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,
174 struct hlist_node gl_list;
175 unsigned long gl_flags; /* GLF_... */
176 struct lm_lockname gl_name;
181 unsigned int gl_state;
182 unsigned int gl_hash;
183 unsigned int gl_demote_state; /* state requested by remote node */
184 unsigned long gl_demote_time; /* time of first demote request */
185 struct pid *gl_owner_pid;
187 struct list_head gl_holders;
188 struct list_head gl_waiters1; /* HIF_MUTEX */
189 struct list_head gl_waiters3; /* HIF_PROMOTE */
191 const struct gfs2_glock_operations *gl_ops;
193 struct gfs2_holder *gl_req_gh;
197 atomic_t gl_lvb_count;
199 unsigned long gl_stamp;
200 unsigned long gl_tchange;
203 struct list_head gl_reclaim;
205 struct gfs2_sbd *gl_sbd;
207 struct inode *gl_aspace;
208 struct list_head gl_ail_list;
209 atomic_t gl_ail_count;
210 struct delayed_work gl_work;
213 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
218 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
219 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
220 unsigned int al_qd_num;
222 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
223 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
225 /* Filled in by gfs2_inplace_reserve() */
227 unsigned int al_line;
229 struct gfs2_holder al_ri_gh;
230 struct gfs2_holder al_rgd_gh;
231 struct gfs2_rgrpd *al_rgd;
239 GIF_USER = 4, /* user inode, not metadata addr space */
242 struct gfs2_dinode_host {
243 u64 di_size; /* number of bytes in file */
244 u64 di_generation; /* generation number for NFS */
245 u32 di_flags; /* GFS2_DIF_... */
246 /* These only apply to directories */
247 u32 di_entries; /* The number of entries in the directory */
248 u64 di_eattr; /* extended attribute block number */
252 struct inode i_inode;
255 unsigned long i_flags; /* GIF_... */
257 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
259 struct gfs2_glock *i_gl; /* Move into i_gh? */
260 struct gfs2_holder i_iopen_gh;
261 struct gfs2_holder i_gh; /* for prepare/commit_write only */
262 struct gfs2_alloc *i_alloc;
263 u64 i_goal; /* goal block for allocations */
264 struct rw_semaphore i_rw_mutex;
270 * Since i_inode is the first element of struct gfs2_inode,
271 * this is effectively a cast.
273 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
275 return container_of(inode, struct gfs2_inode, i_inode);
278 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
280 return inode->i_sb->s_fs_info;
284 struct mutex f_fl_mutex;
285 struct gfs2_holder f_fl_gh;
288 struct gfs2_revoke_replay {
289 struct list_head rr_list;
291 unsigned int rr_where;
300 struct gfs2_quota_data {
301 struct list_head qd_list;
302 unsigned int qd_count;
305 unsigned long qd_flags; /* QDF_... */
310 unsigned int qd_slot;
311 unsigned int qd_slot_count;
313 struct buffer_head *qd_bh;
314 struct gfs2_quota_change *qd_bh_qc;
315 unsigned int qd_bh_count;
317 struct gfs2_glock *qd_gl;
318 struct gfs2_quota_lvb qd_qb;
321 unsigned long qd_last_warn;
322 unsigned long qd_last_touched;
328 unsigned int tr_blocks;
329 unsigned int tr_revokes;
330 unsigned int tr_reserved;
332 struct gfs2_holder tr_t_gh;
336 unsigned int tr_num_buf;
337 unsigned int tr_num_buf_new;
338 unsigned int tr_num_databuf_new;
339 unsigned int tr_num_buf_rm;
340 unsigned int tr_num_databuf_rm;
341 struct list_head tr_list_buf;
343 unsigned int tr_num_revoke;
344 unsigned int tr_num_revoke_rm;
348 struct list_head ai_list;
350 unsigned int ai_first;
351 struct list_head ai_ail1_list;
352 struct list_head ai_ail2_list;
357 struct gfs2_journal_extent {
358 struct list_head extent_list;
360 unsigned int lblock; /* First logical block */
361 u64 dblock; /* First disk block */
366 struct list_head jd_list;
367 struct list_head extent_list;
369 struct inode *jd_inode;
373 unsigned int jd_blocks;
376 struct gfs2_statfs_change_host {
382 #define GFS2_GLOCKD_DEFAULT 1
383 #define GFS2_GLOCKD_MAX 16
385 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
386 #define GFS2_QUOTA_OFF 0
387 #define GFS2_QUOTA_ACCOUNT 1
388 #define GFS2_QUOTA_ON 2
390 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
391 #define GFS2_DATA_WRITEBACK 1
392 #define GFS2_DATA_ORDERED 2
395 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
396 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
397 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
398 int ar_spectator; /* Don't get a journal because we're always RO */
399 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
400 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
401 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
402 int ar_debug; /* Oops on errors instead of trying to be graceful */
403 int ar_upgrade; /* Upgrade ondisk/multihost format */
404 unsigned int ar_num_glockd; /* Number of glockd threads */
405 int ar_posix_acl; /* Enable posix acls */
406 int ar_quota; /* off/account/on */
407 int ar_suiddir; /* suiddir support */
408 int ar_data; /* ordered/writeback */
414 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
415 unsigned int gt_incore_log_blocks;
416 unsigned int gt_log_flush_secs;
418 unsigned int gt_recoverd_secs;
419 unsigned int gt_logd_secs;
420 unsigned int gt_quotad_secs;
422 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
423 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
424 unsigned int gt_quota_scale_num; /* Numerator */
425 unsigned int gt_quota_scale_den; /* Denominator */
426 unsigned int gt_quota_cache_secs;
427 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
428 unsigned int gt_atime_quantum; /* Min secs between atime updates */
429 unsigned int gt_new_files_jdata;
430 unsigned int gt_new_files_directio;
431 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
432 unsigned int gt_stall_secs; /* Detects trouble! */
433 unsigned int gt_complain_secs;
434 unsigned int gt_statfs_quantum;
435 unsigned int gt_statfs_slow;
439 SDF_JOURNAL_CHECKED = 0,
440 SDF_JOURNAL_LIVE = 1,
445 #define GFS2_FSNAME_LEN 256
447 struct gfs2_inum_host {
452 struct gfs2_sb_host {
458 u32 sb_multihost_format;
462 struct gfs2_inum_host sb_master_dir;
463 struct gfs2_inum_host sb_root_dir;
465 char sb_lockproto[GFS2_LOCKNAME_LEN];
466 char sb_locktable[GFS2_LOCKNAME_LEN];
470 struct super_block *sd_vfs;
471 struct super_block *sd_vfs_meta;
472 struct kobject sd_kobj;
473 unsigned long sd_flags; /* SDF_... */
474 struct gfs2_sb_host sd_sb;
476 /* Constants computed on mount */
480 u32 sd_diptrs; /* Number of pointers in a dinode */
481 u32 sd_inptrs; /* Number of pointers in a indirect block */
482 u32 sd_jbsize; /* Size of a journaled data block */
483 u32 sd_hash_bsize; /* sizeof(exhash block) */
484 u32 sd_hash_bsize_shift;
485 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
487 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
488 u32 sd_max_height; /* Max height of a file's metadata tree */
489 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
490 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
491 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
493 struct gfs2_args sd_args; /* Mount arguments */
494 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
498 struct lm_lockstruct sd_lockstruct;
499 struct list_head sd_reclaim_list;
500 spinlock_t sd_reclaim_lock;
501 wait_queue_head_t sd_reclaim_wq;
502 atomic_t sd_reclaim_count;
503 struct gfs2_holder sd_live_gh;
504 struct gfs2_glock *sd_rename_gl;
505 struct gfs2_glock *sd_trans_gl;
509 struct inode *sd_master_dir;
510 struct inode *sd_jindex;
511 struct inode *sd_inum_inode;
512 struct inode *sd_statfs_inode;
513 struct inode *sd_ir_inode;
514 struct inode *sd_sc_inode;
515 struct inode *sd_qc_inode;
516 struct inode *sd_rindex;
517 struct inode *sd_quota_inode;
521 struct mutex sd_inum_mutex;
525 spinlock_t sd_statfs_spin;
526 struct gfs2_statfs_change_host sd_statfs_master;
527 struct gfs2_statfs_change_host sd_statfs_local;
528 unsigned long sd_statfs_sync_time;
530 /* Resource group stuff */
532 int sd_rindex_uptodate;
533 spinlock_t sd_rindex_spin;
534 struct mutex sd_rindex_mutex;
535 struct list_head sd_rindex_list;
536 struct list_head sd_rindex_mru_list;
537 struct list_head sd_rindex_recent_list;
538 struct gfs2_rgrpd *sd_rindex_forward;
539 unsigned int sd_rgrps;
541 /* Journal index stuff */
543 struct list_head sd_jindex_list;
544 spinlock_t sd_jindex_spin;
545 struct mutex sd_jindex_mutex;
546 unsigned int sd_journals;
547 unsigned long sd_jindex_refresh_time;
549 struct gfs2_jdesc *sd_jdesc;
550 struct gfs2_holder sd_journal_gh;
551 struct gfs2_holder sd_jinode_gh;
553 struct gfs2_holder sd_ir_gh;
554 struct gfs2_holder sd_sc_gh;
555 struct gfs2_holder sd_qc_gh;
559 struct task_struct *sd_recoverd_process;
560 struct task_struct *sd_logd_process;
561 struct task_struct *sd_quotad_process;
562 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
563 unsigned int sd_glockd_num;
567 struct list_head sd_quota_list;
568 atomic_t sd_quota_count;
569 spinlock_t sd_quota_spin;
570 struct mutex sd_quota_mutex;
572 unsigned int sd_quota_slots;
573 unsigned int sd_quota_chunks;
574 unsigned char **sd_quota_bitmap;
576 u64 sd_quota_sync_gen;
577 unsigned long sd_quota_sync_time;
581 spinlock_t sd_log_lock;
583 unsigned int sd_log_blks_reserved;
584 unsigned int sd_log_commited_buf;
585 unsigned int sd_log_commited_databuf;
586 unsigned int sd_log_commited_revoke;
588 unsigned int sd_log_num_buf;
589 unsigned int sd_log_num_revoke;
590 unsigned int sd_log_num_rg;
591 unsigned int sd_log_num_databuf;
593 struct list_head sd_log_le_buf;
594 struct list_head sd_log_le_revoke;
595 struct list_head sd_log_le_rg;
596 struct list_head sd_log_le_databuf;
597 struct list_head sd_log_le_ordered;
599 atomic_t sd_log_blks_free;
600 struct mutex sd_log_reserve_mutex;
603 unsigned int sd_log_head;
604 unsigned int sd_log_tail;
607 unsigned long sd_log_flush_time;
608 struct rw_semaphore sd_log_flush_lock;
609 atomic_t sd_log_in_flight;
610 wait_queue_head_t sd_log_flush_wait;
612 unsigned int sd_log_flush_head;
613 u64 sd_log_flush_wrapped;
615 struct list_head sd_ail1_list;
616 struct list_head sd_ail2_list;
621 struct list_head sd_revoke_list;
622 unsigned int sd_replay_tail;
624 unsigned int sd_found_blocks;
625 unsigned int sd_found_revokes;
626 unsigned int sd_replayed_blocks;
628 /* For quiescing the filesystem */
630 struct gfs2_holder sd_freeze_gh;
631 struct mutex sd_freeze_lock;
632 unsigned int sd_freeze_count;
636 atomic_t sd_reclaimed;
638 char sd_fsname[GFS2_FSNAME_LEN];
639 char sd_table_name[GFS2_FSNAME_LEN];
640 char sd_proto_name[GFS2_FSNAME_LEN];
644 unsigned long sd_last_warning;
645 struct vfsmount *sd_gfs2mnt;
646 struct dentry *debugfs_dir; /* debugfs directory */
647 struct dentry *debugfs_dentry_glocks; /* for debugfs */
650 #endif /* __INCORE_DOT_H__ */