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;
156 struct list_head gh_list;
158 struct gfs2_glock *gh_gl;
160 unsigned int gh_state;
164 unsigned long gh_iflags;
172 GLF_PENDING_DEMOTE = 4,
177 struct hlist_node gl_list;
178 unsigned long gl_flags; /* GLF_... */
179 struct lm_lockname gl_name;
184 unsigned int gl_state;
185 unsigned int gl_hash;
186 unsigned int gl_demote_state; /* state requested by remote node */
187 unsigned long gl_demote_time; /* time of first demote request */
190 struct list_head gl_holders;
191 struct list_head gl_waiters1; /* HIF_MUTEX */
192 struct list_head gl_waiters3; /* HIF_PROMOTE */
194 const struct gfs2_glock_operations *gl_ops;
196 struct gfs2_holder *gl_req_gh;
197 gfs2_glop_bh_t gl_req_bh;
201 atomic_t gl_lvb_count;
204 unsigned long gl_stamp;
205 unsigned long gl_tchange;
208 struct list_head gl_reclaim;
210 struct gfs2_sbd *gl_sbd;
212 struct inode *gl_aspace;
213 struct gfs2_log_element gl_le;
214 struct list_head gl_ail_list;
215 atomic_t gl_ail_count;
216 struct delayed_work gl_work;
222 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
223 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
224 unsigned int al_qd_num;
226 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
227 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
229 /* Filled in by gfs2_inplace_reserve() */
231 unsigned int al_line;
233 struct gfs2_holder al_ri_gh;
234 struct gfs2_holder al_rgd_gh;
235 struct gfs2_rgrpd *al_rgd;
246 struct gfs2_dinode_host {
247 u64 di_size; /* number of bytes in file */
248 u64 di_blocks; /* number of blocks in file */
249 u64 di_goal_meta; /* rgrp to alloc from next */
250 u64 di_goal_data; /* data block goal */
251 u64 di_generation; /* generation number for NFS */
252 u32 di_flags; /* GFS2_DIF_... */
253 u16 di_height; /* height of metadata */
254 /* These only apply to directories */
255 u16 di_depth; /* Number of bits in the table */
256 u32 di_entries; /* The number of entries in the directory */
257 u64 di_eattr; /* extended attribute block number */
261 struct inode i_inode;
264 unsigned long i_flags; /* GIF_... */
266 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
268 struct gfs2_glock *i_gl; /* Move into i_gh? */
269 struct gfs2_holder i_iopen_gh;
270 struct gfs2_holder i_gh; /* for prepare/commit_write only */
271 struct gfs2_alloc i_alloc;
275 struct rw_semaphore i_rw_mutex;
276 unsigned long i_last_pfault;
278 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
282 * Since i_inode is the first element of struct gfs2_inode,
283 * this is effectively a cast.
285 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
287 return container_of(inode, struct gfs2_inode, i_inode);
291 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
293 return inode->i_sb->s_fs_info;
297 GFF_DID_DIRECT_ALLOC = 0,
302 unsigned long f_flags; /* GFF_... */
303 struct mutex f_fl_mutex;
304 struct gfs2_holder f_fl_gh;
307 struct gfs2_revoke_replay {
308 struct list_head rr_list;
310 unsigned int rr_where;
319 struct gfs2_quota_data {
320 struct list_head qd_list;
321 unsigned int qd_count;
324 unsigned long qd_flags; /* QDF_... */
329 unsigned int qd_slot;
330 unsigned int qd_slot_count;
332 struct buffer_head *qd_bh;
333 struct gfs2_quota_change *qd_bh_qc;
334 unsigned int qd_bh_count;
336 struct gfs2_glock *qd_gl;
337 struct gfs2_quota_lvb qd_qb;
340 unsigned long qd_last_warn;
341 unsigned long qd_last_touched;
347 unsigned int tr_blocks;
348 unsigned int tr_revokes;
349 unsigned int tr_reserved;
351 struct gfs2_holder tr_t_gh;
355 unsigned int tr_num_buf;
356 unsigned int tr_num_buf_new;
357 unsigned int tr_num_databuf_new;
358 unsigned int tr_num_buf_rm;
359 unsigned int tr_num_databuf_rm;
360 struct list_head tr_list_buf;
362 unsigned int tr_num_revoke;
363 unsigned int tr_num_revoke_rm;
367 struct list_head ai_list;
369 unsigned int ai_first;
370 struct list_head ai_ail1_list;
371 struct list_head ai_ail2_list;
377 struct list_head jd_list;
379 struct inode *jd_inode;
383 unsigned int jd_blocks;
386 struct gfs2_statfs_change_host {
392 #define GFS2_GLOCKD_DEFAULT 1
393 #define GFS2_GLOCKD_MAX 16
395 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
396 #define GFS2_QUOTA_OFF 0
397 #define GFS2_QUOTA_ACCOUNT 1
398 #define GFS2_QUOTA_ON 2
400 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
401 #define GFS2_DATA_WRITEBACK 1
402 #define GFS2_DATA_ORDERED 2
405 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
406 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
407 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
408 int ar_spectator; /* Don't get a journal because we're always RO */
409 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
410 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
411 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
412 int ar_debug; /* Oops on errors instead of trying to be graceful */
413 int ar_upgrade; /* Upgrade ondisk/multihost format */
414 unsigned int ar_num_glockd; /* Number of glockd threads */
415 int ar_posix_acl; /* Enable posix acls */
416 int ar_quota; /* off/account/on */
417 int ar_suiddir; /* suiddir support */
418 int ar_data; /* ordered/writeback */
424 unsigned int gt_ilimit;
425 unsigned int gt_ilimit_tries;
426 unsigned int gt_ilimit_min;
427 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
428 unsigned int gt_incore_log_blocks;
429 unsigned int gt_log_flush_secs;
430 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
432 unsigned int gt_recoverd_secs;
433 unsigned int gt_logd_secs;
434 unsigned int gt_quotad_secs;
436 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
437 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
438 unsigned int gt_quota_scale_num; /* Numerator */
439 unsigned int gt_quota_scale_den; /* Denominator */
440 unsigned int gt_quota_cache_secs;
441 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
442 unsigned int gt_atime_quantum; /* Min secs between atime updates */
443 unsigned int gt_new_files_jdata;
444 unsigned int gt_new_files_directio;
445 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
446 unsigned int gt_lockdump_size;
447 unsigned int gt_stall_secs; /* Detects trouble! */
448 unsigned int gt_complain_secs;
449 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
450 unsigned int gt_statfs_quantum;
451 unsigned int gt_statfs_slow;
455 SDF_JOURNAL_CHECKED = 0,
456 SDF_JOURNAL_LIVE = 1,
461 #define GFS2_FSNAME_LEN 256
463 struct gfs2_inum_host {
468 struct gfs2_sb_host {
474 u32 sb_multihost_format;
478 struct gfs2_inum_host sb_master_dir;
479 struct gfs2_inum_host sb_root_dir;
481 char sb_lockproto[GFS2_LOCKNAME_LEN];
482 char sb_locktable[GFS2_LOCKNAME_LEN];
486 struct super_block *sd_vfs;
487 struct super_block *sd_vfs_meta;
488 struct kobject sd_kobj;
489 unsigned long sd_flags; /* SDF_... */
490 struct gfs2_sb_host sd_sb;
492 /* Constants computed on mount */
496 u32 sd_diptrs; /* Number of pointers in a dinode */
497 u32 sd_inptrs; /* Number of pointers in a indirect block */
498 u32 sd_jbsize; /* Size of a journaled data block */
499 u32 sd_hash_bsize; /* sizeof(exhash block) */
500 u32 sd_hash_bsize_shift;
501 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
503 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
504 u32 sd_max_height; /* Max height of a file's metadata tree */
505 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
506 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
507 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
509 struct gfs2_args sd_args; /* Mount arguments */
510 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
514 struct lm_lockstruct sd_lockstruct;
515 struct list_head sd_reclaim_list;
516 spinlock_t sd_reclaim_lock;
517 wait_queue_head_t sd_reclaim_wq;
518 atomic_t sd_reclaim_count;
519 struct gfs2_holder sd_live_gh;
520 struct gfs2_glock *sd_rename_gl;
521 struct gfs2_glock *sd_trans_gl;
525 struct inode *sd_master_dir;
526 struct inode *sd_jindex;
527 struct inode *sd_inum_inode;
528 struct inode *sd_statfs_inode;
529 struct inode *sd_ir_inode;
530 struct inode *sd_sc_inode;
531 struct inode *sd_qc_inode;
532 struct inode *sd_rindex;
533 struct inode *sd_quota_inode;
537 struct mutex sd_inum_mutex;
541 spinlock_t sd_statfs_spin;
542 struct mutex sd_statfs_mutex;
543 struct gfs2_statfs_change_host sd_statfs_master;
544 struct gfs2_statfs_change_host sd_statfs_local;
545 unsigned long sd_statfs_sync_time;
547 /* Resource group stuff */
550 spinlock_t sd_rindex_spin;
551 struct mutex sd_rindex_mutex;
552 struct list_head sd_rindex_list;
553 struct list_head sd_rindex_mru_list;
554 struct list_head sd_rindex_recent_list;
555 struct gfs2_rgrpd *sd_rindex_forward;
556 unsigned int sd_rgrps;
558 /* Journal index stuff */
560 struct list_head sd_jindex_list;
561 spinlock_t sd_jindex_spin;
562 struct mutex sd_jindex_mutex;
563 unsigned int sd_journals;
564 unsigned long sd_jindex_refresh_time;
566 struct gfs2_jdesc *sd_jdesc;
567 struct gfs2_holder sd_journal_gh;
568 struct gfs2_holder sd_jinode_gh;
570 struct gfs2_holder sd_ir_gh;
571 struct gfs2_holder sd_sc_gh;
572 struct gfs2_holder sd_qc_gh;
576 struct task_struct *sd_recoverd_process;
577 struct task_struct *sd_logd_process;
578 struct task_struct *sd_quotad_process;
579 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
580 unsigned int sd_glockd_num;
584 struct list_head sd_quota_list;
585 atomic_t sd_quota_count;
586 spinlock_t sd_quota_spin;
587 struct mutex sd_quota_mutex;
589 unsigned int sd_quota_slots;
590 unsigned int sd_quota_chunks;
591 unsigned char **sd_quota_bitmap;
593 u64 sd_quota_sync_gen;
594 unsigned long sd_quota_sync_time;
598 spinlock_t sd_log_lock;
600 unsigned int sd_log_blks_reserved;
601 unsigned int sd_log_commited_buf;
602 unsigned int sd_log_commited_databuf;
603 unsigned int sd_log_commited_revoke;
605 unsigned int sd_log_num_gl;
606 unsigned int sd_log_num_buf;
607 unsigned int sd_log_num_revoke;
608 unsigned int sd_log_num_rg;
609 unsigned int sd_log_num_databuf;
611 struct list_head sd_log_le_gl;
612 struct list_head sd_log_le_buf;
613 struct list_head sd_log_le_revoke;
614 struct list_head sd_log_le_rg;
615 struct list_head sd_log_le_databuf;
616 struct list_head sd_log_le_ordered;
618 unsigned int sd_log_blks_free;
619 struct mutex sd_log_reserve_mutex;
622 unsigned int sd_log_head;
623 unsigned int sd_log_tail;
626 unsigned long sd_log_flush_time;
627 struct rw_semaphore sd_log_flush_lock;
628 atomic_t sd_log_in_flight;
629 wait_queue_head_t sd_log_flush_wait;
631 unsigned int sd_log_flush_head;
632 u64 sd_log_flush_wrapped;
634 struct list_head sd_ail1_list;
635 struct list_head sd_ail2_list;
640 struct list_head sd_revoke_list;
641 unsigned int sd_replay_tail;
643 unsigned int sd_found_blocks;
644 unsigned int sd_found_revokes;
645 unsigned int sd_replayed_blocks;
647 /* For quiescing the filesystem */
649 struct gfs2_holder sd_freeze_gh;
650 struct mutex sd_freeze_lock;
651 unsigned int sd_freeze_count;
655 atomic_t sd_glock_count;
656 atomic_t sd_glock_held_count;
657 atomic_t sd_inode_count;
658 atomic_t sd_reclaimed;
660 char sd_fsname[GFS2_FSNAME_LEN];
661 char sd_table_name[GFS2_FSNAME_LEN];
662 char sd_proto_name[GFS2_FSNAME_LEN];
666 unsigned long sd_last_warning;
667 struct vfsmount *sd_gfs2mnt;
668 struct dentry *debugfs_dir; /* debugfs directory */
669 struct dentry *debugfs_dentry_glocks; /* for debugfs */
672 #endif /* __INCORE_DOT_H__ */