Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
29d38cd1 | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #ifndef __INCORE_DOT_H__ | |
11 | #define __INCORE_DOT_H__ | |
12 | ||
f2f7ba52 | 13 | #include <linux/fs.h> |
57cc7215 | 14 | #include <linux/kobject.h> |
c4f68a13 | 15 | #include <linux/workqueue.h> |
f057f6cd SW |
16 | #include <linux/dlm.h> |
17 | #include <linux/buffer_head.h> | |
bc015cb8 SW |
18 | #include <linux/rcupdate.h> |
19 | #include <linux/rculist_bl.h> | |
3942ae53 | 20 | #include <linux/completion.h> |
7c9ca621 | 21 | #include <linux/rbtree.h> |
a245769f SW |
22 | #include <linux/ktime.h> |
23 | #include <linux/percpu.h> | |
f2f7ba52 | 24 | |
b3b94faa DT |
25 | #define DIO_WAIT 0x00000010 |
26 | #define DIO_METADATA 0x00000020 | |
b3b94faa DT |
27 | |
28 | struct gfs2_log_operations; | |
29 | struct gfs2_log_element; | |
b3b94faa DT |
30 | struct gfs2_holder; |
31 | struct gfs2_glock; | |
b3b94faa | 32 | struct gfs2_quota_data; |
b3b94faa DT |
33 | struct gfs2_trans; |
34 | struct gfs2_ail; | |
35 | struct gfs2_jdesc; | |
b3b94faa | 36 | struct gfs2_sbd; |
f057f6cd | 37 | struct lm_lockops; |
b3b94faa DT |
38 | |
39 | typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); | |
40 | ||
bb8d8a6f SW |
41 | struct gfs2_log_header_host { |
42 | u64 lh_sequence; /* Sequence number of this transaction */ | |
43 | u32 lh_flags; /* GFS2_LOG_HEAD_... */ | |
44 | u32 lh_tail; /* Block number of log tail */ | |
45 | u32 lh_blkno; | |
46 | u32 lh_hash; | |
47 | }; | |
48 | ||
b3b94faa DT |
49 | /* |
50 | * Structure of operations that are associated with each | |
51 | * type of element in the log. | |
52 | */ | |
53 | ||
54 | struct gfs2_log_operations { | |
55 | void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le); | |
b3b94faa DT |
56 | void (*lo_before_commit) (struct gfs2_sbd *sdp); |
57 | void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); | |
58 | void (*lo_before_scan) (struct gfs2_jdesc *jd, | |
55167622 | 59 | struct gfs2_log_header_host *head, int pass); |
b3b94faa DT |
60 | int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, |
61 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
62 | int pass); | |
63 | void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); | |
b09e593d | 64 | const char *lo_name; |
b3b94faa DT |
65 | }; |
66 | ||
67 | struct gfs2_log_element { | |
68 | struct list_head le_list; | |
b09e593d | 69 | const struct gfs2_log_operations *le_ops; |
b3b94faa DT |
70 | }; |
71 | ||
60a0b8f9 SW |
72 | #define GBF_FULL 1 |
73 | ||
b3b94faa DT |
74 | struct gfs2_bitmap { |
75 | struct buffer_head *bi_bh; | |
76 | char *bi_clone; | |
60a0b8f9 | 77 | unsigned long bi_flags; |
cd915493 SW |
78 | u32 bi_offset; |
79 | u32 bi_start; | |
80 | u32 bi_len; | |
b3b94faa DT |
81 | }; |
82 | ||
83 | struct gfs2_rgrpd { | |
7c9ca621 | 84 | struct rb_node rd_node; /* Link with superblock */ |
b3b94faa | 85 | struct gfs2_glock *rd_gl; /* Glock for this rgrp */ |
bb8d8a6f SW |
86 | u64 rd_addr; /* grp block disk address */ |
87 | u64 rd_data0; /* first data location */ | |
88 | u32 rd_length; /* length of rgrp header in fs blocks */ | |
89 | u32 rd_data; /* num of data blocks in rgrp */ | |
90 | u32 rd_bitbytes; /* number of bytes in data bitmaps */ | |
cfc8b549 | 91 | u32 rd_free; |
73f74948 SW |
92 | u32 rd_free_clone; |
93 | u32 rd_dinodes; | |
d8b71f73 | 94 | u64 rd_igeneration; |
b3b94faa | 95 | struct gfs2_bitmap *rd_bits; |
b3b94faa | 96 | struct gfs2_sbd *rd_sbd; |
73f74948 | 97 | u32 rd_last_alloc; |
1ce97e56 | 98 | u32 rd_flags; |
09010978 SW |
99 | #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 */ | |
b3b94faa DT |
103 | }; |
104 | ||
105 | enum gfs2_state_bits { | |
106 | BH_Pinned = BH_PrivateStart, | |
f42faf4f | 107 | BH_Escaped = BH_PrivateStart + 1, |
64dd153c | 108 | BH_Zeronew = BH_PrivateStart + 2, |
b3b94faa DT |
109 | }; |
110 | ||
111 | BUFFER_FNS(Pinned, pinned) | |
112 | TAS_BUFFER_FNS(Pinned, pinned) | |
f42faf4f SW |
113 | BUFFER_FNS(Escaped, escaped) |
114 | TAS_BUFFER_FNS(Escaped, escaped) | |
64dd153c BM |
115 | BUFFER_FNS(Zeronew, zeronew) |
116 | TAS_BUFFER_FNS(Zeronew, zeronew) | |
b3b94faa DT |
117 | |
118 | struct gfs2_bufdata { | |
119 | struct buffer_head *bd_bh; | |
120 | struct gfs2_glock *bd_gl; | |
121 | ||
82e86087 SW |
122 | union { |
123 | struct list_head list_tr; | |
124 | u64 blkno; | |
125 | } u; | |
126 | #define bd_list_tr u.list_tr | |
127 | #define bd_blkno u.blkno | |
128 | ||
b3b94faa DT |
129 | struct gfs2_log_element bd_le; |
130 | ||
131 | struct gfs2_ail *bd_ail; | |
132 | struct list_head bd_ail_st_list; | |
133 | struct list_head bd_ail_gl_list; | |
134 | }; | |
135 | ||
f057f6cd SW |
136 | /* |
137 | * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a | |
138 | * prefix of lock_dlm_ gets awkward. | |
139 | */ | |
140 | ||
141 | #define GDLM_STRNAME_BYTES 25 | |
142 | #define GDLM_LVB_SIZE 32 | |
143 | ||
e0c2a9aa DT |
144 | /* |
145 | * ls_recover_flags: | |
146 | * | |
147 | * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been | |
148 | * held by failed nodes whose journals need recovery. Those locks should | |
149 | * only be used for journal recovery until the journal recovery is done. | |
150 | * This is set by the dlm recover_prep callback and cleared by the | |
151 | * gfs2_control thread when journal recovery is complete. To avoid | |
152 | * races between recover_prep setting and gfs2_control clearing, recover_spin | |
153 | * is held while changing this bit and reading/writing recover_block | |
154 | * and recover_start. | |
155 | * | |
156 | * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. | |
157 | * | |
158 | * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing | |
159 | * recovery of all journals before allowing other nodes to mount the fs. | |
160 | * This is cleared when FIRST_MOUNT_DONE is set. | |
161 | * | |
162 | * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished | |
163 | * recovery of all journals, and now allows other nodes to mount the fs. | |
164 | * | |
165 | * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared | |
166 | * BLOCK_LOCKS for the first time. The gfs2_control thread should now | |
167 | * control clearing BLOCK_LOCKS for further recoveries. | |
168 | * | |
169 | * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. | |
170 | * | |
171 | * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() | |
172 | * and recover_done(), i.e. set while recover_block == recover_start. | |
173 | */ | |
174 | ||
f057f6cd SW |
175 | enum { |
176 | DFL_BLOCK_LOCKS = 0, | |
e0c2a9aa DT |
177 | DFL_NO_DLM_OPS = 1, |
178 | DFL_FIRST_MOUNT = 2, | |
179 | DFL_FIRST_MOUNT_DONE = 3, | |
180 | DFL_MOUNT_DONE = 4, | |
181 | DFL_UNMOUNT = 5, | |
182 | DFL_DLM_RECOVERY = 6, | |
f057f6cd SW |
183 | }; |
184 | ||
185 | struct lm_lockname { | |
186 | u64 ln_number; | |
187 | unsigned int ln_type; | |
188 | }; | |
189 | ||
190 | #define lm_name_equal(name1, name2) \ | |
191 | (((name1)->ln_number == (name2)->ln_number) && \ | |
192 | ((name1)->ln_type == (name2)->ln_type)) | |
193 | ||
194 | ||
b3b94faa | 195 | struct gfs2_glock_operations { |
b5d32bea | 196 | void (*go_xmote_th) (struct gfs2_glock *gl); |
6802e340 | 197 | int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); |
1a14d3a6 | 198 | void (*go_inval) (struct gfs2_glock *gl, int flags); |
97cc1025 | 199 | int (*go_demote_ok) (const struct gfs2_glock *gl); |
1a14d3a6 SW |
200 | int (*go_lock) (struct gfs2_holder *gh); |
201 | void (*go_unlock) (struct gfs2_holder *gh); | |
6802e340 | 202 | int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); |
b94a170e | 203 | void (*go_callback) (struct gfs2_glock *gl); |
8fb4b536 | 204 | const int go_type; |
009d8518 SW |
205 | const unsigned long go_flags; |
206 | #define GLOF_ASPACE 1 | |
b3b94faa DT |
207 | }; |
208 | ||
a245769f SW |
209 | enum { |
210 | GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ | |
211 | GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ | |
212 | GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ | |
213 | GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ | |
214 | GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ | |
215 | GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ | |
216 | GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ | |
217 | GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ | |
218 | GFS2_NR_LKSTATS | |
219 | }; | |
220 | ||
221 | struct gfs2_lkstats { | |
222 | s64 stats[GFS2_NR_LKSTATS]; | |
223 | }; | |
224 | ||
b3b94faa | 225 | enum { |
b3b94faa | 226 | /* States */ |
6802e340 | 227 | HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ |
b3b94faa | 228 | HIF_FIRST = 7, |
fee852e3 | 229 | HIF_WAIT = 10, |
b3b94faa DT |
230 | }; |
231 | ||
232 | struct gfs2_holder { | |
233 | struct list_head gh_list; | |
234 | ||
235 | struct gfs2_glock *gh_gl; | |
b1e058da | 236 | struct pid *gh_owner_pid; |
b3b94faa | 237 | unsigned int gh_state; |
fe1bdedc | 238 | unsigned gh_flags; |
b3b94faa DT |
239 | |
240 | int gh_error; | |
6802e340 | 241 | unsigned long gh_iflags; /* HIF_... */ |
d0dc80db | 242 | unsigned long gh_ip; |
b3b94faa DT |
243 | }; |
244 | ||
245 | enum { | |
6802e340 | 246 | GLF_LOCK = 1, |
6802e340 SW |
247 | GLF_DEMOTE = 3, |
248 | GLF_PENDING_DEMOTE = 4, | |
249 | GLF_DEMOTE_IN_PROGRESS = 5, | |
250 | GLF_DIRTY = 6, | |
251 | GLF_LFLUSH = 7, | |
252 | GLF_INVALIDATE_IN_PROGRESS = 8, | |
253 | GLF_REPLY_PENDING = 9, | |
f057f6cd SW |
254 | GLF_INITIAL = 10, |
255 | GLF_FROZEN = 11, | |
7b5e3d5f | 256 | GLF_QUEUED = 12, |
627c10b7 SW |
257 | GLF_LRU = 13, |
258 | GLF_OBJECT = 14, /* Used only for tracing */ | |
a245769f | 259 | GLF_BLOCKING = 15, |
b3b94faa DT |
260 | }; |
261 | ||
262 | struct gfs2_glock { | |
bc015cb8 | 263 | struct hlist_bl_node gl_list; |
a245769f | 264 | struct gfs2_sbd *gl_sbd; |
b3b94faa DT |
265 | unsigned long gl_flags; /* GLF_... */ |
266 | struct lm_lockname gl_name; | |
16feb9fe | 267 | atomic_t gl_ref; |
b3b94faa DT |
268 | |
269 | spinlock_t gl_spin; | |
270 | ||
47a25380 SW |
271 | /* State fields protected by gl_spin */ |
272 | unsigned int gl_state:2, /* Current state */ | |
273 | gl_target:2, /* Target state */ | |
274 | gl_demote_state:2, /* State requested by remote node */ | |
275 | gl_req:2, /* State in last dlm request */ | |
276 | gl_reply:8; /* Last reply from the dlm */ | |
277 | ||
37b2fa6a | 278 | unsigned int gl_hash; |
3b8249f6 | 279 | unsigned long gl_demote_time; /* time of first demote request */ |
7cf8dcd3 | 280 | long gl_hold_time; |
b3b94faa | 281 | struct list_head gl_holders; |
b3b94faa | 282 | |
8fb4b536 | 283 | const struct gfs2_glock_operations *gl_ops; |
a245769f SW |
284 | ktime_t gl_dstamp; |
285 | struct gfs2_lkstats gl_stats; | |
f057f6cd SW |
286 | struct dlm_lksb gl_lksb; |
287 | char gl_lvb[32]; | |
c4f68a13 | 288 | unsigned long gl_tchange; |
b3b94faa DT |
289 | void *gl_object; |
290 | ||
97cc1025 | 291 | struct list_head gl_lru; |
b3b94faa DT |
292 | struct list_head gl_ail_list; |
293 | atomic_t gl_ail_count; | |
f42ab085 | 294 | atomic_t gl_revokes; |
c4f68a13 | 295 | struct delayed_work gl_work; |
b94a170e | 296 | struct work_struct gl_delete; |
bc015cb8 | 297 | struct rcu_head gl_rcu; |
b3b94faa DT |
298 | }; |
299 | ||
da755fdb SW |
300 | #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
301 | ||
564e12b1 | 302 | struct gfs2_qadata { /* quota allocation data */ |
b3b94faa | 303 | /* Quota stuff */ |
564e12b1 BP |
304 | struct gfs2_quota_data *qa_qd[2*MAXQUOTAS]; |
305 | struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS]; | |
306 | unsigned int qa_qd_num; | |
307 | }; | |
b3b94faa | 308 | |
564e12b1 BP |
309 | struct gfs2_blkreserv { |
310 | u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */ | |
311 | struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */ | |
b3b94faa DT |
312 | }; |
313 | ||
314 | enum { | |
bfded27b | 315 | GIF_INVALID = 0, |
b3b94faa | 316 | GIF_QD_LOCKED = 1, |
40ac218f | 317 | GIF_ALLOC_FAILED = 2, |
b3b94faa DT |
318 | GIF_SW_PAGED = 3, |
319 | }; | |
320 | ||
bb8d8a6f | 321 | |
b3b94faa | 322 | struct gfs2_inode { |
320dd101 | 323 | struct inode i_inode; |
dbb7cae2 SW |
324 | u64 i_no_addr; |
325 | u64 i_no_formal_ino; | |
bcf0b5b3 | 326 | u64 i_generation; |
3767ac21 | 327 | u64 i_eattr; |
b3b94faa | 328 | unsigned long i_flags; /* GIF_... */ |
feaa7bba | 329 | struct gfs2_glock *i_gl; /* Move into i_gh? */ |
b3b94faa | 330 | struct gfs2_holder i_iopen_gh; |
f42faf4f | 331 | struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
564e12b1 BP |
332 | struct gfs2_qadata *i_qadata; /* quota allocation data */ |
333 | struct gfs2_blkreserv *i_res; /* resource group block reservation */ | |
54335b1f | 334 | struct gfs2_rgrpd *i_rgd; |
ce276b06 | 335 | u64 i_goal; /* goal block for allocations */ |
b3b94faa | 336 | struct rw_semaphore i_rw_mutex; |
813e0c46 | 337 | struct list_head i_trunc_list; |
17d539f0 | 338 | __be64 *i_hash_cache; |
ad6203f2 | 339 | u32 i_entries; |
383f01fb | 340 | u32 i_diskflags; |
ecc30c79 | 341 | u8 i_height; |
9a004508 | 342 | u8 i_depth; |
b3b94faa DT |
343 | }; |
344 | ||
feaa7bba SW |
345 | /* |
346 | * Since i_inode is the first element of struct gfs2_inode, | |
347 | * this is effectively a cast. | |
348 | */ | |
320dd101 SW |
349 | static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
350 | { | |
351 | return container_of(inode, struct gfs2_inode, i_inode); | |
352 | } | |
353 | ||
bf36a713 | 354 | static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
feaa7bba SW |
355 | { |
356 | return inode->i_sb->s_fs_info; | |
357 | } | |
358 | ||
b3b94faa | 359 | struct gfs2_file { |
f55ab26a | 360 | struct mutex f_fl_mutex; |
b3b94faa | 361 | struct gfs2_holder f_fl_gh; |
b3b94faa DT |
362 | }; |
363 | ||
b3b94faa DT |
364 | struct gfs2_revoke_replay { |
365 | struct list_head rr_list; | |
cd915493 | 366 | u64 rr_blkno; |
b3b94faa DT |
367 | unsigned int rr_where; |
368 | }; | |
369 | ||
b3b94faa DT |
370 | enum { |
371 | QDF_USER = 0, | |
372 | QDF_CHANGE = 1, | |
373 | QDF_LOCKED = 2, | |
662e3a55 | 374 | QDF_REFRESH = 3, |
b3b94faa DT |
375 | }; |
376 | ||
377 | struct gfs2_quota_data { | |
378 | struct list_head qd_list; | |
0a7ab79c AD |
379 | struct list_head qd_reclaim; |
380 | ||
381 | atomic_t qd_count; | |
b3b94faa | 382 | |
cd915493 | 383 | u32 qd_id; |
b3b94faa DT |
384 | unsigned long qd_flags; /* QDF_... */ |
385 | ||
cd915493 SW |
386 | s64 qd_change; |
387 | s64 qd_change_sync; | |
b3b94faa DT |
388 | |
389 | unsigned int qd_slot; | |
390 | unsigned int qd_slot_count; | |
391 | ||
392 | struct buffer_head *qd_bh; | |
393 | struct gfs2_quota_change *qd_bh_qc; | |
394 | unsigned int qd_bh_count; | |
395 | ||
396 | struct gfs2_glock *qd_gl; | |
397 | struct gfs2_quota_lvb qd_qb; | |
398 | ||
cd915493 | 399 | u64 qd_sync_gen; |
b3b94faa | 400 | unsigned long qd_last_warn; |
b3b94faa DT |
401 | }; |
402 | ||
b3b94faa | 403 | struct gfs2_trans { |
d0dc80db | 404 | unsigned long tr_ip; |
b3b94faa DT |
405 | |
406 | unsigned int tr_blocks; | |
407 | unsigned int tr_revokes; | |
408 | unsigned int tr_reserved; | |
409 | ||
e317ffcb | 410 | struct gfs2_holder tr_t_gh; |
b3b94faa DT |
411 | |
412 | int tr_touched; | |
413 | ||
414 | unsigned int tr_num_buf; | |
415 | unsigned int tr_num_buf_new; | |
2332c443 | 416 | unsigned int tr_num_databuf_new; |
b3b94faa | 417 | unsigned int tr_num_buf_rm; |
2332c443 | 418 | unsigned int tr_num_databuf_rm; |
b3b94faa DT |
419 | struct list_head tr_list_buf; |
420 | ||
421 | unsigned int tr_num_revoke; | |
422 | unsigned int tr_num_revoke_rm; | |
423 | }; | |
424 | ||
425 | struct gfs2_ail { | |
426 | struct list_head ai_list; | |
427 | ||
428 | unsigned int ai_first; | |
429 | struct list_head ai_ail1_list; | |
430 | struct list_head ai_ail2_list; | |
b3b94faa DT |
431 | }; |
432 | ||
da6dd40d BP |
433 | struct gfs2_journal_extent { |
434 | struct list_head extent_list; | |
435 | ||
436 | unsigned int lblock; /* First logical block */ | |
437 | u64 dblock; /* First disk block */ | |
438 | u64 blocks; | |
439 | }; | |
440 | ||
b3b94faa DT |
441 | struct gfs2_jdesc { |
442 | struct list_head jd_list; | |
da6dd40d | 443 | struct list_head extent_list; |
6ecd7c2d | 444 | struct work_struct jd_work; |
7359a19c | 445 | struct inode *jd_inode; |
fe64d517 SW |
446 | unsigned long jd_flags; |
447 | #define JDF_RECOVERY 1 | |
b3b94faa | 448 | unsigned int jd_jid; |
b3b94faa | 449 | unsigned int jd_blocks; |
376d3778 | 450 | int jd_recover_error; |
b3b94faa DT |
451 | }; |
452 | ||
bb8d8a6f SW |
453 | struct gfs2_statfs_change_host { |
454 | s64 sc_total; | |
455 | s64 sc_free; | |
456 | s64 sc_dinodes; | |
457 | }; | |
458 | ||
b3b94faa DT |
459 | #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
460 | #define GFS2_QUOTA_OFF 0 | |
461 | #define GFS2_QUOTA_ACCOUNT 1 | |
462 | #define GFS2_QUOTA_ON 2 | |
463 | ||
464 | #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED | |
465 | #define GFS2_DATA_WRITEBACK 1 | |
466 | #define GFS2_DATA_ORDERED 2 | |
467 | ||
d34843d0 BP |
468 | #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
469 | #define GFS2_ERRORS_WITHDRAW 0 | |
470 | #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ | |
471 | #define GFS2_ERRORS_RO 2 /* place holder for future feature */ | |
472 | #define GFS2_ERRORS_PANIC 3 | |
473 | ||
b3b94faa | 474 | struct gfs2_args { |
37ec89e8 SW |
475 | char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
476 | char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ | |
477 | char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ | |
478 | unsigned int ar_spectator:1; /* Don't get a journal */ | |
37ec89e8 | 479 | unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
37ec89e8 | 480 | unsigned int ar_debug:1; /* Oops on errors */ |
37ec89e8 SW |
481 | unsigned int ar_posix_acl:1; /* Enable posix acls */ |
482 | unsigned int ar_quota:2; /* off/account/on */ | |
483 | unsigned int ar_suiddir:1; /* suiddir support */ | |
484 | unsigned int ar_data:2; /* ordered/writeback */ | |
485 | unsigned int ar_meta:1; /* mount metafs */ | |
f15ab561 | 486 | unsigned int ar_discard:1; /* discard requests */ |
d34843d0 | 487 | unsigned int ar_errors:2; /* errors=withdraw | panic */ |
f25934c5 | 488 | unsigned int ar_nobarrier:1; /* do not send barriers */ |
48c2b613 | 489 | int ar_commit; /* Commit interval */ |
3d3c10f2 BM |
490 | int ar_statfs_quantum; /* The fast statfs interval */ |
491 | int ar_quota_quantum; /* The quota interval */ | |
492 | int ar_statfs_percent; /* The % change to force sync */ | |
b3b94faa DT |
493 | }; |
494 | ||
495 | struct gfs2_tune { | |
496 | spinlock_t gt_spin; | |
497 | ||
b3b94faa | 498 | unsigned int gt_logd_secs; |
b3b94faa DT |
499 | |
500 | unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ | |
501 | unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ | |
502 | unsigned int gt_quota_scale_num; /* Numerator */ | |
503 | unsigned int gt_quota_scale_den; /* Denominator */ | |
b3b94faa | 504 | unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
b3b94faa | 505 | unsigned int gt_new_files_jdata; |
b3b94faa | 506 | unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
b3b94faa | 507 | unsigned int gt_complain_secs; |
b3b94faa DT |
508 | unsigned int gt_statfs_quantum; |
509 | unsigned int gt_statfs_slow; | |
510 | }; | |
511 | ||
b3b94faa DT |
512 | enum { |
513 | SDF_JOURNAL_CHECKED = 0, | |
514 | SDF_JOURNAL_LIVE = 1, | |
515 | SDF_SHUTDOWN = 2, | |
254db57f | 516 | SDF_NOBARRIERS = 3, |
fe64d517 | 517 | SDF_NORECOVERY = 4, |
913a71d2 | 518 | SDF_DEMOTE = 5, |
ba6e9364 | 519 | SDF_NOJOURNALID = 6, |
e8ca5cc5 | 520 | SDF_RORECOVERY = 7, /* read only recovery */ |
b3b94faa DT |
521 | }; |
522 | ||
b3b94faa DT |
523 | #define GFS2_FSNAME_LEN 256 |
524 | ||
bb8d8a6f SW |
525 | struct gfs2_inum_host { |
526 | u64 no_formal_ino; | |
527 | u64 no_addr; | |
528 | }; | |
529 | ||
530 | struct gfs2_sb_host { | |
531 | u32 sb_magic; | |
532 | u32 sb_type; | |
533 | u32 sb_format; | |
534 | ||
535 | u32 sb_fs_format; | |
536 | u32 sb_multihost_format; | |
537 | u32 sb_bsize; | |
538 | u32 sb_bsize_shift; | |
539 | ||
540 | struct gfs2_inum_host sb_master_dir; | |
541 | struct gfs2_inum_host sb_root_dir; | |
542 | ||
543 | char sb_lockproto[GFS2_LOCKNAME_LEN]; | |
544 | char sb_locktable[GFS2_LOCKNAME_LEN]; | |
545 | }; | |
546 | ||
f057f6cd SW |
547 | /* |
548 | * lm_mount() return values | |
549 | * | |
550 | * ls_jid - the journal ID this node should use | |
551 | * ls_first - this node is the first to mount the file system | |
552 | * ls_lockspace - lock module's context for this file system | |
553 | * ls_ops - lock module's functions | |
554 | */ | |
555 | ||
556 | struct lm_lockstruct { | |
feb47ca9 | 557 | int ls_jid; |
f057f6cd | 558 | unsigned int ls_first; |
f057f6cd SW |
559 | unsigned int ls_nodir; |
560 | const struct lm_lockops *ls_ops; | |
f057f6cd SW |
561 | dlm_lockspace_t *ls_dlm; |
562 | ||
e0c2a9aa DT |
563 | int ls_recover_jid_done; /* These two are deprecated, */ |
564 | int ls_recover_jid_status; /* used previously by gfs_controld */ | |
565 | ||
566 | struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ | |
567 | struct dlm_lksb ls_control_lksb; /* control_lock */ | |
568 | char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ | |
569 | struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ | |
570 | ||
571 | spinlock_t ls_recover_spin; /* protects following fields */ | |
572 | unsigned long ls_recover_flags; /* DFL_ */ | |
573 | uint32_t ls_recover_mount; /* gen in first recover_done cb */ | |
574 | uint32_t ls_recover_start; /* gen in last recover_done cb */ | |
575 | uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ | |
576 | uint32_t ls_recover_size; /* size of recover_submit, recover_result */ | |
577 | uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ | |
578 | uint32_t *ls_recover_result; /* result of last jid recovery */ | |
f057f6cd SW |
579 | }; |
580 | ||
a245769f SW |
581 | struct gfs2_pcpu_lkstats { |
582 | /* One struct for each glock type */ | |
583 | struct gfs2_lkstats lkstats[10]; | |
584 | }; | |
585 | ||
b3b94faa DT |
586 | struct gfs2_sbd { |
587 | struct super_block *sd_vfs; | |
a245769f | 588 | struct gfs2_pcpu_lkstats __percpu *sd_lkstats; |
b3b94faa DT |
589 | struct kobject sd_kobj; |
590 | unsigned long sd_flags; /* SDF_... */ | |
f50dfaf7 | 591 | struct gfs2_sb_host sd_sb; |
b3b94faa DT |
592 | |
593 | /* Constants computed on mount */ | |
594 | ||
cd915493 SW |
595 | u32 sd_fsb2bb; |
596 | u32 sd_fsb2bb_shift; | |
597 | u32 sd_diptrs; /* Number of pointers in a dinode */ | |
598 | u32 sd_inptrs; /* Number of pointers in a indirect block */ | |
599 | u32 sd_jbsize; /* Size of a journaled data block */ | |
600 | u32 sd_hash_bsize; /* sizeof(exhash block) */ | |
601 | u32 sd_hash_bsize_shift; | |
602 | u32 sd_hash_ptrs; /* Number of pointers in a hash block */ | |
603 | u32 sd_qc_per_block; | |
604 | u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ | |
605 | u32 sd_max_height; /* Max height of a file's metadata tree */ | |
ecc30c79 | 606 | u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
cd915493 | 607 | u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
ecc30c79 | 608 | u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
b3b94faa DT |
609 | |
610 | struct gfs2_args sd_args; /* Mount arguments */ | |
611 | struct gfs2_tune sd_tune; /* Filesystem tuning structure */ | |
612 | ||
613 | /* Lock Stuff */ | |
614 | ||
615 | struct lm_lockstruct sd_lockstruct; | |
b3b94faa DT |
616 | struct gfs2_holder sd_live_gh; |
617 | struct gfs2_glock *sd_rename_gl; | |
618 | struct gfs2_glock *sd_trans_gl; | |
e402746a SW |
619 | wait_queue_head_t sd_glock_wait; |
620 | atomic_t sd_glock_disposal; | |
3942ae53 | 621 | struct completion sd_locking_init; |
e0c2a9aa | 622 | struct delayed_work sd_control_work; |
b3b94faa DT |
623 | |
624 | /* Inode Stuff */ | |
625 | ||
9b8df98f SW |
626 | struct dentry *sd_master_dir; |
627 | struct dentry *sd_root_dir; | |
628 | ||
f42faf4f | 629 | struct inode *sd_jindex; |
f42faf4f | 630 | struct inode *sd_statfs_inode; |
f42faf4f | 631 | struct inode *sd_sc_inode; |
f42faf4f SW |
632 | struct inode *sd_qc_inode; |
633 | struct inode *sd_rindex; | |
634 | struct inode *sd_quota_inode; | |
b3b94faa | 635 | |
b3b94faa DT |
636 | /* StatFS stuff */ |
637 | ||
638 | spinlock_t sd_statfs_spin; | |
bd209cc0 AV |
639 | struct gfs2_statfs_change_host sd_statfs_master; |
640 | struct gfs2_statfs_change_host sd_statfs_local; | |
3d3c10f2 | 641 | int sd_statfs_force_sync; |
b3b94faa DT |
642 | |
643 | /* Resource group stuff */ | |
644 | ||
cf45b752 | 645 | int sd_rindex_uptodate; |
b3b94faa | 646 | spinlock_t sd_rindex_spin; |
7c9ca621 | 647 | struct rb_root sd_rindex_tree; |
b3b94faa | 648 | unsigned int sd_rgrps; |
3921120e | 649 | unsigned int sd_max_rg_data; |
b3b94faa DT |
650 | |
651 | /* Journal index stuff */ | |
652 | ||
653 | struct list_head sd_jindex_list; | |
654 | spinlock_t sd_jindex_spin; | |
f55ab26a | 655 | struct mutex sd_jindex_mutex; |
b3b94faa | 656 | unsigned int sd_journals; |
b3b94faa DT |
657 | |
658 | struct gfs2_jdesc *sd_jdesc; | |
659 | struct gfs2_holder sd_journal_gh; | |
660 | struct gfs2_holder sd_jinode_gh; | |
661 | ||
b3b94faa | 662 | struct gfs2_holder sd_sc_gh; |
b3b94faa DT |
663 | struct gfs2_holder sd_qc_gh; |
664 | ||
665 | /* Daemon stuff */ | |
666 | ||
b3b94faa DT |
667 | struct task_struct *sd_logd_process; |
668 | struct task_struct *sd_quotad_process; | |
b3b94faa | 669 | |
b3b94faa DT |
670 | /* Quota stuff */ |
671 | ||
672 | struct list_head sd_quota_list; | |
673 | atomic_t sd_quota_count; | |
f55ab26a | 674 | struct mutex sd_quota_mutex; |
37b2c837 | 675 | wait_queue_head_t sd_quota_wait; |
813e0c46 SW |
676 | struct list_head sd_trunc_list; |
677 | spinlock_t sd_trunc_lock; | |
b3b94faa DT |
678 | |
679 | unsigned int sd_quota_slots; | |
680 | unsigned int sd_quota_chunks; | |
681 | unsigned char **sd_quota_bitmap; | |
682 | ||
cd915493 | 683 | u64 sd_quota_sync_gen; |
b3b94faa DT |
684 | |
685 | /* Log stuff */ | |
686 | ||
687 | spinlock_t sd_log_lock; | |
b3b94faa DT |
688 | |
689 | unsigned int sd_log_blks_reserved; | |
690 | unsigned int sd_log_commited_buf; | |
2332c443 | 691 | unsigned int sd_log_commited_databuf; |
2e95e3f6 | 692 | int sd_log_commited_revoke; |
b3b94faa | 693 | |
5e687eac | 694 | atomic_t sd_log_pinned; |
b3b94faa DT |
695 | unsigned int sd_log_num_buf; |
696 | unsigned int sd_log_num_revoke; | |
697 | unsigned int sd_log_num_rg; | |
698 | unsigned int sd_log_num_databuf; | |
f42faf4f | 699 | |
b3b94faa DT |
700 | struct list_head sd_log_le_buf; |
701 | struct list_head sd_log_le_revoke; | |
702 | struct list_head sd_log_le_rg; | |
703 | struct list_head sd_log_le_databuf; | |
d7b616e2 | 704 | struct list_head sd_log_le_ordered; |
b3b94faa | 705 | |
5e687eac BM |
706 | atomic_t sd_log_thresh1; |
707 | atomic_t sd_log_thresh2; | |
fd041f0b | 708 | atomic_t sd_log_blks_free; |
5e687eac BM |
709 | wait_queue_head_t sd_log_waitq; |
710 | wait_queue_head_t sd_logd_waitq; | |
b3b94faa | 711 | |
cd915493 | 712 | u64 sd_log_sequence; |
b3b94faa DT |
713 | unsigned int sd_log_head; |
714 | unsigned int sd_log_tail; | |
b3b94faa DT |
715 | int sd_log_idle; |
716 | ||
484adff8 | 717 | struct rw_semaphore sd_log_flush_lock; |
16615be1 | 718 | atomic_t sd_log_in_flight; |
e8c92ed7 | 719 | struct bio *sd_log_bio; |
16615be1 | 720 | wait_queue_head_t sd_log_flush_wait; |
e8c92ed7 | 721 | int sd_log_error; |
b3b94faa DT |
722 | |
723 | unsigned int sd_log_flush_head; | |
cd915493 | 724 | u64 sd_log_flush_wrapped; |
b3b94faa | 725 | |
d6a079e8 | 726 | spinlock_t sd_ail_lock; |
b3b94faa DT |
727 | struct list_head sd_ail1_list; |
728 | struct list_head sd_ail2_list; | |
b3b94faa DT |
729 | |
730 | /* Replay stuff */ | |
731 | ||
732 | struct list_head sd_revoke_list; | |
733 | unsigned int sd_replay_tail; | |
734 | ||
735 | unsigned int sd_found_blocks; | |
736 | unsigned int sd_found_revokes; | |
737 | unsigned int sd_replayed_blocks; | |
738 | ||
739 | /* For quiescing the filesystem */ | |
740 | ||
741 | struct gfs2_holder sd_freeze_gh; | |
f55ab26a | 742 | struct mutex sd_freeze_lock; |
b3b94faa DT |
743 | unsigned int sd_freeze_count; |
744 | ||
b3b94faa DT |
745 | char sd_fsname[GFS2_FSNAME_LEN]; |
746 | char sd_table_name[GFS2_FSNAME_LEN]; | |
747 | char sd_proto_name[GFS2_FSNAME_LEN]; | |
748 | ||
749 | /* Debugging crud */ | |
750 | ||
751 | unsigned long sd_last_warning; | |
5f882096 | 752 | struct dentry *debugfs_dir; /* debugfs directory */ |
a245769f SW |
753 | struct dentry *debugfs_dentry_glocks; |
754 | struct dentry *debugfs_dentry_glstats; | |
755 | struct dentry *debugfs_dentry_sbstats; | |
b3b94faa DT |
756 | }; |
757 | ||
a245769f SW |
758 | static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) |
759 | { | |
760 | gl->gl_stats.stats[which]++; | |
761 | } | |
762 | ||
763 | static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) | |
764 | { | |
765 | const struct gfs2_sbd *sdp = gl->gl_sbd; | |
766 | preempt_disable(); | |
767 | this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; | |
768 | preempt_enable(); | |
769 | } | |
770 | ||
b3b94faa DT |
771 | #endif /* __INCORE_DOT_H__ */ |
772 |