blob: 448697a5c462764c18ef977a1432291fc21cc049 [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
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010071struct gfs2_rgrp_host {
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010072 u32 rg_free;
73 u32 rg_dinodes;
74 u64 rg_igeneration;
75};
76
David Teiglandb3b94fa2006-01-16 16:50:04 +000077struct gfs2_rgrpd {
78 struct list_head rd_list; /* Link with superblock */
79 struct list_head rd_list_mru;
David Teiglandb3b94fa2006-01-16 16:50:04 +000080 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010081 u64 rd_addr; /* grp block disk address */
82 u64 rd_data0; /* first data location */
83 u32 rd_length; /* length of rgrp header in fs blocks */
84 u32 rd_data; /* num of data blocks in rgrp */
85 u32 rd_bitbytes; /* number of bytes in data bitmaps */
Al Viro68826662006-10-13 21:07:22 -040086 struct gfs2_rgrp_host rd_rg;
David Teiglandb3b94fa2006-01-16 16:50:04 +000087 struct gfs2_bitmap *rd_bits;
88 unsigned int rd_bh_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +000089 struct mutex rd_mutex;
Steven Whitehousecd915492006-09-04 12:49:07 -040090 u32 rd_free_clone;
David Teiglandb3b94fa2006-01-16 16:50:04 +000091 struct gfs2_log_element rd_le;
Steven Whitehouseac576cc2008-02-01 10:34:15 +000092 u32 rd_last_alloc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000093 struct gfs2_sbd *rd_sbd;
Bob Peterson42d52e32008-01-28 18:38:07 -060094 unsigned char rd_flags;
95#define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
96#define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
Bob Petersoncf45b752008-01-31 10:31:39 -060097#define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */
David Teiglandb3b94fa2006-01-16 16:50:04 +000098};
99
100enum gfs2_state_bits {
101 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +0000102 BH_Escaped = BH_PrivateStart + 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000103};
104
105BUFFER_FNS(Pinned, pinned)
106TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000107BUFFER_FNS(Escaped, escaped)
108TAS_BUFFER_FNS(Escaped, escaped)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000109
110struct gfs2_bufdata {
111 struct buffer_head *bd_bh;
112 struct gfs2_glock *bd_gl;
113
Steven Whitehouse82e86082007-09-02 15:39:43 +0100114 union {
115 struct list_head list_tr;
116 u64 blkno;
117 } u;
118#define bd_list_tr u.list_tr
119#define bd_blkno u.blkno
120
David Teiglandb3b94fa2006-01-16 16:50:04 +0000121 struct gfs2_log_element bd_le;
122
123 struct gfs2_ail *bd_ail;
124 struct list_head bd_ail_st_list;
125 struct list_head bd_ail_gl_list;
126};
127
David Teiglandb3b94fa2006-01-16 16:50:04 +0000128struct gfs2_glock_operations {
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500129 void (*go_xmote_th) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100130 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500131 void (*go_inval) (struct gfs2_glock *gl, int flags);
132 int (*go_demote_ok) (struct gfs2_glock *gl);
133 int (*go_lock) (struct gfs2_holder *gh);
134 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100135 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400136 const int go_type;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500137 const unsigned long go_min_hold_time;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000138};
139
140enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000141 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100142 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000143 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000144 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000145};
146
147struct gfs2_holder {
148 struct list_head gh_list;
149
150 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800151 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000152 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400153 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154
155 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100156 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500157 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000158};
159
160enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100161 GLF_LOCK = 1,
162 GLF_STICKY = 2,
163 GLF_DEMOTE = 3,
164 GLF_PENDING_DEMOTE = 4,
165 GLF_DEMOTE_IN_PROGRESS = 5,
166 GLF_DIRTY = 6,
167 GLF_LFLUSH = 7,
168 GLF_INVALIDATE_IN_PROGRESS = 8,
169 GLF_REPLY_PENDING = 9,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000170};
171
172struct gfs2_glock {
Steven Whitehouseb6397892006-09-12 10:10:01 -0400173 struct hlist_node gl_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000174 unsigned long gl_flags; /* GLF_... */
175 struct lm_lockname gl_name;
Steven Whitehouse16feb9f2006-09-13 10:43:37 -0400176 atomic_t gl_ref;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000177
178 spinlock_t gl_spin;
179
180 unsigned int gl_state;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100181 unsigned int gl_target;
182 unsigned int gl_reply;
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400183 unsigned int gl_hash;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000184 unsigned int gl_demote_state; /* state requested by remote node */
185 unsigned long gl_demote_time; /* time of first demote request */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000186 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000187
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400188 const struct gfs2_glock_operations *gl_ops;
Steven Whitehouse9b47c112006-09-08 10:17:58 -0400189 void *gl_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000190 char *gl_lvb;
191 atomic_t gl_lvb_count;
192
David Teiglandb3b94fa2006-01-16 16:50:04 +0000193 unsigned long gl_stamp;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500194 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000195 void *gl_object;
196
David Teiglandb3b94fa2006-01-16 16:50:04 +0000197 struct list_head gl_reclaim;
198
199 struct gfs2_sbd *gl_sbd;
200
201 struct inode *gl_aspace;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000202 struct list_head gl_ail_list;
203 atomic_t gl_ail_count;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500204 struct delayed_work gl_work;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000205};
206
Steven Whitehouseda755fd2008-01-30 15:34:04 +0000207#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
208
David Teiglandb3b94fa2006-01-16 16:50:04 +0000209struct gfs2_alloc {
210 /* Quota stuff */
211
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400212 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
213 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400214 unsigned int al_qd_num;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000215
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400216 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
217 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000218
219 /* Filled in by gfs2_inplace_reserve() */
220
David Teiglandb3b94fa2006-01-16 16:50:04 +0000221 unsigned int al_line;
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400222 char *al_file;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000223 struct gfs2_holder al_ri_gh;
224 struct gfs2_holder al_rgd_gh;
225 struct gfs2_rgrpd *al_rgd;
226
David Teiglandb3b94fa2006-01-16 16:50:04 +0000227};
228
229enum {
Steven Whitehousebfded272006-11-01 16:05:38 -0500230 GIF_INVALID = 0,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000231 GIF_QD_LOCKED = 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000232 GIF_SW_PAGED = 3,
Bob Peterson091806ed2008-04-29 12:35:48 -0500233 GIF_USER = 4, /* user inode, not metadata addr space */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000234};
235
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100236struct gfs2_dinode_host {
237 u64 di_size; /* number of bytes in file */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100238 u64 di_generation; /* generation number for NFS */
239 u32 di_flags; /* GFS2_DIF_... */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100240 /* These only apply to directories */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100241 u32 di_entries; /* The number of entries in the directory */
242 u64 di_eattr; /* extended attribute block number */
243};
244
David Teiglandb3b94fa2006-01-16 16:50:04 +0000245struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400246 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100247 u64 i_no_addr;
248 u64 i_no_formal_ino;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000249 unsigned long i_flags; /* GIF_... */
250
Al Viro5c6edb52006-10-13 20:33:01 -0400251 struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000252
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400253 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000254 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000255 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000256 struct gfs2_alloc *i_alloc;
Steven Whitehousece276b02008-02-06 09:25:45 +0000257 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000258 struct rw_semaphore i_rw_mutex;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000259 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000260 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000261};
262
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400263/*
264 * Since i_inode is the first element of struct gfs2_inode,
265 * this is effectively a cast.
266 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400267static inline struct gfs2_inode *GFS2_I(struct inode *inode)
268{
269 return container_of(inode, struct gfs2_inode, i_inode);
270}
271
Steven Whitehousebf36a712007-10-17 08:35:19 +0100272static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400273{
274 return inode->i_sb->s_fs_info;
275}
276
David Teiglandb3b94fa2006-01-16 16:50:04 +0000277struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000278 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000279 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000280};
281
David Teiglandb3b94fa2006-01-16 16:50:04 +0000282struct gfs2_revoke_replay {
283 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400284 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000285 unsigned int rr_where;
286};
287
288enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000289 QDF_USER = 0,
290 QDF_CHANGE = 1,
291 QDF_LOCKED = 2,
292};
293
294struct gfs2_quota_data {
295 struct list_head qd_list;
296 unsigned int qd_count;
297
Steven Whitehousecd915492006-09-04 12:49:07 -0400298 u32 qd_id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000299 unsigned long qd_flags; /* QDF_... */
300
Steven Whitehousecd915492006-09-04 12:49:07 -0400301 s64 qd_change;
302 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000303
304 unsigned int qd_slot;
305 unsigned int qd_slot_count;
306
307 struct buffer_head *qd_bh;
308 struct gfs2_quota_change *qd_bh_qc;
309 unsigned int qd_bh_count;
310
311 struct gfs2_glock *qd_gl;
312 struct gfs2_quota_lvb qd_qb;
313
Steven Whitehousecd915492006-09-04 12:49:07 -0400314 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000315 unsigned long qd_last_warn;
316 unsigned long qd_last_touched;
317};
318
David Teiglandb3b94fa2006-01-16 16:50:04 +0000319struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500320 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000321
322 unsigned int tr_blocks;
323 unsigned int tr_revokes;
324 unsigned int tr_reserved;
325
Steven Whitehousee317ffc2006-03-01 11:39:37 -0500326 struct gfs2_holder tr_t_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000327
328 int tr_touched;
329
330 unsigned int tr_num_buf;
331 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500332 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000333 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500334 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000335 struct list_head tr_list_buf;
336
337 unsigned int tr_num_revoke;
338 unsigned int tr_num_revoke_rm;
339};
340
341struct gfs2_ail {
342 struct list_head ai_list;
343
344 unsigned int ai_first;
345 struct list_head ai_ail1_list;
346 struct list_head ai_ail2_list;
347
Steven Whitehousecd915492006-09-04 12:49:07 -0400348 u64 ai_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000349};
350
Bob Petersonda6dd402007-12-11 18:49:21 -0600351struct gfs2_journal_extent {
352 struct list_head extent_list;
353
354 unsigned int lblock; /* First logical block */
355 u64 dblock; /* First disk block */
356 u64 blocks;
357};
358
David Teiglandb3b94fa2006-01-16 16:50:04 +0000359struct gfs2_jdesc {
360 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600361 struct list_head extent_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000362
Steven Whitehouse7359a192006-02-13 12:27:43 +0000363 struct inode *jd_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000364 unsigned int jd_jid;
365 int jd_dirty;
366
367 unsigned int jd_blocks;
368};
369
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100370struct gfs2_statfs_change_host {
371 s64 sc_total;
372 s64 sc_free;
373 s64 sc_dinodes;
374};
375
David Teiglandb3b94fa2006-01-16 16:50:04 +0000376#define GFS2_GLOCKD_DEFAULT 1
377#define GFS2_GLOCKD_MAX 16
378
379#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
380#define GFS2_QUOTA_OFF 0
381#define GFS2_QUOTA_ACCOUNT 1
382#define GFS2_QUOTA_ON 2
383
384#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
385#define GFS2_DATA_WRITEBACK 1
386#define GFS2_DATA_ORDERED 2
387
388struct gfs2_args {
389 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
390 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
391 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
392 int ar_spectator; /* Don't get a journal because we're always RO */
393 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
394 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
395 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
396 int ar_debug; /* Oops on errors instead of trying to be graceful */
397 int ar_upgrade; /* Upgrade ondisk/multihost format */
398 unsigned int ar_num_glockd; /* Number of glockd threads */
399 int ar_posix_acl; /* Enable posix acls */
400 int ar_quota; /* off/account/on */
401 int ar_suiddir; /* suiddir support */
402 int ar_data; /* ordered/writeback */
403};
404
405struct gfs2_tune {
406 spinlock_t gt_spin;
407
David Teiglandb3b94fa2006-01-16 16:50:04 +0000408 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
409 unsigned int gt_incore_log_blocks;
410 unsigned int gt_log_flush_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000411
David Teiglandb3b94fa2006-01-16 16:50:04 +0000412 unsigned int gt_recoverd_secs;
413 unsigned int gt_logd_secs;
414 unsigned int gt_quotad_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000415
416 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
417 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
418 unsigned int gt_quota_scale_num; /* Numerator */
419 unsigned int gt_quota_scale_den; /* Denominator */
420 unsigned int gt_quota_cache_secs;
421 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
422 unsigned int gt_atime_quantum; /* Min secs between atime updates */
423 unsigned int gt_new_files_jdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000424 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000425 unsigned int gt_stall_secs; /* Detects trouble! */
426 unsigned int gt_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000427 unsigned int gt_statfs_quantum;
428 unsigned int gt_statfs_slow;
429};
430
David Teiglandb3b94fa2006-01-16 16:50:04 +0000431enum {
432 SDF_JOURNAL_CHECKED = 0,
433 SDF_JOURNAL_LIVE = 1,
434 SDF_SHUTDOWN = 2,
435 SDF_NOATIME = 3,
436};
437
David Teiglandb3b94fa2006-01-16 16:50:04 +0000438#define GFS2_FSNAME_LEN 256
439
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100440struct gfs2_inum_host {
441 u64 no_formal_ino;
442 u64 no_addr;
443};
444
445struct gfs2_sb_host {
446 u32 sb_magic;
447 u32 sb_type;
448 u32 sb_format;
449
450 u32 sb_fs_format;
451 u32 sb_multihost_format;
452 u32 sb_bsize;
453 u32 sb_bsize_shift;
454
455 struct gfs2_inum_host sb_master_dir;
456 struct gfs2_inum_host sb_root_dir;
457
458 char sb_lockproto[GFS2_LOCKNAME_LEN];
459 char sb_locktable[GFS2_LOCKNAME_LEN];
460};
461
David Teiglandb3b94fa2006-01-16 16:50:04 +0000462struct gfs2_sbd {
463 struct super_block *sd_vfs;
Abhijith Das86384602006-08-25 11:13:37 -0500464 struct super_block *sd_vfs_meta;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000465 struct kobject sd_kobj;
466 unsigned long sd_flags; /* SDF_... */
Al Virof50dfaf2006-10-13 20:45:02 -0400467 struct gfs2_sb_host sd_sb;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000468
469 /* Constants computed on mount */
470
Steven Whitehousecd915492006-09-04 12:49:07 -0400471 u32 sd_fsb2bb;
472 u32 sd_fsb2bb_shift;
473 u32 sd_diptrs; /* Number of pointers in a dinode */
474 u32 sd_inptrs; /* Number of pointers in a indirect block */
475 u32 sd_jbsize; /* Size of a journaled data block */
476 u32 sd_hash_bsize; /* sizeof(exhash block) */
477 u32 sd_hash_bsize_shift;
478 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
479 u32 sd_qc_per_block;
480 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
481 u32 sd_max_height; /* Max height of a file's metadata tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000482 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
Steven Whitehousecd915492006-09-04 12:49:07 -0400483 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000484 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
David Teiglandb3b94fa2006-01-16 16:50:04 +0000485
486 struct gfs2_args sd_args; /* Mount arguments */
487 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
488
489 /* Lock Stuff */
490
491 struct lm_lockstruct sd_lockstruct;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000492 struct list_head sd_reclaim_list;
493 spinlock_t sd_reclaim_lock;
494 wait_queue_head_t sd_reclaim_wq;
495 atomic_t sd_reclaim_count;
496 struct gfs2_holder sd_live_gh;
497 struct gfs2_glock *sd_rename_gl;
498 struct gfs2_glock *sd_trans_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000499
500 /* Inode Stuff */
501
Steven Whitehousef42faf42006-01-30 18:34:10 +0000502 struct inode *sd_master_dir;
503 struct inode *sd_jindex;
504 struct inode *sd_inum_inode;
505 struct inode *sd_statfs_inode;
506 struct inode *sd_ir_inode;
507 struct inode *sd_sc_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000508 struct inode *sd_qc_inode;
509 struct inode *sd_rindex;
510 struct inode *sd_quota_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000511
512 /* Inum stuff */
513
Steven Whitehousef55ab262006-02-21 12:51:39 +0000514 struct mutex sd_inum_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000515
516 /* StatFS stuff */
517
518 spinlock_t sd_statfs_spin;
Al Virobd209cc2006-10-13 23:43:19 -0400519 struct gfs2_statfs_change_host sd_statfs_master;
520 struct gfs2_statfs_change_host sd_statfs_local;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000521 unsigned long sd_statfs_sync_time;
522
523 /* Resource group stuff */
524
Bob Petersoncf45b752008-01-31 10:31:39 -0600525 int sd_rindex_uptodate;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000526 spinlock_t sd_rindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000527 struct mutex sd_rindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000528 struct list_head sd_rindex_list;
529 struct list_head sd_rindex_mru_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000530 struct gfs2_rgrpd *sd_rindex_forward;
531 unsigned int sd_rgrps;
532
533 /* Journal index stuff */
534
535 struct list_head sd_jindex_list;
536 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000537 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000538 unsigned int sd_journals;
539 unsigned long sd_jindex_refresh_time;
540
541 struct gfs2_jdesc *sd_jdesc;
542 struct gfs2_holder sd_journal_gh;
543 struct gfs2_holder sd_jinode_gh;
544
545 struct gfs2_holder sd_ir_gh;
546 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000547 struct gfs2_holder sd_qc_gh;
548
549 /* Daemon stuff */
550
David Teiglandb3b94fa2006-01-16 16:50:04 +0000551 struct task_struct *sd_recoverd_process;
552 struct task_struct *sd_logd_process;
553 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000554 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
555 unsigned int sd_glockd_num;
556
David Teiglandb3b94fa2006-01-16 16:50:04 +0000557 /* Quota stuff */
558
559 struct list_head sd_quota_list;
560 atomic_t sd_quota_count;
561 spinlock_t sd_quota_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000562 struct mutex sd_quota_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000563
564 unsigned int sd_quota_slots;
565 unsigned int sd_quota_chunks;
566 unsigned char **sd_quota_bitmap;
567
Steven Whitehousecd915492006-09-04 12:49:07 -0400568 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000569 unsigned long sd_quota_sync_time;
570
571 /* Log stuff */
572
573 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000574
575 unsigned int sd_log_blks_reserved;
576 unsigned int sd_log_commited_buf;
Robert Peterson2332c442007-06-18 14:50:20 -0500577 unsigned int sd_log_commited_databuf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000578 unsigned int sd_log_commited_revoke;
579
David Teiglandb3b94fa2006-01-16 16:50:04 +0000580 unsigned int sd_log_num_buf;
581 unsigned int sd_log_num_revoke;
582 unsigned int sd_log_num_rg;
583 unsigned int sd_log_num_databuf;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000584
David Teiglandb3b94fa2006-01-16 16:50:04 +0000585 struct list_head sd_log_le_buf;
586 struct list_head sd_log_le_revoke;
587 struct list_head sd_log_le_rg;
588 struct list_head sd_log_le_databuf;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100589 struct list_head sd_log_le_ordered;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000590
Steven Whitehousefd041f02007-11-08 14:55:03 +0000591 atomic_t sd_log_blks_free;
Steven Whitehouse71b86f52006-03-28 14:14:04 -0500592 struct mutex sd_log_reserve_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000593
Steven Whitehousecd915492006-09-04 12:49:07 -0400594 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000595 unsigned int sd_log_head;
596 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000597 int sd_log_idle;
598
599 unsigned long sd_log_flush_time;
Steven Whitehouse484adff2006-03-29 09:12:12 -0500600 struct rw_semaphore sd_log_flush_lock;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100601 atomic_t sd_log_in_flight;
602 wait_queue_head_t sd_log_flush_wait;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000603
604 unsigned int sd_log_flush_head;
Steven Whitehousecd915492006-09-04 12:49:07 -0400605 u64 sd_log_flush_wrapped;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000606
607 struct list_head sd_ail1_list;
608 struct list_head sd_ail2_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400609 u64 sd_ail_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000610
611 /* Replay stuff */
612
613 struct list_head sd_revoke_list;
614 unsigned int sd_replay_tail;
615
616 unsigned int sd_found_blocks;
617 unsigned int sd_found_revokes;
618 unsigned int sd_replayed_blocks;
619
620 /* For quiescing the filesystem */
621
622 struct gfs2_holder sd_freeze_gh;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000623 struct mutex sd_freeze_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000624 unsigned int sd_freeze_count;
625
626 /* Counters */
627
David Teiglandb3b94fa2006-01-16 16:50:04 +0000628 atomic_t sd_reclaimed;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000629
630 char sd_fsname[GFS2_FSNAME_LEN];
631 char sd_table_name[GFS2_FSNAME_LEN];
632 char sd_proto_name[GFS2_FSNAME_LEN];
633
634 /* Debugging crud */
635
636 unsigned long sd_last_warning;
Abhijith Das86384602006-08-25 11:13:37 -0500637 struct vfsmount *sd_gfs2mnt;
Robert Peterson5f882092007-04-18 11:41:11 -0500638 struct dentry *debugfs_dir; /* debugfs directory */
639 struct dentry *debugfs_dentry_glocks; /* for debugfs */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000640};
641
642#endif /* __INCORE_DOT_H__ */
643