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__
14 #include <linux/workqueue.h>
16 #define DIO_WAIT 0x00000010
17 #define DIO_METADATA 0x00000020
18 #define DIO_ALL 0x00000100
20 struct gfs2_log_operations;
21 struct gfs2_log_element;
24 struct gfs2_quota_data;
30 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
32 struct gfs2_log_header_host {
33 u64 lh_sequence; /* Sequence number of this transaction */
34 u32 lh_flags; /* GFS2_LOG_HEAD_... */
35 u32 lh_tail; /* Block number of log tail */
41 * Structure of operations that are associated with each
42 * type of element in the log.
45 struct gfs2_log_operations {
46 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
47 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
48 void (*lo_before_commit) (struct gfs2_sbd *sdp);
49 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
50 void (*lo_before_scan) (struct gfs2_jdesc *jd,
51 struct gfs2_log_header_host *head, int pass);
52 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
53 struct gfs2_log_descriptor *ld, __be64 *ptr,
55 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
59 struct gfs2_log_element {
60 struct list_head le_list;
61 const struct gfs2_log_operations *le_ops;
65 struct buffer_head *bi_bh;
72 struct gfs2_rgrp_host {
80 struct list_head rd_list; /* Link with superblock */
81 struct list_head rd_list_mru;
82 struct list_head rd_recent; /* Recently used rgrps */
83 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
84 u64 rd_addr; /* grp block disk address */
85 u64 rd_data0; /* first data location */
86 u32 rd_length; /* length of rgrp header in fs blocks */
87 u32 rd_data; /* num of data blocks in rgrp */
88 u32 rd_bitbytes; /* number of bytes in data bitmaps */
89 struct gfs2_rgrp_host rd_rg;
91 struct gfs2_bitmap *rd_bits;
92 unsigned int rd_bh_count;
93 struct mutex rd_mutex;
95 struct gfs2_log_element rd_le;
96 u32 rd_last_alloc_data;
97 u32 rd_last_alloc_meta;
98 struct gfs2_sbd *rd_sbd;
99 unsigned long rd_flags;
100 #define GFS2_RDF_CHECK 0x0001 /* Need to check for unlinked inodes */
103 enum gfs2_state_bits {
104 BH_Pinned = BH_PrivateStart,
105 BH_Escaped = BH_PrivateStart + 1,
108 BUFFER_FNS(Pinned, pinned)
109 TAS_BUFFER_FNS(Pinned, pinned)
110 BUFFER_FNS(Escaped, escaped)
111 TAS_BUFFER_FNS(Escaped, escaped)
113 struct gfs2_bufdata {
114 struct buffer_head *bd_bh;
115 struct gfs2_glock *bd_gl;
118 struct list_head list_tr;
121 #define bd_list_tr u.list_tr
122 #define bd_blkno u.blkno
124 struct gfs2_log_element bd_le;
126 struct gfs2_ail *bd_ail;
127 struct list_head bd_ail_st_list;
128 struct list_head bd_ail_gl_list;
131 struct gfs2_glock_operations {
132 void (*go_xmote_th) (struct gfs2_glock *gl);
133 void (*go_xmote_bh) (struct gfs2_glock *gl);
134 void (*go_drop_th) (struct gfs2_glock *gl);
135 void (*go_inval) (struct gfs2_glock *gl, int flags);
136 int (*go_demote_ok) (struct gfs2_glock *gl);
137 int (*go_lock) (struct gfs2_holder *gh);
138 void (*go_unlock) (struct gfs2_holder *gh);
140 const unsigned long go_min_hold_time;
152 struct list_head gh_list;
154 struct gfs2_glock *gh_gl;
156 unsigned int gh_state;
160 unsigned long gh_iflags;
168 GLF_PENDING_DEMOTE = 4,
170 GLF_DEMOTE_IN_PROGRESS = 6,
175 struct hlist_node gl_list;
176 unsigned long gl_flags; /* GLF_... */
177 struct lm_lockname gl_name;
182 unsigned int gl_state;
183 unsigned int gl_hash;
184 unsigned int gl_demote_state; /* state requested by remote node */
185 unsigned long gl_demote_time; /* time of first demote request */
188 struct list_head gl_holders;
189 struct list_head gl_waiters1; /* HIF_MUTEX */
190 struct list_head gl_waiters3; /* HIF_PROMOTE */
191 int gl_waiters2; /* GIF_DEMOTE */
193 const struct gfs2_glock_operations *gl_ops;
195 struct gfs2_holder *gl_req_gh;
196 gfs2_glop_bh_t gl_req_bh;
200 atomic_t gl_lvb_count;
203 unsigned long gl_stamp;
204 unsigned long gl_tchange;
207 struct list_head gl_reclaim;
209 struct gfs2_sbd *gl_sbd;
211 struct inode *gl_aspace;
212 struct list_head gl_ail_list;
213 atomic_t gl_ail_count;
214 struct delayed_work gl_work;
220 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
221 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
222 unsigned int al_qd_num;
224 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
225 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
227 /* Filled in by gfs2_inplace_reserve() */
229 unsigned int al_line;
231 struct gfs2_holder al_ri_gh;
232 struct gfs2_holder al_rgd_gh;
233 struct gfs2_rgrpd *al_rgd;
243 struct gfs2_dinode_host {
244 u64 di_size; /* number of bytes in file */
245 u64 di_blocks; /* number of blocks in file */
246 u64 di_goal_meta; /* rgrp to alloc from next */
247 u64 di_goal_data; /* data block goal */
248 u64 di_generation; /* generation number for NFS */
249 u32 di_flags; /* GFS2_DIF_... */
250 u16 di_height; /* height of metadata */
251 /* These only apply to directories */
252 u16 di_depth; /* Number of bits in the table */
253 u32 di_entries; /* The number of entries in the directory */
254 u64 di_eattr; /* extended attribute block number */
258 struct inode i_inode;
261 unsigned long i_flags; /* GIF_... */
263 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
265 struct gfs2_glock *i_gl; /* Move into i_gh? */
266 struct gfs2_holder i_iopen_gh;
267 struct gfs2_holder i_gh; /* for prepare/commit_write only */
268 struct gfs2_alloc i_alloc;
272 struct rw_semaphore i_rw_mutex;
276 * Since i_inode is the first element of struct gfs2_inode,
277 * this is effectively a cast.
279 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
281 return container_of(inode, struct gfs2_inode, i_inode);
284 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
286 return inode->i_sb->s_fs_info;
290 struct mutex f_fl_mutex;
291 struct gfs2_holder f_fl_gh;
294 struct gfs2_revoke_replay {
295 struct list_head rr_list;
297 unsigned int rr_where;
306 struct gfs2_quota_data {
307 struct list_head qd_list;
308 unsigned int qd_count;
311 unsigned long qd_flags; /* QDF_... */
316 unsigned int qd_slot;
317 unsigned int qd_slot_count;
319 struct buffer_head *qd_bh;
320 struct gfs2_quota_change *qd_bh_qc;
321 unsigned int qd_bh_count;
323 struct gfs2_glock *qd_gl;
324 struct gfs2_quota_lvb qd_qb;
327 unsigned long qd_last_warn;
328 unsigned long qd_last_touched;
334 unsigned int tr_blocks;
335 unsigned int tr_revokes;
336 unsigned int tr_reserved;
338 struct gfs2_holder tr_t_gh;
342 unsigned int tr_num_buf;
343 unsigned int tr_num_buf_new;
344 unsigned int tr_num_databuf_new;
345 unsigned int tr_num_buf_rm;
346 unsigned int tr_num_databuf_rm;
347 struct list_head tr_list_buf;
349 unsigned int tr_num_revoke;
350 unsigned int tr_num_revoke_rm;
354 struct list_head ai_list;
356 unsigned int ai_first;
357 struct list_head ai_ail1_list;
358 struct list_head ai_ail2_list;
364 struct list_head jd_list;
366 struct inode *jd_inode;
370 unsigned int jd_blocks;
373 struct gfs2_statfs_change_host {
379 #define GFS2_GLOCKD_DEFAULT 1
380 #define GFS2_GLOCKD_MAX 16
382 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
383 #define GFS2_QUOTA_OFF 0
384 #define GFS2_QUOTA_ACCOUNT 1
385 #define GFS2_QUOTA_ON 2
387 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
388 #define GFS2_DATA_WRITEBACK 1
389 #define GFS2_DATA_ORDERED 2
392 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
393 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
394 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
395 int ar_spectator; /* Don't get a journal because we're always RO */
396 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
397 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
398 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
399 int ar_debug; /* Oops on errors instead of trying to be graceful */
400 int ar_upgrade; /* Upgrade ondisk/multihost format */
401 unsigned int ar_num_glockd; /* Number of glockd threads */
402 int ar_posix_acl; /* Enable posix acls */
403 int ar_quota; /* off/account/on */
404 int ar_suiddir; /* suiddir support */
405 int ar_data; /* ordered/writeback */
411 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
412 unsigned int gt_incore_log_blocks;
413 unsigned int gt_log_flush_secs;
415 unsigned int gt_recoverd_secs;
416 unsigned int gt_logd_secs;
417 unsigned int gt_quotad_secs;
419 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
420 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
421 unsigned int gt_quota_scale_num; /* Numerator */
422 unsigned int gt_quota_scale_den; /* Denominator */
423 unsigned int gt_quota_cache_secs;
424 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
425 unsigned int gt_atime_quantum; /* Min secs between atime updates */
426 unsigned int gt_new_files_jdata;
427 unsigned int gt_new_files_directio;
428 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
429 unsigned int gt_stall_secs; /* Detects trouble! */
430 unsigned int gt_complain_secs;
431 unsigned int gt_statfs_quantum;
432 unsigned int gt_statfs_slow;
436 SDF_JOURNAL_CHECKED = 0,
437 SDF_JOURNAL_LIVE = 1,
442 #define GFS2_FSNAME_LEN 256
444 struct gfs2_inum_host {
449 struct gfs2_sb_host {
455 u32 sb_multihost_format;
459 struct gfs2_inum_host sb_master_dir;
460 struct gfs2_inum_host sb_root_dir;
462 char sb_lockproto[GFS2_LOCKNAME_LEN];
463 char sb_locktable[GFS2_LOCKNAME_LEN];
467 struct super_block *sd_vfs;
468 struct super_block *sd_vfs_meta;
469 struct kobject sd_kobj;
470 unsigned long sd_flags; /* SDF_... */
471 struct gfs2_sb_host sd_sb;
473 /* Constants computed on mount */
477 u32 sd_diptrs; /* Number of pointers in a dinode */
478 u32 sd_inptrs; /* Number of pointers in a indirect block */
479 u32 sd_jbsize; /* Size of a journaled data block */
480 u32 sd_hash_bsize; /* sizeof(exhash block) */
481 u32 sd_hash_bsize_shift;
482 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
484 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
485 u32 sd_max_height; /* Max height of a file's metadata tree */
486 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
487 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
488 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
490 struct gfs2_args sd_args; /* Mount arguments */
491 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
495 struct lm_lockstruct sd_lockstruct;
496 struct list_head sd_reclaim_list;
497 spinlock_t sd_reclaim_lock;
498 wait_queue_head_t sd_reclaim_wq;
499 atomic_t sd_reclaim_count;
500 struct gfs2_holder sd_live_gh;
501 struct gfs2_glock *sd_rename_gl;
502 struct gfs2_glock *sd_trans_gl;
506 struct inode *sd_master_dir;
507 struct inode *sd_jindex;
508 struct inode *sd_inum_inode;
509 struct inode *sd_statfs_inode;
510 struct inode *sd_ir_inode;
511 struct inode *sd_sc_inode;
512 struct inode *sd_qc_inode;
513 struct inode *sd_rindex;
514 struct inode *sd_quota_inode;
518 struct mutex sd_inum_mutex;
522 spinlock_t sd_statfs_spin;
523 struct mutex sd_statfs_mutex;
524 struct gfs2_statfs_change_host sd_statfs_master;
525 struct gfs2_statfs_change_host sd_statfs_local;
526 unsigned long sd_statfs_sync_time;
528 /* Resource group stuff */
531 spinlock_t sd_rindex_spin;
532 struct mutex sd_rindex_mutex;
533 struct list_head sd_rindex_list;
534 struct list_head sd_rindex_mru_list;
535 struct list_head sd_rindex_recent_list;
536 struct gfs2_rgrpd *sd_rindex_forward;
537 unsigned int sd_rgrps;
539 /* Journal index stuff */
541 struct list_head sd_jindex_list;
542 spinlock_t sd_jindex_spin;
543 struct mutex sd_jindex_mutex;
544 unsigned int sd_journals;
545 unsigned long sd_jindex_refresh_time;
547 struct gfs2_jdesc *sd_jdesc;
548 struct gfs2_holder sd_journal_gh;
549 struct gfs2_holder sd_jinode_gh;
551 struct gfs2_holder sd_ir_gh;
552 struct gfs2_holder sd_sc_gh;
553 struct gfs2_holder sd_qc_gh;
557 struct task_struct *sd_recoverd_process;
558 struct task_struct *sd_logd_process;
559 struct task_struct *sd_quotad_process;
560 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
561 unsigned int sd_glockd_num;
565 struct list_head sd_quota_list;
566 atomic_t sd_quota_count;
567 spinlock_t sd_quota_spin;
568 struct mutex sd_quota_mutex;
570 unsigned int sd_quota_slots;
571 unsigned int sd_quota_chunks;
572 unsigned char **sd_quota_bitmap;
574 u64 sd_quota_sync_gen;
575 unsigned long sd_quota_sync_time;
579 spinlock_t sd_log_lock;
581 unsigned int sd_log_blks_reserved;
582 unsigned int sd_log_commited_buf;
583 unsigned int sd_log_commited_databuf;
584 unsigned int sd_log_commited_revoke;
586 unsigned int sd_log_num_buf;
587 unsigned int sd_log_num_revoke;
588 unsigned int sd_log_num_rg;
589 unsigned int sd_log_num_databuf;
591 struct list_head sd_log_le_buf;
592 struct list_head sd_log_le_revoke;
593 struct list_head sd_log_le_rg;
594 struct list_head sd_log_le_databuf;
595 struct list_head sd_log_le_ordered;
597 atomic_t sd_log_blks_free;
598 struct mutex sd_log_reserve_mutex;
601 unsigned int sd_log_head;
602 unsigned int sd_log_tail;
605 unsigned long sd_log_flush_time;
606 struct rw_semaphore sd_log_flush_lock;
607 atomic_t sd_log_in_flight;
608 wait_queue_head_t sd_log_flush_wait;
610 unsigned int sd_log_flush_head;
611 u64 sd_log_flush_wrapped;
613 struct list_head sd_ail1_list;
614 struct list_head sd_ail2_list;
619 struct list_head sd_revoke_list;
620 unsigned int sd_replay_tail;
622 unsigned int sd_found_blocks;
623 unsigned int sd_found_revokes;
624 unsigned int sd_replayed_blocks;
626 /* For quiescing the filesystem */
628 struct gfs2_holder sd_freeze_gh;
629 struct mutex sd_freeze_lock;
630 unsigned int sd_freeze_count;
634 atomic_t sd_glock_count;
635 atomic_t sd_glock_held_count;
636 atomic_t sd_inode_count;
637 atomic_t sd_reclaimed;
639 char sd_fsname[GFS2_FSNAME_LEN];
640 char sd_table_name[GFS2_FSNAME_LEN];
641 char sd_proto_name[GFS2_FSNAME_LEN];
645 unsigned long sd_last_warning;
646 struct vfsmount *sd_gfs2mnt;
647 struct dentry *debugfs_dir; /* debugfs directory */
648 struct dentry *debugfs_dentry_glocks; /* for debugfs */
651 #endif /* __INCORE_DOT_H__ */