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;
216 struct gfs2_inum_host i_num;
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_lvb {
281 __be64 qb_limit; /* Hard limit of # blocks to alloc */
282 __be64 qb_warn; /* Warn user when alloc is above this # */
283 __be64 qb_value; /* Current # blocks allocated */
286 struct gfs2_quota_data {
287 struct list_head qd_list;
288 unsigned int qd_count;
291 unsigned long qd_flags; /* QDF_... */
296 unsigned int qd_slot;
297 unsigned int qd_slot_count;
299 struct buffer_head *qd_bh;
300 struct gfs2_quota_change *qd_bh_qc;
301 unsigned int qd_bh_count;
303 struct gfs2_glock *qd_gl;
304 struct gfs2_quota_lvb qd_qb;
307 unsigned long qd_last_warn;
308 unsigned long qd_last_touched;
311 struct gfs2_log_buf {
312 struct list_head lb_list;
313 struct buffer_head *lb_bh;
314 struct buffer_head *lb_real;
320 unsigned int tr_blocks;
321 unsigned int tr_revokes;
322 unsigned int tr_reserved;
324 struct gfs2_holder tr_t_gh;
328 unsigned int tr_num_buf;
329 unsigned int tr_num_buf_new;
330 unsigned int tr_num_buf_rm;
331 struct list_head tr_list_buf;
333 unsigned int tr_num_revoke;
334 unsigned int tr_num_revoke_rm;
338 struct list_head ai_list;
340 unsigned int ai_first;
341 struct list_head ai_ail1_list;
342 struct list_head ai_ail2_list;
348 struct list_head jd_list;
350 struct inode *jd_inode;
354 unsigned int jd_blocks;
357 #define GFS2_GLOCKD_DEFAULT 1
358 #define GFS2_GLOCKD_MAX 16
360 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
361 #define GFS2_QUOTA_OFF 0
362 #define GFS2_QUOTA_ACCOUNT 1
363 #define GFS2_QUOTA_ON 2
365 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
366 #define GFS2_DATA_WRITEBACK 1
367 #define GFS2_DATA_ORDERED 2
370 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
371 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
372 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
373 int ar_spectator; /* Don't get a journal because we're always RO */
374 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
375 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
376 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
377 int ar_debug; /* Oops on errors instead of trying to be graceful */
378 int ar_upgrade; /* Upgrade ondisk/multihost format */
379 unsigned int ar_num_glockd; /* Number of glockd threads */
380 int ar_posix_acl; /* Enable posix acls */
381 int ar_quota; /* off/account/on */
382 int ar_suiddir; /* suiddir support */
383 int ar_data; /* ordered/writeback */
389 unsigned int gt_ilimit;
390 unsigned int gt_ilimit_tries;
391 unsigned int gt_ilimit_min;
392 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
393 unsigned int gt_incore_log_blocks;
394 unsigned int gt_log_flush_secs;
395 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
397 unsigned int gt_scand_secs;
398 unsigned int gt_recoverd_secs;
399 unsigned int gt_logd_secs;
400 unsigned int gt_quotad_secs;
402 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
403 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
404 unsigned int gt_quota_scale_num; /* Numerator */
405 unsigned int gt_quota_scale_den; /* Denominator */
406 unsigned int gt_quota_cache_secs;
407 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
408 unsigned int gt_atime_quantum; /* Min secs between atime updates */
409 unsigned int gt_new_files_jdata;
410 unsigned int gt_new_files_directio;
411 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
412 unsigned int gt_lockdump_size;
413 unsigned int gt_stall_secs; /* Detects trouble! */
414 unsigned int gt_complain_secs;
415 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
416 unsigned int gt_statfs_quantum;
417 unsigned int gt_statfs_slow;
421 SDF_JOURNAL_CHECKED = 0,
422 SDF_JOURNAL_LIVE = 1,
427 #define GFS2_FSNAME_LEN 256
430 struct super_block *sd_vfs;
431 struct super_block *sd_vfs_meta;
432 struct kobject sd_kobj;
433 unsigned long sd_flags; /* SDF_... */
434 struct gfs2_sb_host sd_sb;
436 /* Constants computed on mount */
440 u32 sd_diptrs; /* Number of pointers in a dinode */
441 u32 sd_inptrs; /* Number of pointers in a indirect block */
442 u32 sd_jbsize; /* Size of a journaled data block */
443 u32 sd_hash_bsize; /* sizeof(exhash block) */
444 u32 sd_hash_bsize_shift;
445 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
447 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
448 u32 sd_max_height; /* Max height of a file's metadata tree */
449 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
450 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
451 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
453 struct gfs2_args sd_args; /* Mount arguments */
454 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
458 struct lm_lockstruct sd_lockstruct;
459 struct list_head sd_reclaim_list;
460 spinlock_t sd_reclaim_lock;
461 wait_queue_head_t sd_reclaim_wq;
462 atomic_t sd_reclaim_count;
463 struct gfs2_holder sd_live_gh;
464 struct gfs2_glock *sd_rename_gl;
465 struct gfs2_glock *sd_trans_gl;
469 struct inode *sd_master_dir;
470 struct inode *sd_jindex;
471 struct inode *sd_inum_inode;
472 struct inode *sd_statfs_inode;
473 struct inode *sd_ir_inode;
474 struct inode *sd_sc_inode;
475 struct inode *sd_qc_inode;
476 struct inode *sd_rindex;
477 struct inode *sd_quota_inode;
481 struct mutex sd_inum_mutex;
485 spinlock_t sd_statfs_spin;
486 struct mutex sd_statfs_mutex;
487 struct gfs2_statfs_change_host sd_statfs_master;
488 struct gfs2_statfs_change_host sd_statfs_local;
489 unsigned long sd_statfs_sync_time;
491 /* Resource group stuff */
494 spinlock_t sd_rindex_spin;
495 struct mutex sd_rindex_mutex;
496 struct list_head sd_rindex_list;
497 struct list_head sd_rindex_mru_list;
498 struct list_head sd_rindex_recent_list;
499 struct gfs2_rgrpd *sd_rindex_forward;
500 unsigned int sd_rgrps;
502 /* Journal index stuff */
504 struct list_head sd_jindex_list;
505 spinlock_t sd_jindex_spin;
506 struct mutex sd_jindex_mutex;
507 unsigned int sd_journals;
508 unsigned long sd_jindex_refresh_time;
510 struct gfs2_jdesc *sd_jdesc;
511 struct gfs2_holder sd_journal_gh;
512 struct gfs2_holder sd_jinode_gh;
514 struct gfs2_holder sd_ir_gh;
515 struct gfs2_holder sd_sc_gh;
516 struct gfs2_holder sd_qc_gh;
520 struct task_struct *sd_scand_process;
521 struct task_struct *sd_recoverd_process;
522 struct task_struct *sd_logd_process;
523 struct task_struct *sd_quotad_process;
524 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
525 unsigned int sd_glockd_num;
529 struct list_head sd_quota_list;
530 atomic_t sd_quota_count;
531 spinlock_t sd_quota_spin;
532 struct mutex sd_quota_mutex;
534 unsigned int sd_quota_slots;
535 unsigned int sd_quota_chunks;
536 unsigned char **sd_quota_bitmap;
538 u64 sd_quota_sync_gen;
539 unsigned long sd_quota_sync_time;
543 spinlock_t sd_log_lock;
545 unsigned int sd_log_blks_reserved;
546 unsigned int sd_log_commited_buf;
547 unsigned int sd_log_commited_revoke;
549 unsigned int sd_log_num_gl;
550 unsigned int sd_log_num_buf;
551 unsigned int sd_log_num_revoke;
552 unsigned int sd_log_num_rg;
553 unsigned int sd_log_num_databuf;
554 unsigned int sd_log_num_jdata;
555 unsigned int sd_log_num_hdrs;
557 struct list_head sd_log_le_gl;
558 struct list_head sd_log_le_buf;
559 struct list_head sd_log_le_revoke;
560 struct list_head sd_log_le_rg;
561 struct list_head sd_log_le_databuf;
563 unsigned int sd_log_blks_free;
564 struct mutex sd_log_reserve_mutex;
567 unsigned int sd_log_head;
568 unsigned int sd_log_tail;
571 unsigned long sd_log_flush_time;
572 struct rw_semaphore sd_log_flush_lock;
573 struct list_head sd_log_flush_list;
575 unsigned int sd_log_flush_head;
576 u64 sd_log_flush_wrapped;
578 struct list_head sd_ail1_list;
579 struct list_head sd_ail2_list;
584 struct list_head sd_revoke_list;
585 unsigned int sd_replay_tail;
587 unsigned int sd_found_blocks;
588 unsigned int sd_found_revokes;
589 unsigned int sd_replayed_blocks;
591 /* For quiescing the filesystem */
593 struct gfs2_holder sd_freeze_gh;
594 struct mutex sd_freeze_lock;
595 unsigned int sd_freeze_count;
599 atomic_t sd_glock_count;
600 atomic_t sd_glock_held_count;
601 atomic_t sd_inode_count;
602 atomic_t sd_reclaimed;
604 char sd_fsname[GFS2_FSNAME_LEN];
605 char sd_table_name[GFS2_FSNAME_LEN];
606 char sd_proto_name[GFS2_FSNAME_LEN];
610 unsigned long sd_last_warning;
611 struct vfsmount *sd_gfs2mnt;
612 struct dentry *debugfs_dir; /* debugfs directory */
613 struct dentry *debugfs_dentry_glocks; /* for debugfs */
616 #endif /* __INCORE_DOT_H__ */