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 list_head rd_recent; /* Recently used rgrps */
81 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
82 u64 rd_addr; /* grp block disk address */
83 u64 rd_data0; /* first data location */
84 u32 rd_length; /* length of rgrp header in fs blocks */
85 u32 rd_data; /* num of data blocks in rgrp */
86 u32 rd_bitbytes; /* number of bytes in data bitmaps */
87 struct gfs2_rgrp_host rd_rg;
88 struct gfs2_bitmap *rd_bits;
89 unsigned int rd_bh_count;
90 struct mutex rd_mutex;
92 struct gfs2_log_element rd_le;
94 struct gfs2_sbd *rd_sbd;
95 unsigned char rd_flags;
96 #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
97 #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
98 #define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
101 enum gfs2_state_bits {
102 BH_Pinned = BH_PrivateStart,
103 BH_Escaped = BH_PrivateStart + 1,
106 BUFFER_FNS(Pinned, pinned)
107 TAS_BUFFER_FNS(Pinned, pinned)
108 BUFFER_FNS(Escaped, escaped)
109 TAS_BUFFER_FNS(Escaped, escaped)
111 struct gfs2_bufdata {
112 struct buffer_head *bd_bh;
113 struct gfs2_glock *bd_gl;
116 struct list_head list_tr;
119 #define bd_list_tr u.list_tr
120 #define bd_blkno u.blkno
122 struct gfs2_log_element bd_le;
124 struct gfs2_ail *bd_ail;
125 struct list_head bd_ail_st_list;
126 struct list_head bd_ail_gl_list;
129 struct gfs2_glock_operations {
130 void (*go_xmote_th) (struct gfs2_glock *gl);
131 void (*go_xmote_bh) (struct gfs2_glock *gl);
132 void (*go_inval) (struct gfs2_glock *gl, int flags);
133 int (*go_demote_ok) (struct gfs2_glock *gl);
134 int (*go_lock) (struct gfs2_holder *gh);
135 void (*go_unlock) (struct gfs2_holder *gh);
137 const unsigned long go_min_hold_time;
149 struct list_head gh_list;
151 struct gfs2_glock *gh_gl;
152 struct pid *gh_owner_pid;
153 unsigned int gh_state;
157 unsigned long gh_iflags;
165 GLF_PENDING_DEMOTE = 4,
167 GLF_DEMOTE_IN_PROGRESS = 6,
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_hash;
182 unsigned int gl_demote_state; /* state requested by remote node */
183 unsigned long gl_demote_time; /* time of first demote request */
184 struct pid *gl_owner_pid;
186 struct list_head gl_holders;
187 struct list_head gl_waiters1; /* HIF_MUTEX */
188 struct list_head gl_waiters3; /* HIF_PROMOTE */
190 const struct gfs2_glock_operations *gl_ops;
192 struct gfs2_holder *gl_req_gh;
196 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 list_head gl_ail_list;
208 atomic_t gl_ail_count;
209 struct delayed_work gl_work;
212 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
217 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
218 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
219 unsigned int al_qd_num;
221 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
222 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
224 /* Filled in by gfs2_inplace_reserve() */
226 unsigned int al_line;
228 struct gfs2_holder al_ri_gh;
229 struct gfs2_holder al_rgd_gh;
230 struct gfs2_rgrpd *al_rgd;
240 struct gfs2_dinode_host {
241 u64 di_size; /* number of bytes in file */
242 u64 di_generation; /* generation number for NFS */
243 u32 di_flags; /* GFS2_DIF_... */
244 /* These only apply to directories */
245 u32 di_entries; /* The number of entries in the directory */
246 u64 di_eattr; /* extended attribute block number */
250 struct inode i_inode;
253 unsigned long i_flags; /* GIF_... */
255 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
257 struct gfs2_glock *i_gl; /* Move into i_gh? */
258 struct gfs2_holder i_iopen_gh;
259 struct gfs2_holder i_gh; /* for prepare/commit_write only */
260 struct gfs2_alloc *i_alloc;
261 u64 i_goal; /* goal block for allocations */
262 struct rw_semaphore i_rw_mutex;
268 * Since i_inode is the first element of struct gfs2_inode,
269 * this is effectively a cast.
271 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
273 return container_of(inode, struct gfs2_inode, i_inode);
276 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
278 return inode->i_sb->s_fs_info;
282 struct mutex f_fl_mutex;
283 struct gfs2_holder f_fl_gh;
286 struct gfs2_revoke_replay {
287 struct list_head rr_list;
289 unsigned int rr_where;
298 struct gfs2_quota_data {
299 struct list_head qd_list;
300 unsigned int qd_count;
303 unsigned long qd_flags; /* QDF_... */
308 unsigned int qd_slot;
309 unsigned int qd_slot_count;
311 struct buffer_head *qd_bh;
312 struct gfs2_quota_change *qd_bh_qc;
313 unsigned int qd_bh_count;
315 struct gfs2_glock *qd_gl;
316 struct gfs2_quota_lvb qd_qb;
319 unsigned long qd_last_warn;
320 unsigned long qd_last_touched;
326 unsigned int tr_blocks;
327 unsigned int tr_revokes;
328 unsigned int tr_reserved;
330 struct gfs2_holder tr_t_gh;
334 unsigned int tr_num_buf;
335 unsigned int tr_num_buf_new;
336 unsigned int tr_num_databuf_new;
337 unsigned int tr_num_buf_rm;
338 unsigned int tr_num_databuf_rm;
339 struct list_head tr_list_buf;
341 unsigned int tr_num_revoke;
342 unsigned int tr_num_revoke_rm;
346 struct list_head ai_list;
348 unsigned int ai_first;
349 struct list_head ai_ail1_list;
350 struct list_head ai_ail2_list;
355 struct gfs2_journal_extent {
356 struct list_head extent_list;
358 unsigned int lblock; /* First logical block */
359 u64 dblock; /* First disk block */
364 struct list_head jd_list;
365 struct list_head extent_list;
367 struct inode *jd_inode;
371 unsigned int jd_blocks;
374 struct gfs2_statfs_change_host {
380 #define GFS2_GLOCKD_DEFAULT 1
381 #define GFS2_GLOCKD_MAX 16
383 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
384 #define GFS2_QUOTA_OFF 0
385 #define GFS2_QUOTA_ACCOUNT 1
386 #define GFS2_QUOTA_ON 2
388 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
389 #define GFS2_DATA_WRITEBACK 1
390 #define GFS2_DATA_ORDERED 2
393 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
394 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
395 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
396 int ar_spectator; /* Don't get a journal because we're always RO */
397 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
398 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
399 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
400 int ar_debug; /* Oops on errors instead of trying to be graceful */
401 int ar_upgrade; /* Upgrade ondisk/multihost format */
402 unsigned int ar_num_glockd; /* Number of glockd threads */
403 int ar_posix_acl; /* Enable posix acls */
404 int ar_quota; /* off/account/on */
405 int ar_suiddir; /* suiddir support */
406 int ar_data; /* ordered/writeback */
412 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
413 unsigned int gt_incore_log_blocks;
414 unsigned int gt_log_flush_secs;
416 unsigned int gt_recoverd_secs;
417 unsigned int gt_logd_secs;
418 unsigned int gt_quotad_secs;
420 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
421 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
422 unsigned int gt_quota_scale_num; /* Numerator */
423 unsigned int gt_quota_scale_den; /* Denominator */
424 unsigned int gt_quota_cache_secs;
425 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
426 unsigned int gt_atime_quantum; /* Min secs between atime updates */
427 unsigned int gt_new_files_jdata;
428 unsigned int gt_new_files_directio;
429 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
430 unsigned int gt_stall_secs; /* Detects trouble! */
431 unsigned int gt_complain_secs;
432 unsigned int gt_statfs_quantum;
433 unsigned int gt_statfs_slow;
437 SDF_JOURNAL_CHECKED = 0,
438 SDF_JOURNAL_LIVE = 1,
443 #define GFS2_FSNAME_LEN 256
445 struct gfs2_inum_host {
450 struct gfs2_sb_host {
456 u32 sb_multihost_format;
460 struct gfs2_inum_host sb_master_dir;
461 struct gfs2_inum_host sb_root_dir;
463 char sb_lockproto[GFS2_LOCKNAME_LEN];
464 char sb_locktable[GFS2_LOCKNAME_LEN];
468 struct super_block *sd_vfs;
469 struct super_block *sd_vfs_meta;
470 struct kobject sd_kobj;
471 unsigned long sd_flags; /* SDF_... */
472 struct gfs2_sb_host sd_sb;
474 /* Constants computed on mount */
478 u32 sd_diptrs; /* Number of pointers in a dinode */
479 u32 sd_inptrs; /* Number of pointers in a indirect block */
480 u32 sd_jbsize; /* Size of a journaled data block */
481 u32 sd_hash_bsize; /* sizeof(exhash block) */
482 u32 sd_hash_bsize_shift;
483 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
485 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
486 u32 sd_max_height; /* Max height of a file's metadata tree */
487 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
488 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
489 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
491 struct gfs2_args sd_args; /* Mount arguments */
492 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
496 struct lm_lockstruct sd_lockstruct;
497 struct list_head sd_reclaim_list;
498 spinlock_t sd_reclaim_lock;
499 wait_queue_head_t sd_reclaim_wq;
500 atomic_t sd_reclaim_count;
501 struct gfs2_holder sd_live_gh;
502 struct gfs2_glock *sd_rename_gl;
503 struct gfs2_glock *sd_trans_gl;
507 struct inode *sd_master_dir;
508 struct inode *sd_jindex;
509 struct inode *sd_inum_inode;
510 struct inode *sd_statfs_inode;
511 struct inode *sd_ir_inode;
512 struct inode *sd_sc_inode;
513 struct inode *sd_qc_inode;
514 struct inode *sd_rindex;
515 struct inode *sd_quota_inode;
519 struct mutex sd_inum_mutex;
523 spinlock_t sd_statfs_spin;
524 struct gfs2_statfs_change_host sd_statfs_master;
525 struct gfs2_statfs_change_host sd_statfs_local;
526 unsigned long sd_statfs_sync_time;
528 /* Resource group stuff */
530 int sd_rindex_uptodate;
531 spinlock_t sd_rindex_spin;
532 struct mutex sd_rindex_mutex;
533 struct list_head sd_rindex_list;
534 struct list_head sd_rindex_mru_list;
535 struct list_head sd_rindex_recent_list;
536 struct gfs2_rgrpd *sd_rindex_forward;
537 unsigned int sd_rgrps;
539 /* Journal index stuff */
541 struct list_head sd_jindex_list;
542 spinlock_t sd_jindex_spin;
543 struct mutex sd_jindex_mutex;
544 unsigned int sd_journals;
545 unsigned long sd_jindex_refresh_time;
547 struct gfs2_jdesc *sd_jdesc;
548 struct gfs2_holder sd_journal_gh;
549 struct gfs2_holder sd_jinode_gh;
551 struct gfs2_holder sd_ir_gh;
552 struct gfs2_holder sd_sc_gh;
553 struct gfs2_holder sd_qc_gh;
557 struct task_struct *sd_recoverd_process;
558 struct task_struct *sd_logd_process;
559 struct task_struct *sd_quotad_process;
560 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
561 unsigned int sd_glockd_num;
565 struct list_head sd_quota_list;
566 atomic_t sd_quota_count;
567 spinlock_t sd_quota_spin;
568 struct mutex sd_quota_mutex;
570 unsigned int sd_quota_slots;
571 unsigned int sd_quota_chunks;
572 unsigned char **sd_quota_bitmap;
574 u64 sd_quota_sync_gen;
575 unsigned long sd_quota_sync_time;
579 spinlock_t sd_log_lock;
581 unsigned int sd_log_blks_reserved;
582 unsigned int sd_log_commited_buf;
583 unsigned int sd_log_commited_databuf;
584 unsigned int sd_log_commited_revoke;
586 unsigned int sd_log_num_buf;
587 unsigned int sd_log_num_revoke;
588 unsigned int sd_log_num_rg;
589 unsigned int sd_log_num_databuf;
591 struct list_head sd_log_le_buf;
592 struct list_head sd_log_le_revoke;
593 struct list_head sd_log_le_rg;
594 struct list_head sd_log_le_databuf;
595 struct list_head sd_log_le_ordered;
597 atomic_t sd_log_blks_free;
598 struct mutex sd_log_reserve_mutex;
601 unsigned int sd_log_head;
602 unsigned int sd_log_tail;
605 unsigned long sd_log_flush_time;
606 struct rw_semaphore sd_log_flush_lock;
607 atomic_t sd_log_in_flight;
608 wait_queue_head_t sd_log_flush_wait;
610 unsigned int sd_log_flush_head;
611 u64 sd_log_flush_wrapped;
613 struct list_head sd_ail1_list;
614 struct list_head sd_ail2_list;
619 struct list_head sd_revoke_list;
620 unsigned int sd_replay_tail;
622 unsigned int sd_found_blocks;
623 unsigned int sd_found_revokes;
624 unsigned int sd_replayed_blocks;
626 /* For quiescing the filesystem */
628 struct gfs2_holder sd_freeze_gh;
629 struct mutex sd_freeze_lock;
630 unsigned int sd_freeze_count;
634 atomic_t sd_reclaimed;
636 char sd_fsname[GFS2_FSNAME_LEN];
637 char sd_table_name[GFS2_FSNAME_LEN];
638 char sd_proto_name[GFS2_FSNAME_LEN];
642 unsigned long sd_last_warning;
643 struct vfsmount *sd_gfs2mnt;
644 struct dentry *debugfs_dir; /* debugfs directory */
645 struct dentry *debugfs_dentry_glocks; /* for debugfs */
648 #endif /* __INCORE_DOT_H__ */