blob: fdbf4b366fa540d295dcbd73b298099b50418f8c [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 Whitehousef057f6c2009-01-12 10:43:39 +000015#include <linux/dlm.h>
16#include <linux/buffer_head.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040017
David Teiglandb3b94fa2006-01-16 16:50:04 +000018#define DIO_WAIT 0x00000010
19#define DIO_METADATA 0x00000020
David Teiglandb3b94fa2006-01-16 16:50:04 +000020#define DIO_ALL 0x00000100
21
22struct gfs2_log_operations;
23struct gfs2_log_element;
David Teiglandb3b94fa2006-01-16 16:50:04 +000024struct gfs2_holder;
25struct gfs2_glock;
David Teiglandb3b94fa2006-01-16 16:50:04 +000026struct gfs2_quota_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +000027struct gfs2_trans;
28struct gfs2_ail;
29struct gfs2_jdesc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000030struct gfs2_sbd;
Steven Whitehousef057f6c2009-01-12 10:43:39 +000031struct lm_lockops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000032
33typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
34
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010035struct 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 */
39 u32 lh_blkno;
40 u32 lh_hash;
41};
42
David Teiglandb3b94fa2006-01-16 16:50:04 +000043/*
44 * Structure of operations that are associated with each
45 * type of element in the log.
46 */
47
48struct gfs2_log_operations {
49 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
David Teiglandb3b94fa2006-01-16 16:50:04 +000050 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,
Al Viro55167622006-10-13 21:47:13 -040053 struct gfs2_log_header_host *head, int pass);
David Teiglandb3b94fa2006-01-16 16:50:04 +000054 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
55 struct gfs2_log_descriptor *ld, __be64 *ptr,
56 int pass);
57 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
Steven Whitehouseb09e5932006-04-07 11:17:32 -040058 const char *lo_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +000059};
60
61struct gfs2_log_element {
62 struct list_head le_list;
Steven Whitehouseb09e5932006-04-07 11:17:32 -040063 const struct gfs2_log_operations *le_ops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000064};
65
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010066#define GBF_FULL 1
67
David Teiglandb3b94fa2006-01-16 16:50:04 +000068struct gfs2_bitmap {
69 struct buffer_head *bi_bh;
70 char *bi_clone;
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010071 unsigned long bi_flags;
Steven Whitehousecd915492006-09-04 12:49:07 -040072 u32 bi_offset;
73 u32 bi_start;
74 u32 bi_len;
David Teiglandb3b94fa2006-01-16 16:50:04 +000075};
76
77struct 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 */
Steven Whitehousecfc8b542008-11-04 10:25:13 +000086 u32 rd_free;
Steven Whitehouse73f74942008-11-04 10:32:57 +000087 u32 rd_free_clone;
88 u32 rd_dinodes;
Steven Whitehoused8b71f72008-11-04 10:19:03 +000089 u64 rd_igeneration;
David Teiglandb3b94fa2006-01-16 16:50:04 +000090 struct gfs2_bitmap *rd_bits;
Steven Whitehousef55ab262006-02-21 12:51:39 +000091 struct mutex rd_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +000092 struct gfs2_log_element rd_le;
David Teiglandb3b94fa2006-01-16 16:50:04 +000093 struct gfs2_sbd *rd_sbd;
Steven Whitehouse73f74942008-11-04 10:32:57 +000094 unsigned int rd_bh_count;
95 u32 rd_last_alloc;
Steven Whitehouse1ce97e52009-05-21 15:18:19 +010096 u32 rd_flags;
Steven Whitehouse09010972009-05-20 10:48:47 +010097#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
98#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
99#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
100#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000101};
102
103enum gfs2_state_bits {
104 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +0000105 BH_Escaped = BH_PrivateStart + 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000106};
107
108BUFFER_FNS(Pinned, pinned)
109TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000110BUFFER_FNS(Escaped, escaped)
111TAS_BUFFER_FNS(Escaped, escaped)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000112
113struct gfs2_bufdata {
114 struct buffer_head *bd_bh;
115 struct gfs2_glock *bd_gl;
116
Steven Whitehouse82e86082007-09-02 15:39:43 +0100117 union {
118 struct list_head list_tr;
119 u64 blkno;
120 } u;
121#define bd_list_tr u.list_tr
122#define bd_blkno u.blkno
123
David Teiglandb3b94fa2006-01-16 16:50:04 +0000124 struct gfs2_log_element bd_le;
125
126 struct gfs2_ail *bd_ail;
127 struct list_head bd_ail_st_list;
128 struct list_head bd_ail_gl_list;
129};
130
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000131/*
132 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
133 * prefix of lock_dlm_ gets awkward.
134 */
135
136#define GDLM_STRNAME_BYTES 25
137#define GDLM_LVB_SIZE 32
138
139enum {
140 DFL_BLOCK_LOCKS = 0,
141};
142
143struct lm_lockname {
144 u64 ln_number;
145 unsigned int ln_type;
146};
147
148#define lm_name_equal(name1, name2) \
149 (((name1)->ln_number == (name2)->ln_number) && \
150 ((name1)->ln_type == (name2)->ln_type))
151
152
David Teiglandb3b94fa2006-01-16 16:50:04 +0000153struct gfs2_glock_operations {
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500154 void (*go_xmote_th) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100155 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500156 void (*go_inval) (struct gfs2_glock *gl, int flags);
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000157 int (*go_demote_ok) (const struct gfs2_glock *gl);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500158 int (*go_lock) (struct gfs2_holder *gh);
159 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100160 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500161 void (*go_callback) (struct gfs2_glock *gl);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400162 const int go_type;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500163 const unsigned long go_min_hold_time;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000164 const unsigned long go_flags;
165#define GLOF_ASPACE 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000166};
167
168enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000169 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100170 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000171 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000172 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000173};
174
175struct gfs2_holder {
176 struct list_head gh_list;
177
178 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800179 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000180 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400181 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000182
183 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100184 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500185 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000186};
187
188enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100189 GLF_LOCK = 1,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100190 GLF_DEMOTE = 3,
191 GLF_PENDING_DEMOTE = 4,
192 GLF_DEMOTE_IN_PROGRESS = 5,
193 GLF_DIRTY = 6,
194 GLF_LFLUSH = 7,
195 GLF_INVALIDATE_IN_PROGRESS = 8,
196 GLF_REPLY_PENDING = 9,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000197 GLF_INITIAL = 10,
198 GLF_FROZEN = 11,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000199};
200
201struct gfs2_glock {
Steven Whitehouseb6397892006-09-12 10:10:01 -0400202 struct hlist_node gl_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000203 unsigned long gl_flags; /* GLF_... */
204 struct lm_lockname gl_name;
Steven Whitehouse16feb9f2006-09-13 10:43:37 -0400205 atomic_t gl_ref;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000206
207 spinlock_t gl_spin;
208
209 unsigned int gl_state;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100210 unsigned int gl_target;
211 unsigned int gl_reply;
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400212 unsigned int gl_hash;
Benjamin Marzinski02ffad02009-03-06 10:03:20 -0600213 unsigned int gl_req;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000214 unsigned int gl_demote_state; /* state requested by remote node */
215 unsigned long gl_demote_time; /* time of first demote request */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000216 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000217
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400218 const struct gfs2_glock_operations *gl_ops;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000219 char gl_strname[GDLM_STRNAME_BYTES];
220 struct dlm_lksb gl_lksb;
221 char gl_lvb[32];
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500222 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000223 void *gl_object;
224
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000225 struct list_head gl_lru;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000226
227 struct gfs2_sbd *gl_sbd;
228
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,
261};
262
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100263
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400265 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100266 u64 i_no_addr;
267 u64 i_no_formal_ino;
Steven Whitehousebcf0b5b2008-11-03 13:39:46 +0000268 u64 i_generation;
Steven Whitehouse3767ac22008-11-03 14:28:42 +0000269 u64 i_eattr;
Steven Whitehousec9e98882008-11-04 09:47:33 +0000270 loff_t i_disksize;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000271 unsigned long i_flags; /* GIF_... */
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400272 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000273 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000274 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000275 struct gfs2_alloc *i_alloc;
Steven Whitehousece276b02008-02-06 09:25:45 +0000276 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000277 struct rw_semaphore i_rw_mutex;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000278 struct list_head i_trunc_list;
Steven Whitehousead6203f2008-11-03 13:59:19 +0000279 u32 i_entries;
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000280 u32 i_diskflags;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000281 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000282 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000283};
284
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400285/*
286 * Since i_inode is the first element of struct gfs2_inode,
287 * this is effectively a cast.
288 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400289static inline struct gfs2_inode *GFS2_I(struct inode *inode)
290{
291 return container_of(inode, struct gfs2_inode, i_inode);
292}
293
Steven Whitehousebf36a712007-10-17 08:35:19 +0100294static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400295{
296 return inode->i_sb->s_fs_info;
297}
298
David Teiglandb3b94fa2006-01-16 16:50:04 +0000299struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000300 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000301 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000302};
303
David Teiglandb3b94fa2006-01-16 16:50:04 +0000304struct gfs2_revoke_replay {
305 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400306 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000307 unsigned int rr_where;
308};
309
310enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000311 QDF_USER = 0,
312 QDF_CHANGE = 1,
313 QDF_LOCKED = 2,
314};
315
316struct gfs2_quota_data {
317 struct list_head qd_list;
Abhijith Das0a7ab792009-01-07 16:03:37 -0600318 struct list_head qd_reclaim;
319
320 atomic_t qd_count;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000321
Steven Whitehousecd915492006-09-04 12:49:07 -0400322 u32 qd_id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000323 unsigned long qd_flags; /* QDF_... */
324
Steven Whitehousecd915492006-09-04 12:49:07 -0400325 s64 qd_change;
326 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000327
328 unsigned int qd_slot;
329 unsigned int qd_slot_count;
330
331 struct buffer_head *qd_bh;
332 struct gfs2_quota_change *qd_bh_qc;
333 unsigned int qd_bh_count;
334
335 struct gfs2_glock *qd_gl;
336 struct gfs2_quota_lvb qd_qb;
337
Steven Whitehousecd915492006-09-04 12:49:07 -0400338 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000339 unsigned long qd_last_warn;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000340};
341
David Teiglandb3b94fa2006-01-16 16:50:04 +0000342struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500343 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000344
345 unsigned int tr_blocks;
346 unsigned int tr_revokes;
347 unsigned int tr_reserved;
348
Steven Whitehousee317ffc2006-03-01 11:39:37 -0500349 struct gfs2_holder tr_t_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000350
351 int tr_touched;
352
353 unsigned int tr_num_buf;
354 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500355 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000356 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500357 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000358 struct list_head tr_list_buf;
359
360 unsigned int tr_num_revoke;
361 unsigned int tr_num_revoke_rm;
362};
363
364struct gfs2_ail {
365 struct list_head ai_list;
366
367 unsigned int ai_first;
368 struct list_head ai_ail1_list;
369 struct list_head ai_ail2_list;
370
Steven Whitehousecd915492006-09-04 12:49:07 -0400371 u64 ai_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000372};
373
Bob Petersonda6dd402007-12-11 18:49:21 -0600374struct gfs2_journal_extent {
375 struct list_head extent_list;
376
377 unsigned int lblock; /* First logical block */
378 u64 dblock; /* First disk block */
379 u64 blocks;
380};
381
David Teiglandb3b94fa2006-01-16 16:50:04 +0000382struct gfs2_jdesc {
383 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600384 struct list_head extent_list;
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200385 struct work_struct jd_work;
Steven Whitehouse7359a192006-02-13 12:27:43 +0000386 struct inode *jd_inode;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100387 unsigned long jd_flags;
388#define JDF_RECOVERY 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000389 unsigned int jd_jid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000390 unsigned int jd_blocks;
391};
392
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100393struct gfs2_statfs_change_host {
394 s64 sc_total;
395 s64 sc_free;
396 s64 sc_dinodes;
397};
398
David Teiglandb3b94fa2006-01-16 16:50:04 +0000399#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
400#define GFS2_QUOTA_OFF 0
401#define GFS2_QUOTA_ACCOUNT 1
402#define GFS2_QUOTA_ON 2
403
404#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
405#define GFS2_DATA_WRITEBACK 1
406#define GFS2_DATA_ORDERED 2
407
Bob Petersond34843d2009-08-24 10:44:18 +0100408#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
409#define GFS2_ERRORS_WITHDRAW 0
410#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
411#define GFS2_ERRORS_RO 2 /* place holder for future feature */
412#define GFS2_ERRORS_PANIC 3
413
David Teiglandb3b94fa2006-01-16 16:50:04 +0000414struct gfs2_args {
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100415 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
416 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
417 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
418 unsigned int ar_spectator:1; /* Don't get a journal */
419 unsigned int ar_ignore_local_fs:1; /* Ignore optimisations */
420 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
421 unsigned int ar_localcaching:1; /* Local caching */
422 unsigned int ar_debug:1; /* Oops on errors */
423 unsigned int ar_upgrade:1; /* Upgrade ondisk format */
424 unsigned int ar_posix_acl:1; /* Enable posix acls */
425 unsigned int ar_quota:2; /* off/account/on */
426 unsigned int ar_suiddir:1; /* suiddir support */
427 unsigned int ar_data:2; /* ordered/writeback */
428 unsigned int ar_meta:1; /* mount metafs */
Steven Whitehousef15ab562009-02-09 09:25:01 +0000429 unsigned int ar_discard:1; /* discard requests */
Bob Petersond34843d2009-08-24 10:44:18 +0100430 unsigned int ar_errors:2; /* errors=withdraw | panic */
Christoph Hellwigf25934c2009-10-30 08:03:27 +0100431 unsigned int ar_nobarrier:1; /* do not send barriers */
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100432 int ar_commit; /* Commit interval */
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500433 int ar_statfs_quantum; /* The fast statfs interval */
434 int ar_quota_quantum; /* The quota interval */
435 int ar_statfs_percent; /* The % change to force sync */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000436};
437
438struct gfs2_tune {
439 spinlock_t gt_spin;
440
David Teiglandb3b94fa2006-01-16 16:50:04 +0000441 unsigned int gt_logd_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000442
443 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
444 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
445 unsigned int gt_quota_scale_num; /* Numerator */
446 unsigned int gt_quota_scale_den; /* Denominator */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000447 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000448 unsigned int gt_new_files_jdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000449 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000450 unsigned int gt_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000451 unsigned int gt_statfs_quantum;
452 unsigned int gt_statfs_slow;
453};
454
David Teiglandb3b94fa2006-01-16 16:50:04 +0000455enum {
456 SDF_JOURNAL_CHECKED = 0,
457 SDF_JOURNAL_LIVE = 1,
458 SDF_SHUTDOWN = 2,
Steven Whitehouse254db572008-09-26 10:23:22 +0100459 SDF_NOBARRIERS = 3,
Steven Whitehousefe64d512009-05-19 10:01:18 +0100460 SDF_NORECOVERY = 4,
Steven Whitehouse913a71d2010-05-06 11:03:29 +0100461 SDF_DEMOTE = 5,
Steven Whitehouseba6e9362010-06-14 10:01:30 +0100462 SDF_NOJOURNALID = 6,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000463};
464
David Teiglandb3b94fa2006-01-16 16:50:04 +0000465#define GFS2_FSNAME_LEN 256
466
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100467struct gfs2_inum_host {
468 u64 no_formal_ino;
469 u64 no_addr;
470};
471
472struct gfs2_sb_host {
473 u32 sb_magic;
474 u32 sb_type;
475 u32 sb_format;
476
477 u32 sb_fs_format;
478 u32 sb_multihost_format;
479 u32 sb_bsize;
480 u32 sb_bsize_shift;
481
482 struct gfs2_inum_host sb_master_dir;
483 struct gfs2_inum_host sb_root_dir;
484
485 char sb_lockproto[GFS2_LOCKNAME_LEN];
486 char sb_locktable[GFS2_LOCKNAME_LEN];
Steven Whitehouse02e3cc72009-02-10 13:48:30 +0000487 u8 sb_uuid[16];
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100488};
489
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000490/*
491 * lm_mount() return values
492 *
493 * ls_jid - the journal ID this node should use
494 * ls_first - this node is the first to mount the file system
495 * ls_lockspace - lock module's context for this file system
496 * ls_ops - lock module's functions
497 */
498
499struct lm_lockstruct {
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000500 unsigned int ls_jid;
501 unsigned int ls_first;
502 unsigned int ls_first_done;
503 unsigned int ls_nodir;
504 const struct lm_lockops *ls_ops;
505 unsigned long ls_flags;
506 dlm_lockspace_t *ls_dlm;
507
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000508 int ls_recover_jid_done;
509 int ls_recover_jid_status;
510};
511
David Teiglandb3b94fa2006-01-16 16:50:04 +0000512struct gfs2_sbd {
513 struct super_block *sd_vfs;
514 struct kobject sd_kobj;
515 unsigned long sd_flags; /* SDF_... */
Al Virof50dfaf2006-10-13 20:45:02 -0400516 struct gfs2_sb_host sd_sb;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000517
518 /* Constants computed on mount */
519
Steven Whitehousecd915492006-09-04 12:49:07 -0400520 u32 sd_fsb2bb;
521 u32 sd_fsb2bb_shift;
522 u32 sd_diptrs; /* Number of pointers in a dinode */
523 u32 sd_inptrs; /* Number of pointers in a indirect block */
524 u32 sd_jbsize; /* Size of a journaled data block */
525 u32 sd_hash_bsize; /* sizeof(exhash block) */
526 u32 sd_hash_bsize_shift;
527 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
528 u32 sd_qc_per_block;
529 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
530 u32 sd_max_height; /* Max height of a file's metadata tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000531 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
Steven Whitehousecd915492006-09-04 12:49:07 -0400532 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000533 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
David Teiglandb3b94fa2006-01-16 16:50:04 +0000534
535 struct gfs2_args sd_args; /* Mount arguments */
536 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
537
538 /* Lock Stuff */
539
540 struct lm_lockstruct sd_lockstruct;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000541 struct gfs2_holder sd_live_gh;
542 struct gfs2_glock *sd_rename_gl;
543 struct gfs2_glock *sd_trans_gl;
Steven Whitehousee4027462010-01-25 11:20:19 +0000544 wait_queue_head_t sd_glock_wait;
545 atomic_t sd_glock_disposal;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000546
547 /* Inode Stuff */
548
Steven Whitehouse9b8df982008-08-08 13:45:13 +0100549 struct dentry *sd_master_dir;
550 struct dentry *sd_root_dir;
551
Steven Whitehousef42faf42006-01-30 18:34:10 +0000552 struct inode *sd_jindex;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000553 struct inode *sd_statfs_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000554 struct inode *sd_sc_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000555 struct inode *sd_qc_inode;
556 struct inode *sd_rindex;
557 struct inode *sd_quota_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000558
David Teiglandb3b94fa2006-01-16 16:50:04 +0000559 /* StatFS stuff */
560
561 spinlock_t sd_statfs_spin;
Al Virobd209cc2006-10-13 23:43:19 -0400562 struct gfs2_statfs_change_host sd_statfs_master;
563 struct gfs2_statfs_change_host sd_statfs_local;
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500564 int sd_statfs_force_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000565
566 /* Resource group stuff */
567
Bob Petersoncf45b752008-01-31 10:31:39 -0600568 int sd_rindex_uptodate;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000569 spinlock_t sd_rindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000570 struct mutex sd_rindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000571 struct list_head sd_rindex_list;
572 struct list_head sd_rindex_mru_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000573 struct gfs2_rgrpd *sd_rindex_forward;
574 unsigned int sd_rgrps;
575
576 /* Journal index stuff */
577
578 struct list_head sd_jindex_list;
579 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000580 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000581 unsigned int sd_journals;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000582
583 struct gfs2_jdesc *sd_jdesc;
584 struct gfs2_holder sd_journal_gh;
585 struct gfs2_holder sd_jinode_gh;
586
David Teiglandb3b94fa2006-01-16 16:50:04 +0000587 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000588 struct gfs2_holder sd_qc_gh;
589
590 /* Daemon stuff */
591
David Teiglandb3b94fa2006-01-16 16:50:04 +0000592 struct task_struct *sd_logd_process;
593 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000594
David Teiglandb3b94fa2006-01-16 16:50:04 +0000595 /* Quota stuff */
596
597 struct list_head sd_quota_list;
598 atomic_t sd_quota_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000599 struct mutex sd_quota_mutex;
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000600 wait_queue_head_t sd_quota_wait;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000601 struct list_head sd_trunc_list;
602 spinlock_t sd_trunc_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000603
604 unsigned int sd_quota_slots;
605 unsigned int sd_quota_chunks;
606 unsigned char **sd_quota_bitmap;
607
Steven Whitehousecd915492006-09-04 12:49:07 -0400608 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000609
610 /* Log stuff */
611
612 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000613
614 unsigned int sd_log_blks_reserved;
615 unsigned int sd_log_commited_buf;
Robert Peterson2332c442007-06-18 14:50:20 -0500616 unsigned int sd_log_commited_databuf;
Benjamin Marzinski2e95e3f2010-03-10 18:10:19 -0600617 int sd_log_commited_revoke;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000618
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500619 atomic_t sd_log_pinned;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000620 unsigned int sd_log_num_buf;
621 unsigned int sd_log_num_revoke;
622 unsigned int sd_log_num_rg;
623 unsigned int sd_log_num_databuf;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000624
David Teiglandb3b94fa2006-01-16 16:50:04 +0000625 struct list_head sd_log_le_buf;
626 struct list_head sd_log_le_revoke;
627 struct list_head sd_log_le_rg;
628 struct list_head sd_log_le_databuf;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100629 struct list_head sd_log_le_ordered;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000630
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500631 atomic_t sd_log_thresh1;
632 atomic_t sd_log_thresh2;
Steven Whitehousefd041f02007-11-08 14:55:03 +0000633 atomic_t sd_log_blks_free;
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500634 wait_queue_head_t sd_log_waitq;
635 wait_queue_head_t sd_logd_waitq;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000636
Steven Whitehousecd915492006-09-04 12:49:07 -0400637 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000638 unsigned int sd_log_head;
639 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000640 int sd_log_idle;
641
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