blob: 0a064e91ac7071e6f5570acf50666aaf59b59bc2 [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>
Alexey Dobriyan57cc7212011-01-10 08:18:25 +020014#include <linux/kobject.h>
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -050015#include <linux/workqueue.h>
Steven Whitehousef057f6c2009-01-12 10:43:39 +000016#include <linux/dlm.h>
17#include <linux/buffer_head.h>
Steven Whitehousebc015cb2011-01-19 09:30:01 +000018#include <linux/rcupdate.h>
19#include <linux/rculist_bl.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040020
David Teiglandb3b94fa2006-01-16 16:50:04 +000021#define DIO_WAIT 0x00000010
22#define DIO_METADATA 0x00000020
David Teiglandb3b94fa2006-01-16 16:50:04 +000023
24struct gfs2_log_operations;
25struct gfs2_log_element;
David Teiglandb3b94fa2006-01-16 16:50:04 +000026struct gfs2_holder;
27struct gfs2_glock;
David Teiglandb3b94fa2006-01-16 16:50:04 +000028struct gfs2_quota_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +000029struct gfs2_trans;
30struct gfs2_ail;
31struct gfs2_jdesc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000032struct gfs2_sbd;
Steven Whitehousef057f6c2009-01-12 10:43:39 +000033struct lm_lockops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000034
35typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
36
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010037struct gfs2_log_header_host {
38 u64 lh_sequence; /* Sequence number of this transaction */
39 u32 lh_flags; /* GFS2_LOG_HEAD_... */
40 u32 lh_tail; /* Block number of log tail */
41 u32 lh_blkno;
42 u32 lh_hash;
43};
44
David Teiglandb3b94fa2006-01-16 16:50:04 +000045/*
46 * Structure of operations that are associated with each
47 * type of element in the log.
48 */
49
50struct gfs2_log_operations {
51 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
David Teiglandb3b94fa2006-01-16 16:50:04 +000052 void (*lo_before_commit) (struct gfs2_sbd *sdp);
53 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
54 void (*lo_before_scan) (struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -040055 struct gfs2_log_header_host *head, int pass);
David Teiglandb3b94fa2006-01-16 16:50:04 +000056 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
57 struct gfs2_log_descriptor *ld, __be64 *ptr,
58 int pass);
59 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
Steven Whitehouseb09e5932006-04-07 11:17:32 -040060 const char *lo_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +000061};
62
63struct gfs2_log_element {
64 struct list_head le_list;
Steven Whitehouseb09e5932006-04-07 11:17:32 -040065 const struct gfs2_log_operations *le_ops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000066};
67
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010068#define GBF_FULL 1
69
David Teiglandb3b94fa2006-01-16 16:50:04 +000070struct gfs2_bitmap {
71 struct buffer_head *bi_bh;
72 char *bi_clone;
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010073 unsigned long bi_flags;
Steven Whitehousecd915492006-09-04 12:49:07 -040074 u32 bi_offset;
75 u32 bi_start;
76 u32 bi_len;
David Teiglandb3b94fa2006-01-16 16:50:04 +000077};
78
79struct gfs2_rgrpd {
80 struct list_head rd_list; /* Link with superblock */
81 struct list_head rd_list_mru;
David Teiglandb3b94fa2006-01-16 16:50:04 +000082 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010083 u64 rd_addr; /* grp block disk address */
84 u64 rd_data0; /* first data location */
85 u32 rd_length; /* length of rgrp header in fs blocks */
86 u32 rd_data; /* num of data blocks in rgrp */
87 u32 rd_bitbytes; /* number of bytes in data bitmaps */
Steven Whitehousecfc8b542008-11-04 10:25:13 +000088 u32 rd_free;
Steven Whitehouse73f74942008-11-04 10:32:57 +000089 u32 rd_free_clone;
90 u32 rd_dinodes;
Steven Whitehoused8b71f72008-11-04 10:19:03 +000091 u64 rd_igeneration;
David Teiglandb3b94fa2006-01-16 16:50:04 +000092 struct gfs2_bitmap *rd_bits;
Steven Whitehousef55ab262006-02-21 12:51:39 +000093 struct mutex rd_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +000094 struct gfs2_log_element rd_le;
David Teiglandb3b94fa2006-01-16 16:50:04 +000095 struct gfs2_sbd *rd_sbd;
Steven Whitehouse73f74942008-11-04 10:32:57 +000096 unsigned int rd_bh_count;
97 u32 rd_last_alloc;
Steven Whitehouse1ce97e52009-05-21 15:18:19 +010098 u32 rd_flags;
Steven Whitehouse09010972009-05-20 10:48:47 +010099#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
100#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
101#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
102#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000103};
104
105enum gfs2_state_bits {
106 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +0000107 BH_Escaped = BH_PrivateStart + 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000108};
109
110BUFFER_FNS(Pinned, pinned)
111TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000112BUFFER_FNS(Escaped, escaped)
113TAS_BUFFER_FNS(Escaped, escaped)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000114
115struct gfs2_bufdata {
116 struct buffer_head *bd_bh;
117 struct gfs2_glock *bd_gl;
118
Steven Whitehouse82e86082007-09-02 15:39:43 +0100119 union {
120 struct list_head list_tr;
121 u64 blkno;
122 } u;
123#define bd_list_tr u.list_tr
124#define bd_blkno u.blkno
125
David Teiglandb3b94fa2006-01-16 16:50:04 +0000126 struct gfs2_log_element bd_le;
127
128 struct gfs2_ail *bd_ail;
129 struct list_head bd_ail_st_list;
130 struct list_head bd_ail_gl_list;
131};
132
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000133/*
134 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
135 * prefix of lock_dlm_ gets awkward.
136 */
137
138#define GDLM_STRNAME_BYTES 25
139#define GDLM_LVB_SIZE 32
140
141enum {
142 DFL_BLOCK_LOCKS = 0,
143};
144
145struct lm_lockname {
146 u64 ln_number;
147 unsigned int ln_type;
148};
149
150#define lm_name_equal(name1, name2) \
151 (((name1)->ln_number == (name2)->ln_number) && \
152 ((name1)->ln_type == (name2)->ln_type))
153
154
David Teiglandb3b94fa2006-01-16 16:50:04 +0000155struct gfs2_glock_operations {
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500156 void (*go_xmote_th) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100157 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500158 void (*go_inval) (struct gfs2_glock *gl, int flags);
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000159 int (*go_demote_ok) (const struct gfs2_glock *gl);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500160 int (*go_lock) (struct gfs2_holder *gh);
161 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100162 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500163 void (*go_callback) (struct gfs2_glock *gl);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400164 const int go_type;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500165 const unsigned long go_min_hold_time;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000166 const unsigned long go_flags;
167#define GLOF_ASPACE 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000168};
169
170enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000171 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100172 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000173 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000174 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000175};
176
177struct gfs2_holder {
178 struct list_head gh_list;
179
180 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800181 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000182 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400183 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000184
185 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100186 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500187 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000188};
189
190enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100191 GLF_LOCK = 1,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100192 GLF_DEMOTE = 3,
193 GLF_PENDING_DEMOTE = 4,
194 GLF_DEMOTE_IN_PROGRESS = 5,
195 GLF_DIRTY = 6,
196 GLF_LFLUSH = 7,
197 GLF_INVALIDATE_IN_PROGRESS = 8,
198 GLF_REPLY_PENDING = 9,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000199 GLF_INITIAL = 10,
200 GLF_FROZEN = 11,
Steven Whitehouse7b5e3d52010-09-03 09:39:20 +0100201 GLF_QUEUED = 12,
Steven Whitehouse627c10b2011-04-14 14:09:52 +0100202 GLF_LRU = 13,
203 GLF_OBJECT = 14, /* Used only for tracing */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000204};
205
206struct gfs2_glock {
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000207 struct hlist_bl_node gl_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000208 unsigned long gl_flags; /* GLF_... */
209 struct lm_lockname gl_name;
Steven Whitehouse16feb9f2006-09-13 10:43:37 -0400210 atomic_t gl_ref;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000211
212 spinlock_t gl_spin;
213
Steven Whitehouse47a25382010-11-30 15:49:31 +0000214 /* State fields protected by gl_spin */
215 unsigned int gl_state:2, /* Current state */
216 gl_target:2, /* Target state */
217 gl_demote_state:2, /* State requested by remote node */
218 gl_req:2, /* State in last dlm request */
219 gl_reply:8; /* Last reply from the dlm */
220
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400221 unsigned int gl_hash;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000222 unsigned long gl_demote_time; /* time of first demote request */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000223 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000224
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400225 const struct gfs2_glock_operations *gl_ops;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000226 char gl_strname[GDLM_STRNAME_BYTES];
227 struct dlm_lksb gl_lksb;
228 char gl_lvb[32];
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500229 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000230 void *gl_object;
231
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000232 struct list_head gl_lru;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000233
234 struct gfs2_sbd *gl_sbd;
235
David Teiglandb3b94fa2006-01-16 16:50:04 +0000236 struct list_head gl_ail_list;
237 atomic_t gl_ail_count;
Steven Whitehousef42ab082011-04-14 16:50:31 +0100238 atomic_t gl_revokes;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500239 struct delayed_work gl_work;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500240 struct work_struct gl_delete;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000241 struct rcu_head gl_rcu;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000242};
243
Steven Whitehouseda755fd2008-01-30 15:34:04 +0000244#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
245
David Teiglandb3b94fa2006-01-16 16:50:04 +0000246struct gfs2_alloc {
247 /* Quota stuff */
248
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -0400249 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
250 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400251 unsigned int al_qd_num;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000252
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400253 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
254 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000255
256 /* Filled in by gfs2_inplace_reserve() */
257
David Teiglandb3b94fa2006-01-16 16:50:04 +0000258 unsigned int al_line;
Steven Whitehouse6b61b072006-06-06 14:49:39 -0400259 char *al_file;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000260 struct gfs2_holder al_ri_gh;
261 struct gfs2_holder al_rgd_gh;
262 struct gfs2_rgrpd *al_rgd;
263
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264};
265
266enum {
Steven Whitehousebfded272006-11-01 16:05:38 -0500267 GIF_INVALID = 0,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000268 GIF_QD_LOCKED = 1,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000269 GIF_SW_PAGED = 3,
270};
271
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100272
David Teiglandb3b94fa2006-01-16 16:50:04 +0000273struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400274 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100275 u64 i_no_addr;
276 u64 i_no_formal_ino;
Steven Whitehousebcf0b5b2008-11-03 13:39:46 +0000277 u64 i_generation;
Steven Whitehouse3767ac22008-11-03 14:28:42 +0000278 u64 i_eattr;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000279 unsigned long i_flags; /* GIF_... */
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400280 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000281 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000282 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Steven Whitehouse6dbd8222008-01-10 15:18:55 +0000283 struct gfs2_alloc *i_alloc;
Steven Whitehousece276b02008-02-06 09:25:45 +0000284 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000285 struct rw_semaphore i_rw_mutex;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000286 struct list_head i_trunc_list;
Steven Whitehousead6203f2008-11-03 13:59:19 +0000287 u32 i_entries;
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000288 u32 i_diskflags;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000289 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000290 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000291};
292
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400293/*
294 * Since i_inode is the first element of struct gfs2_inode,
295 * this is effectively a cast.
296 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400297static inline struct gfs2_inode *GFS2_I(struct inode *inode)
298{
299 return container_of(inode, struct gfs2_inode, i_inode);
300}
301
Steven Whitehousebf36a712007-10-17 08:35:19 +0100302static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400303{
304 return inode->i_sb->s_fs_info;
305}
306
David Teiglandb3b94fa2006-01-16 16:50:04 +0000307struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000308 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000309 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000310};
311
David Teiglandb3b94fa2006-01-16 16:50:04 +0000312struct gfs2_revoke_replay {
313 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400314 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000315 unsigned int rr_where;
316};
317
318enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000319 QDF_USER = 0,
320 QDF_CHANGE = 1,
321 QDF_LOCKED = 2,
Abhijith Das662e3a52011-03-08 10:40:42 -0500322 QDF_REFRESH = 3,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000323};
324
325struct gfs2_quota_data {
326 struct list_head qd_list;
Abhijith Das0a7ab792009-01-07 16:03:37 -0600327 struct list_head qd_reclaim;
328
329 atomic_t qd_count;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000330
Steven Whitehousecd915492006-09-04 12:49:07 -0400331 u32 qd_id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000332 unsigned long qd_flags; /* QDF_... */
333
Steven Whitehousecd915492006-09-04 12:49:07 -0400334 s64 qd_change;
335 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000336
337 unsigned int qd_slot;
338 unsigned int qd_slot_count;
339
340 struct buffer_head *qd_bh;
341 struct gfs2_quota_change *qd_bh_qc;
342 unsigned int qd_bh_count;
343
344 struct gfs2_glock *qd_gl;
345 struct gfs2_quota_lvb qd_qb;
346
Steven Whitehousecd915492006-09-04 12:49:07 -0400347 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000348 unsigned long qd_last_warn;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000349};
350
David Teiglandb3b94fa2006-01-16 16:50:04 +0000351struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500352 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000353
354 unsigned int tr_blocks;
355 unsigned int tr_revokes;
356 unsigned int tr_reserved;
357
Steven Whitehousee317ffc2006-03-01 11:39:37 -0500358 struct gfs2_holder tr_t_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000359
360 int tr_touched;
361
362 unsigned int tr_num_buf;
363 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500364 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000365 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500366 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000367 struct list_head tr_list_buf;
368
369 unsigned int tr_num_revoke;
370 unsigned int tr_num_revoke_rm;
371};
372
373struct gfs2_ail {
374 struct list_head ai_list;
375
376 unsigned int ai_first;
377 struct list_head ai_ail1_list;
378 struct list_head ai_ail2_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000379};
380
Bob Petersonda6dd402007-12-11 18:49:21 -0600381struct gfs2_journal_extent {
382 struct list_head extent_list;
383
384 unsigned int lblock; /* First logical block */
385 u64 dblock; /* First disk block */
386 u64 blocks;
387};
388
David Teiglandb3b94fa2006-01-16 16:50:04 +0000389struct gfs2_jdesc {
390 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600391 struct list_head extent_list;
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200392 struct work_struct jd_work;
Steven Whitehouse7359a192006-02-13 12:27:43 +0000393 struct inode *jd_inode;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100394 unsigned long jd_flags;
395#define JDF_RECOVERY 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000396 unsigned int jd_jid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000397 unsigned int jd_blocks;
398};
399
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100400struct gfs2_statfs_change_host {
401 s64 sc_total;
402 s64 sc_free;
403 s64 sc_dinodes;
404};
405
David Teiglandb3b94fa2006-01-16 16:50:04 +0000406#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
407#define GFS2_QUOTA_OFF 0
408#define GFS2_QUOTA_ACCOUNT 1
409#define GFS2_QUOTA_ON 2
410
411#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
412#define GFS2_DATA_WRITEBACK 1
413#define GFS2_DATA_ORDERED 2
414
Bob Petersond34843d2009-08-24 10:44:18 +0100415#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
416#define GFS2_ERRORS_WITHDRAW 0
417#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
418#define GFS2_ERRORS_RO 2 /* place holder for future feature */
419#define GFS2_ERRORS_PANIC 3
420
David Teiglandb3b94fa2006-01-16 16:50:04 +0000421struct gfs2_args {
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100422 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
423 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
424 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
425 unsigned int ar_spectator:1; /* Don't get a journal */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100426 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100427 unsigned int ar_debug:1; /* Oops on errors */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100428 unsigned int ar_posix_acl:1; /* Enable posix acls */
429 unsigned int ar_quota:2; /* off/account/on */
430 unsigned int ar_suiddir:1; /* suiddir support */
431 unsigned int ar_data:2; /* ordered/writeback */
432 unsigned int ar_meta:1; /* mount metafs */
Steven Whitehousef15ab562009-02-09 09:25:01 +0000433 unsigned int ar_discard:1; /* discard requests */
Bob Petersond34843d2009-08-24 10:44:18 +0100434 unsigned int ar_errors:2; /* errors=withdraw | panic */
Christoph Hellwigf25934c2009-10-30 08:03:27 +0100435 unsigned int ar_nobarrier:1; /* do not send barriers */
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100436 int ar_commit; /* Commit interval */
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500437 int ar_statfs_quantum; /* The fast statfs interval */
438 int ar_quota_quantum; /* The quota interval */
439 int ar_statfs_percent; /* The % change to force sync */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000440};
441
442struct gfs2_tune {
443 spinlock_t gt_spin;
444
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_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000455 unsigned int gt_statfs_quantum;
456 unsigned int gt_statfs_slow;
457};
458
David Teiglandb3b94fa2006-01-16 16:50:04 +0000459enum {
460 SDF_JOURNAL_CHECKED = 0,
461 SDF_JOURNAL_LIVE = 1,
462 SDF_SHUTDOWN = 2,
Steven Whitehouse254db572008-09-26 10:23:22 +0100463 SDF_NOBARRIERS = 3,
Steven Whitehousefe64d512009-05-19 10:01:18 +0100464 SDF_NORECOVERY = 4,
Steven Whitehouse913a71d2010-05-06 11:03:29 +0100465 SDF_DEMOTE = 5,
Steven Whitehouseba6e9362010-06-14 10:01:30 +0100466 SDF_NOJOURNALID = 6,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000467};
468
David Teiglandb3b94fa2006-01-16 16:50:04 +0000469#define GFS2_FSNAME_LEN 256
470
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100471struct gfs2_inum_host {
472 u64 no_formal_ino;
473 u64 no_addr;
474};
475
476struct gfs2_sb_host {
477 u32 sb_magic;
478 u32 sb_type;
479 u32 sb_format;
480
481 u32 sb_fs_format;
482 u32 sb_multihost_format;
483 u32 sb_bsize;
484 u32 sb_bsize_shift;
485
486 struct gfs2_inum_host sb_master_dir;
487 struct gfs2_inum_host sb_root_dir;
488
489 char sb_lockproto[GFS2_LOCKNAME_LEN];
490 char sb_locktable[GFS2_LOCKNAME_LEN];
491};
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 Whitehousefeb47ca2010-09-29 15:04:18 +0100503 int ls_jid;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000504 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;
Benjamin Marzinski39211202010-08-20 00:21:02 -0500578 unsigned int sd_max_rg_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000579
580 /* Journal index stuff */
581
582 struct list_head sd_jindex_list;
583 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000584 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000585 unsigned int sd_journals;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000586
587 struct gfs2_jdesc *sd_jdesc;
588 struct gfs2_holder sd_journal_gh;
589 struct gfs2_holder sd_jinode_gh;
590
David Teiglandb3b94fa2006-01-16 16:50:04 +0000591 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000592 struct gfs2_holder sd_qc_gh;
593
594 /* Daemon stuff */
595
David Teiglandb3b94fa2006-01-16 16:50:04 +0000596 struct task_struct *sd_logd_process;
597 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000598
David Teiglandb3b94fa2006-01-16 16:50:04 +0000599 /* Quota stuff */
600
601 struct list_head sd_quota_list;
602 atomic_t sd_quota_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000603 struct mutex sd_quota_mutex;
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000604 wait_queue_head_t sd_quota_wait;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000605 struct list_head sd_trunc_list;
606 spinlock_t sd_trunc_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000607
608 unsigned int sd_quota_slots;
609 unsigned int sd_quota_chunks;
610 unsigned char **sd_quota_bitmap;
611
Steven Whitehousecd915492006-09-04 12:49:07 -0400612 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000613
614 /* Log stuff */
615
616 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000617
618 unsigned int sd_log_blks_reserved;
619 unsigned int sd_log_commited_buf;
Robert Peterson2332c442007-06-18 14:50:20 -0500620 unsigned int sd_log_commited_databuf;
Benjamin Marzinski2e95e3f2010-03-10 18:10:19 -0600621 int sd_log_commited_revoke;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000622
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500623 atomic_t sd_log_pinned;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000624 unsigned int sd_log_num_buf;
625 unsigned int sd_log_num_revoke;
626 unsigned int sd_log_num_rg;
627 unsigned int sd_log_num_databuf;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000628
David Teiglandb3b94fa2006-01-16 16:50:04 +0000629 struct list_head sd_log_le_buf;
630 struct list_head sd_log_le_revoke;
631 struct list_head sd_log_le_rg;
632 struct list_head sd_log_le_databuf;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100633 struct list_head sd_log_le_ordered;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000634
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500635 atomic_t sd_log_thresh1;
636 atomic_t sd_log_thresh2;
Steven Whitehousefd041f02007-11-08 14:55:03 +0000637 atomic_t sd_log_blks_free;
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500638 wait_queue_head_t sd_log_waitq;
639 wait_queue_head_t sd_logd_waitq;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000640
Steven Whitehousecd915492006-09-04 12:49:07 -0400641 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000642 unsigned int sd_log_head;
643 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000644 int sd_log_idle;
645
Steven Whitehouse484adff2006-03-29 09:12:12 -0500646 struct rw_semaphore sd_log_flush_lock;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100647 atomic_t sd_log_in_flight;
648 wait_queue_head_t sd_log_flush_wait;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000649
650 unsigned int sd_log_flush_head;
Steven Whitehousecd915492006-09-04 12:49:07 -0400651 u64 sd_log_flush_wrapped;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000652
Dave Chinnerd6a079e2011-03-11 11:52:25 +0000653 spinlock_t sd_ail_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000654 struct list_head sd_ail1_list;
655 struct list_head sd_ail2_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000656
657 /* Replay stuff */
658
659 struct list_head sd_revoke_list;
660 unsigned int sd_replay_tail;
661
662 unsigned int sd_found_blocks;
663 unsigned int sd_found_revokes;
664 unsigned int sd_replayed_blocks;
665
666 /* For quiescing the filesystem */
667
668 struct gfs2_holder sd_freeze_gh;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000669 struct mutex sd_freeze_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000670 unsigned int sd_freeze_count;
671
David Teiglandb3b94fa2006-01-16 16:50:04 +0000672 char sd_fsname[GFS2_FSNAME_LEN];
673 char sd_table_name[GFS2_FSNAME_LEN];
674 char sd_proto_name[GFS2_FSNAME_LEN];
675
676 /* Debugging crud */
677
678 unsigned long sd_last_warning;
Robert Peterson5f882092007-04-18 11:41:11 -0500679 struct dentry *debugfs_dir; /* debugfs directory */
680 struct dentry *debugfs_dentry_glocks; /* for debugfs */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000681};
682
683#endif /* __INCORE_DOT_H__ */
684