blob: 608849d00021cc436f656d1afb7a0966aec63ba0 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Peterson29d38cd2008-01-28 22:31:39 -06003 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
10#ifndef __INCORE_DOT_H__
11#define __INCORE_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040013#include <linux/fs.h>
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -050014#include <linux/workqueue.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040015
David Teiglandb3b94fa2006-01-16 16:50:04 +000016#define DIO_WAIT 0x00000010
17#define DIO_METADATA 0x00000020
David Teiglandb3b94fa2006-01-16 16:50:04 +000018#define DIO_ALL 0x00000100
19
20struct gfs2_log_operations;
21struct gfs2_log_element;
David Teiglandb3b94fa2006-01-16 16:50:04 +000022struct gfs2_holder;
23struct gfs2_glock;
David Teiglandb3b94fa2006-01-16 16:50:04 +000024struct gfs2_quota_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +000025struct gfs2_trans;
26struct gfs2_ail;
27struct gfs2_jdesc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000028struct gfs2_sbd;
29
30typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
31
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010032struct 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 */
36 u32 lh_blkno;
37 u32 lh_hash;
38};
39
David Teiglandb3b94fa2006-01-16 16:50:04 +000040/*
41 * Structure of operations that are associated with each
42 * type of element in the log.
43 */
44
45struct gfs2_log_operations {
46 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
David Teiglandb3b94fa2006-01-16 16:50:04 +000047 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,
Al Viro55167622006-10-13 21:47:13 -040050 struct gfs2_log_header_host *head, int pass);
David Teiglandb3b94fa2006-01-16 16:50:04 +000051 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
52 struct gfs2_log_descriptor *ld, __be64 *ptr,
53 int pass);
54 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
Steven Whitehouseb09e5932006-04-07 11:17:32 -040055 const char *lo_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +000056};
57
58struct gfs2_log_element {
59 struct list_head le_list;
Steven Whitehouseb09e5932006-04-07 11:17:32 -040060 const struct gfs2_log_operations *le_ops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000061};
62
63struct gfs2_bitmap {
64 struct buffer_head *bi_bh;
65 char *bi_clone;
Steven Whitehousecd915492006-09-04 12:49:07 -040066 u32 bi_offset;
67 u32 bi_start;
68 u32 bi_len;
David Teiglandb3b94fa2006-01-16 16:50:04 +000069};
70
71struct gfs2_rgrpd {
72 struct list_head rd_list; /* Link with superblock */
73 struct list_head rd_list_mru;
David Teiglandb3b94fa2006-01-16 16:50:04 +000074 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010075 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 */
Steven Whitehousecfc8b542008-11-04 10:25:13 +000080 u32 rd_free;
Steven Whitehouse73f74942008-11-04 10:32:57 +000081 u32 rd_free_clone;
82 u32 rd_dinodes;
Steven Whitehoused8b71f72008-11-04 10:19:03 +000083 u64 rd_igeneration;
David Teiglandb3b94fa2006-01-16 16:50:04 +000084 struct gfs2_bitmap *rd_bits;
Steven Whitehousef55ab262006-02-21 12:51:39 +000085 struct mutex rd_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +000086 struct gfs2_log_element rd_le;
David Teiglandb3b94fa2006-01-16 16:50:04 +000087 struct gfs2_sbd *rd_sbd;
Steven Whitehouse73f74942008-11-04 10:32:57 +000088 unsigned int rd_bh_count;
89 u32 rd_last_alloc;
Bob Peterson42d52e32008-01-28 18:38:07 -060090 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 */
Bob Petersoncf45b752008-01-31 10:31:39 -060093#define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
David Teiglandb3b94fa2006-01-16 16:50:04 +000094};
95
96enum gfs2_state_bits {
97 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +000098 BH_Escaped = BH_PrivateStart + 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +000099};
100
101BUFFER_FNS(Pinned, pinned)
102TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000103BUFFER_FNS(Escaped, escaped)
104TAS_BUFFER_FNS(Escaped, escaped)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000105
106struct gfs2_bufdata {
107 struct buffer_head *bd_bh;
108 struct gfs2_glock *bd_gl;
109
Steven Whitehouse82e86082007-09-02 15:39:43 +0100110 union {
111 struct list_head list_tr;
112 u64 blkno;
113 } u;
114#define bd_list_tr u.list_tr
115#define bd_blkno u.blkno
116
David Teiglandb3b94fa2006-01-16 16:50:04 +0000117 struct gfs2_log_element bd_le;
118
119 struct gfs2_ail *bd_ail;
120 struct list_head bd_ail_st_list;
121 struct list_head bd_ail_gl_list;
122};
123
David Teiglandb3b94fa2006-01-16 16:50:04 +0000124struct gfs2_glock_operations {
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500125 void (*go_xmote_th) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100126 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500127 void (*go_inval) (struct gfs2_glock *gl, int flags);
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000128 int (*go_demote_ok) (const struct gfs2_glock *gl);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500129 int (*go_lock) (struct gfs2_holder *gh);
130 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100131 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400132 const int go_type;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500133 const unsigned long go_min_hold_time;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000134};
135
136enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000137 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100138 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000139 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000140 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000141};
142
143struct gfs2_holder {
144 struct list_head gh_list;
145
146 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800147 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000148 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400149 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000150
151 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100152 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500153 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154};
155
156enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100157 GLF_LOCK = 1,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100158 GLF_DEMOTE = 3,
159 GLF_PENDING_DEMOTE = 4,
160 GLF_DEMOTE_IN_PROGRESS = 5,
161 GLF_DIRTY = 6,
162 GLF_LFLUSH = 7,
163 GLF_INVALIDATE_IN_PROGRESS = 8,
164 GLF_REPLY_PENDING = 9,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000165};
166
167struct gfs2_glock {
Steven Whitehouseb6397892006-09-12 10:10:01 -0400168 struct hlist_node gl_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000169 unsigned long gl_flags; /* GLF_... */
170 struct lm_lockname gl_name;
Steven Whitehouse16feb9f2006-09-13 10:43:37 -0400171 atomic_t gl_ref;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000172
173 spinlock_t gl_spin;
174
175 unsigned int gl_state;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100176 unsigned int gl_target;
177 unsigned int gl_reply;
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400178 unsigned int gl_hash;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000179 unsigned int gl_demote_state; /* state requested by remote node */
180 unsigned long gl_demote_time; /* time of first demote request */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000181 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000182
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400183 const struct gfs2_glock_operations *gl_ops;
Steven Whitehouse9b47c112006-09-08 10:17:58 -0400184 void *gl_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000185 char *gl_lvb;
186 atomic_t gl_lvb_count;
187
David Teiglandb3b94fa2006-01-16 16:50:04 +0000188 unsigned long gl_stamp;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500189 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000190 void *gl_object;
191
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000192 struct list_head gl_lru;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000193
194 struct gfs2_sbd *gl_sbd;
195
196 struct inode *gl_aspace;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000197 struct list_head gl_ail_list;
198 atomic_t gl_ail_count;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500199 struct delayed_work gl_work;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000200};
201
Steven Whitehouseda755fd2008-01-30 15:34:04 +0000202#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
203
David Teiglandb3b94fa2006-01-16 16:50:04 +0000204struct gfs2_alloc {
205 /* Quota stuff */
206
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400207 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
208 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400209 unsigned int al_qd_num;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000210
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400211 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
212 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000213
214 /* Filled in by gfs2_inplace_reserve() */
215
David Teiglandb3b94fa2006-01-16 16:50:04 +0000216 unsigned int al_line;
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400217 char *al_file;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000218 struct gfs2_holder al_ri_gh;
219 struct gfs2_holder al_rgd_gh;
220 struct gfs2_rgrpd *al_rgd;
221
David Teiglandb3b94fa2006-01-16 16:50:04 +0000222};
223
224enum {
Steven Whitehousebfded272006-11-01 16:05:38 -0500225 GIF_INVALID = 0,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000226 GIF_QD_LOCKED = 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000227 GIF_SW_PAGED = 3,
Bob Peterson091806e2008-04-29 12:35:48 -0500228 GIF_USER = 4, /* user inode, not metadata addr space */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000229};
230
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100231
David Teiglandb3b94fa2006-01-16 16:50:04 +0000232struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400233 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100234 u64 i_no_addr;
235 u64 i_no_formal_ino;
Steven Whitehousebcf0b5b2008-11-03 13:39:46 +0000236 u64 i_generation;
Steven Whitehouse3767ac22008-11-03 14:28:42 +0000237 u64 i_eattr;
Steven Whitehousec9e98882008-11-04 09:47:33 +0000238 loff_t i_disksize;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000239 unsigned long i_flags; /* GIF_... */
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400240 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000241 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000242 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000243 struct gfs2_alloc *i_alloc;
Steven Whitehousece276b02008-02-06 09:25:45 +0000244 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000245 struct rw_semaphore i_rw_mutex;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000246 struct list_head i_trunc_list;
Steven Whitehousead6203f2008-11-03 13:59:19 +0000247 u32 i_entries;
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000248 u32 i_diskflags;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000249 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000250 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000251};
252
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400253/*
254 * Since i_inode is the first element of struct gfs2_inode,
255 * this is effectively a cast.
256 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400257static inline struct gfs2_inode *GFS2_I(struct inode *inode)
258{
259 return container_of(inode, struct gfs2_inode, i_inode);
260}
261
Steven Whitehousebf36a712007-10-17 08:35:19 +0100262static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400263{
264 return inode->i_sb->s_fs_info;
265}
266
David Teiglandb3b94fa2006-01-16 16:50:04 +0000267struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000268 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000269 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000270};
271
David Teiglandb3b94fa2006-01-16 16:50:04 +0000272struct gfs2_revoke_replay {
273 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400274 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000275 unsigned int rr_where;
276};
277
278enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000279 QDF_USER = 0,
280 QDF_CHANGE = 1,
281 QDF_LOCKED = 2,
282};
283
284struct gfs2_quota_data {
285 struct list_head qd_list;
286 unsigned int qd_count;
287
Steven Whitehousecd915492006-09-04 12:49:07 -0400288 u32 qd_id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000289 unsigned long qd_flags; /* QDF_... */
290
Steven Whitehousecd915492006-09-04 12:49:07 -0400291 s64 qd_change;
292 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000293
294 unsigned int qd_slot;
295 unsigned int qd_slot_count;
296
297 struct buffer_head *qd_bh;
298 struct gfs2_quota_change *qd_bh_qc;
299 unsigned int qd_bh_count;
300
301 struct gfs2_glock *qd_gl;
302 struct gfs2_quota_lvb qd_qb;
303
Steven Whitehousecd915492006-09-04 12:49:07 -0400304 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000305 unsigned long qd_last_warn;
306 unsigned long qd_last_touched;
307};
308
David Teiglandb3b94fa2006-01-16 16:50:04 +0000309struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500310 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000311
312 unsigned int tr_blocks;
313 unsigned int tr_revokes;
314 unsigned int tr_reserved;
315
Steven Whitehousee317ffc2006-03-01 11:39:37 -0500316 struct gfs2_holder tr_t_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000317
318 int tr_touched;
319
320 unsigned int tr_num_buf;
321 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500322 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000323 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500324 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000325 struct list_head tr_list_buf;
326
327 unsigned int tr_num_revoke;
328 unsigned int tr_num_revoke_rm;
329};
330
331struct gfs2_ail {
332 struct list_head ai_list;
333
334 unsigned int ai_first;
335 struct list_head ai_ail1_list;
336 struct list_head ai_ail2_list;
337
Steven Whitehousecd915492006-09-04 12:49:07 -0400338 u64 ai_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000339};
340
Bob Petersonda6dd402007-12-11 18:49:21 -0600341struct gfs2_journal_extent {
342 struct list_head extent_list;
343
344 unsigned int lblock; /* First logical block */
345 u64 dblock; /* First disk block */
346 u64 blocks;
347};
348
David Teiglandb3b94fa2006-01-16 16:50:04 +0000349struct gfs2_jdesc {
350 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600351 struct list_head extent_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000352
Steven Whitehouse7359a192006-02-13 12:27:43 +0000353 struct inode *jd_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000354 unsigned int jd_jid;
355 int jd_dirty;
356
357 unsigned int jd_blocks;
358};
359
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100360struct gfs2_statfs_change_host {
361 s64 sc_total;
362 s64 sc_free;
363 s64 sc_dinodes;
364};
365
David Teiglandb3b94fa2006-01-16 16:50:04 +0000366#define GFS2_GLOCKD_DEFAULT 1
367#define GFS2_GLOCKD_MAX 16
368
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
373
374#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
375#define GFS2_DATA_WRITEBACK 1
376#define GFS2_DATA_ORDERED 2
377
378struct gfs2_args {
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100379 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 */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000394};
395
396struct gfs2_tune {
397 spinlock_t gt_spin;
398
David Teiglandb3b94fa2006-01-16 16:50:04 +0000399 unsigned int gt_incore_log_blocks;
400 unsigned int gt_log_flush_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000401
David Teiglandb3b94fa2006-01-16 16:50:04 +0000402 unsigned int gt_recoverd_secs;
403 unsigned int gt_logd_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000404
405 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
406 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
407 unsigned int gt_quota_scale_num; /* Numerator */
408 unsigned int gt_quota_scale_den; /* Denominator */
409 unsigned int gt_quota_cache_secs;
410 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000411 unsigned int gt_new_files_jdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000412 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000413 unsigned int gt_stall_secs; /* Detects trouble! */
414 unsigned int gt_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000415 unsigned int gt_statfs_quantum;
416 unsigned int gt_statfs_slow;
417};
418
David Teiglandb3b94fa2006-01-16 16:50:04 +0000419enum {
420 SDF_JOURNAL_CHECKED = 0,
421 SDF_JOURNAL_LIVE = 1,
422 SDF_SHUTDOWN = 2,
Steven Whitehouse254db572008-09-26 10:23:22 +0100423 SDF_NOBARRIERS = 3,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000424};
425
David Teiglandb3b94fa2006-01-16 16:50:04 +0000426#define GFS2_FSNAME_LEN 256
427
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100428struct gfs2_inum_host {
429 u64 no_formal_ino;
430 u64 no_addr;
431};
432
433struct gfs2_sb_host {
434 u32 sb_magic;
435 u32 sb_type;
436 u32 sb_format;
437
438 u32 sb_fs_format;
439 u32 sb_multihost_format;
440 u32 sb_bsize;
441 u32 sb_bsize_shift;
442
443 struct gfs2_inum_host sb_master_dir;
444 struct gfs2_inum_host sb_root_dir;
445
446 char sb_lockproto[GFS2_LOCKNAME_LEN];
447 char sb_locktable[GFS2_LOCKNAME_LEN];
448};
449
David Teiglandb3b94fa2006-01-16 16:50:04 +0000450struct gfs2_sbd {
451 struct super_block *sd_vfs;
452 struct kobject sd_kobj;
453 unsigned long sd_flags; /* SDF_... */
Al Virof50dfaf2006-10-13 20:45:02 -0400454 struct gfs2_sb_host sd_sb;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000455
456 /* Constants computed on mount */
457
Steven Whitehousecd915492006-09-04 12:49:07 -0400458 u32 sd_fsb2bb;
459 u32 sd_fsb2bb_shift;
460 u32 sd_diptrs; /* Number of pointers in a dinode */
461 u32 sd_inptrs; /* Number of pointers in a indirect block */
462 u32 sd_jbsize; /* Size of a journaled data block */
463 u32 sd_hash_bsize; /* sizeof(exhash block) */
464 u32 sd_hash_bsize_shift;
465 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
466 u32 sd_qc_per_block;
467 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
468 u32 sd_max_height; /* Max height of a file's metadata tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000469 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
Steven Whitehousecd915492006-09-04 12:49:07 -0400470 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000471 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
David Teiglandb3b94fa2006-01-16 16:50:04 +0000472
473 struct gfs2_args sd_args; /* Mount arguments */
474 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
475
476 /* Lock Stuff */
477
478 struct lm_lockstruct sd_lockstruct;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000479 struct gfs2_holder sd_live_gh;
480 struct gfs2_glock *sd_rename_gl;
481 struct gfs2_glock *sd_trans_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000482
483 /* Inode Stuff */
484
Steven Whitehouse9b8df982008-08-08 13:45:13 +0100485 struct dentry *sd_master_dir;
486 struct dentry *sd_root_dir;
487
Steven Whitehousef42faf42006-01-30 18:34:10 +0000488 struct inode *sd_jindex;
489 struct inode *sd_inum_inode;
490 struct inode *sd_statfs_inode;
491 struct inode *sd_ir_inode;
492 struct inode *sd_sc_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000493 struct inode *sd_qc_inode;
494 struct inode *sd_rindex;
495 struct inode *sd_quota_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000496
497 /* Inum stuff */
498
Steven Whitehousef55ab262006-02-21 12:51:39 +0000499 struct mutex sd_inum_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000500
501 /* StatFS stuff */
502
503 spinlock_t sd_statfs_spin;
Al Virobd209cc2006-10-13 23:43:19 -0400504 struct gfs2_statfs_change_host sd_statfs_master;
505 struct gfs2_statfs_change_host sd_statfs_local;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000506
507 /* Resource group stuff */
508
Bob Petersoncf45b752008-01-31 10:31:39 -0600509 int sd_rindex_uptodate;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000510 spinlock_t sd_rindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000511 struct mutex sd_rindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000512 struct list_head sd_rindex_list;
513 struct list_head sd_rindex_mru_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000514 struct gfs2_rgrpd *sd_rindex_forward;
515 unsigned int sd_rgrps;
516
517 /* Journal index stuff */
518
519 struct list_head sd_jindex_list;
520 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000521 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000522 unsigned int sd_journals;
523 unsigned long sd_jindex_refresh_time;
524
525 struct gfs2_jdesc *sd_jdesc;
526 struct gfs2_holder sd_journal_gh;
527 struct gfs2_holder sd_jinode_gh;
528
529 struct gfs2_holder sd_ir_gh;
530 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000531 struct gfs2_holder sd_qc_gh;
532
533 /* Daemon stuff */
534
David Teiglandb3b94fa2006-01-16 16:50:04 +0000535 struct task_struct *sd_recoverd_process;
536 struct task_struct *sd_logd_process;
537 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000538
David Teiglandb3b94fa2006-01-16 16:50:04 +0000539 /* Quota stuff */
540
541 struct list_head sd_quota_list;
542 atomic_t sd_quota_count;
543 spinlock_t sd_quota_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000544 struct mutex sd_quota_mutex;
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000545 wait_queue_head_t sd_quota_wait;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000546 struct list_head sd_trunc_list;
547 spinlock_t sd_trunc_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000548
549 unsigned int sd_quota_slots;
550 unsigned int sd_quota_chunks;
551 unsigned char **sd_quota_bitmap;
552
Steven Whitehousecd915492006-09-04 12:49:07 -0400553 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000554
555 /* Log stuff */
556
557 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000558
559 unsigned int sd_log_blks_reserved;
560 unsigned int sd_log_commited_buf;
Robert Peterson2332c442007-06-18 14:50:20 -0500561 unsigned int sd_log_commited_databuf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000562 unsigned int sd_log_commited_revoke;
563
David Teiglandb3b94fa2006-01-16 16:50:04 +0000564 unsigned int sd_log_num_buf;
565 unsigned int sd_log_num_revoke;
566 unsigned int sd_log_num_rg;
567 unsigned int sd_log_num_databuf;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000568
David Teiglandb3b94fa2006-01-16 16:50:04 +0000569 struct list_head sd_log_le_buf;
570 struct list_head sd_log_le_revoke;
571 struct list_head sd_log_le_rg;
572 struct list_head sd_log_le_databuf;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100573 struct list_head sd_log_le_ordered;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000574
Steven Whitehousefd041f02007-11-08 14:55:03 +0000575 atomic_t sd_log_blks_free;
Steven Whitehouse71b86f52006-03-28 14:14:04 -0500576 struct mutex sd_log_reserve_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000577
Steven Whitehousecd915492006-09-04 12:49:07 -0400578 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000579 unsigned int sd_log_head;
580 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000581 int sd_log_idle;
582
583 unsigned long sd_log_flush_time;
Steven Whitehouse484adff2006-03-29 09:12:12 -0500584 struct rw_semaphore sd_log_flush_lock;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100585 atomic_t sd_log_in_flight;
586 wait_queue_head_t sd_log_flush_wait;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000587
588 unsigned int sd_log_flush_head;
Steven Whitehousecd915492006-09-04 12:49:07 -0400589 u64 sd_log_flush_wrapped;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000590
591 struct list_head sd_ail1_list;
592 struct list_head sd_ail2_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400593 u64 sd_ail_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000594
595 /* Replay stuff */
596
597 struct list_head sd_revoke_list;
598 unsigned int sd_replay_tail;
599
600 unsigned int sd_found_blocks;
601 unsigned int sd_found_revokes;
602 unsigned int sd_replayed_blocks;
603
604 /* For quiescing the filesystem */
605
606 struct gfs2_holder sd_freeze_gh;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000607 struct mutex sd_freeze_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000608 unsigned int sd_freeze_count;
609
David Teiglandb3b94fa2006-01-16 16:50:04 +0000610 char sd_fsname[GFS2_FSNAME_LEN];
611 char sd_table_name[GFS2_FSNAME_LEN];
612 char sd_proto_name[GFS2_FSNAME_LEN];
613
614 /* Debugging crud */
615
616 unsigned long sd_last_warning;
Robert Peterson5f882092007-04-18 11:41:11 -0500617 struct dentry *debugfs_dir; /* debugfs directory */
618 struct dentry *debugfs_dentry_glocks; /* for debugfs */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000619};
620
621#endif /* __INCORE_DOT_H__ */
622