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>
15 #include <linux/dlm.h>
16 #include <linux/buffer_head.h>
18 #define DIO_WAIT 0x00000010
19 #define DIO_METADATA 0x00000020
20 #define DIO_ALL 0x00000100
22 struct gfs2_log_operations;
23 struct gfs2_log_element;
26 struct gfs2_quota_data;
33 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
35 struct gfs2_log_header_host {
36 u64 lh_sequence; /* Sequence number of this transaction */
37 u32 lh_flags; /* GFS2_LOG_HEAD_... */
38 u32 lh_tail; /* Block number of log tail */
44 * Structure of operations that are associated with each
45 * type of element in the log.
48 struct gfs2_log_operations {
49 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
50 void (*lo_before_commit) (struct gfs2_sbd *sdp);
51 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
52 void (*lo_before_scan) (struct gfs2_jdesc *jd,
53 struct gfs2_log_header_host *head, int pass);
54 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
55 struct gfs2_log_descriptor *ld, __be64 *ptr,
57 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
61 struct gfs2_log_element {
62 struct list_head le_list;
63 const struct gfs2_log_operations *le_ops;
67 struct buffer_head *bi_bh;
75 struct list_head rd_list; /* Link with superblock */
76 struct list_head rd_list_mru;
77 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
78 u64 rd_addr; /* grp block disk address */
79 u64 rd_data0; /* first data location */
80 u32 rd_length; /* length of rgrp header in fs blocks */
81 u32 rd_data; /* num of data blocks in rgrp */
82 u32 rd_bitbytes; /* number of bytes in data bitmaps */
87 struct gfs2_bitmap *rd_bits;
88 struct mutex rd_mutex;
89 struct gfs2_log_element rd_le;
90 struct gfs2_sbd *rd_sbd;
91 unsigned int rd_bh_count;
93 unsigned char rd_flags;
94 #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
95 #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
96 #define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
99 enum gfs2_state_bits {
100 BH_Pinned = BH_PrivateStart,
101 BH_Escaped = BH_PrivateStart + 1,
104 BUFFER_FNS(Pinned, pinned)
105 TAS_BUFFER_FNS(Pinned, pinned)
106 BUFFER_FNS(Escaped, escaped)
107 TAS_BUFFER_FNS(Escaped, escaped)
109 struct gfs2_bufdata {
110 struct buffer_head *bd_bh;
111 struct gfs2_glock *bd_gl;
114 struct list_head list_tr;
117 #define bd_list_tr u.list_tr
118 #define bd_blkno u.blkno
120 struct gfs2_log_element bd_le;
122 struct gfs2_ail *bd_ail;
123 struct list_head bd_ail_st_list;
124 struct list_head bd_ail_gl_list;
128 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
129 * prefix of lock_dlm_ gets awkward.
132 #define GDLM_STRNAME_BYTES 25
133 #define GDLM_LVB_SIZE 32
141 unsigned int ln_type;
144 #define lm_name_equal(name1, name2) \
145 (((name1)->ln_number == (name2)->ln_number) && \
146 ((name1)->ln_type == (name2)->ln_type))
149 struct gfs2_glock_operations {
150 void (*go_xmote_th) (struct gfs2_glock *gl);
151 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
152 void (*go_inval) (struct gfs2_glock *gl, int flags);
153 int (*go_demote_ok) (const struct gfs2_glock *gl);
154 int (*go_lock) (struct gfs2_holder *gh);
155 void (*go_unlock) (struct gfs2_holder *gh);
156 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
158 const unsigned long go_min_hold_time;
163 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
169 struct list_head gh_list;
171 struct gfs2_glock *gh_gl;
172 struct pid *gh_owner_pid;
173 unsigned int gh_state;
177 unsigned long gh_iflags; /* HIF_... */
184 GLF_PENDING_DEMOTE = 4,
185 GLF_DEMOTE_IN_PROGRESS = 5,
188 GLF_INVALIDATE_IN_PROGRESS = 8,
189 GLF_REPLY_PENDING = 9,
195 struct hlist_node gl_list;
196 unsigned long gl_flags; /* GLF_... */
197 struct lm_lockname gl_name;
202 unsigned int gl_state;
203 unsigned int gl_target;
204 unsigned int gl_reply;
205 unsigned int gl_hash;
206 unsigned int gl_demote_state; /* state requested by remote node */
207 unsigned long gl_demote_time; /* time of first demote request */
208 struct list_head gl_holders;
210 const struct gfs2_glock_operations *gl_ops;
211 char gl_strname[GDLM_STRNAME_BYTES];
212 struct dlm_lksb gl_lksb;
214 unsigned long gl_tchange;
217 struct list_head gl_lru;
219 struct gfs2_sbd *gl_sbd;
221 struct inode *gl_aspace;
222 struct list_head gl_ail_list;
223 atomic_t gl_ail_count;
224 struct delayed_work gl_work;
227 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
232 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
233 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
234 unsigned int al_qd_num;
236 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
237 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
239 /* Filled in by gfs2_inplace_reserve() */
241 unsigned int al_line;
243 struct gfs2_holder al_ri_gh;
244 struct gfs2_holder al_rgd_gh;
245 struct gfs2_rgrpd *al_rgd;
253 GIF_USER = 4, /* user inode, not metadata addr space */
258 struct inode i_inode;
264 unsigned long i_flags; /* GIF_... */
265 struct gfs2_glock *i_gl; /* Move into i_gh? */
266 struct gfs2_holder i_iopen_gh;
267 struct gfs2_holder i_gh; /* for prepare/commit_write only */
268 struct gfs2_alloc *i_alloc;
269 u64 i_goal; /* goal block for allocations */
270 struct rw_semaphore i_rw_mutex;
271 struct list_head i_trunc_list;
279 * Since i_inode is the first element of struct gfs2_inode,
280 * this is effectively a cast.
282 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
284 return container_of(inode, struct gfs2_inode, i_inode);
287 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
289 return inode->i_sb->s_fs_info;
293 struct mutex f_fl_mutex;
294 struct gfs2_holder f_fl_gh;
297 struct gfs2_revoke_replay {
298 struct list_head rr_list;
300 unsigned int rr_where;
309 struct gfs2_quota_data {
310 struct list_head qd_list;
311 struct list_head qd_reclaim;
316 unsigned long qd_flags; /* QDF_... */
321 unsigned int qd_slot;
322 unsigned int qd_slot_count;
324 struct buffer_head *qd_bh;
325 struct gfs2_quota_change *qd_bh_qc;
326 unsigned int qd_bh_count;
328 struct gfs2_glock *qd_gl;
329 struct gfs2_quota_lvb qd_qb;
332 unsigned long qd_last_warn;
338 unsigned int tr_blocks;
339 unsigned int tr_revokes;
340 unsigned int tr_reserved;
342 struct gfs2_holder tr_t_gh;
346 unsigned int tr_num_buf;
347 unsigned int tr_num_buf_new;
348 unsigned int tr_num_databuf_new;
349 unsigned int tr_num_buf_rm;
350 unsigned int tr_num_databuf_rm;
351 struct list_head tr_list_buf;
353 unsigned int tr_num_revoke;
354 unsigned int tr_num_revoke_rm;
358 struct list_head ai_list;
360 unsigned int ai_first;
361 struct list_head ai_ail1_list;
362 struct list_head ai_ail2_list;
367 struct gfs2_journal_extent {
368 struct list_head extent_list;
370 unsigned int lblock; /* First logical block */
371 u64 dblock; /* First disk block */
376 struct list_head jd_list;
377 struct list_head extent_list;
379 struct inode *jd_inode;
383 unsigned int jd_blocks;
386 struct gfs2_statfs_change_host {
392 #define GFS2_GLOCKD_DEFAULT 1
393 #define GFS2_GLOCKD_MAX 16
395 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
396 #define GFS2_QUOTA_OFF 0
397 #define GFS2_QUOTA_ACCOUNT 1
398 #define GFS2_QUOTA_ON 2
400 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
401 #define GFS2_DATA_WRITEBACK 1
402 #define GFS2_DATA_ORDERED 2
405 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
406 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
407 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
408 unsigned int ar_spectator:1; /* Don't get a journal */
409 unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */
410 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
411 unsigned int ar_localcaching:1; /* Local caching */
412 unsigned int ar_debug:1; /* Oops on errors */
413 unsigned int ar_upgrade:1; /* Upgrade ondisk format */
414 unsigned int ar_posix_acl:1; /* Enable posix acls */
415 unsigned int ar_quota:2; /* off/account/on */
416 unsigned int ar_suiddir:1; /* suiddir support */
417 unsigned int ar_data:2; /* ordered/writeback */
418 unsigned int ar_meta:1; /* mount metafs */
419 unsigned int ar_num_glockd; /* Number of glockd threads */
425 unsigned int gt_incore_log_blocks;
426 unsigned int gt_log_flush_secs;
428 unsigned int gt_recoverd_secs;
429 unsigned int gt_logd_secs;
431 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
432 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
433 unsigned int gt_quota_scale_num; /* Numerator */
434 unsigned int gt_quota_scale_den; /* Denominator */
435 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
436 unsigned int gt_new_files_jdata;
437 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
438 unsigned int gt_stall_secs; /* Detects trouble! */
439 unsigned int gt_complain_secs;
440 unsigned int gt_statfs_quantum;
441 unsigned int gt_statfs_slow;
445 SDF_JOURNAL_CHECKED = 0,
446 SDF_JOURNAL_LIVE = 1,
451 #define GFS2_FSNAME_LEN 256
453 struct gfs2_inum_host {
458 struct gfs2_sb_host {
464 u32 sb_multihost_format;
468 struct gfs2_inum_host sb_master_dir;
469 struct gfs2_inum_host sb_root_dir;
471 char sb_lockproto[GFS2_LOCKNAME_LEN];
472 char sb_locktable[GFS2_LOCKNAME_LEN];
476 * lm_mount() return values
478 * ls_jid - the journal ID this node should use
479 * ls_first - this node is the first to mount the file system
480 * ls_lockspace - lock module's context for this file system
481 * ls_ops - lock module's functions
484 struct lm_lockstruct {
487 unsigned int ls_first;
488 unsigned int ls_first_done;
489 unsigned int ls_nodir;
490 const struct lm_lockops *ls_ops;
491 unsigned long ls_flags;
492 dlm_lockspace_t *ls_dlm;
495 int ls_recover_jid_done;
496 int ls_recover_jid_status;
500 struct super_block *sd_vfs;
501 struct kobject sd_kobj;
502 unsigned long sd_flags; /* SDF_... */
503 struct gfs2_sb_host sd_sb;
505 /* Constants computed on mount */
509 u32 sd_diptrs; /* Number of pointers in a dinode */
510 u32 sd_inptrs; /* Number of pointers in a indirect block */
511 u32 sd_jbsize; /* Size of a journaled data block */
512 u32 sd_hash_bsize; /* sizeof(exhash block) */
513 u32 sd_hash_bsize_shift;
514 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
516 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
517 u32 sd_max_height; /* Max height of a file's metadata tree */
518 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
519 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
520 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
522 struct gfs2_args sd_args; /* Mount arguments */
523 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
527 struct lm_lockstruct sd_lockstruct;
528 struct gfs2_holder sd_live_gh;
529 struct gfs2_glock *sd_rename_gl;
530 struct gfs2_glock *sd_trans_gl;
534 struct dentry *sd_master_dir;
535 struct dentry *sd_root_dir;
537 struct inode *sd_jindex;
538 struct inode *sd_inum_inode;
539 struct inode *sd_statfs_inode;
540 struct inode *sd_ir_inode;
541 struct inode *sd_sc_inode;
542 struct inode *sd_qc_inode;
543 struct inode *sd_rindex;
544 struct inode *sd_quota_inode;
548 struct mutex sd_inum_mutex;
552 spinlock_t sd_statfs_spin;
553 struct gfs2_statfs_change_host sd_statfs_master;
554 struct gfs2_statfs_change_host sd_statfs_local;
556 /* Resource group stuff */
558 int sd_rindex_uptodate;
559 spinlock_t sd_rindex_spin;
560 struct mutex sd_rindex_mutex;
561 struct list_head sd_rindex_list;
562 struct list_head sd_rindex_mru_list;
563 struct gfs2_rgrpd *sd_rindex_forward;
564 unsigned int sd_rgrps;
566 /* Journal index stuff */
568 struct list_head sd_jindex_list;
569 spinlock_t sd_jindex_spin;
570 struct mutex sd_jindex_mutex;
571 unsigned int sd_journals;
573 struct gfs2_jdesc *sd_jdesc;
574 struct gfs2_holder sd_journal_gh;
575 struct gfs2_holder sd_jinode_gh;
577 struct gfs2_holder sd_ir_gh;
578 struct gfs2_holder sd_sc_gh;
579 struct gfs2_holder sd_qc_gh;
583 struct task_struct *sd_recoverd_process;
584 struct task_struct *sd_logd_process;
585 struct task_struct *sd_quotad_process;
589 struct list_head sd_quota_list;
590 atomic_t sd_quota_count;
591 struct mutex sd_quota_mutex;
592 wait_queue_head_t sd_quota_wait;
593 struct list_head sd_trunc_list;
594 spinlock_t sd_trunc_lock;
596 unsigned int sd_quota_slots;
597 unsigned int sd_quota_chunks;
598 unsigned char **sd_quota_bitmap;
600 u64 sd_quota_sync_gen;
604 spinlock_t sd_log_lock;
606 unsigned int sd_log_blks_reserved;
607 unsigned int sd_log_commited_buf;
608 unsigned int sd_log_commited_databuf;
609 unsigned int sd_log_commited_revoke;
611 unsigned int sd_log_num_buf;
612 unsigned int sd_log_num_revoke;
613 unsigned int sd_log_num_rg;
614 unsigned int sd_log_num_databuf;
616 struct list_head sd_log_le_buf;
617 struct list_head sd_log_le_revoke;
618 struct list_head sd_log_le_rg;
619 struct list_head sd_log_le_databuf;
620 struct list_head sd_log_le_ordered;
622 atomic_t sd_log_blks_free;
623 struct mutex sd_log_reserve_mutex;
626 unsigned int sd_log_head;
627 unsigned int sd_log_tail;
630 unsigned long sd_log_flush_time;
631 struct rw_semaphore sd_log_flush_lock;
632 atomic_t sd_log_in_flight;
633 wait_queue_head_t sd_log_flush_wait;
635 unsigned int sd_log_flush_head;
636 u64 sd_log_flush_wrapped;
638 struct list_head sd_ail1_list;
639 struct list_head sd_ail2_list;
644 struct list_head sd_revoke_list;
645 unsigned int sd_replay_tail;
647 unsigned int sd_found_blocks;
648 unsigned int sd_found_revokes;
649 unsigned int sd_replayed_blocks;
651 /* For quiescing the filesystem */
653 struct gfs2_holder sd_freeze_gh;
654 struct mutex sd_freeze_lock;
655 unsigned int sd_freeze_count;
657 char sd_fsname[GFS2_FSNAME_LEN];
658 char sd_table_name[GFS2_FSNAME_LEN];
659 char sd_proto_name[GFS2_FSNAME_LEN];
663 unsigned long sd_last_warning;
664 struct dentry *debugfs_dir; /* debugfs directory */
665 struct dentry *debugfs_dentry_glocks; /* for debugfs */
668 #endif /* __INCORE_DOT_H__ */