blob: bc0ad158e6b4925bc22579d9dff295b1b9fa22f6 [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 Whitehousefe64d512009-05-19 10:01:18 +010015#include <linux/slow-work.h>
Steven Whitehousef057f6c2009-01-12 10:43:39 +000016#include <linux/dlm.h>
17#include <linux/buffer_head.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040018
David Teiglandb3b94fa2006-01-16 16:50:04 +000019#define DIO_WAIT 0x00000010
20#define DIO_METADATA 0x00000020
David Teiglandb3b94fa2006-01-16 16:50:04 +000021#define DIO_ALL 0x00000100
22
23struct gfs2_log_operations;
24struct gfs2_log_element;
David Teiglandb3b94fa2006-01-16 16:50:04 +000025struct gfs2_holder;
26struct gfs2_glock;
David Teiglandb3b94fa2006-01-16 16:50:04 +000027struct gfs2_quota_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +000028struct gfs2_trans;
29struct gfs2_ail;
30struct gfs2_jdesc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000031struct gfs2_sbd;
Steven Whitehousef057f6c2009-01-12 10:43:39 +000032struct lm_lockops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000033
34typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
35
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010036struct gfs2_log_header_host {
37 u64 lh_sequence; /* Sequence number of this transaction */
38 u32 lh_flags; /* GFS2_LOG_HEAD_... */
39 u32 lh_tail; /* Block number of log tail */
40 u32 lh_blkno;
41 u32 lh_hash;
42};
43
David Teiglandb3b94fa2006-01-16 16:50:04 +000044/*
45 * Structure of operations that are associated with each
46 * type of element in the log.
47 */
48
49struct gfs2_log_operations {
50 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
David Teiglandb3b94fa2006-01-16 16:50:04 +000051 void (*lo_before_commit) (struct gfs2_sbd *sdp);
52 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
53 void (*lo_before_scan) (struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -040054 struct gfs2_log_header_host *head, int pass);
David Teiglandb3b94fa2006-01-16 16:50:04 +000055 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
56 struct gfs2_log_descriptor *ld, __be64 *ptr,
57 int pass);
58 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
Steven Whitehouseb09e5932006-04-07 11:17:32 -040059 const char *lo_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +000060};
61
62struct gfs2_log_element {
63 struct list_head le_list;
Steven Whitehouseb09e5932006-04-07 11:17:32 -040064 const struct gfs2_log_operations *le_ops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000065};
66
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010067#define GBF_FULL 1
68
David Teiglandb3b94fa2006-01-16 16:50:04 +000069struct gfs2_bitmap {
70 struct buffer_head *bi_bh;
71 char *bi_clone;
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010072 unsigned long bi_flags;
Steven Whitehousecd915492006-09-04 12:49:07 -040073 u32 bi_offset;
74 u32 bi_start;
75 u32 bi_len;
David Teiglandb3b94fa2006-01-16 16:50:04 +000076};
77
78struct gfs2_rgrpd {
79 struct list_head rd_list; /* Link with superblock */
80 struct list_head rd_list_mru;
David Teiglandb3b94fa2006-01-16 16:50:04 +000081 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010082 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 */
Steven Whitehousecfc8b542008-11-04 10:25:13 +000087 u32 rd_free;
Steven Whitehouse73f74942008-11-04 10:32:57 +000088 u32 rd_free_clone;
89 u32 rd_dinodes;
Steven Whitehoused8b71f72008-11-04 10:19:03 +000090 u64 rd_igeneration;
David Teiglandb3b94fa2006-01-16 16:50:04 +000091 struct gfs2_bitmap *rd_bits;
Steven Whitehousef55ab262006-02-21 12:51:39 +000092 struct mutex rd_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +000093 struct gfs2_log_element rd_le;
David Teiglandb3b94fa2006-01-16 16:50:04 +000094 struct gfs2_sbd *rd_sbd;
Steven Whitehouse73f74942008-11-04 10:32:57 +000095 unsigned int rd_bh_count;
96 u32 rd_last_alloc;
Steven Whitehouse1ce97e52009-05-21 15:18:19 +010097 u32 rd_flags;
Steven Whitehouse09010972009-05-20 10:48:47 +010098#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
99#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
100#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
101#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000102};
103
104enum gfs2_state_bits {
105 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +0000106 BH_Escaped = BH_PrivateStart + 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000107};
108
109BUFFER_FNS(Pinned, pinned)
110TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000111BUFFER_FNS(Escaped, escaped)
112TAS_BUFFER_FNS(Escaped, escaped)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000113
114struct gfs2_bufdata {
115 struct buffer_head *bd_bh;
116 struct gfs2_glock *bd_gl;
117
Steven Whitehouse82e86082007-09-02 15:39:43 +0100118 union {
119 struct list_head list_tr;
120 u64 blkno;
121 } u;
122#define bd_list_tr u.list_tr
123#define bd_blkno u.blkno
124
David Teiglandb3b94fa2006-01-16 16:50:04 +0000125 struct gfs2_log_element bd_le;
126
127 struct gfs2_ail *bd_ail;
128 struct list_head bd_ail_st_list;
129 struct list_head bd_ail_gl_list;
130};
131
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000132/*
133 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
134 * prefix of lock_dlm_ gets awkward.
135 */
136
137#define GDLM_STRNAME_BYTES 25
138#define GDLM_LVB_SIZE 32
139
140enum {
141 DFL_BLOCK_LOCKS = 0,
142};
143
144struct lm_lockname {
145 u64 ln_number;
146 unsigned int ln_type;
147};
148
149#define lm_name_equal(name1, name2) \
150 (((name1)->ln_number == (name2)->ln_number) && \
151 ((name1)->ln_type == (name2)->ln_type))
152
153
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154struct gfs2_glock_operations {
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500155 void (*go_xmote_th) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100156 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500157 void (*go_inval) (struct gfs2_glock *gl, int flags);
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000158 int (*go_demote_ok) (const struct gfs2_glock *gl);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500159 int (*go_lock) (struct gfs2_holder *gh);
160 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100161 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500162 void (*go_callback) (struct gfs2_glock *gl);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400163 const int go_type;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500164 const unsigned long go_min_hold_time;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000165};
166
167enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000168 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100169 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000170 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000171 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000172};
173
174struct gfs2_holder {
175 struct list_head gh_list;
176
177 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800178 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000179 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400180 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000181
182 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100183 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500184 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000185};
186
187enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100188 GLF_LOCK = 1,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100189 GLF_DEMOTE = 3,
190 GLF_PENDING_DEMOTE = 4,
191 GLF_DEMOTE_IN_PROGRESS = 5,
192 GLF_DIRTY = 6,
193 GLF_LFLUSH = 7,
194 GLF_INVALIDATE_IN_PROGRESS = 8,
195 GLF_REPLY_PENDING = 9,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000196 GLF_INITIAL = 10,
197 GLF_FROZEN = 11,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000198};
199
200struct gfs2_glock {
Steven Whitehouseb6397892006-09-12 10:10:01 -0400201 struct hlist_node gl_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000202 unsigned long gl_flags; /* GLF_... */
203 struct lm_lockname gl_name;
Steven Whitehouse16feb9f2006-09-13 10:43:37 -0400204 atomic_t gl_ref;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000205
206 spinlock_t gl_spin;
207
208 unsigned int gl_state;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100209 unsigned int gl_target;
210 unsigned int gl_reply;
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400211 unsigned int gl_hash;
Benjamin Marzinski02ffad082009-03-06 10:03:20 -0600212 unsigned int gl_req;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000213 unsigned int gl_demote_state; /* state requested by remote node */
214 unsigned long gl_demote_time; /* time of first demote request */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000215 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000216
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400217 const struct gfs2_glock_operations *gl_ops;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000218 char gl_strname[GDLM_STRNAME_BYTES];
219 struct dlm_lksb gl_lksb;
220 char gl_lvb[32];
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500221 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000222 void *gl_object;
223
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000224 struct list_head gl_lru;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000225
226 struct gfs2_sbd *gl_sbd;
227
228 struct inode *gl_aspace;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000229 struct list_head gl_ail_list;
230 atomic_t gl_ail_count;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500231 struct delayed_work gl_work;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500232 struct work_struct gl_delete;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000233};
234
Steven Whitehouseda755fd2008-01-30 15:34:04 +0000235#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
236
David Teiglandb3b94fa2006-01-16 16:50:04 +0000237struct gfs2_alloc {
238 /* Quota stuff */
239
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400240 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
241 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400242 unsigned int al_qd_num;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000243
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400244 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
245 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000246
247 /* Filled in by gfs2_inplace_reserve() */
248
David Teiglandb3b94fa2006-01-16 16:50:04 +0000249 unsigned int al_line;
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400250 char *al_file;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000251 struct gfs2_holder al_ri_gh;
252 struct gfs2_holder al_rgd_gh;
253 struct gfs2_rgrpd *al_rgd;
254
David Teiglandb3b94fa2006-01-16 16:50:04 +0000255};
256
257enum {
Steven Whitehousebfded272006-11-01 16:05:38 -0500258 GIF_INVALID = 0,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000259 GIF_QD_LOCKED = 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000260 GIF_SW_PAGED = 3,
Bob Peterson091806ed2008-04-29 12:35:48 -0500261 GIF_USER = 4, /* user inode, not metadata addr space */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000262};
263
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100264
David Teiglandb3b94fa2006-01-16 16:50:04 +0000265struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400266 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100267 u64 i_no_addr;
268 u64 i_no_formal_ino;
Steven Whitehousebcf0b5b2008-11-03 13:39:46 +0000269 u64 i_generation;
Steven Whitehouse3767ac22008-11-03 14:28:42 +0000270 u64 i_eattr;
Steven Whitehousec9e98882008-11-04 09:47:33 +0000271 loff_t i_disksize;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000272 unsigned long i_flags; /* GIF_... */
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400273 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000274 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000275 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000276 struct gfs2_alloc *i_alloc;
Steven Whitehousece276b02008-02-06 09:25:45 +0000277 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000278 struct rw_semaphore i_rw_mutex;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000279 struct list_head i_trunc_list;
Steven Whitehousead6203f2008-11-03 13:59:19 +0000280 u32 i_entries;
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000281 u32 i_diskflags;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000282 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000283 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000284};
285
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400286/*
287 * Since i_inode is the first element of struct gfs2_inode,
288 * this is effectively a cast.
289 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400290static inline struct gfs2_inode *GFS2_I(struct inode *inode)
291{
292 return container_of(inode, struct gfs2_inode, i_inode);
293}
294
Steven Whitehousebf36a712007-10-17 08:35:19 +0100295static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400296{
297 return inode->i_sb->s_fs_info;
298}
299
David Teiglandb3b94fa2006-01-16 16:50:04 +0000300struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000301 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000302 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000303};
304
David Teiglandb3b94fa2006-01-16 16:50:04 +0000305struct gfs2_revoke_replay {
306 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400307 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000308 unsigned int rr_where;
309};
310
311enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000312 QDF_USER = 0,
313 QDF_CHANGE = 1,
314 QDF_LOCKED = 2,
315};
316
317struct gfs2_quota_data {
318 struct list_head qd_list;
Abhijith Das0a7ab792009-01-07 16:03:37 -0600319 struct list_head qd_reclaim;
320
321 atomic_t qd_count;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000322
Steven Whitehousecd915492006-09-04 12:49:07 -0400323 u32 qd_id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000324 unsigned long qd_flags; /* QDF_... */
325
Steven Whitehousecd915492006-09-04 12:49:07 -0400326 s64 qd_change;
327 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000328
329 unsigned int qd_slot;
330 unsigned int qd_slot_count;
331
332 struct buffer_head *qd_bh;
333 struct gfs2_quota_change *qd_bh_qc;
334 unsigned int qd_bh_count;
335
336 struct gfs2_glock *qd_gl;
337 struct gfs2_quota_lvb qd_qb;
338
Steven Whitehousecd915492006-09-04 12:49:07 -0400339 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000340 unsigned long qd_last_warn;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000341};
342
David Teiglandb3b94fa2006-01-16 16:50:04 +0000343struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500344 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000345
346 unsigned int tr_blocks;
347 unsigned int tr_revokes;
348 unsigned int tr_reserved;
349
Steven Whitehousee317ffc2006-03-01 11:39:37 -0500350 struct gfs2_holder tr_t_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000351
352 int tr_touched;
353
354 unsigned int tr_num_buf;
355 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500356 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000357 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500358 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000359 struct list_head tr_list_buf;
360
361 unsigned int tr_num_revoke;
362 unsigned int tr_num_revoke_rm;
363};
364
365struct gfs2_ail {
366 struct list_head ai_list;
367
368 unsigned int ai_first;
369 struct list_head ai_ail1_list;
370 struct list_head ai_ail2_list;
371
Steven Whitehousecd915492006-09-04 12:49:07 -0400372 u64 ai_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000373};
374
Bob Petersonda6dd402007-12-11 18:49:21 -0600375struct gfs2_journal_extent {
376 struct list_head extent_list;
377
378 unsigned int lblock; /* First logical block */
379 u64 dblock; /* First disk block */
380 u64 blocks;
381};
382
David Teiglandb3b94fa2006-01-16 16:50:04 +0000383struct gfs2_jdesc {
384 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600385 struct list_head extent_list;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100386 struct slow_work jd_work;
Steven Whitehouse7359a192006-02-13 12:27:43 +0000387 struct inode *jd_inode;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100388 unsigned long jd_flags;
389#define JDF_RECOVERY 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000390 unsigned int jd_jid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000391 unsigned int jd_blocks;
392};
393
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100394struct gfs2_statfs_change_host {
395 s64 sc_total;
396 s64 sc_free;
397 s64 sc_dinodes;
398};
399
David Teiglandb3b94fa2006-01-16 16:50:04 +0000400#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
401#define GFS2_QUOTA_OFF 0
402#define GFS2_QUOTA_ACCOUNT 1
403#define GFS2_QUOTA_ON 2
404
405#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
406#define GFS2_DATA_WRITEBACK 1
407#define GFS2_DATA_ORDERED 2
408
Bob Petersond34843d2009-08-24 10:44:18 +0100409#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
410#define GFS2_ERRORS_WITHDRAW 0
411#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
412#define GFS2_ERRORS_RO 2 /* place holder for future feature */
413#define GFS2_ERRORS_PANIC 3
414
David Teiglandb3b94fa2006-01-16 16:50:04 +0000415struct gfs2_args {
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100416 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
417 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
418 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
419 unsigned int ar_spectator:1; /* Don't get a journal */
420 unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */
421 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
422 unsigned int ar_localcaching:1; /* Local caching */
423 unsigned int ar_debug:1; /* Oops on errors */
424 unsigned int ar_upgrade:1; /* Upgrade ondisk format */
425 unsigned int ar_posix_acl:1; /* Enable posix acls */
426 unsigned int ar_quota:2; /* off/account/on */
427 unsigned int ar_suiddir:1; /* suiddir support */
428 unsigned int ar_data:2; /* ordered/writeback */
429 unsigned int ar_meta:1; /* mount metafs */
Steven Whitehousef15ab562009-02-09 09:25:01 +0000430 unsigned int ar_discard:1; /* discard requests */
Bob Petersond34843d2009-08-24 10:44:18 +0100431 unsigned int ar_errors:2; /* errors=withdraw | panic */
Christoph Hellwigf25934c2009-10-30 08:03:27 +0100432 unsigned int ar_nobarrier:1; /* do not send barriers */
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100433 int ar_commit; /* Commit interval */
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500434 int ar_statfs_quantum; /* The fast statfs interval */
435 int ar_quota_quantum; /* The quota interval */
436 int ar_statfs_percent; /* The % change to force sync */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000437};
438
439struct gfs2_tune {
440 spinlock_t gt_spin;
441
David Teiglandb3b94fa2006-01-16 16:50:04 +0000442 unsigned int gt_incore_log_blocks;
443 unsigned int gt_log_flush_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000444
David Teiglandb3b94fa2006-01-16 16:50:04 +0000445 unsigned int gt_logd_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000446
447 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
448 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
449 unsigned int gt_quota_scale_num; /* Numerator */
450 unsigned int gt_quota_scale_den; /* Denominator */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000451 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000452 unsigned int gt_new_files_jdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000453 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000454 unsigned int gt_stall_secs; /* Detects trouble! */
455 unsigned int gt_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000456 unsigned int gt_statfs_quantum;
457 unsigned int gt_statfs_slow;
458};
459
David Teiglandb3b94fa2006-01-16 16:50:04 +0000460enum {
461 SDF_JOURNAL_CHECKED = 0,
462 SDF_JOURNAL_LIVE = 1,
463 SDF_SHUTDOWN = 2,
Steven Whitehouse254db572008-09-26 10:23:22 +0100464 SDF_NOBARRIERS = 3,
Steven Whitehousefe64d512009-05-19 10:01:18 +0100465 SDF_NORECOVERY = 4,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000466};
467
David Teiglandb3b94fa2006-01-16 16:50:04 +0000468#define GFS2_FSNAME_LEN 256
469
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100470struct gfs2_inum_host {
471 u64 no_formal_ino;
472 u64 no_addr;
473};
474
475struct gfs2_sb_host {
476 u32 sb_magic;
477 u32 sb_type;
478 u32 sb_format;
479
480 u32 sb_fs_format;
481 u32 sb_multihost_format;
482 u32 sb_bsize;
483 u32 sb_bsize_shift;
484
485 struct gfs2_inum_host sb_master_dir;
486 struct gfs2_inum_host sb_root_dir;
487
488 char sb_lockproto[GFS2_LOCKNAME_LEN];
489 char sb_locktable[GFS2_LOCKNAME_LEN];
Steven Whitehouse02e3cc72009-02-10 13:48:30 +0000490 u8 sb_uuid[16];
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100491};
492
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000493/*
494 * lm_mount() return values
495 *
496 * ls_jid - the journal ID this node should use
497 * ls_first - this node is the first to mount the file system
498 * ls_lockspace - lock module's context for this file system
499 * ls_ops - lock module's functions
500 */
501
502struct lm_lockstruct {
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000503 unsigned int ls_jid;
504 unsigned int ls_first;
505 unsigned int ls_first_done;
506 unsigned int ls_nodir;
507 const struct lm_lockops *ls_ops;
508 unsigned long ls_flags;
509 dlm_lockspace_t *ls_dlm;
510
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000511 int ls_recover_jid_done;
512 int ls_recover_jid_status;
513};
514
David Teiglandb3b94fa2006-01-16 16:50:04 +0000515struct gfs2_sbd {
516 struct super_block *sd_vfs;
517 struct kobject sd_kobj;
518 unsigned long sd_flags; /* SDF_... */
Al Virof50dfaf2006-10-13 20:45:02 -0400519 struct gfs2_sb_host sd_sb;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000520
521 /* Constants computed on mount */
522
Steven Whitehousecd915492006-09-04 12:49:07 -0400523 u32 sd_fsb2bb;
524 u32 sd_fsb2bb_shift;
525 u32 sd_diptrs; /* Number of pointers in a dinode */
526 u32 sd_inptrs; /* Number of pointers in a indirect block */
527 u32 sd_jbsize; /* Size of a journaled data block */
528 u32 sd_hash_bsize; /* sizeof(exhash block) */
529 u32 sd_hash_bsize_shift;
530 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
531 u32 sd_qc_per_block;
532 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
533 u32 sd_max_height; /* Max height of a file's metadata tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000534 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
Steven Whitehousecd915492006-09-04 12:49:07 -0400535 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000536 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
David Teiglandb3b94fa2006-01-16 16:50:04 +0000537
538 struct gfs2_args sd_args; /* Mount arguments */
539 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
540
541 /* Lock Stuff */
542
543 struct lm_lockstruct sd_lockstruct;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000544 struct gfs2_holder sd_live_gh;
545 struct gfs2_glock *sd_rename_gl;
546 struct gfs2_glock *sd_trans_gl;
Steven Whitehousee4027462010-01-25 11:20:19 +0000547 wait_queue_head_t sd_glock_wait;
548 atomic_t sd_glock_disposal;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000549
550 /* Inode Stuff */
551
Steven Whitehouse9b8df982008-08-08 13:45:13 +0100552 struct dentry *sd_master_dir;
553 struct dentry *sd_root_dir;
554
Steven Whitehousef42faf42006-01-30 18:34:10 +0000555 struct inode *sd_jindex;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000556 struct inode *sd_statfs_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000557 struct inode *sd_sc_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000558 struct inode *sd_qc_inode;
559 struct inode *sd_rindex;
560 struct inode *sd_quota_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000561
David Teiglandb3b94fa2006-01-16 16:50:04 +0000562 /* StatFS stuff */
563
564 spinlock_t sd_statfs_spin;
Al Virobd209cc2006-10-13 23:43:19 -0400565 struct gfs2_statfs_change_host sd_statfs_master;
566 struct gfs2_statfs_change_host sd_statfs_local;
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500567 int sd_statfs_force_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000568
569 /* Resource group stuff */
570
Bob Petersoncf45b752008-01-31 10:31:39 -0600571 int sd_rindex_uptodate;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000572 spinlock_t sd_rindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000573 struct mutex sd_rindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000574 struct list_head sd_rindex_list;
575 struct list_head sd_rindex_mru_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000576 struct gfs2_rgrpd *sd_rindex_forward;
577 unsigned int sd_rgrps;
578
579 /* Journal index stuff */
580
581 struct list_head sd_jindex_list;
582 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000583 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000584 unsigned int sd_journals;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000585
586 struct gfs2_jdesc *sd_jdesc;
587 struct gfs2_holder sd_journal_gh;
588 struct gfs2_holder sd_jinode_gh;
589
David Teiglandb3b94fa2006-01-16 16:50:04 +0000590 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000591 struct gfs2_holder sd_qc_gh;
592
593 /* Daemon stuff */
594
David Teiglandb3b94fa2006-01-16 16:50:04 +0000595 struct task_struct *sd_logd_process;
596 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000597
David Teiglandb3b94fa2006-01-16 16:50:04 +0000598 /* Quota stuff */
599
600 struct list_head sd_quota_list;
601 atomic_t sd_quota_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000602 struct mutex sd_quota_mutex;
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000603 wait_queue_head_t sd_quota_wait;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000604 struct list_head sd_trunc_list;
605 spinlock_t sd_trunc_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000606
607 unsigned int sd_quota_slots;
608 unsigned int sd_quota_chunks;
609 unsigned char **sd_quota_bitmap;
610
Steven Whitehousecd915492006-09-04 12:49:07 -0400611 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000612
613 /* Log stuff */
614
615 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000616
617 unsigned int sd_log_blks_reserved;
618 unsigned int sd_log_commited_buf;
Robert Peterson2332c442007-06-18 14:50:20 -0500619 unsigned int sd_log_commited_databuf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000620 unsigned int sd_log_commited_revoke;
621
David Teiglandb3b94fa2006-01-16 16:50:04 +0000622 unsigned int sd_log_num_buf;
623 unsigned int sd_log_num_revoke;
624 unsigned int sd_log_num_rg;
625 unsigned int sd_log_num_databuf;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000626
David Teiglandb3b94fa2006-01-16 16:50:04 +0000627 struct list_head sd_log_le_buf;
628 struct list_head sd_log_le_revoke;
629 struct list_head sd_log_le_rg;
630 struct list_head sd_log_le_databuf;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100631 struct list_head sd_log_le_ordered;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000632
Steven Whitehousefd041f02007-11-08 14:55:03 +0000633 atomic_t sd_log_blks_free;
Steven Whitehouse71b86f52006-03-28 14:14:04 -0500634 struct mutex sd_log_reserve_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000635
Steven Whitehousecd915492006-09-04 12:49:07 -0400636 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000637 unsigned int sd_log_head;
638 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000639 int sd_log_idle;
640
641 unsigned long sd_log_flush_time;
Steven Whitehouse484adff2006-03-29 09:12:12 -0500642 struct rw_semaphore sd_log_flush_lock;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100643 atomic_t sd_log_in_flight;
644 wait_queue_head_t sd_log_flush_wait;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000645
646 unsigned int sd_log_flush_head;
Steven Whitehousecd915492006-09-04 12:49:07 -0400647 u64 sd_log_flush_wrapped;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000648
649 struct list_head sd_ail1_list;
650 struct list_head sd_ail2_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400651 u64 sd_ail_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000652
653 /* Replay stuff */
654
655 struct list_head sd_revoke_list;
656 unsigned int sd_replay_tail;
657
658 unsigned int sd_found_blocks;
659 unsigned int sd_found_revokes;
660 unsigned int sd_replayed_blocks;
661
662 /* For quiescing the filesystem */
663
664 struct gfs2_holder sd_freeze_gh;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000665 struct mutex sd_freeze_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000666 unsigned int sd_freeze_count;
667
David Teiglandb3b94fa2006-01-16 16:50:04 +0000668 char sd_fsname[GFS2_FSNAME_LEN];
669 char sd_table_name[GFS2_FSNAME_LEN];
670 char sd_proto_name[GFS2_FSNAME_LEN];
671
672 /* Debugging crud */
673
674 unsigned long sd_last_warning;
Robert Peterson5f882092007-04-18 11:41:11 -0500675 struct dentry *debugfs_dir; /* debugfs directory */
676 struct dentry *debugfs_dentry_glocks; /* for debugfs */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000677};
678
679#endif /* __INCORE_DOT_H__ */
680