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);
114 void (*go_greedy) (struct gfs2_glock *gl);
135 struct list_head gh_list;
137 struct gfs2_glock *gh_gl;
138 struct task_struct *gh_owner;
139 unsigned int gh_state;
143 unsigned long gh_iflags;
151 GLF_SKIP_WAITERS2 = 6,
156 struct hlist_node gl_list;
157 unsigned long gl_flags; /* GLF_... */
158 struct lm_lockname gl_name;
163 unsigned int gl_state;
164 unsigned int gl_hash;
165 struct task_struct *gl_owner;
167 struct list_head gl_holders;
168 struct list_head gl_waiters1; /* HIF_MUTEX */
169 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
170 struct list_head gl_waiters3; /* HIF_PROMOTE */
172 const struct gfs2_glock_operations *gl_ops;
174 struct gfs2_holder *gl_req_gh;
175 gfs2_glop_bh_t gl_req_bh;
179 atomic_t gl_lvb_count;
182 unsigned long gl_stamp;
185 struct list_head gl_reclaim;
187 struct gfs2_sbd *gl_sbd;
189 struct inode *gl_aspace;
190 struct gfs2_log_element gl_le;
191 struct list_head gl_ail_list;
192 atomic_t gl_ail_count;
198 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
199 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
200 unsigned int al_qd_num;
202 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
203 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
205 /* Filled in by gfs2_inplace_reserve() */
207 unsigned int al_line;
209 struct gfs2_holder al_ri_gh;
210 struct gfs2_holder al_rgd_gh;
211 struct gfs2_rgrpd *al_rgd;
223 struct inode i_inode;
224 struct gfs2_inum_host i_num;
226 unsigned long i_flags; /* GIF_... */
228 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
230 struct gfs2_glock *i_gl; /* Move into i_gh? */
231 struct gfs2_holder i_iopen_gh;
232 struct gfs2_holder i_gh; /* for prepare/commit_write only */
233 struct gfs2_alloc i_alloc;
237 struct rw_semaphore i_rw_mutex;
238 unsigned int i_greedy;
239 unsigned long i_last_pfault;
241 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
245 * Since i_inode is the first element of struct gfs2_inode,
246 * this is effectively a cast.
248 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
250 return container_of(inode, struct gfs2_inode, i_inode);
254 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
256 return inode->i_sb->s_fs_info;
260 GFF_DID_DIRECT_ALLOC = 0,
265 unsigned long f_flags; /* GFF_... */
266 struct mutex f_fl_mutex;
267 struct gfs2_holder f_fl_gh;
271 struct gfs2_log_element rv_le;
275 struct gfs2_revoke_replay {
276 struct list_head rr_list;
278 unsigned int rr_where;
287 struct gfs2_quota_lvb {
290 __be64 qb_limit; /* Hard limit of # blocks to alloc */
291 __be64 qb_warn; /* Warn user when alloc is above this # */
292 __be64 qb_value; /* Current # blocks allocated */
295 struct gfs2_quota_data {
296 struct list_head qd_list;
297 unsigned int qd_count;
300 unsigned long qd_flags; /* QDF_... */
305 unsigned int qd_slot;
306 unsigned int qd_slot_count;
308 struct buffer_head *qd_bh;
309 struct gfs2_quota_change *qd_bh_qc;
310 unsigned int qd_bh_count;
312 struct gfs2_glock *qd_gl;
313 struct gfs2_quota_lvb qd_qb;
316 unsigned long qd_last_warn;
317 unsigned long qd_last_touched;
320 struct gfs2_log_buf {
321 struct list_head lb_list;
322 struct buffer_head *lb_bh;
323 struct buffer_head *lb_real;
329 unsigned int tr_blocks;
330 unsigned int tr_revokes;
331 unsigned int tr_reserved;
333 struct gfs2_holder tr_t_gh;
337 unsigned int tr_num_buf;
338 unsigned int tr_num_buf_new;
339 unsigned int tr_num_buf_rm;
340 struct list_head tr_list_buf;
342 unsigned int tr_num_revoke;
343 unsigned int tr_num_revoke_rm;
347 struct list_head ai_list;
349 unsigned int ai_first;
350 struct list_head ai_ail1_list;
351 struct list_head ai_ail2_list;
357 struct list_head jd_list;
359 struct inode *jd_inode;
363 unsigned int jd_blocks;
366 #define GFS2_GLOCKD_DEFAULT 1
367 #define GFS2_GLOCKD_MAX 16
369 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
370 #define GFS2_QUOTA_OFF 0
371 #define GFS2_QUOTA_ACCOUNT 1
372 #define GFS2_QUOTA_ON 2
374 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
375 #define GFS2_DATA_WRITEBACK 1
376 #define GFS2_DATA_ORDERED 2
379 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
380 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
381 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
382 int ar_spectator; /* Don't get a journal because we're always RO */
383 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
384 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
385 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
386 int ar_debug; /* Oops on errors instead of trying to be graceful */
387 int ar_upgrade; /* Upgrade ondisk/multihost format */
388 unsigned int ar_num_glockd; /* Number of glockd threads */
389 int ar_posix_acl; /* Enable posix acls */
390 int ar_quota; /* off/account/on */
391 int ar_suiddir; /* suiddir support */
392 int ar_data; /* ordered/writeback */
398 unsigned int gt_ilimit;
399 unsigned int gt_ilimit_tries;
400 unsigned int gt_ilimit_min;
401 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
402 unsigned int gt_incore_log_blocks;
403 unsigned int gt_log_flush_secs;
404 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
406 unsigned int gt_scand_secs;
407 unsigned int gt_recoverd_secs;
408 unsigned int gt_logd_secs;
409 unsigned int gt_quotad_secs;
411 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
412 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
413 unsigned int gt_quota_scale_num; /* Numerator */
414 unsigned int gt_quota_scale_den; /* Denominator */
415 unsigned int gt_quota_cache_secs;
416 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
417 unsigned int gt_atime_quantum; /* Min secs between atime updates */
418 unsigned int gt_new_files_jdata;
419 unsigned int gt_new_files_directio;
420 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
421 unsigned int gt_lockdump_size;
422 unsigned int gt_stall_secs; /* Detects trouble! */
423 unsigned int gt_complain_secs;
424 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
425 unsigned int gt_entries_per_readdir;
426 unsigned int gt_greedy_default;
427 unsigned int gt_greedy_quantum;
428 unsigned int gt_greedy_max;
429 unsigned int gt_statfs_quantum;
430 unsigned int gt_statfs_slow;
434 SDF_JOURNAL_CHECKED = 0,
435 SDF_JOURNAL_LIVE = 1,
440 #define GFS2_FSNAME_LEN 256
443 struct super_block *sd_vfs;
444 struct super_block *sd_vfs_meta;
445 struct kobject sd_kobj;
446 unsigned long sd_flags; /* SDF_... */
447 struct gfs2_sb_host sd_sb;
449 /* Constants computed on mount */
453 u32 sd_diptrs; /* Number of pointers in a dinode */
454 u32 sd_inptrs; /* Number of pointers in a indirect block */
455 u32 sd_jbsize; /* Size of a journaled data block */
456 u32 sd_hash_bsize; /* sizeof(exhash block) */
457 u32 sd_hash_bsize_shift;
458 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
460 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
461 u32 sd_max_height; /* Max height of a file's metadata tree */
462 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
463 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
464 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
466 struct gfs2_args sd_args; /* Mount arguments */
467 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
471 struct lm_lockstruct sd_lockstruct;
472 struct list_head sd_reclaim_list;
473 spinlock_t sd_reclaim_lock;
474 wait_queue_head_t sd_reclaim_wq;
475 atomic_t sd_reclaim_count;
476 struct gfs2_holder sd_live_gh;
477 struct gfs2_glock *sd_rename_gl;
478 struct gfs2_glock *sd_trans_gl;
482 struct inode *sd_master_dir;
483 struct inode *sd_jindex;
484 struct inode *sd_inum_inode;
485 struct inode *sd_statfs_inode;
486 struct inode *sd_ir_inode;
487 struct inode *sd_sc_inode;
488 struct inode *sd_qc_inode;
489 struct inode *sd_rindex;
490 struct inode *sd_quota_inode;
494 struct mutex sd_inum_mutex;
498 spinlock_t sd_statfs_spin;
499 struct mutex sd_statfs_mutex;
500 struct gfs2_statfs_change_host sd_statfs_master;
501 struct gfs2_statfs_change_host sd_statfs_local;
502 unsigned long sd_statfs_sync_time;
504 /* Resource group stuff */
507 spinlock_t sd_rindex_spin;
508 struct mutex sd_rindex_mutex;
509 struct list_head sd_rindex_list;
510 struct list_head sd_rindex_mru_list;
511 struct list_head sd_rindex_recent_list;
512 struct gfs2_rgrpd *sd_rindex_forward;
513 unsigned int sd_rgrps;
515 /* Journal index stuff */
517 struct list_head sd_jindex_list;
518 spinlock_t sd_jindex_spin;
519 struct mutex sd_jindex_mutex;
520 unsigned int sd_journals;
521 unsigned long sd_jindex_refresh_time;
523 struct gfs2_jdesc *sd_jdesc;
524 struct gfs2_holder sd_journal_gh;
525 struct gfs2_holder sd_jinode_gh;
527 struct gfs2_holder sd_ir_gh;
528 struct gfs2_holder sd_sc_gh;
529 struct gfs2_holder sd_qc_gh;
533 struct task_struct *sd_scand_process;
534 struct task_struct *sd_recoverd_process;
535 struct task_struct *sd_logd_process;
536 struct task_struct *sd_quotad_process;
537 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
538 unsigned int sd_glockd_num;
542 struct list_head sd_quota_list;
543 atomic_t sd_quota_count;
544 spinlock_t sd_quota_spin;
545 struct mutex sd_quota_mutex;
547 unsigned int sd_quota_slots;
548 unsigned int sd_quota_chunks;
549 unsigned char **sd_quota_bitmap;
551 u64 sd_quota_sync_gen;
552 unsigned long sd_quota_sync_time;
556 spinlock_t sd_log_lock;
558 unsigned int sd_log_blks_reserved;
559 unsigned int sd_log_commited_buf;
560 unsigned int sd_log_commited_revoke;
562 unsigned int sd_log_num_gl;
563 unsigned int sd_log_num_buf;
564 unsigned int sd_log_num_revoke;
565 unsigned int sd_log_num_rg;
566 unsigned int sd_log_num_databuf;
567 unsigned int sd_log_num_jdata;
568 unsigned int sd_log_num_hdrs;
570 struct list_head sd_log_le_gl;
571 struct list_head sd_log_le_buf;
572 struct list_head sd_log_le_revoke;
573 struct list_head sd_log_le_rg;
574 struct list_head sd_log_le_databuf;
576 unsigned int sd_log_blks_free;
577 struct mutex sd_log_reserve_mutex;
580 unsigned int sd_log_head;
581 unsigned int sd_log_tail;
584 unsigned long sd_log_flush_time;
585 struct rw_semaphore sd_log_flush_lock;
586 struct list_head sd_log_flush_list;
588 unsigned int sd_log_flush_head;
589 u64 sd_log_flush_wrapped;
591 struct list_head sd_ail1_list;
592 struct list_head sd_ail2_list;
597 struct list_head sd_revoke_list;
598 unsigned int sd_replay_tail;
600 unsigned int sd_found_blocks;
601 unsigned int sd_found_revokes;
602 unsigned int sd_replayed_blocks;
604 /* For quiescing the filesystem */
606 struct gfs2_holder sd_freeze_gh;
607 struct mutex sd_freeze_lock;
608 unsigned int sd_freeze_count;
612 atomic_t sd_glock_count;
613 atomic_t sd_glock_held_count;
614 atomic_t sd_inode_count;
615 atomic_t sd_reclaimed;
617 char sd_fsname[GFS2_FSNAME_LEN];
618 char sd_table_name[GFS2_FSNAME_LEN];
619 char sd_proto_name[GFS2_FSNAME_LEN];
623 unsigned long sd_last_warning;
624 struct vfsmount *sd_gfs2mnt;
627 #endif /* __INCORE_DOT_H__ */