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);
31 struct gfs2_log_header_host {
32 u64 lh_sequence; /* Sequence number of this transaction */
33 u32 lh_flags; /* GFS2_LOG_HEAD_... */
34 u32 lh_tail; /* Block number of log tail */
40 * Structure of operations that are associated with each
41 * type of element in the log.
44 struct gfs2_log_operations {
45 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
46 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
47 void (*lo_before_commit) (struct gfs2_sbd *sdp);
48 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
49 void (*lo_before_scan) (struct gfs2_jdesc *jd,
50 struct gfs2_log_header_host *head, int pass);
51 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
52 struct gfs2_log_descriptor *ld, __be64 *ptr,
54 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
58 struct gfs2_log_element {
59 struct list_head le_list;
60 const struct gfs2_log_operations *le_ops;
64 struct buffer_head *bi_bh;
71 struct gfs2_rgrp_host {
79 struct list_head rd_list; /* Link with superblock */
80 struct list_head rd_list_mru;
81 struct list_head rd_recent; /* Recently used rgrps */
82 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
83 u64 rd_addr; /* grp block disk address */
84 u64 rd_data0; /* first data location */
85 u32 rd_length; /* length of rgrp header in fs blocks */
86 u32 rd_data; /* num of data blocks in rgrp */
87 u32 rd_bitbytes; /* number of bytes in data bitmaps */
88 struct gfs2_rgrp_host rd_rg;
90 struct gfs2_bitmap *rd_bits;
91 unsigned int rd_bh_count;
92 struct mutex rd_mutex;
94 struct gfs2_log_element rd_le;
95 u32 rd_last_alloc_data;
96 u32 rd_last_alloc_meta;
97 struct gfs2_sbd *rd_sbd;
100 enum gfs2_state_bits {
101 BH_Pinned = BH_PrivateStart,
102 BH_Escaped = BH_PrivateStart + 1,
105 BUFFER_FNS(Pinned, pinned)
106 TAS_BUFFER_FNS(Pinned, pinned)
107 BUFFER_FNS(Escaped, escaped)
108 TAS_BUFFER_FNS(Escaped, escaped)
110 struct gfs2_bufdata {
111 struct buffer_head *bd_bh;
112 struct gfs2_glock *bd_gl;
114 struct list_head bd_list_tr;
115 struct gfs2_log_element bd_le;
117 struct gfs2_ail *bd_ail;
118 struct list_head bd_ail_st_list;
119 struct list_head bd_ail_gl_list;
122 struct gfs2_glock_operations {
123 void (*go_xmote_th) (struct gfs2_glock *gl);
124 void (*go_xmote_bh) (struct gfs2_glock *gl);
125 void (*go_drop_th) (struct gfs2_glock *gl);
126 void (*go_inval) (struct gfs2_glock *gl, int flags);
127 int (*go_demote_ok) (struct gfs2_glock *gl);
128 int (*go_lock) (struct gfs2_holder *gh);
129 void (*go_unlock) (struct gfs2_holder *gh);
146 struct list_head gh_list;
148 struct gfs2_glock *gh_gl;
150 unsigned int gh_state;
154 unsigned long gh_iflags;
166 struct hlist_node gl_list;
167 unsigned long gl_flags; /* GLF_... */
168 struct lm_lockname gl_name;
173 unsigned int gl_state;
174 unsigned int gl_hash;
175 unsigned int gl_demote_state; /* state requested by remote node */
176 unsigned long gl_demote_time; /* time of first demote request */
179 struct list_head gl_holders;
180 struct list_head gl_waiters1; /* HIF_MUTEX */
181 struct list_head gl_waiters3; /* HIF_PROMOTE */
183 const struct gfs2_glock_operations *gl_ops;
185 struct gfs2_holder *gl_req_gh;
186 gfs2_glop_bh_t gl_req_bh;
190 atomic_t gl_lvb_count;
193 unsigned long gl_stamp;
196 struct list_head gl_reclaim;
198 struct gfs2_sbd *gl_sbd;
200 struct inode *gl_aspace;
201 struct gfs2_log_element gl_le;
202 struct list_head gl_ail_list;
203 atomic_t gl_ail_count;
209 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
210 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
211 unsigned int al_qd_num;
213 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
214 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
216 /* Filled in by gfs2_inplace_reserve() */
218 unsigned int al_line;
220 struct gfs2_holder al_ri_gh;
221 struct gfs2_holder al_rgd_gh;
222 struct gfs2_rgrpd *al_rgd;
233 struct gfs2_dinode_host {
234 u64 di_size; /* number of bytes in file */
235 u64 di_blocks; /* number of blocks in file */
236 u64 di_goal_meta; /* rgrp to alloc from next */
237 u64 di_goal_data; /* data block goal */
238 u64 di_generation; /* generation number for NFS */
239 u32 di_flags; /* GFS2_DIF_... */
240 u16 di_height; /* height of metadata */
241 /* These only apply to directories */
242 u16 di_depth; /* Number of bits in the table */
243 u32 di_entries; /* The number of entries in the directory */
244 u64 di_eattr; /* extended attribute block number */
248 struct inode i_inode;
251 unsigned long i_flags; /* GIF_... */
253 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
255 struct gfs2_glock *i_gl; /* Move into i_gh? */
256 struct gfs2_holder i_iopen_gh;
257 struct gfs2_holder i_gh; /* for prepare/commit_write only */
258 struct gfs2_alloc i_alloc;
262 struct rw_semaphore i_rw_mutex;
263 unsigned long i_last_pfault;
265 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
269 * Since i_inode is the first element of struct gfs2_inode,
270 * this is effectively a cast.
272 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
274 return container_of(inode, struct gfs2_inode, i_inode);
278 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
280 return inode->i_sb->s_fs_info;
284 GFF_DID_DIRECT_ALLOC = 0,
289 unsigned long f_flags; /* GFF_... */
290 struct mutex f_fl_mutex;
291 struct gfs2_holder f_fl_gh;
295 struct gfs2_log_element rv_le;
299 struct gfs2_revoke_replay {
300 struct list_head rr_list;
302 unsigned int rr_where;
311 struct gfs2_quota_data {
312 struct list_head qd_list;
313 unsigned int qd_count;
316 unsigned long qd_flags; /* QDF_... */
321 unsigned int qd_slot;
322 unsigned int qd_slot_count;
324 struct buffer_head *qd_bh;
325 struct gfs2_quota_change *qd_bh_qc;
326 unsigned int qd_bh_count;
328 struct gfs2_glock *qd_gl;
329 struct gfs2_quota_lvb qd_qb;
332 unsigned long qd_last_warn;
333 unsigned long qd_last_touched;
336 struct gfs2_log_buf {
337 struct list_head lb_list;
338 struct buffer_head *lb_bh;
339 struct buffer_head *lb_real;
345 unsigned int tr_blocks;
346 unsigned int tr_revokes;
347 unsigned int tr_reserved;
349 struct gfs2_holder tr_t_gh;
353 unsigned int tr_num_buf;
354 unsigned int tr_num_buf_new;
355 unsigned int tr_num_buf_rm;
356 struct list_head tr_list_buf;
358 unsigned int tr_num_revoke;
359 unsigned int tr_num_revoke_rm;
363 struct list_head ai_list;
365 unsigned int ai_first;
366 struct list_head ai_ail1_list;
367 struct list_head ai_ail2_list;
373 struct list_head jd_list;
375 struct inode *jd_inode;
379 unsigned int jd_blocks;
382 struct gfs2_statfs_change_host {
388 #define GFS2_GLOCKD_DEFAULT 1
389 #define GFS2_GLOCKD_MAX 16
391 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
392 #define GFS2_QUOTA_OFF 0
393 #define GFS2_QUOTA_ACCOUNT 1
394 #define GFS2_QUOTA_ON 2
396 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
397 #define GFS2_DATA_WRITEBACK 1
398 #define GFS2_DATA_ORDERED 2
401 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
402 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
403 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
404 int ar_spectator; /* Don't get a journal because we're always RO */
405 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
406 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
407 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
408 int ar_debug; /* Oops on errors instead of trying to be graceful */
409 int ar_upgrade; /* Upgrade ondisk/multihost format */
410 unsigned int ar_num_glockd; /* Number of glockd threads */
411 int ar_posix_acl; /* Enable posix acls */
412 int ar_quota; /* off/account/on */
413 int ar_suiddir; /* suiddir support */
414 int ar_data; /* ordered/writeback */
420 unsigned int gt_ilimit;
421 unsigned int gt_ilimit_tries;
422 unsigned int gt_ilimit_min;
423 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
424 unsigned int gt_incore_log_blocks;
425 unsigned int gt_log_flush_secs;
426 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
428 unsigned int gt_scand_secs;
429 unsigned int gt_recoverd_secs;
430 unsigned int gt_logd_secs;
431 unsigned int gt_quotad_secs;
433 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
434 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
435 unsigned int gt_quota_scale_num; /* Numerator */
436 unsigned int gt_quota_scale_den; /* Denominator */
437 unsigned int gt_quota_cache_secs;
438 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
439 unsigned int gt_atime_quantum; /* Min secs between atime updates */
440 unsigned int gt_new_files_jdata;
441 unsigned int gt_new_files_directio;
442 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
443 unsigned int gt_lockdump_size;
444 unsigned int gt_stall_secs; /* Detects trouble! */
445 unsigned int gt_complain_secs;
446 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
447 unsigned int gt_statfs_quantum;
448 unsigned int gt_statfs_slow;
452 SDF_JOURNAL_CHECKED = 0,
453 SDF_JOURNAL_LIVE = 1,
458 #define GFS2_FSNAME_LEN 256
460 struct gfs2_inum_host {
465 struct gfs2_sb_host {
471 u32 sb_multihost_format;
475 struct gfs2_inum_host sb_master_dir;
476 struct gfs2_inum_host sb_root_dir;
478 char sb_lockproto[GFS2_LOCKNAME_LEN];
479 char sb_locktable[GFS2_LOCKNAME_LEN];
483 struct super_block *sd_vfs;
484 struct super_block *sd_vfs_meta;
485 struct kobject sd_kobj;
486 unsigned long sd_flags; /* SDF_... */
487 struct gfs2_sb_host sd_sb;
489 /* Constants computed on mount */
493 u32 sd_diptrs; /* Number of pointers in a dinode */
494 u32 sd_inptrs; /* Number of pointers in a indirect block */
495 u32 sd_jbsize; /* Size of a journaled data block */
496 u32 sd_hash_bsize; /* sizeof(exhash block) */
497 u32 sd_hash_bsize_shift;
498 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
500 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
501 u32 sd_max_height; /* Max height of a file's metadata tree */
502 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
503 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
504 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
506 struct gfs2_args sd_args; /* Mount arguments */
507 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
511 struct lm_lockstruct sd_lockstruct;
512 struct list_head sd_reclaim_list;
513 spinlock_t sd_reclaim_lock;
514 wait_queue_head_t sd_reclaim_wq;
515 atomic_t sd_reclaim_count;
516 struct gfs2_holder sd_live_gh;
517 struct gfs2_glock *sd_rename_gl;
518 struct gfs2_glock *sd_trans_gl;
522 struct inode *sd_master_dir;
523 struct inode *sd_jindex;
524 struct inode *sd_inum_inode;
525 struct inode *sd_statfs_inode;
526 struct inode *sd_ir_inode;
527 struct inode *sd_sc_inode;
528 struct inode *sd_qc_inode;
529 struct inode *sd_rindex;
530 struct inode *sd_quota_inode;
534 struct mutex sd_inum_mutex;
538 spinlock_t sd_statfs_spin;
539 struct mutex sd_statfs_mutex;
540 struct gfs2_statfs_change_host sd_statfs_master;
541 struct gfs2_statfs_change_host sd_statfs_local;
542 unsigned long sd_statfs_sync_time;
544 /* Resource group stuff */
547 spinlock_t sd_rindex_spin;
548 struct mutex sd_rindex_mutex;
549 struct list_head sd_rindex_list;
550 struct list_head sd_rindex_mru_list;
551 struct list_head sd_rindex_recent_list;
552 struct gfs2_rgrpd *sd_rindex_forward;
553 unsigned int sd_rgrps;
555 /* Journal index stuff */
557 struct list_head sd_jindex_list;
558 spinlock_t sd_jindex_spin;
559 struct mutex sd_jindex_mutex;
560 unsigned int sd_journals;
561 unsigned long sd_jindex_refresh_time;
563 struct gfs2_jdesc *sd_jdesc;
564 struct gfs2_holder sd_journal_gh;
565 struct gfs2_holder sd_jinode_gh;
567 struct gfs2_holder sd_ir_gh;
568 struct gfs2_holder sd_sc_gh;
569 struct gfs2_holder sd_qc_gh;
573 struct task_struct *sd_scand_process;
574 struct task_struct *sd_recoverd_process;
575 struct task_struct *sd_logd_process;
576 struct task_struct *sd_quotad_process;
577 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
578 unsigned int sd_glockd_num;
582 struct list_head sd_quota_list;
583 atomic_t sd_quota_count;
584 spinlock_t sd_quota_spin;
585 struct mutex sd_quota_mutex;
587 unsigned int sd_quota_slots;
588 unsigned int sd_quota_chunks;
589 unsigned char **sd_quota_bitmap;
591 u64 sd_quota_sync_gen;
592 unsigned long sd_quota_sync_time;
596 spinlock_t sd_log_lock;
598 unsigned int sd_log_blks_reserved;
599 unsigned int sd_log_commited_buf;
600 unsigned int sd_log_commited_revoke;
602 unsigned int sd_log_num_gl;
603 unsigned int sd_log_num_buf;
604 unsigned int sd_log_num_revoke;
605 unsigned int sd_log_num_rg;
606 unsigned int sd_log_num_databuf;
607 unsigned int sd_log_num_jdata;
608 unsigned int sd_log_num_hdrs;
610 struct list_head sd_log_le_gl;
611 struct list_head sd_log_le_buf;
612 struct list_head sd_log_le_revoke;
613 struct list_head sd_log_le_rg;
614 struct list_head sd_log_le_databuf;
616 unsigned int sd_log_blks_free;
617 struct mutex sd_log_reserve_mutex;
620 unsigned int sd_log_head;
621 unsigned int sd_log_tail;
624 unsigned long sd_log_flush_time;
625 struct rw_semaphore sd_log_flush_lock;
626 struct list_head sd_log_flush_list;
628 unsigned int sd_log_flush_head;
629 u64 sd_log_flush_wrapped;
631 struct list_head sd_ail1_list;
632 struct list_head sd_ail2_list;
637 struct list_head sd_revoke_list;
638 unsigned int sd_replay_tail;
640 unsigned int sd_found_blocks;
641 unsigned int sd_found_revokes;
642 unsigned int sd_replayed_blocks;
644 /* For quiescing the filesystem */
646 struct gfs2_holder sd_freeze_gh;
647 struct mutex sd_freeze_lock;
648 unsigned int sd_freeze_count;
652 atomic_t sd_glock_count;
653 atomic_t sd_glock_held_count;
654 atomic_t sd_inode_count;
655 atomic_t sd_reclaimed;
657 char sd_fsname[GFS2_FSNAME_LEN];
658 char sd_table_name[GFS2_FSNAME_LEN];
659 char sd_proto_name[GFS2_FSNAME_LEN];
663 unsigned long sd_last_warning;
664 struct vfsmount *sd_gfs2mnt;
665 struct dentry *debugfs_dir; /* debugfs directory */
666 struct dentry *debugfs_dentry_glocks; /* for debugfs */
669 #endif /* __INCORE_DOT_H__ */