2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 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_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 {
78 struct list_head rd_list; /* Link with superblock */
79 struct list_head rd_list_mru;
80 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
81 u64 rd_addr; /* grp block disk address */
82 u64 rd_data0; /* first data location */
83 u32 rd_length; /* length of rgrp header in fs blocks */
84 u32 rd_data; /* num of data blocks in rgrp */
85 u32 rd_bitbytes; /* number of bytes in data bitmaps */
86 struct gfs2_rgrp_host rd_rg;
87 struct gfs2_bitmap *rd_bits;
88 unsigned int rd_bh_count;
89 struct mutex rd_mutex;
91 struct gfs2_log_element rd_le;
93 struct gfs2_sbd *rd_sbd;
94 unsigned char rd_flags;
95 #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
96 #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
97 #define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
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;
115 struct list_head list_tr;
118 #define bd_list_tr u.list_tr
119 #define bd_blkno u.blkno
121 struct gfs2_log_element bd_le;
123 struct gfs2_ail *bd_ail;
124 struct list_head bd_ail_st_list;
125 struct list_head bd_ail_gl_list;
128 struct gfs2_glock_operations {
129 void (*go_xmote_th) (struct gfs2_glock *gl);
130 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
131 void (*go_inval) (struct gfs2_glock *gl, int flags);
132 int (*go_demote_ok) (struct gfs2_glock *gl);
133 int (*go_lock) (struct gfs2_holder *gh);
134 void (*go_unlock) (struct gfs2_holder *gh);
135 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
137 const unsigned long go_min_hold_time;
142 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
148 struct list_head gh_list;
150 struct gfs2_glock *gh_gl;
151 struct pid *gh_owner_pid;
152 unsigned int gh_state;
156 unsigned long gh_iflags; /* HIF_... */
164 GLF_PENDING_DEMOTE = 4,
165 GLF_DEMOTE_IN_PROGRESS = 5,
168 GLF_INVALIDATE_IN_PROGRESS = 8,
169 GLF_REPLY_PENDING = 9,
173 struct hlist_node gl_list;
174 unsigned long gl_flags; /* GLF_... */
175 struct lm_lockname gl_name;
180 unsigned int gl_state;
181 unsigned int gl_target;
182 unsigned int gl_reply;
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 */
186 struct list_head gl_holders;
188 const struct gfs2_glock_operations *gl_ops;
191 atomic_t gl_lvb_count;
193 unsigned long gl_stamp;
194 unsigned long gl_tchange;
197 struct list_head gl_reclaim;
199 struct gfs2_sbd *gl_sbd;
201 struct inode *gl_aspace;
202 struct list_head gl_ail_list;
203 atomic_t gl_ail_count;
204 struct delayed_work gl_work;
207 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
212 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
213 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
214 unsigned int al_qd_num;
216 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
217 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
219 /* Filled in by gfs2_inplace_reserve() */
221 unsigned int al_line;
223 struct gfs2_holder al_ri_gh;
224 struct gfs2_holder al_rgd_gh;
225 struct gfs2_rgrpd *al_rgd;
233 GIF_USER = 4, /* user inode, not metadata addr space */
236 struct gfs2_dinode_host {
237 u64 di_size; /* number of bytes in file */
238 u64 di_generation; /* generation number for NFS */
239 u32 di_flags; /* GFS2_DIF_... */
240 /* These only apply to directories */
241 u32 di_entries; /* The number of entries in the directory */
242 u64 di_eattr; /* extended attribute block number */
246 struct inode i_inode;
249 unsigned long i_flags; /* GIF_... */
251 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
253 struct gfs2_glock *i_gl; /* Move into i_gh? */
254 struct gfs2_holder i_iopen_gh;
255 struct gfs2_holder i_gh; /* for prepare/commit_write only */
256 struct gfs2_alloc *i_alloc;
257 u64 i_goal; /* goal block for allocations */
258 struct rw_semaphore i_rw_mutex;
264 * Since i_inode is the first element of struct gfs2_inode,
265 * this is effectively a cast.
267 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
269 return container_of(inode, struct gfs2_inode, i_inode);
272 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
274 return inode->i_sb->s_fs_info;
278 struct mutex f_fl_mutex;
279 struct gfs2_holder f_fl_gh;
282 struct gfs2_revoke_replay {
283 struct list_head rr_list;
285 unsigned int rr_where;
294 struct gfs2_quota_data {
295 struct list_head qd_list;
296 unsigned int qd_count;
299 unsigned long qd_flags; /* QDF_... */
304 unsigned int qd_slot;
305 unsigned int qd_slot_count;
307 struct buffer_head *qd_bh;
308 struct gfs2_quota_change *qd_bh_qc;
309 unsigned int qd_bh_count;
311 struct gfs2_glock *qd_gl;
312 struct gfs2_quota_lvb qd_qb;
315 unsigned long qd_last_warn;
316 unsigned long qd_last_touched;
322 unsigned int tr_blocks;
323 unsigned int tr_revokes;
324 unsigned int tr_reserved;
326 struct gfs2_holder tr_t_gh;
330 unsigned int tr_num_buf;
331 unsigned int tr_num_buf_new;
332 unsigned int tr_num_databuf_new;
333 unsigned int tr_num_buf_rm;
334 unsigned int tr_num_databuf_rm;
335 struct list_head tr_list_buf;
337 unsigned int tr_num_revoke;
338 unsigned int tr_num_revoke_rm;
342 struct list_head ai_list;
344 unsigned int ai_first;
345 struct list_head ai_ail1_list;
346 struct list_head ai_ail2_list;
351 struct gfs2_journal_extent {
352 struct list_head extent_list;
354 unsigned int lblock; /* First logical block */
355 u64 dblock; /* First disk block */
360 struct list_head jd_list;
361 struct list_head extent_list;
363 struct inode *jd_inode;
367 unsigned int jd_blocks;
370 struct gfs2_statfs_change_host {
376 #define GFS2_GLOCKD_DEFAULT 1
377 #define GFS2_GLOCKD_MAX 16
379 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
380 #define GFS2_QUOTA_OFF 0
381 #define GFS2_QUOTA_ACCOUNT 1
382 #define GFS2_QUOTA_ON 2
384 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
385 #define GFS2_DATA_WRITEBACK 1
386 #define GFS2_DATA_ORDERED 2
389 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
390 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
391 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
392 int ar_spectator; /* Don't get a journal because we're always RO */
393 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
394 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
395 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
396 int ar_debug; /* Oops on errors instead of trying to be graceful */
397 int ar_upgrade; /* Upgrade ondisk/multihost format */
398 unsigned int ar_num_glockd; /* Number of glockd threads */
399 int ar_posix_acl; /* Enable posix acls */
400 int ar_quota; /* off/account/on */
401 int ar_suiddir; /* suiddir support */
402 int ar_data; /* ordered/writeback */
408 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
409 unsigned int gt_incore_log_blocks;
410 unsigned int gt_log_flush_secs;
412 unsigned int gt_recoverd_secs;
413 unsigned int gt_logd_secs;
414 unsigned int gt_quotad_secs;
416 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
417 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
418 unsigned int gt_quota_scale_num; /* Numerator */
419 unsigned int gt_quota_scale_den; /* Denominator */
420 unsigned int gt_quota_cache_secs;
421 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
422 unsigned int gt_atime_quantum; /* Min secs between atime updates */
423 unsigned int gt_new_files_jdata;
424 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
425 unsigned int gt_stall_secs; /* Detects trouble! */
426 unsigned int gt_complain_secs;
427 unsigned int gt_statfs_quantum;
428 unsigned int gt_statfs_slow;
432 SDF_JOURNAL_CHECKED = 0,
433 SDF_JOURNAL_LIVE = 1,
438 #define GFS2_FSNAME_LEN 256
440 struct gfs2_inum_host {
445 struct gfs2_sb_host {
451 u32 sb_multihost_format;
455 struct gfs2_inum_host sb_master_dir;
456 struct gfs2_inum_host sb_root_dir;
458 char sb_lockproto[GFS2_LOCKNAME_LEN];
459 char sb_locktable[GFS2_LOCKNAME_LEN];
463 struct super_block *sd_vfs;
464 struct super_block *sd_vfs_meta;
465 struct kobject sd_kobj;
466 unsigned long sd_flags; /* SDF_... */
467 struct gfs2_sb_host sd_sb;
469 /* Constants computed on mount */
473 u32 sd_diptrs; /* Number of pointers in a dinode */
474 u32 sd_inptrs; /* Number of pointers in a indirect block */
475 u32 sd_jbsize; /* Size of a journaled data block */
476 u32 sd_hash_bsize; /* sizeof(exhash block) */
477 u32 sd_hash_bsize_shift;
478 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
480 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
481 u32 sd_max_height; /* Max height of a file's metadata tree */
482 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
483 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
484 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
486 struct gfs2_args sd_args; /* Mount arguments */
487 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
491 struct lm_lockstruct sd_lockstruct;
492 struct list_head sd_reclaim_list;
493 spinlock_t sd_reclaim_lock;
494 wait_queue_head_t sd_reclaim_wq;
495 atomic_t sd_reclaim_count;
496 struct gfs2_holder sd_live_gh;
497 struct gfs2_glock *sd_rename_gl;
498 struct gfs2_glock *sd_trans_gl;
502 struct inode *sd_master_dir;
503 struct inode *sd_jindex;
504 struct inode *sd_inum_inode;
505 struct inode *sd_statfs_inode;
506 struct inode *sd_ir_inode;
507 struct inode *sd_sc_inode;
508 struct inode *sd_qc_inode;
509 struct inode *sd_rindex;
510 struct inode *sd_quota_inode;
514 struct mutex sd_inum_mutex;
518 spinlock_t sd_statfs_spin;
519 struct gfs2_statfs_change_host sd_statfs_master;
520 struct gfs2_statfs_change_host sd_statfs_local;
521 unsigned long sd_statfs_sync_time;
523 /* Resource group stuff */
525 int sd_rindex_uptodate;
526 spinlock_t sd_rindex_spin;
527 struct mutex sd_rindex_mutex;
528 struct list_head sd_rindex_list;
529 struct list_head sd_rindex_mru_list;
530 struct gfs2_rgrpd *sd_rindex_forward;
531 unsigned int sd_rgrps;
533 /* Journal index stuff */
535 struct list_head sd_jindex_list;
536 spinlock_t sd_jindex_spin;
537 struct mutex sd_jindex_mutex;
538 unsigned int sd_journals;
539 unsigned long sd_jindex_refresh_time;
541 struct gfs2_jdesc *sd_jdesc;
542 struct gfs2_holder sd_journal_gh;
543 struct gfs2_holder sd_jinode_gh;
545 struct gfs2_holder sd_ir_gh;
546 struct gfs2_holder sd_sc_gh;
547 struct gfs2_holder sd_qc_gh;
551 struct task_struct *sd_recoverd_process;
552 struct task_struct *sd_logd_process;
553 struct task_struct *sd_quotad_process;
554 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
555 unsigned int sd_glockd_num;
559 struct list_head sd_quota_list;
560 atomic_t sd_quota_count;
561 spinlock_t sd_quota_spin;
562 struct mutex sd_quota_mutex;
564 unsigned int sd_quota_slots;
565 unsigned int sd_quota_chunks;
566 unsigned char **sd_quota_bitmap;
568 u64 sd_quota_sync_gen;
569 unsigned long sd_quota_sync_time;
573 spinlock_t sd_log_lock;
575 unsigned int sd_log_blks_reserved;
576 unsigned int sd_log_commited_buf;
577 unsigned int sd_log_commited_databuf;
578 unsigned int sd_log_commited_revoke;
580 unsigned int sd_log_num_buf;
581 unsigned int sd_log_num_revoke;
582 unsigned int sd_log_num_rg;
583 unsigned int sd_log_num_databuf;
585 struct list_head sd_log_le_buf;
586 struct list_head sd_log_le_revoke;
587 struct list_head sd_log_le_rg;
588 struct list_head sd_log_le_databuf;
589 struct list_head sd_log_le_ordered;
591 atomic_t sd_log_blks_free;
592 struct mutex sd_log_reserve_mutex;
595 unsigned int sd_log_head;
596 unsigned int sd_log_tail;
599 unsigned long sd_log_flush_time;
600 struct rw_semaphore sd_log_flush_lock;
601 atomic_t sd_log_in_flight;
602 wait_queue_head_t sd_log_flush_wait;
604 unsigned int sd_log_flush_head;
605 u64 sd_log_flush_wrapped;
607 struct list_head sd_ail1_list;
608 struct list_head sd_ail2_list;
613 struct list_head sd_revoke_list;
614 unsigned int sd_replay_tail;
616 unsigned int sd_found_blocks;
617 unsigned int sd_found_revokes;
618 unsigned int sd_replayed_blocks;
620 /* For quiescing the filesystem */
622 struct gfs2_holder sd_freeze_gh;
623 struct mutex sd_freeze_lock;
624 unsigned int sd_freeze_count;
628 atomic_t sd_reclaimed;
630 char sd_fsname[GFS2_FSNAME_LEN];
631 char sd_table_name[GFS2_FSNAME_LEN];
632 char sd_proto_name[GFS2_FSNAME_LEN];
636 unsigned long sd_last_warning;
637 struct vfsmount *sd_gfs2mnt;
638 struct dentry *debugfs_dir; /* debugfs directory */
639 struct dentry *debugfs_dentry_glocks; /* for debugfs */
642 #endif /* __INCORE_DOT_H__ */