2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2007 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_inval) (struct gfs2_glock *gl, int flags);
135 int (*go_demote_ok) (struct gfs2_glock *gl);
136 int (*go_lock) (struct gfs2_holder *gh);
137 void (*go_unlock) (struct gfs2_holder *gh);
139 const unsigned long go_min_hold_time;
151 struct list_head gh_list;
153 struct gfs2_glock *gh_gl;
155 unsigned int gh_state;
159 unsigned long gh_iflags;
167 GLF_PENDING_DEMOTE = 4,
169 GLF_DEMOTE_IN_PROGRESS = 6,
174 struct hlist_node gl_list;
175 unsigned long gl_flags; /* GLF_... */
176 struct lm_lockname gl_name;
181 unsigned int gl_state;
182 unsigned int gl_hash;
183 unsigned int gl_demote_state; /* state requested by remote node */
184 unsigned long gl_demote_time; /* time of first demote request */
187 struct list_head gl_holders;
188 struct list_head gl_waiters1; /* HIF_MUTEX */
189 struct list_head gl_waiters3; /* HIF_PROMOTE */
190 int gl_waiters2; /* GIF_DEMOTE */
192 const struct gfs2_glock_operations *gl_ops;
194 struct gfs2_holder *gl_req_gh;
195 gfs2_glop_bh_t gl_req_bh;
199 atomic_t gl_lvb_count;
202 unsigned long gl_stamp;
203 unsigned long gl_tchange;
206 struct list_head gl_reclaim;
208 struct gfs2_sbd *gl_sbd;
210 struct inode *gl_aspace;
211 struct list_head gl_ail_list;
212 atomic_t gl_ail_count;
213 struct delayed_work gl_work;
219 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
220 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
221 unsigned int al_qd_num;
223 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
224 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
226 /* Filled in by gfs2_inplace_reserve() */
228 unsigned int al_line;
230 struct gfs2_holder al_ri_gh;
231 struct gfs2_holder al_rgd_gh;
232 struct gfs2_rgrpd *al_rgd;
242 struct gfs2_dinode_host {
243 u64 di_size; /* number of bytes in file */
244 u64 di_blocks; /* number of blocks in file */
245 u64 di_goal_meta; /* rgrp to alloc from next */
246 u64 di_goal_data; /* data block goal */
247 u64 di_generation; /* generation number for NFS */
248 u32 di_flags; /* GFS2_DIF_... */
249 u16 di_height; /* height of metadata */
250 /* These only apply to directories */
251 u16 di_depth; /* Number of bits in the table */
252 u32 di_entries; /* The number of entries in the directory */
253 u64 di_eattr; /* extended attribute block number */
257 struct inode i_inode;
260 unsigned long i_flags; /* GIF_... */
262 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
264 struct gfs2_glock *i_gl; /* Move into i_gh? */
265 struct gfs2_holder i_iopen_gh;
266 struct gfs2_holder i_gh; /* for prepare/commit_write only */
267 struct gfs2_alloc i_alloc;
271 struct rw_semaphore i_rw_mutex;
275 * Since i_inode is the first element of struct gfs2_inode,
276 * this is effectively a cast.
278 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
280 return container_of(inode, struct gfs2_inode, i_inode);
283 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
285 return inode->i_sb->s_fs_info;
289 struct mutex f_fl_mutex;
290 struct gfs2_holder f_fl_gh;
293 struct gfs2_revoke_replay {
294 struct list_head rr_list;
296 unsigned int rr_where;
305 struct gfs2_quota_data {
306 struct list_head qd_list;
307 unsigned int qd_count;
310 unsigned long qd_flags; /* QDF_... */
315 unsigned int qd_slot;
316 unsigned int qd_slot_count;
318 struct buffer_head *qd_bh;
319 struct gfs2_quota_change *qd_bh_qc;
320 unsigned int qd_bh_count;
322 struct gfs2_glock *qd_gl;
323 struct gfs2_quota_lvb qd_qb;
326 unsigned long qd_last_warn;
327 unsigned long qd_last_touched;
333 unsigned int tr_blocks;
334 unsigned int tr_revokes;
335 unsigned int tr_reserved;
337 struct gfs2_holder tr_t_gh;
341 unsigned int tr_num_buf;
342 unsigned int tr_num_buf_new;
343 unsigned int tr_num_databuf_new;
344 unsigned int tr_num_buf_rm;
345 unsigned int tr_num_databuf_rm;
346 struct list_head tr_list_buf;
348 unsigned int tr_num_revoke;
349 unsigned int tr_num_revoke_rm;
353 struct list_head ai_list;
355 unsigned int ai_first;
356 struct list_head ai_ail1_list;
357 struct list_head ai_ail2_list;
362 struct gfs2_journal_extent {
363 struct list_head extent_list;
365 unsigned int lblock; /* First logical block */
366 u64 dblock; /* First disk block */
371 struct list_head jd_list;
372 struct list_head extent_list;
374 struct inode *jd_inode;
378 unsigned int jd_blocks;
381 struct gfs2_statfs_change_host {
387 #define GFS2_GLOCKD_DEFAULT 1
388 #define GFS2_GLOCKD_MAX 16
390 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
391 #define GFS2_QUOTA_OFF 0
392 #define GFS2_QUOTA_ACCOUNT 1
393 #define GFS2_QUOTA_ON 2
395 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
396 #define GFS2_DATA_WRITEBACK 1
397 #define GFS2_DATA_ORDERED 2
400 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
401 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
402 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
403 int ar_spectator; /* Don't get a journal because we're always RO */
404 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
405 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
406 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
407 int ar_debug; /* Oops on errors instead of trying to be graceful */
408 int ar_upgrade; /* Upgrade ondisk/multihost format */
409 unsigned int ar_num_glockd; /* Number of glockd threads */
410 int ar_posix_acl; /* Enable posix acls */
411 int ar_quota; /* off/account/on */
412 int ar_suiddir; /* suiddir support */
413 int ar_data; /* ordered/writeback */
419 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
420 unsigned int gt_incore_log_blocks;
421 unsigned int gt_log_flush_secs;
423 unsigned int gt_recoverd_secs;
424 unsigned int gt_logd_secs;
425 unsigned int gt_quotad_secs;
427 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
428 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
429 unsigned int gt_quota_scale_num; /* Numerator */
430 unsigned int gt_quota_scale_den; /* Denominator */
431 unsigned int gt_quota_cache_secs;
432 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
433 unsigned int gt_atime_quantum; /* Min secs between atime updates */
434 unsigned int gt_new_files_jdata;
435 unsigned int gt_new_files_directio;
436 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
437 unsigned int gt_stall_secs; /* Detects trouble! */
438 unsigned int gt_complain_secs;
439 unsigned int gt_statfs_quantum;
440 unsigned int gt_statfs_slow;
444 SDF_JOURNAL_CHECKED = 0,
445 SDF_JOURNAL_LIVE = 1,
450 #define GFS2_FSNAME_LEN 256
452 struct gfs2_inum_host {
457 struct gfs2_sb_host {
463 u32 sb_multihost_format;
467 struct gfs2_inum_host sb_master_dir;
468 struct gfs2_inum_host sb_root_dir;
470 char sb_lockproto[GFS2_LOCKNAME_LEN];
471 char sb_locktable[GFS2_LOCKNAME_LEN];
475 struct super_block *sd_vfs;
476 struct super_block *sd_vfs_meta;
477 struct kobject sd_kobj;
478 unsigned long sd_flags; /* SDF_... */
479 struct gfs2_sb_host sd_sb;
481 /* Constants computed on mount */
485 u32 sd_diptrs; /* Number of pointers in a dinode */
486 u32 sd_inptrs; /* Number of pointers in a indirect block */
487 u32 sd_jbsize; /* Size of a journaled data block */
488 u32 sd_hash_bsize; /* sizeof(exhash block) */
489 u32 sd_hash_bsize_shift;
490 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
492 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
493 u32 sd_max_height; /* Max height of a file's metadata tree */
494 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
495 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
496 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
498 struct gfs2_args sd_args; /* Mount arguments */
499 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
503 struct lm_lockstruct sd_lockstruct;
504 struct list_head sd_reclaim_list;
505 spinlock_t sd_reclaim_lock;
506 wait_queue_head_t sd_reclaim_wq;
507 atomic_t sd_reclaim_count;
508 struct gfs2_holder sd_live_gh;
509 struct gfs2_glock *sd_rename_gl;
510 struct gfs2_glock *sd_trans_gl;
514 struct inode *sd_master_dir;
515 struct inode *sd_jindex;
516 struct inode *sd_inum_inode;
517 struct inode *sd_statfs_inode;
518 struct inode *sd_ir_inode;
519 struct inode *sd_sc_inode;
520 struct inode *sd_qc_inode;
521 struct inode *sd_rindex;
522 struct inode *sd_quota_inode;
526 struct mutex sd_inum_mutex;
530 spinlock_t sd_statfs_spin;
531 struct gfs2_statfs_change_host sd_statfs_master;
532 struct gfs2_statfs_change_host sd_statfs_local;
533 unsigned long sd_statfs_sync_time;
535 /* Resource group stuff */
538 spinlock_t sd_rindex_spin;
539 struct mutex sd_rindex_mutex;
540 struct list_head sd_rindex_list;
541 struct list_head sd_rindex_mru_list;
542 struct list_head sd_rindex_recent_list;
543 struct gfs2_rgrpd *sd_rindex_forward;
544 unsigned int sd_rgrps;
546 /* Journal index stuff */
548 struct list_head sd_jindex_list;
549 spinlock_t sd_jindex_spin;
550 struct mutex sd_jindex_mutex;
551 unsigned int sd_journals;
552 unsigned long sd_jindex_refresh_time;
554 struct gfs2_jdesc *sd_jdesc;
555 struct gfs2_holder sd_journal_gh;
556 struct gfs2_holder sd_jinode_gh;
558 struct gfs2_holder sd_ir_gh;
559 struct gfs2_holder sd_sc_gh;
560 struct gfs2_holder sd_qc_gh;
564 struct task_struct *sd_recoverd_process;
565 struct task_struct *sd_logd_process;
566 struct task_struct *sd_quotad_process;
567 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
568 unsigned int sd_glockd_num;
572 struct list_head sd_quota_list;
573 atomic_t sd_quota_count;
574 spinlock_t sd_quota_spin;
575 struct mutex sd_quota_mutex;
577 unsigned int sd_quota_slots;
578 unsigned int sd_quota_chunks;
579 unsigned char **sd_quota_bitmap;
581 u64 sd_quota_sync_gen;
582 unsigned long sd_quota_sync_time;
586 spinlock_t sd_log_lock;
588 unsigned int sd_log_blks_reserved;
589 unsigned int sd_log_commited_buf;
590 unsigned int sd_log_commited_databuf;
591 unsigned int sd_log_commited_revoke;
593 unsigned int sd_log_num_buf;
594 unsigned int sd_log_num_revoke;
595 unsigned int sd_log_num_rg;
596 unsigned int sd_log_num_databuf;
598 struct list_head sd_log_le_buf;
599 struct list_head sd_log_le_revoke;
600 struct list_head sd_log_le_rg;
601 struct list_head sd_log_le_databuf;
602 struct list_head sd_log_le_ordered;
604 atomic_t sd_log_blks_free;
605 struct mutex sd_log_reserve_mutex;
608 unsigned int sd_log_head;
609 unsigned int sd_log_tail;
612 unsigned long sd_log_flush_time;
613 struct rw_semaphore sd_log_flush_lock;
614 atomic_t sd_log_in_flight;
615 wait_queue_head_t sd_log_flush_wait;
617 unsigned int sd_log_flush_head;
618 u64 sd_log_flush_wrapped;
620 struct list_head sd_ail1_list;
621 struct list_head sd_ail2_list;
626 struct list_head sd_revoke_list;
627 unsigned int sd_replay_tail;
629 unsigned int sd_found_blocks;
630 unsigned int sd_found_revokes;
631 unsigned int sd_replayed_blocks;
633 /* For quiescing the filesystem */
635 struct gfs2_holder sd_freeze_gh;
636 struct mutex sd_freeze_lock;
637 unsigned int sd_freeze_count;
641 atomic_t sd_glock_count;
642 atomic_t sd_glock_held_count;
643 atomic_t sd_inode_count;
644 atomic_t sd_reclaimed;
646 char sd_fsname[GFS2_FSNAME_LEN];
647 char sd_table_name[GFS2_FSNAME_LEN];
648 char sd_proto_name[GFS2_FSNAME_LEN];
652 unsigned long sd_last_warning;
653 struct vfsmount *sd_gfs2mnt;
654 struct dentry *debugfs_dir; /* debugfs directory */
655 struct dentry *debugfs_dentry_glocks; /* for debugfs */
658 #endif /* __INCORE_DOT_H__ */