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;
72 struct list_head rd_list; /* Link with superblock */
73 struct list_head rd_list_mru;
74 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
75 u64 rd_addr; /* grp block disk address */
76 u64 rd_data0; /* first data location */
77 u32 rd_length; /* length of rgrp header in fs blocks */
78 u32 rd_data; /* num of data blocks in rgrp */
79 u32 rd_bitbytes; /* number of bytes in data bitmaps */
84 struct gfs2_bitmap *rd_bits;
85 struct mutex rd_mutex;
86 struct gfs2_log_element rd_le;
87 struct gfs2_sbd *rd_sbd;
88 unsigned int rd_bh_count;
90 unsigned char rd_flags;
91 #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
92 #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
93 #define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
96 enum gfs2_state_bits {
97 BH_Pinned = BH_PrivateStart,
98 BH_Escaped = BH_PrivateStart + 1,
101 BUFFER_FNS(Pinned, pinned)
102 TAS_BUFFER_FNS(Pinned, pinned)
103 BUFFER_FNS(Escaped, escaped)
104 TAS_BUFFER_FNS(Escaped, escaped)
106 struct gfs2_bufdata {
107 struct buffer_head *bd_bh;
108 struct gfs2_glock *bd_gl;
111 struct list_head list_tr;
114 #define bd_list_tr u.list_tr
115 #define bd_blkno u.blkno
117 struct gfs2_log_element bd_le;
119 struct gfs2_ail *bd_ail;
120 struct list_head bd_ail_st_list;
121 struct list_head bd_ail_gl_list;
124 struct gfs2_glock_operations {
125 void (*go_xmote_th) (struct gfs2_glock *gl);
126 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
127 void (*go_inval) (struct gfs2_glock *gl, int flags);
128 int (*go_demote_ok) (struct gfs2_glock *gl);
129 int (*go_lock) (struct gfs2_holder *gh);
130 void (*go_unlock) (struct gfs2_holder *gh);
131 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
133 const unsigned long go_min_hold_time;
138 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
144 struct list_head gh_list;
146 struct gfs2_glock *gh_gl;
147 struct pid *gh_owner_pid;
148 unsigned int gh_state;
152 unsigned long gh_iflags; /* HIF_... */
160 GLF_PENDING_DEMOTE = 4,
161 GLF_DEMOTE_IN_PROGRESS = 5,
164 GLF_INVALIDATE_IN_PROGRESS = 8,
165 GLF_REPLY_PENDING = 9,
169 struct hlist_node gl_list;
170 unsigned long gl_flags; /* GLF_... */
171 struct lm_lockname gl_name;
176 unsigned int gl_state;
177 unsigned int gl_target;
178 unsigned int gl_reply;
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 */
182 struct list_head gl_holders;
184 const struct gfs2_glock_operations *gl_ops;
187 atomic_t gl_lvb_count;
189 unsigned long gl_stamp;
190 unsigned long gl_tchange;
193 struct list_head gl_reclaim;
195 struct gfs2_sbd *gl_sbd;
197 struct inode *gl_aspace;
198 struct list_head gl_ail_list;
199 atomic_t gl_ail_count;
200 struct delayed_work gl_work;
203 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
208 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
209 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
210 unsigned int al_qd_num;
212 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
213 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
215 /* Filled in by gfs2_inplace_reserve() */
217 unsigned int al_line;
219 struct gfs2_holder al_ri_gh;
220 struct gfs2_holder al_rgd_gh;
221 struct gfs2_rgrpd *al_rgd;
229 GIF_USER = 4, /* user inode, not metadata addr space */
234 struct inode i_inode;
240 unsigned long i_flags; /* GIF_... */
241 struct gfs2_glock *i_gl; /* Move into i_gh? */
242 struct gfs2_holder i_iopen_gh;
243 struct gfs2_holder i_gh; /* for prepare/commit_write only */
244 struct gfs2_alloc *i_alloc;
245 u64 i_goal; /* goal block for allocations */
246 struct rw_semaphore i_rw_mutex;
254 * Since i_inode is the first element of struct gfs2_inode,
255 * this is effectively a cast.
257 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
259 return container_of(inode, struct gfs2_inode, i_inode);
262 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
264 return inode->i_sb->s_fs_info;
268 struct mutex f_fl_mutex;
269 struct gfs2_holder f_fl_gh;
272 struct gfs2_revoke_replay {
273 struct list_head rr_list;
275 unsigned int rr_where;
284 struct gfs2_quota_data {
285 struct list_head qd_list;
286 unsigned int qd_count;
289 unsigned long qd_flags; /* QDF_... */
294 unsigned int qd_slot;
295 unsigned int qd_slot_count;
297 struct buffer_head *qd_bh;
298 struct gfs2_quota_change *qd_bh_qc;
299 unsigned int qd_bh_count;
301 struct gfs2_glock *qd_gl;
302 struct gfs2_quota_lvb qd_qb;
305 unsigned long qd_last_warn;
306 unsigned long qd_last_touched;
312 unsigned int tr_blocks;
313 unsigned int tr_revokes;
314 unsigned int tr_reserved;
316 struct gfs2_holder tr_t_gh;
320 unsigned int tr_num_buf;
321 unsigned int tr_num_buf_new;
322 unsigned int tr_num_databuf_new;
323 unsigned int tr_num_buf_rm;
324 unsigned int tr_num_databuf_rm;
325 struct list_head tr_list_buf;
327 unsigned int tr_num_revoke;
328 unsigned int tr_num_revoke_rm;
332 struct list_head ai_list;
334 unsigned int ai_first;
335 struct list_head ai_ail1_list;
336 struct list_head ai_ail2_list;
341 struct gfs2_journal_extent {
342 struct list_head extent_list;
344 unsigned int lblock; /* First logical block */
345 u64 dblock; /* First disk block */
350 struct list_head jd_list;
351 struct list_head extent_list;
353 struct inode *jd_inode;
357 unsigned int jd_blocks;
360 struct gfs2_statfs_change_host {
366 #define GFS2_GLOCKD_DEFAULT 1
367 #define GFS2_GLOCKD_MAX 16
369 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
370 #define GFS2_QUOTA_OFF 0
371 #define GFS2_QUOTA_ACCOUNT 1
372 #define GFS2_QUOTA_ON 2
374 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
375 #define GFS2_DATA_WRITEBACK 1
376 #define GFS2_DATA_ORDERED 2
379 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
380 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
381 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
382 unsigned int ar_spectator:1; /* Don't get a journal */
383 unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */
384 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
385 unsigned int ar_localcaching:1; /* Local caching */
386 unsigned int ar_debug:1; /* Oops on errors */
387 unsigned int ar_upgrade:1; /* Upgrade ondisk format */
388 unsigned int ar_posix_acl:1; /* Enable posix acls */
389 unsigned int ar_quota:2; /* off/account/on */
390 unsigned int ar_suiddir:1; /* suiddir support */
391 unsigned int ar_data:2; /* ordered/writeback */
392 unsigned int ar_meta:1; /* mount metafs */
393 unsigned int ar_num_glockd; /* Number of glockd threads */
399 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
400 unsigned int gt_incore_log_blocks;
401 unsigned int gt_log_flush_secs;
403 unsigned int gt_recoverd_secs;
404 unsigned int gt_logd_secs;
406 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
407 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
408 unsigned int gt_quota_scale_num; /* Numerator */
409 unsigned int gt_quota_scale_den; /* Denominator */
410 unsigned int gt_quota_cache_secs;
411 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
412 unsigned int gt_new_files_jdata;
413 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
414 unsigned int gt_stall_secs; /* Detects trouble! */
415 unsigned int gt_complain_secs;
416 unsigned int gt_statfs_quantum;
417 unsigned int gt_statfs_slow;
421 SDF_JOURNAL_CHECKED = 0,
422 SDF_JOURNAL_LIVE = 1,
427 #define GFS2_FSNAME_LEN 256
429 struct gfs2_inum_host {
434 struct gfs2_sb_host {
440 u32 sb_multihost_format;
444 struct gfs2_inum_host sb_master_dir;
445 struct gfs2_inum_host sb_root_dir;
447 char sb_lockproto[GFS2_LOCKNAME_LEN];
448 char sb_locktable[GFS2_LOCKNAME_LEN];
452 struct super_block *sd_vfs;
453 struct kobject sd_kobj;
454 unsigned long sd_flags; /* SDF_... */
455 struct gfs2_sb_host sd_sb;
457 /* Constants computed on mount */
461 u32 sd_diptrs; /* Number of pointers in a dinode */
462 u32 sd_inptrs; /* Number of pointers in a indirect block */
463 u32 sd_jbsize; /* Size of a journaled data block */
464 u32 sd_hash_bsize; /* sizeof(exhash block) */
465 u32 sd_hash_bsize_shift;
466 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
468 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
469 u32 sd_max_height; /* Max height of a file's metadata tree */
470 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
471 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
472 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
474 struct gfs2_args sd_args; /* Mount arguments */
475 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
479 struct lm_lockstruct sd_lockstruct;
480 struct list_head sd_reclaim_list;
481 spinlock_t sd_reclaim_lock;
482 wait_queue_head_t sd_reclaim_wq;
483 atomic_t sd_reclaim_count;
484 struct gfs2_holder sd_live_gh;
485 struct gfs2_glock *sd_rename_gl;
486 struct gfs2_glock *sd_trans_gl;
490 struct dentry *sd_master_dir;
491 struct dentry *sd_root_dir;
493 struct inode *sd_jindex;
494 struct inode *sd_inum_inode;
495 struct inode *sd_statfs_inode;
496 struct inode *sd_ir_inode;
497 struct inode *sd_sc_inode;
498 struct inode *sd_qc_inode;
499 struct inode *sd_rindex;
500 struct inode *sd_quota_inode;
504 struct mutex sd_inum_mutex;
508 spinlock_t sd_statfs_spin;
509 struct gfs2_statfs_change_host sd_statfs_master;
510 struct gfs2_statfs_change_host sd_statfs_local;
512 /* Resource group stuff */
514 int sd_rindex_uptodate;
515 spinlock_t sd_rindex_spin;
516 struct mutex sd_rindex_mutex;
517 struct list_head sd_rindex_list;
518 struct list_head sd_rindex_mru_list;
519 struct gfs2_rgrpd *sd_rindex_forward;
520 unsigned int sd_rgrps;
522 /* Journal index stuff */
524 struct list_head sd_jindex_list;
525 spinlock_t sd_jindex_spin;
526 struct mutex sd_jindex_mutex;
527 unsigned int sd_journals;
528 unsigned long sd_jindex_refresh_time;
530 struct gfs2_jdesc *sd_jdesc;
531 struct gfs2_holder sd_journal_gh;
532 struct gfs2_holder sd_jinode_gh;
534 struct gfs2_holder sd_ir_gh;
535 struct gfs2_holder sd_sc_gh;
536 struct gfs2_holder sd_qc_gh;
540 struct task_struct *sd_recoverd_process;
541 struct task_struct *sd_logd_process;
542 struct task_struct *sd_quotad_process;
543 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
544 unsigned int sd_glockd_num;
548 struct list_head sd_quota_list;
549 atomic_t sd_quota_count;
550 spinlock_t sd_quota_spin;
551 struct mutex sd_quota_mutex;
552 wait_queue_head_t sd_quota_wait;
554 unsigned int sd_quota_slots;
555 unsigned int sd_quota_chunks;
556 unsigned char **sd_quota_bitmap;
558 u64 sd_quota_sync_gen;
562 spinlock_t sd_log_lock;
564 unsigned int sd_log_blks_reserved;
565 unsigned int sd_log_commited_buf;
566 unsigned int sd_log_commited_databuf;
567 unsigned int sd_log_commited_revoke;
569 unsigned int sd_log_num_buf;
570 unsigned int sd_log_num_revoke;
571 unsigned int sd_log_num_rg;
572 unsigned int sd_log_num_databuf;
574 struct list_head sd_log_le_buf;
575 struct list_head sd_log_le_revoke;
576 struct list_head sd_log_le_rg;
577 struct list_head sd_log_le_databuf;
578 struct list_head sd_log_le_ordered;
580 atomic_t sd_log_blks_free;
581 struct mutex sd_log_reserve_mutex;
584 unsigned int sd_log_head;
585 unsigned int sd_log_tail;
588 unsigned long sd_log_flush_time;
589 struct rw_semaphore sd_log_flush_lock;
590 atomic_t sd_log_in_flight;
591 wait_queue_head_t sd_log_flush_wait;
593 unsigned int sd_log_flush_head;
594 u64 sd_log_flush_wrapped;
596 struct list_head sd_ail1_list;
597 struct list_head sd_ail2_list;
602 struct list_head sd_revoke_list;
603 unsigned int sd_replay_tail;
605 unsigned int sd_found_blocks;
606 unsigned int sd_found_revokes;
607 unsigned int sd_replayed_blocks;
609 /* For quiescing the filesystem */
611 struct gfs2_holder sd_freeze_gh;
612 struct mutex sd_freeze_lock;
613 unsigned int sd_freeze_count;
617 atomic_t sd_reclaimed;
619 char sd_fsname[GFS2_FSNAME_LEN];
620 char sd_table_name[GFS2_FSNAME_LEN];
621 char sd_proto_name[GFS2_FSNAME_LEN];
625 unsigned long sd_last_warning;
626 struct dentry *debugfs_dir; /* debugfs directory */
627 struct dentry *debugfs_dentry_glocks; /* for debugfs */
630 #endif /* __INCORE_DOT_H__ */