sd_glock_held_count;
603 atomic_t sd_inode_count;
604 atomic_t sd_reclaimed;
606 char sd_fsname[GFS2_FSNAME_LEN];
607 char sd_table_name[GFS2_FSNAME_LEN];
608 char sd_proto_name[GFS2_FSNAME_LEN];
612 unsigned long sd_last_warning;
613 struct vfsmount *sd_gfs2mnt;
616 #endif /* __INCORE_DOT_H__ */