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, unsigned int state, int flags);
105 void (*go_xmote_bh) (struct gfs2_glock *gl);
106 void (*go_drop_th) (struct gfs2_glock *gl);
107 void (*go_drop_bh) (struct gfs2_glock *gl);
108 void (*go_sync) (struct gfs2_glock *gl);
109 void (*go_inval) (struct gfs2_glock *gl, int flags);
110 int (*go_demote_ok) (struct gfs2_glock *gl);
111 int (*go_lock) (struct gfs2_holder *gh);
112 void (*go_unlock) (struct gfs2_holder *gh);
113 void (*go_callback) (struct gfs2_glock *gl, unsigned int state);
133 struct list_head gh_list;
135 struct gfs2_glock *gh_gl;
136 struct task_struct *gh_owner;
137 unsigned int gh_state;
141 unsigned long gh_iflags;
149 GLF_SKIP_WAITERS2 = 6,
153 struct hlist_node gl_list;
154 unsigned long gl_flags; /* GLF_... */
155 struct lm_lockname gl_name;
160 unsigned int gl_state;
161 unsigned int gl_hash;
162 struct task_struct *gl_owner;
164 struct list_head gl_holders;
165 struct list_head gl_waiters1; /* HIF_MUTEX */
166 struct list_head gl_waiters2; /* HIF_DEMOTE */
167 struct list_head gl_waiters3; /* HIF_PROMOTE */
169 const struct gfs2_glock_operations *gl_ops;
171 struct gfs2_holder *gl_req_gh;
172 gfs2_glop_bh_t gl_req_bh;
176 atomic_t gl_lvb_count;
179 unsigned long gl_stamp;
182 struct list_head gl_reclaim;
184 struct gfs2_sbd *gl_sbd;
186 struct inode *gl_aspace;
187 struct gfs2_log_element gl_le;
188 struct list_head gl_ail_list;
189 atomic_t gl_ail_count;
195 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
196 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
197 unsigned int al_qd_num;
199 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
200 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
202 /* Filled in by gfs2_inplace_reserve() */
204 unsigned int al_line;
206 struct gfs2_holder al_ri_gh;
207 struct gfs2_holder al_rgd_gh;
208 struct gfs2_rgrpd *al_rgd;
220 struct inode i_inode;
221 struct gfs2_inum_host i_num;
223 unsigned long i_flags; /* GIF_... */
225 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
227 struct gfs2_glock *i_gl; /* Move into i_gh? */
228 struct gfs2_holder i_iopen_gh;
229 struct gfs2_holder i_gh; /* for prepare/commit_write only */
230 struct gfs2_alloc i_alloc;
234 struct rw_semaphore i_rw_mutex;
235 unsigned long i_last_pfault;
237 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
241 * Since i_inode is the first element of struct gfs2_inode,
242 * this is effectively a cast.
244 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
246 return container_of(inode, struct gfs2_inode, i_inode);
250 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
252 return inode->i_sb->s_fs_info;
256 GFF_DID_DIRECT_ALLOC = 0,
261 unsigned long f_flags; /* GFF_... */
262 struct mutex f_fl_mutex;
263 struct gfs2_holder f_fl_gh;
267 struct gfs2_log_element rv_le;
271 struct gfs2_revoke_replay {
272 struct list_head rr_list;
274 unsigned int rr_where;
283 struct gfs2_quota_lvb {
286 __be64 qb_limit; /* Hard limit of # blocks to alloc */
287 __be64 qb_warn; /* Warn user when alloc is above this # */
288 __be64 qb_value; /* Current # blocks allocated */
291 struct gfs2_quota_data {
292 struct list_head qd_list;
293 unsigned int qd_count;
296 unsigned long qd_flags; /* QDF_... */
301 unsigned int qd_slot;
302 unsigned int qd_slot_count;
304 struct buffer_head *qd_bh;
305 struct gfs2_quota_change *qd_bh_qc;
306 unsigned int qd_bh_count;
308 struct gfs2_glock *qd_gl;
309 struct gfs2_quota_lvb qd_qb;
312 unsigned long qd_last_warn;
313 unsigned long qd_last_touched;
316 struct gfs2_log_buf {
317 struct list_head lb_list;
318 struct buffer_head *lb_bh;
319 struct buffer_head *lb_real;
325 unsigned int tr_blocks;
326 unsigned int tr_revokes;
327 unsigned int tr_reserved;
329 struct gfs2_holder tr_t_gh;
333 unsigned int tr_num_buf;
334 unsigned int tr_num_buf_new;
335 unsigned int tr_num_buf_rm;
336 struct list_head tr_list_buf;
338 unsigned int tr_num_revoke;
339 unsigned int tr_num_revoke_rm;
343 struct list_head ai_list;
345 unsigned int ai_first;
346 struct list_head ai_ail1_list;
347 struct list_head ai_ail2_list;
353 struct list_head jd_list;
355 struct inode *jd_inode;
359 unsigned int jd_blocks;
362 #define GFS2_GLOCKD_DEFAULT 1
363 #define GFS2_GLOCKD_MAX 16
365 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
366 #define GFS2_QUOTA_OFF 0
367 #define GFS2_QUOTA_ACCOUNT 1
368 #define GFS2_QUOTA_ON 2
370 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
371 #define GFS2_DATA_WRITEBACK 1
372 #define GFS2_DATA_ORDERED 2
375 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
376 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
377 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
378 int ar_spectator; /* Don't get a journal because we're always RO */
379 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
380 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
381 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
382 int ar_debug; /* Oops on errors instead of trying to be graceful */
383 int ar_upgrade; /* Upgrade ondisk/multihost format */
384 unsigned int ar_num_glockd; /* Number of glockd threads */
385 int ar_posix_acl; /* Enable posix acls */
386 int ar_quota; /* off/account/on */
387 int ar_suiddir; /* suiddir support */
388 int ar_data; /* ordered/writeback */
394 unsigned int gt_ilimit;
395 unsigned int gt_ilimit_tries;
396 unsigned int gt_ilimit_min;
397 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
398 unsigned int gt_incore_log_blocks;
399 unsigned int gt_log_flush_secs;
400 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
402 unsigned int gt_scand_secs;
403 unsigned int gt_recoverd_secs;
404 unsigned int gt_logd_secs;
405 unsigned int gt_quotad_secs;
407 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
408 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
409 unsigned int gt_quota_scale_num; /* Numerator */
410 unsigned int gt_quota_scale_den; /* Denominator */
411 unsigned int gt_quota_cache_secs;
412 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
413 unsigned int gt_atime_quantum; /* Min secs between atime updates */
414 unsigned int gt_new_files_jdata;
415 unsigned int gt_new_files_directio;
416 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
417 unsigned int gt_lockdump_size;
418 unsigned int gt_stall_secs; /* Detects trouble! */
419 unsigned int gt_complain_secs;
420 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
421 unsigned int gt_entries_per_readdir;
422 unsigned int gt_statfs_quantum;
423 unsigned int gt_statfs_slow;
427 SDF_JOURNAL_CHECKED = 0,
428 SDF_JOURNAL_LIVE = 1,
433 #define GFS2_FSNAME_LEN 256
436 struct super_block *sd_vfs;
437 struct super_block *sd_vfs_meta;
438 struct kobject sd_kobj;
439 unsigned long sd_flags; /* SDF_... */
440 struct gfs2_sb_host sd_sb;
442 /* Constants computed on mount */
446 u32 sd_diptrs; /* Number of pointers in a dinode */
447 u32 sd_inptrs; /* Number of pointers in a indirect block */
448 u32 sd_jbsize; /* Size of a journaled data block */
449 u32 sd_hash_bsize; /* sizeof(exhash block) */
450 u32 sd_hash_bsize_shift;
451 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
453 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
454 u32 sd_max_height; /* Max height of a file's metadata tree */
455 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
456 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
457 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
459 struct gfs2_args sd_args; /* Mount arguments */
460 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
464 struct lm_lockstruct sd_lockstruct;
465 struct list_head sd_reclaim_list;
466 spinlock_t sd_reclaim_lock;
467 wait_queue_head_t sd_reclaim_wq;
468 atomic_t sd_reclaim_count;
469 struct gfs2_holder sd_live_gh;
470 struct gfs2_glock *sd_rename_gl;
471 struct gfs2_glock *sd_trans_gl;
475 struct inode *sd_master_dir;
476 struct inode *sd_jindex;
477 struct inode *sd_inum_inode;
478 struct inode *sd_statfs_inode;
479 struct inode *sd_ir_inode;
480 struct inode *sd_sc_inode;
481 struct inode *sd_qc_inode;
482 struct inode *sd_rindex;
483 struct inode *sd_quota_inode;
487 struct mutex sd_inum_mutex;
491 spinlock_t sd_statfs_spin;
492 struct mutex sd_statfs_mutex;
493 struct gfs2_statfs_change_host sd_statfs_master;
494 struct gfs2_statfs_change_host sd_statfs_local;
495 unsigned long sd_statfs_sync_time;
497 /* Resource group stuff */
500 spinlock_t sd_rindex_spin;
501 struct mutex sd_rindex_mutex;
502 struct list_head sd_rindex_list;
503 struct list_head sd_rindex_mru_list;
504 struct list_head sd_rindex_recent_list;
505 struct gfs2_rgrpd *sd_rindex_forward;
506 unsigned int sd_rgrps;
508 /* Journal index stuff */
510 struct list_head sd_jindex_list;
511 spinlock_t sd_jindex_spin;
512 struct mutex sd_jindex_mutex;
513 unsigned int sd_journals;
514 unsigned long sd_jindex_refresh_time;
516 struct gfs2_jdesc *sd_jdesc;
517 struct gfs2_holder sd_journal_gh;
518 struct gfs2_holder sd_jinode_gh;
520 struct gfs2_holder sd_ir_gh;
521 struct gfs2_holder sd_sc_gh;
522 struct gfs2_holder sd_qc_gh;
526 struct task_struct *sd_scand_process;
527 struct task_struct *sd_recoverd_process;
528 struct task_struct *sd_logd_process;
529 struct task_struct *sd_quotad_process;
530 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
531 unsigned int sd_glockd_num;
535 struct list_head sd_quota_list;
536 atomic_t sd_quota_count;
537 spinlock_t sd_quota_spin;
538 struct mutex sd_quota_mutex;
540 unsigned int sd_quota_slots;
541 unsigned int sd_quota_chunks;
542 unsigned char **sd_quota_bitmap;
544 u64 sd_quota_sync_gen;
545 unsigned long sd_quota_sync_time;
549 spinlock_t sd_log_lock;
551 unsigned int sd_log_blks_reserved;
552 unsigned int sd_log_commited_buf;
553 unsigned int sd_log_commited_revoke;
555 unsigned int sd_log_num_gl;
556 unsigned int sd_log_num_buf;
557 unsigned int sd_log_num_revoke;
558 unsigned int sd_log_num_rg;
559 unsigned int sd_log_num_databuf;
560 unsigned int sd_log_num_jdata;
561 unsigned int sd_log_num_hdrs;
563 struct list_head sd_log_le_gl;
564 struct list_head sd_log_le_buf;
565 struct list_head sd_log_le_revoke;
566 struct list_head sd_log_le_rg;
567 struct list_head sd_log_le_databuf;
569 unsigned int sd_log_blks_free;
570 struct mutex sd_log_reserve_mutex;
573 unsigned int sd_log_head;
574 unsigned int sd_log_tail;
577 unsigned long sd_log_flush_time;
578 struct rw_semaphore sd_log_flush_lock;
579 struct list_head sd_log_flush_list;
581 unsigned int sd_log_flush_head;
582 u64 sd_log_flush_wrapped;
584 struct list_head sd_ail1_list;
585 struct list_head sd_ail2_list;
590 struct list_head sd_revoke_list;
591 unsigned int sd_replay_tail;
593 unsigned int sd_found_blocks;
594 unsigned int sd_found_revokes;
595 unsigned int sd_replayed_blocks;
597 /* For quiescing the filesystem */
599 struct gfs2_holder sd_freeze_gh;
600 struct mutex sd_freeze_lock;
601 unsigned int sd_freeze_count;
605 atomic_t sd_glock_count;
606 atomic_t sd_glock_held_count;
607 atomic_t sd_inode_count;
608 atomic_t sd_reclaimed;
610 char sd_fsname[GFS2_FSNAME_LEN];
611 char sd_table_name[GFS2_FSNAME_LEN];
612 char sd_proto_name[GFS2_FSNAME_LEN];
616 unsigned long sd_last_warning;
617 struct vfsmount *sd_gfs2mnt;
620 #endif /* __INCORE_DOT_H__ */