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;
117 struct list_head bd_list_tr;
118 struct gfs2_log_element bd_le;
120 struct gfs2_ail *bd_ail;
121 struct list_head bd_ail_st_list;
122 struct list_head bd_ail_gl_list;
125 struct gfs2_glock_operations {
126 void (*go_xmote_th) (struct gfs2_glock *gl);
127 void (*go_xmote_bh) (struct gfs2_glock *gl);
128 void (*go_drop_th) (struct gfs2_glock *gl);
129 void (*go_inval) (struct gfs2_glock *gl, int flags);
130 int (*go_demote_ok) (struct gfs2_glock *gl);
131 int (*go_lock) (struct gfs2_holder *gh);
132 void (*go_unlock) (struct gfs2_holder *gh);
134 const unsigned long go_min_hold_time;
150 struct list_head gh_list;
152 struct gfs2_glock *gh_gl;
154 unsigned int gh_state;
158 unsigned long gh_iflags;
166 GLF_PENDING_DEMOTE = 4,
171 struct hlist_node gl_list;
172 unsigned long gl_flags; /* GLF_... */
173 struct lm_lockname gl_name;
178 unsigned int gl_state;
179 unsigned int gl_hash;
180 unsigned int gl_demote_state; /* state requested by remote node */
181 unsigned long gl_demote_time; /* time of first demote request */
184 struct list_head gl_holders;
185 struct list_head gl_waiters1; /* HIF_MUTEX */
186 struct list_head gl_waiters3; /* HIF_PROMOTE */
188 const struct gfs2_glock_operations *gl_ops;
190 struct gfs2_holder *gl_req_gh;
191 gfs2_glop_bh_t gl_req_bh;
195 atomic_t gl_lvb_count;
198 unsigned long gl_stamp;
199 unsigned long gl_tchange;
202 struct list_head gl_reclaim;
204 struct gfs2_sbd *gl_sbd;
206 struct inode *gl_aspace;
207 struct gfs2_log_element gl_le;
208 struct list_head gl_ail_list;
209 atomic_t gl_ail_count;
210 struct delayed_work gl_work;
216 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
217 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
218 unsigned int al_qd_num;
220 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
221 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
223 /* Filled in by gfs2_inplace_reserve() */
225 unsigned int al_line;
227 struct gfs2_holder al_ri_gh;
228 struct gfs2_holder al_rgd_gh;
229 struct gfs2_rgrpd *al_rgd;
240 struct gfs2_dinode_host {
241 u64 di_size; /* number of bytes in file */
242 u64 di_blocks; /* number of blocks in file */
243 u64 di_goal_meta; /* rgrp to alloc from next */
244 u64 di_goal_data; /* data block goal */
245 u64 di_generation; /* generation number for NFS */
246 u32 di_flags; /* GFS2_DIF_... */
247 u16 di_height; /* height of metadata */
248 /* These only apply to directories */
249 u16 di_depth; /* Number of bits in the table */
250 u32 di_entries; /* The number of entries in the directory */
251 u64 di_eattr; /* extended attribute block number */
255 struct inode i_inode;
258 unsigned long i_flags; /* GIF_... */
260 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
262 struct gfs2_glock *i_gl; /* Move into i_gh? */
263 struct gfs2_holder i_iopen_gh;
264 struct gfs2_holder i_gh; /* for prepare/commit_write only */
265 struct gfs2_alloc i_alloc;
269 struct rw_semaphore i_rw_mutex;
270 unsigned long i_last_pfault;
272 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
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);
285 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
287 return inode->i_sb->s_fs_info;
291 GFF_DID_DIRECT_ALLOC = 0,
296 unsigned long f_flags; /* GFF_... */
297 struct mutex f_fl_mutex;
298 struct gfs2_holder f_fl_gh;
302 struct gfs2_log_element rv_le;
306 struct gfs2_revoke_replay {
307 struct list_head rr_list;
309 unsigned int rr_where;
318 struct gfs2_quota_data {
319 struct list_head qd_list;
320 unsigned int qd_count;
323 unsigned long qd_flags; /* QDF_... */
328 unsigned int qd_slot;
329 unsigned int qd_slot_count;
331 struct buffer_head *qd_bh;
332 struct gfs2_quota_change *qd_bh_qc;
333 unsigned int qd_bh_count;
335 struct gfs2_glock *qd_gl;
336 struct gfs2_quota_lvb qd_qb;
339 unsigned long qd_last_warn;
340 unsigned long qd_last_touched;
343 struct gfs2_log_buf {
344 struct list_head lb_list;
345 struct buffer_head *lb_bh;
346 struct buffer_head *lb_real;
352 unsigned int tr_blocks;
353 unsigned int tr_revokes;
354 unsigned int tr_reserved;
356 struct gfs2_holder tr_t_gh;
360 unsigned int tr_num_buf;
361 unsigned int tr_num_buf_new;
362 unsigned int tr_num_databuf_new;
363 unsigned int tr_num_buf_rm;
364 unsigned int tr_num_databuf_rm;
365 struct list_head tr_list_buf;
367 unsigned int tr_num_revoke;
368 unsigned int tr_num_revoke_rm;
372 struct list_head ai_list;
374 unsigned int ai_first;
375 struct list_head ai_ail1_list;
376 struct list_head ai_ail2_list;
382 struct list_head jd_list;
384 struct inode *jd_inode;
388 unsigned int jd_blocks;
391 struct gfs2_statfs_change_host {
397 #define GFS2_GLOCKD_DEFAULT 1
398 #define GFS2_GLOCKD_MAX 16
400 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
401 #define GFS2_QUOTA_OFF 0
402 #define GFS2_QUOTA_ACCOUNT 1
403 #define GFS2_QUOTA_ON 2
405 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
406 #define GFS2_DATA_WRITEBACK 1
407 #define GFS2_DATA_ORDERED 2
410 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
411 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
412 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
413 int ar_spectator; /* Don't get a journal because we're always RO */
414 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
415 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
416 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
417 int ar_debug; /* Oops on errors instead of trying to be graceful */
418 int ar_upgrade; /* Upgrade ondisk/multihost format */
419 unsigned int ar_num_glockd; /* Number of glockd threads */
420 int ar_posix_acl; /* Enable posix acls */
421 int ar_quota; /* off/account/on */
422 int ar_suiddir; /* suiddir support */
423 int ar_data; /* ordered/writeback */
429 unsigned int gt_ilimit;
430 unsigned int gt_ilimit_tries;
431 unsigned int gt_ilimit_min;
432 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
433 unsigned int gt_incore_log_blocks;
434 unsigned int gt_log_flush_secs;
435 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
437 unsigned int gt_recoverd_secs;
438 unsigned int gt_logd_secs;
439 unsigned int gt_quotad_secs;
441 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
442 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
443 unsigned int gt_quota_scale_num; /* Numerator */
444 unsigned int gt_quota_scale_den; /* Denominator */
445 unsigned int gt_quota_cache_secs;
446 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
447 unsigned int gt_atime_quantum; /* Min secs between atime updates */
448 unsigned int gt_new_files_jdata;
449 unsigned int gt_new_files_directio;
450 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
451 unsigned int gt_lockdump_size;
452 unsigned int gt_stall_secs; /* Detects trouble! */
453 unsigned int gt_complain_secs;
454 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
455 unsigned int gt_statfs_quantum;
456 unsigned int gt_statfs_slow;
460 SDF_JOURNAL_CHECKED = 0,
461 SDF_JOURNAL_LIVE = 1,
466 #define GFS2_FSNAME_LEN 256
468 struct gfs2_inum_host {
473 struct gfs2_sb_host {
479 u32 sb_multihost_format;
483 struct gfs2_inum_host sb_master_dir;
484 struct gfs2_inum_host sb_root_dir;
486 char sb_lockproto[GFS2_LOCKNAME_LEN];
487 char sb_locktable[GFS2_LOCKNAME_LEN];
491 struct super_block *sd_vfs;
492 struct super_block *sd_vfs_meta;
493 struct kobject sd_kobj;
494 unsigned long sd_flags; /* SDF_... */
495 struct gfs2_sb_host sd_sb;
497 /* Constants computed on mount */
501 u32 sd_diptrs; /* Number of pointers in a dinode */
502 u32 sd_inptrs; /* Number of pointers in a indirect block */
503 u32 sd_jbsize; /* Size of a journaled data block */
504 u32 sd_hash_bsize; /* sizeof(exhash block) */
505 u32 sd_hash_bsize_shift;
506 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
508 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
509 u32 sd_max_height; /* Max height of a file's metadata tree */
510 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
511 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
512 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
514 struct gfs2_args sd_args; /* Mount arguments */
515 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
519 struct lm_lockstruct sd_lockstruct;
520 struct list_head sd_reclaim_list;
521 spinlock_t sd_reclaim_lock;
522 wait_queue_head_t sd_reclaim_wq;
523 atomic_t sd_reclaim_count;
524 struct gfs2_holder sd_live_gh;
525 struct gfs2_glock *sd_rename_gl;
526 struct gfs2_glock *sd_trans_gl;
530 struct inode *sd_master_dir;
531 struct inode *sd_jindex;
532 struct inode *sd_inum_inode;
533 struct inode *sd_statfs_inode;
534 struct inode *sd_ir_inode;
535 struct inode *sd_sc_inode;
536 struct inode *sd_qc_inode;
537 struct inode *sd_rindex;
538 struct inode *sd_quota_inode;
542 struct mutex sd_inum_mutex;
546 spinlock_t sd_statfs_spin;
547 struct mutex sd_statfs_mutex;
548 struct gfs2_statfs_change_host sd_statfs_master;
549 struct gfs2_statfs_change_host sd_statfs_local;
550 unsigned long sd_statfs_sync_time;
552 /* Resource group stuff */
555 spinlock_t sd_rindex_spin;
556 struct mutex sd_rindex_mutex;
557 struct list_head sd_rindex_list;
558 struct list_head sd_rindex_mru_list;
559 struct list_head sd_rindex_recent_list;
560 struct gfs2_rgrpd *sd_rindex_forward;
561 unsigned int sd_rgrps;
563 /* Journal index stuff */
565 struct list_head sd_jindex_list;
566 spinlock_t sd_jindex_spin;
567 struct mutex sd_jindex_mutex;
568 unsigned int sd_journals;
569 unsigned long sd_jindex_refresh_time;
571 struct gfs2_jdesc *sd_jdesc;
572 struct gfs2_holder sd_journal_gh;
573 struct gfs2_holder sd_jinode_gh;
575 struct gfs2_holder sd_ir_gh;
576 struct gfs2_holder sd_sc_gh;
577 struct gfs2_holder sd_qc_gh;
581 struct task_struct *sd_recoverd_process;
582 struct task_struct *sd_logd_process;
583 struct task_struct *sd_quotad_process;
584 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
585 unsigned int sd_glockd_num;
589 struct list_head sd_quota_list;
590 atomic_t sd_quota_count;
591 spinlock_t sd_quota_spin;
592 struct mutex sd_quota_mutex;
594 unsigned int sd_quota_slots;
595 unsigned int sd_quota_chunks;
596 unsigned char **sd_quota_bitmap;
598 u64 sd_quota_sync_gen;
599 unsigned long sd_quota_sync_time;
603 spinlock_t sd_log_lock;
605 unsigned int sd_log_blks_reserved;
606 unsigned int sd_log_commited_buf;
607 unsigned int sd_log_commited_databuf;
608 unsigned int sd_log_commited_revoke;
610 unsigned int sd_log_num_gl;
611 unsigned int sd_log_num_buf;
612 unsigned int sd_log_num_revoke;
613 unsigned int sd_log_num_rg;
614 unsigned int sd_log_num_databuf;
616 struct list_head sd_log_le_gl;
617 struct list_head sd_log_le_buf;
618 struct list_head sd_log_le_revoke;
619 struct list_head sd_log_le_rg;
620 struct list_head sd_log_le_databuf;
621 struct list_head sd_log_le_ordered;
623 unsigned int sd_log_blks_free;
624 struct mutex sd_log_reserve_mutex;
627 unsigned int sd_log_head;
628 unsigned int sd_log_tail;
631 unsigned long sd_log_flush_time;
632 struct rw_semaphore sd_log_flush_lock;
633 struct list_head sd_log_flush_list;
635 unsigned int sd_log_flush_head;
636 u64 sd_log_flush_wrapped;
638 struct list_head sd_ail1_list;
639 struct list_head sd_ail2_list;
644 struct list_head sd_revoke_list;
645 unsigned int sd_replay_tail;
647 unsigned int sd_found_blocks;
648 unsigned int sd_found_revokes;
649 unsigned int sd_replayed_blocks;
651 /* For quiescing the filesystem */
653 struct gfs2_holder sd_freeze_gh;
654 struct mutex sd_freeze_lock;
655 unsigned int sd_freeze_count;
659 atomic_t sd_glock_count;
660 atomic_t sd_glock_held_count;
661 atomic_t sd_inode_count;
662 atomic_t sd_reclaimed;
664 char sd_fsname[GFS2_FSNAME_LEN];
665 char sd_table_name[GFS2_FSNAME_LEN];
666 char sd_proto_name[GFS2_FSNAME_LEN];
670 unsigned long sd_last_warning;
671 struct vfsmount *sd_gfs2mnt;
672 struct dentry *debugfs_dir; /* debugfs directory */
673 struct dentry *debugfs_dentry_glocks; /* for debugfs */
676 #endif /* __INCORE_DOT_H__ */