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 */
238 struct inode i_inode;
244 unsigned long i_flags; /* GIF_... */
245 struct gfs2_glock *i_gl; /* Move into i_gh? */
246 struct gfs2_holder i_iopen_gh;
247 struct gfs2_holder i_gh; /* for prepare/commit_write only */
248 struct gfs2_alloc *i_alloc;
249 u64 i_goal; /* goal block for allocations */
250 struct rw_semaphore i_rw_mutex;
258 * Since i_inode is the first element of struct gfs2_inode,
259 * this is effectively a cast.
261 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
263 return container_of(inode, struct gfs2_inode, i_inode);
266 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
268 return inode->i_sb->s_fs_info;
272 struct mutex f_fl_mutex;
273 struct gfs2_holder f_fl_gh;
276 struct gfs2_revoke_replay {
277 struct list_head rr_list;
279 unsigned int rr_where;
288 struct gfs2_quota_data {
289 struct list_head qd_list;
290 unsigned int qd_count;
293 unsigned long qd_flags; /* QDF_... */
298 unsigned int qd_slot;
299 unsigned int qd_slot_count;
301 struct buffer_head *qd_bh;
302 struct gfs2_quota_change *qd_bh_qc;
303 unsigned int qd_bh_count;
305 struct gfs2_glock *qd_gl;
306 struct gfs2_quota_lvb qd_qb;
309 unsigned long qd_last_warn;
310 unsigned long qd_last_touched;
316 unsigned int tr_blocks;
317 unsigned int tr_revokes;
318 unsigned int tr_reserved;
320 struct gfs2_holder tr_t_gh;
324 unsigned int tr_num_buf;
325 unsigned int tr_num_buf_new;
326 unsigned int tr_num_databuf_new;
327 unsigned int tr_num_buf_rm;
328 unsigned int tr_num_databuf_rm;
329 struct list_head tr_list_buf;
331 unsigned int tr_num_revoke;
332 unsigned int tr_num_revoke_rm;
336 struct list_head ai_list;
338 unsigned int ai_first;
339 struct list_head ai_ail1_list;
340 struct list_head ai_ail2_list;
345 struct gfs2_journal_extent {
346 struct list_head extent_list;
348 unsigned int lblock; /* First logical block */
349 u64 dblock; /* First disk block */
354 struct list_head jd_list;
355 struct list_head extent_list;
357 struct inode *jd_inode;
361 unsigned int jd_blocks;
364 struct gfs2_statfs_change_host {
370 #define GFS2_GLOCKD_DEFAULT 1
371 #define GFS2_GLOCKD_MAX 16
373 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
374 #define GFS2_QUOTA_OFF 0
375 #define GFS2_QUOTA_ACCOUNT 1
376 #define GFS2_QUOTA_ON 2
378 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
379 #define GFS2_DATA_WRITEBACK 1
380 #define GFS2_DATA_ORDERED 2
383 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
384 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
385 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
386 unsigned int ar_spectator:1; /* Don't get a journal */
387 unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */
388 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
389 unsigned int ar_localcaching:1; /* Local caching */
390 unsigned int ar_debug:1; /* Oops on errors */
391 unsigned int ar_upgrade:1; /* Upgrade ondisk format */
392 unsigned int ar_posix_acl:1; /* Enable posix acls */
393 unsigned int ar_quota:2; /* off/account/on */
394 unsigned int ar_suiddir:1; /* suiddir support */
395 unsigned int ar_data:2; /* ordered/writeback */
396 unsigned int ar_meta:1; /* mount metafs */
397 unsigned int ar_num_glockd; /* Number of glockd threads */
403 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
404 unsigned int gt_incore_log_blocks;
405 unsigned int gt_log_flush_secs;
407 unsigned int gt_recoverd_secs;
408 unsigned int gt_logd_secs;
409 unsigned int gt_quotad_secs;
411 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
412 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
413 unsigned int gt_quota_scale_num; /* Numerator */
414 unsigned int gt_quota_scale_den; /* Denominator */
415 unsigned int gt_quota_cache_secs;
416 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
417 unsigned int gt_new_files_jdata;
418 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
419 unsigned int gt_stall_secs; /* Detects trouble! */
420 unsigned int gt_complain_secs;
421 unsigned int gt_statfs_quantum;
422 unsigned int gt_statfs_slow;
426 SDF_JOURNAL_CHECKED = 0,
427 SDF_JOURNAL_LIVE = 1,
432 #define GFS2_FSNAME_LEN 256
434 struct gfs2_inum_host {
439 struct gfs2_sb_host {
445 u32 sb_multihost_format;
449 struct gfs2_inum_host sb_master_dir;
450 struct gfs2_inum_host sb_root_dir;
452 char sb_lockproto[GFS2_LOCKNAME_LEN];
453 char sb_locktable[GFS2_LOCKNAME_LEN];
457 struct super_block *sd_vfs;
458 struct kobject sd_kobj;
459 unsigned long sd_flags; /* SDF_... */
460 struct gfs2_sb_host sd_sb;
462 /* Constants computed on mount */
466 u32 sd_diptrs; /* Number of pointers in a dinode */
467 u32 sd_inptrs; /* Number of pointers in a indirect block */
468 u32 sd_jbsize; /* Size of a journaled data block */
469 u32 sd_hash_bsize; /* sizeof(exhash block) */
470 u32 sd_hash_bsize_shift;
471 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
473 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
474 u32 sd_max_height; /* Max height of a file's metadata tree */
475 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
476 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
477 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
479 struct gfs2_args sd_args; /* Mount arguments */
480 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
484 struct lm_lockstruct sd_lockstruct;
485 struct list_head sd_reclaim_list;
486 spinlock_t sd_reclaim_lock;
487 wait_queue_head_t sd_reclaim_wq;
488 atomic_t sd_reclaim_count;
489 struct gfs2_holder sd_live_gh;
490 struct gfs2_glock *sd_rename_gl;
491 struct gfs2_glock *sd_trans_gl;
495 struct dentry *sd_master_dir;
496 struct dentry *sd_root_dir;
498 struct inode *sd_jindex;
499 struct inode *sd_inum_inode;
500 struct inode *sd_statfs_inode;
501 struct inode *sd_ir_inode;
502 struct inode *sd_sc_inode;
503 struct inode *sd_qc_inode;
504 struct inode *sd_rindex;
505 struct inode *sd_quota_inode;
509 struct mutex sd_inum_mutex;
513 spinlock_t sd_statfs_spin;
514 struct gfs2_statfs_change_host sd_statfs_master;
515 struct gfs2_statfs_change_host sd_statfs_local;
516 unsigned long sd_statfs_sync_time;
518 /* Resource group stuff */
520 int sd_rindex_uptodate;
521 spinlock_t sd_rindex_spin;
522 struct mutex sd_rindex_mutex;
523 struct list_head sd_rindex_list;
524 struct list_head sd_rindex_mru_list;
525 struct gfs2_rgrpd *sd_rindex_forward;
526 unsigned int sd_rgrps;
528 /* Journal index stuff */
530 struct list_head sd_jindex_list;
531 spinlock_t sd_jindex_spin;
532 struct mutex sd_jindex_mutex;
533 unsigned int sd_journals;
534 unsigned long sd_jindex_refresh_time;
536 struct gfs2_jdesc *sd_jdesc;
537 struct gfs2_holder sd_journal_gh;
538 struct gfs2_holder sd_jinode_gh;
540 struct gfs2_holder sd_ir_gh;
541 struct gfs2_holder sd_sc_gh;
542 struct gfs2_holder sd_qc_gh;
546 struct task_struct *sd_recoverd_process;
547 struct task_struct *sd_logd_process;
548 struct task_struct *sd_quotad_process;
549 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
550 unsigned int sd_glockd_num;
554 struct list_head sd_quota_list;
555 atomic_t sd_quota_count;
556 spinlock_t sd_quota_spin;
557 struct mutex sd_quota_mutex;
559 unsigned int sd_quota_slots;
560 unsigned int sd_quota_chunks;
561 unsigned char **sd_quota_bitmap;
563 u64 sd_quota_sync_gen;
564 unsigned long sd_quota_sync_time;
568 spinlock_t sd_log_lock;
570 unsigned int sd_log_blks_reserved;
571 unsigned int sd_log_commited_buf;
572 unsigned int sd_log_commited_databuf;
573 unsigned int sd_log_commited_revoke;
575 unsigned int sd_log_num_buf;
576 unsigned int sd_log_num_revoke;
577 unsigned int sd_log_num_rg;
578 unsigned int sd_log_num_databuf;
580 struct list_head sd_log_le_buf;
581 struct list_head sd_log_le_revoke;
582 struct list_head sd_log_le_rg;
583 struct list_head sd_log_le_databuf;
584 struct list_head sd_log_le_ordered;
586 atomic_t sd_log_blks_free;
587 struct mutex sd_log_reserve_mutex;
590 unsigned int sd_log_head;
591 unsigned int sd_log_tail;
594 unsigned long sd_log_flush_time;
595 struct rw_semaphore sd_log_flush_lock;
596 atomic_t sd_log_in_flight;
597 wait_queue_head_t sd_log_flush_wait;
599 unsigned int sd_log_flush_head;
600 u64 sd_log_flush_wrapped;
602 struct list_head sd_ail1_list;
603 struct list_head sd_ail2_list;
608 struct list_head sd_revoke_list;
609 unsigned int sd_replay_tail;
611 unsigned int sd_found_blocks;
612 unsigned int sd_found_revokes;
613 unsigned int sd_replayed_blocks;
615 /* For quiescing the filesystem */
617 struct gfs2_holder sd_freeze_gh;
618 struct mutex sd_freeze_lock;
619 unsigned int sd_freeze_count;
623 atomic_t sd_reclaimed;
625 char sd_fsname[GFS2_FSNAME_LEN];
626 char sd_table_name[GFS2_FSNAME_LEN];
627 char sd_proto_name[GFS2_FSNAME_LEN];
631 unsigned long sd_last_warning;
632 struct dentry *debugfs_dir; /* debugfs directory */
633 struct dentry *debugfs_dentry_glocks; /* for debugfs */
636 #endif /* __INCORE_DOT_H__ */