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Commit | Line | Data |
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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> |
f2f7ba52 | 22 | |
b3b94faa DT |
23 | #define DIO_WAIT 0x00000010 |
24 | #define DIO_METADATA 0x00000020 | |
b3b94faa DT |
25 | |
26 | struct gfs2_log_operations; | |
27 | struct gfs2_log_element; | |
b3b94faa DT |
28 | struct gfs2_holder; |
29 | struct gfs2_glock; | |
b3b94faa | 30 | struct gfs2_quota_data; |
b3b94faa DT |
31 | struct gfs2_trans; |
32 | struct gfs2_ail; | |
33 | struct gfs2_jdesc; | |
b3b94faa | 34 | struct gfs2_sbd; |
f057f6cd | 35 | struct lm_lockops; |
b3b94faa DT |
36 | |
37 | typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); | |
38 | ||
bb8d8a6f SW |
39 | struct gfs2_log_header_host { |
40 | u64 lh_sequence; /* Sequence number of this transaction */ | |
41 | u32 lh_flags; /* GFS2_LOG_HEAD_... */ | |
42 | u32 lh_tail; /* Block number of log tail */ | |
43 | u32 lh_blkno; | |
44 | u32 lh_hash; | |
45 | }; | |
46 | ||
b3b94faa DT |
47 | /* |
48 | * Structure of operations that are associated with each | |
49 | * type of element in the log. | |
50 | */ | |
51 | ||
52 | struct gfs2_log_operations { | |
53 | void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le); | |
b3b94faa DT |
54 | void (*lo_before_commit) (struct gfs2_sbd *sdp); |
55 | void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); | |
56 | void (*lo_before_scan) (struct gfs2_jdesc *jd, | |
55167622 | 57 | struct gfs2_log_header_host *head, int pass); |
b3b94faa DT |
58 | int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, |
59 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
60 | int pass); | |
61 | void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); | |
b09e593d | 62 | const char *lo_name; |
b3b94faa DT |
63 | }; |
64 | ||
65 | struct gfs2_log_element { | |
66 | struct list_head le_list; | |
b09e593d | 67 | const struct gfs2_log_operations *le_ops; |
b3b94faa DT |
68 | }; |
69 | ||
60a0b8f9 SW |
70 | #define GBF_FULL 1 |
71 | ||
b3b94faa DT |
72 | struct gfs2_bitmap { |
73 | struct buffer_head *bi_bh; | |
74 | char *bi_clone; | |
60a0b8f9 | 75 | unsigned long bi_flags; |
cd915493 SW |
76 | u32 bi_offset; |
77 | u32 bi_start; | |
78 | u32 bi_len; | |
b3b94faa DT |
79 | }; |
80 | ||
81 | struct gfs2_rgrpd { | |
7c9ca621 | 82 | struct rb_node rd_node; /* Link with superblock */ |
b3b94faa | 83 | struct gfs2_glock *rd_gl; /* Glock for this rgrp */ |
bb8d8a6f SW |
84 | u64 rd_addr; /* grp block disk address */ |
85 | u64 rd_data0; /* first data location */ | |
86 | u32 rd_length; /* length of rgrp header in fs blocks */ | |
87 | u32 rd_data; /* num of data blocks in rgrp */ | |
88 | u32 rd_bitbytes; /* number of bytes in data bitmaps */ | |
cfc8b549 | 89 | u32 rd_free; |
73f74948 SW |
90 | u32 rd_free_clone; |
91 | u32 rd_dinodes; | |
d8b71f73 | 92 | u64 rd_igeneration; |
b3b94faa | 93 | struct gfs2_bitmap *rd_bits; |
b3b94faa | 94 | struct gfs2_sbd *rd_sbd; |
73f74948 | 95 | u32 rd_last_alloc; |
1ce97e56 | 96 | u32 rd_flags; |
09010978 SW |
97 | #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 */ | |
b3b94faa DT |
101 | }; |
102 | ||
103 | enum gfs2_state_bits { | |
104 | BH_Pinned = BH_PrivateStart, | |
f42faf4f | 105 | BH_Escaped = BH_PrivateStart + 1, |
64dd153c | 106 | BH_Zeronew = BH_PrivateStart + 2, |
b3b94faa DT |
107 | }; |
108 | ||
109 | BUFFER_FNS(Pinned, pinned) | |
110 | TAS_BUFFER_FNS(Pinned, pinned) | |
f42faf4f SW |
111 | BUFFER_FNS(Escaped, escaped) |
112 | TAS_BUFFER_FNS(Escaped, escaped) | |
64dd153c BM |
113 | BUFFER_FNS(Zeronew, zeronew) |
114 | TAS_BUFFER_FNS(Zeronew, zeronew) | |
b3b94faa DT |
115 | |
116 | struct gfs2_bufdata { | |
117 | struct buffer_head *bd_bh; | |
118 | struct gfs2_glock *bd_gl; | |
119 | ||
82e86087 SW |
120 | union { |
121 | struct list_head list_tr; | |
122 | u64 blkno; | |
123 | } u; | |
124 | #define bd_list_tr u.list_tr | |
125 | #define bd_blkno u.blkno | |
126 | ||
b3b94faa DT |
127 | struct gfs2_log_element bd_le; |
128 | ||
129 | struct gfs2_ail *bd_ail; | |
130 | struct list_head bd_ail_st_list; | |
131 | struct list_head bd_ail_gl_list; | |
132 | }; | |
133 | ||
f057f6cd SW |
134 | /* |
135 | * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a | |
136 | * prefix of lock_dlm_ gets awkward. | |
137 | */ | |
138 | ||
139 | #define GDLM_STRNAME_BYTES 25 | |
140 | #define GDLM_LVB_SIZE 32 | |
141 | ||
e0c2a9aa DT |
142 | /* |
143 | * ls_recover_flags: | |
144 | * | |
145 | * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been | |
146 | * held by failed nodes whose journals need recovery. Those locks should | |
147 | * only be used for journal recovery until the journal recovery is done. | |
148 | * This is set by the dlm recover_prep callback and cleared by the | |
149 | * gfs2_control thread when journal recovery is complete. To avoid | |
150 | * races between recover_prep setting and gfs2_control clearing, recover_spin | |
151 | * is held while changing this bit and reading/writing recover_block | |
152 | * and recover_start. | |
153 | * | |
154 | * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. | |
155 | * | |
156 | * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing | |
157 | * recovery of all journals before allowing other nodes to mount the fs. | |
158 | * This is cleared when FIRST_MOUNT_DONE is set. | |
159 | * | |
160 | * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished | |
161 | * recovery of all journals, and now allows other nodes to mount the fs. | |
162 | * | |
163 | * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared | |
164 | * BLOCK_LOCKS for the first time. The gfs2_control thread should now | |
165 | * control clearing BLOCK_LOCKS for further recoveries. | |
166 | * | |
167 | * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. | |
168 | * | |
169 | * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() | |
170 | * and recover_done(), i.e. set while recover_block == recover_start. | |
171 | */ | |
172 | ||
f057f6cd SW |
173 | enum { |
174 | DFL_BLOCK_LOCKS = 0, | |
e0c2a9aa DT |
175 | DFL_NO_DLM_OPS = 1, |
176 | DFL_FIRST_MOUNT = 2, | |
177 | DFL_FIRST_MOUNT_DONE = 3, | |
178 | DFL_MOUNT_DONE = 4, | |
179 | DFL_UNMOUNT = 5, | |
180 | DFL_DLM_RECOVERY = 6, | |
f057f6cd SW |
181 | }; |
182 | ||
183 | struct lm_lockname { | |
184 | u64 ln_number; | |
185 | unsigned int ln_type; | |
186 | }; | |
187 | ||
188 | #define lm_name_equal(name1, name2) \ | |
189 | (((name1)->ln_number == (name2)->ln_number) && \ | |
190 | ((name1)->ln_type == (name2)->ln_type)) | |
191 | ||
192 | ||
b3b94faa | 193 | struct gfs2_glock_operations { |
b5d32bea | 194 | void (*go_xmote_th) (struct gfs2_glock *gl); |
6802e340 | 195 | int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); |
1a14d3a6 | 196 | void (*go_inval) (struct gfs2_glock *gl, int flags); |
97cc1025 | 197 | int (*go_demote_ok) (const struct gfs2_glock *gl); |
1a14d3a6 SW |
198 | int (*go_lock) (struct gfs2_holder *gh); |
199 | void (*go_unlock) (struct gfs2_holder *gh); | |
6802e340 | 200 | int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); |
b94a170e | 201 | void (*go_callback) (struct gfs2_glock *gl); |
8fb4b536 | 202 | const int go_type; |
009d8518 SW |
203 | const unsigned long go_flags; |
204 | #define GLOF_ASPACE 1 | |
b3b94faa DT |
205 | }; |
206 | ||
207 | enum { | |
b3b94faa | 208 | /* States */ |
6802e340 | 209 | HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ |
b3b94faa | 210 | HIF_FIRST = 7, |
fee852e3 | 211 | HIF_WAIT = 10, |
b3b94faa DT |
212 | }; |
213 | ||
214 | struct gfs2_holder { | |
215 | struct list_head gh_list; | |
216 | ||
217 | struct gfs2_glock *gh_gl; | |
b1e058da | 218 | struct pid *gh_owner_pid; |
b3b94faa | 219 | unsigned int gh_state; |
fe1bdedc | 220 | unsigned gh_flags; |
b3b94faa DT |
221 | |
222 | int gh_error; | |
6802e340 | 223 | unsigned long gh_iflags; /* HIF_... */ |
d0dc80db | 224 | unsigned long gh_ip; |
b3b94faa DT |
225 | }; |
226 | ||
227 | enum { | |
6802e340 | 228 | GLF_LOCK = 1, |
6802e340 SW |
229 | GLF_DEMOTE = 3, |
230 | GLF_PENDING_DEMOTE = 4, | |
231 | GLF_DEMOTE_IN_PROGRESS = 5, | |
232 | GLF_DIRTY = 6, | |
233 | GLF_LFLUSH = 7, | |
234 | GLF_INVALIDATE_IN_PROGRESS = 8, | |
235 | GLF_REPLY_PENDING = 9, | |
f057f6cd SW |
236 | GLF_INITIAL = 10, |
237 | GLF_FROZEN = 11, | |
7b5e3d5f | 238 | GLF_QUEUED = 12, |
627c10b7 SW |
239 | GLF_LRU = 13, |
240 | GLF_OBJECT = 14, /* Used only for tracing */ | |
b3b94faa DT |
241 | }; |
242 | ||
243 | struct gfs2_glock { | |
bc015cb8 | 244 | struct hlist_bl_node gl_list; |
b3b94faa DT |
245 | unsigned long gl_flags; /* GLF_... */ |
246 | struct lm_lockname gl_name; | |
16feb9fe | 247 | atomic_t gl_ref; |
b3b94faa DT |
248 | |
249 | spinlock_t gl_spin; | |
250 | ||
47a25380 SW |
251 | /* State fields protected by gl_spin */ |
252 | unsigned int gl_state:2, /* Current state */ | |
253 | gl_target:2, /* Target state */ | |
254 | gl_demote_state:2, /* State requested by remote node */ | |
255 | gl_req:2, /* State in last dlm request */ | |
256 | gl_reply:8; /* Last reply from the dlm */ | |
257 | ||
37b2fa6a | 258 | unsigned int gl_hash; |
3b8249f6 | 259 | unsigned long gl_demote_time; /* time of first demote request */ |
7cf8dcd3 | 260 | long gl_hold_time; |
b3b94faa | 261 | struct list_head gl_holders; |
b3b94faa | 262 | |
8fb4b536 | 263 | const struct gfs2_glock_operations *gl_ops; |
f057f6cd SW |
264 | char gl_strname[GDLM_STRNAME_BYTES]; |
265 | struct dlm_lksb gl_lksb; | |
266 | char gl_lvb[32]; | |
c4f68a13 | 267 | unsigned long gl_tchange; |
b3b94faa DT |
268 | void *gl_object; |
269 | ||
97cc1025 | 270 | struct list_head gl_lru; |
b3b94faa DT |
271 | |
272 | struct gfs2_sbd *gl_sbd; | |
273 | ||
b3b94faa DT |
274 | struct list_head gl_ail_list; |
275 | atomic_t gl_ail_count; | |
f42ab085 | 276 | atomic_t gl_revokes; |
c4f68a13 | 277 | struct delayed_work gl_work; |
b94a170e | 278 | struct work_struct gl_delete; |
bc015cb8 | 279 | struct rcu_head gl_rcu; |
b3b94faa DT |
280 | }; |
281 | ||
da755fdb SW |
282 | #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
283 | ||
564e12b1 | 284 | struct gfs2_qadata { /* quota allocation data */ |
b3b94faa | 285 | /* Quota stuff */ |
564e12b1 BP |
286 | struct gfs2_quota_data *qa_qd[2*MAXQUOTAS]; |
287 | struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS]; | |
288 | unsigned int qa_qd_num; | |
289 | }; | |
b3b94faa | 290 | |
564e12b1 BP |
291 | struct gfs2_blkreserv { |
292 | u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */ | |
293 | struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */ | |
b3b94faa DT |
294 | }; |
295 | ||
296 | enum { | |
bfded27b | 297 | GIF_INVALID = 0, |
b3b94faa | 298 | GIF_QD_LOCKED = 1, |
40ac218f | 299 | GIF_ALLOC_FAILED = 2, |
b3b94faa DT |
300 | GIF_SW_PAGED = 3, |
301 | }; | |
302 | ||
bb8d8a6f | 303 | |
b3b94faa | 304 | struct gfs2_inode { |
320dd101 | 305 | struct inode i_inode; |
dbb7cae2 SW |
306 | u64 i_no_addr; |
307 | u64 i_no_formal_ino; | |
bcf0b5b3 | 308 | u64 i_generation; |
3767ac21 | 309 | u64 i_eattr; |
b3b94faa | 310 | unsigned long i_flags; /* GIF_... */ |
feaa7bba | 311 | struct gfs2_glock *i_gl; /* Move into i_gh? */ |
b3b94faa | 312 | struct gfs2_holder i_iopen_gh; |
f42faf4f | 313 | struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
564e12b1 BP |
314 | struct gfs2_qadata *i_qadata; /* quota allocation data */ |
315 | struct gfs2_blkreserv *i_res; /* resource group block reservation */ | |
54335b1f | 316 | struct gfs2_rgrpd *i_rgd; |
ce276b06 | 317 | u64 i_goal; /* goal block for allocations */ |
b3b94faa | 318 | struct rw_semaphore i_rw_mutex; |
813e0c46 | 319 | struct list_head i_trunc_list; |
17d539f0 | 320 | __be64 *i_hash_cache; |
ad6203f2 | 321 | u32 i_entries; |
383f01fb | 322 | u32 i_diskflags; |
ecc30c79 | 323 | u8 i_height; |
9a004508 | 324 | u8 i_depth; |
b3b94faa DT |
325 | }; |
326 | ||
feaa7bba SW |
327 | /* |
328 | * Since i_inode is the first element of struct gfs2_inode, | |
329 | * this is effectively a cast. | |
330 | */ | |
320dd101 SW |
331 | static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
332 | { | |
333 | return container_of(inode, struct gfs2_inode, i_inode); | |
334 | } | |
335 | ||
bf36a713 | 336 | static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
feaa7bba SW |
337 | { |
338 | return inode->i_sb->s_fs_info; | |
339 | } | |
340 | ||
b3b94faa | 341 | struct gfs2_file { |
f55ab26a | 342 | struct mutex f_fl_mutex; |
b3b94faa | 343 | struct gfs2_holder f_fl_gh; |
b3b94faa DT |
344 | }; |
345 | ||
b3b94faa DT |
346 | struct gfs2_revoke_replay { |
347 | struct list_head rr_list; | |
cd915493 | 348 | u64 rr_blkno; |
b3b94faa DT |
349 | unsigned int rr_where; |
350 | }; | |
351 | ||
b3b94faa DT |
352 | enum { |
353 | QDF_USER = 0, | |
354 | QDF_CHANGE = 1, | |
355 | QDF_LOCKED = 2, | |
662e3a55 | 356 | QDF_REFRESH = 3, |
b3b94faa DT |
357 | }; |
358 | ||
359 | struct gfs2_quota_data { | |
360 | struct list_head qd_list; | |
0a7ab79c AD |
361 | struct list_head qd_reclaim; |
362 | ||
363 | atomic_t qd_count; | |
b3b94faa | 364 | |
cd915493 | 365 | u32 qd_id; |
b3b94faa DT |
366 | unsigned long qd_flags; /* QDF_... */ |
367 | ||
cd915493 SW |
368 | s64 qd_change; |
369 | s64 qd_change_sync; | |
b3b94faa DT |
370 | |
371 | unsigned int qd_slot; | |
372 | unsigned int qd_slot_count; | |
373 | ||
374 | struct buffer_head *qd_bh; | |
375 | struct gfs2_quota_change *qd_bh_qc; | |
376 | unsigned int qd_bh_count; | |
377 | ||
378 | struct gfs2_glock *qd_gl; | |
379 | struct gfs2_quota_lvb qd_qb; | |
380 | ||
cd915493 | 381 | u64 qd_sync_gen; |
b3b94faa | 382 | unsigned long qd_last_warn; |
b3b94faa DT |
383 | }; |
384 | ||
b3b94faa | 385 | struct gfs2_trans { |
d0dc80db | 386 | unsigned long tr_ip; |
b3b94faa DT |
387 | |
388 | unsigned int tr_blocks; | |
389 | unsigned int tr_revokes; | |
390 | unsigned int tr_reserved; | |
391 | ||
e317ffcb | 392 | struct gfs2_holder tr_t_gh; |
b3b94faa DT |
393 | |
394 | int tr_touched; | |
395 | ||
396 | unsigned int tr_num_buf; | |
397 | unsigned int tr_num_buf_new; | |
2332c443 | 398 | unsigned int tr_num_databuf_new; |
b3b94faa | 399 | unsigned int tr_num_buf_rm; |
2332c443 | 400 | unsigned int tr_num_databuf_rm; |
b3b94faa DT |
401 | struct list_head tr_list_buf; |
402 | ||
403 | unsigned int tr_num_revoke; | |
404 | unsigned int tr_num_revoke_rm; | |
405 | }; | |
406 | ||
407 | struct gfs2_ail { | |
408 | struct list_head ai_list; | |
409 | ||
410 | unsigned int ai_first; | |
411 | struct list_head ai_ail1_list; | |
412 | struct list_head ai_ail2_list; | |
b3b94faa DT |
413 | }; |
414 | ||
da6dd40d BP |
415 | struct gfs2_journal_extent { |
416 | struct list_head extent_list; | |
417 | ||
418 | unsigned int lblock; /* First logical block */ | |
419 | u64 dblock; /* First disk block */ | |
420 | u64 blocks; | |
421 | }; | |
422 | ||
b3b94faa DT |
423 | struct gfs2_jdesc { |
424 | struct list_head jd_list; | |
da6dd40d | 425 | struct list_head extent_list; |
6ecd7c2d | 426 | struct work_struct jd_work; |
7359a19c | 427 | struct inode *jd_inode; |
fe64d517 SW |
428 | unsigned long jd_flags; |
429 | #define JDF_RECOVERY 1 | |
b3b94faa | 430 | unsigned int jd_jid; |
b3b94faa DT |
431 | unsigned int jd_blocks; |
432 | }; | |
433 | ||
bb8d8a6f SW |
434 | struct gfs2_statfs_change_host { |
435 | s64 sc_total; | |
436 | s64 sc_free; | |
437 | s64 sc_dinodes; | |
438 | }; | |
439 | ||
b3b94faa DT |
440 | #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
441 | #define GFS2_QUOTA_OFF 0 | |
442 | #define GFS2_QUOTA_ACCOUNT 1 | |
443 | #define GFS2_QUOTA_ON 2 | |
444 | ||
445 | #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED | |
446 | #define GFS2_DATA_WRITEBACK 1 | |
447 | #define GFS2_DATA_ORDERED 2 | |
448 | ||
d34843d0 BP |
449 | #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
450 | #define GFS2_ERRORS_WITHDRAW 0 | |
451 | #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ | |
452 | #define GFS2_ERRORS_RO 2 /* place holder for future feature */ | |
453 | #define GFS2_ERRORS_PANIC 3 | |
454 | ||
b3b94faa | 455 | struct gfs2_args { |
37ec89e8 SW |
456 | char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
457 | char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ | |
458 | char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ | |
459 | unsigned int ar_spectator:1; /* Don't get a journal */ | |
37ec89e8 | 460 | unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
37ec89e8 | 461 | unsigned int ar_debug:1; /* Oops on errors */ |
37ec89e8 SW |
462 | unsigned int ar_posix_acl:1; /* Enable posix acls */ |
463 | unsigned int ar_quota:2; /* off/account/on */ | |
464 | unsigned int ar_suiddir:1; /* suiddir support */ | |
465 | unsigned int ar_data:2; /* ordered/writeback */ | |
466 | unsigned int ar_meta:1; /* mount metafs */ | |
f15ab561 | 467 | unsigned int ar_discard:1; /* discard requests */ |
d34843d0 | 468 | unsigned int ar_errors:2; /* errors=withdraw | panic */ |
f25934c5 | 469 | unsigned int ar_nobarrier:1; /* do not send barriers */ |
48c2b613 | 470 | int ar_commit; /* Commit interval */ |
3d3c10f2 BM |
471 | int ar_statfs_quantum; /* The fast statfs interval */ |
472 | int ar_quota_quantum; /* The quota interval */ | |
473 | int ar_statfs_percent; /* The % change to force sync */ | |
b3b94faa DT |
474 | }; |
475 | ||
476 | struct gfs2_tune { | |
477 | spinlock_t gt_spin; | |
478 | ||
b3b94faa | 479 | unsigned int gt_logd_secs; |
b3b94faa DT |
480 | |
481 | unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ | |
482 | unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ | |
483 | unsigned int gt_quota_scale_num; /* Numerator */ | |
484 | unsigned int gt_quota_scale_den; /* Denominator */ | |
b3b94faa | 485 | unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
b3b94faa | 486 | unsigned int gt_new_files_jdata; |
b3b94faa | 487 | unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
b3b94faa | 488 | unsigned int gt_complain_secs; |
b3b94faa DT |
489 | unsigned int gt_statfs_quantum; |
490 | unsigned int gt_statfs_slow; | |
491 | }; | |
492 | ||
b3b94faa DT |
493 | enum { |
494 | SDF_JOURNAL_CHECKED = 0, | |
495 | SDF_JOURNAL_LIVE = 1, | |
496 | SDF_SHUTDOWN = 2, | |
254db57f | 497 | SDF_NOBARRIERS = 3, |
fe64d517 | 498 | SDF_NORECOVERY = 4, |
913a71d2 | 499 | SDF_DEMOTE = 5, |
ba6e9364 | 500 | SDF_NOJOURNALID = 6, |
e8ca5cc5 | 501 | SDF_RORECOVERY = 7, /* read only recovery */ |
b3b94faa DT |
502 | }; |
503 | ||
b3b94faa DT |
504 | #define GFS2_FSNAME_LEN 256 |
505 | ||
bb8d8a6f SW |
506 | struct gfs2_inum_host { |
507 | u64 no_formal_ino; | |
508 | u64 no_addr; | |
509 | }; | |
510 | ||
511 | struct gfs2_sb_host { | |
512 | u32 sb_magic; | |
513 | u32 sb_type; | |
514 | u32 sb_format; | |
515 | ||
516 | u32 sb_fs_format; | |
517 | u32 sb_multihost_format; | |
518 | u32 sb_bsize; | |
519 | u32 sb_bsize_shift; | |
520 | ||
521 | struct gfs2_inum_host sb_master_dir; | |
522 | struct gfs2_inum_host sb_root_dir; | |
523 | ||
524 | char sb_lockproto[GFS2_LOCKNAME_LEN]; | |
525 | char sb_locktable[GFS2_LOCKNAME_LEN]; | |
526 | }; | |
527 | ||
f057f6cd SW |
528 | /* |
529 | * lm_mount() return values | |
530 | * | |
531 | * ls_jid - the journal ID this node should use | |
532 | * ls_first - this node is the first to mount the file system | |
533 | * ls_lockspace - lock module's context for this file system | |
534 | * ls_ops - lock module's functions | |
535 | */ | |
536 | ||
537 | struct lm_lockstruct { | |
feb47ca9 | 538 | int ls_jid; |
f057f6cd | 539 | unsigned int ls_first; |
f057f6cd SW |
540 | unsigned int ls_nodir; |
541 | const struct lm_lockops *ls_ops; | |
f057f6cd SW |
542 | dlm_lockspace_t *ls_dlm; |
543 | ||
e0c2a9aa DT |
544 | int ls_recover_jid_done; /* These two are deprecated, */ |
545 | int ls_recover_jid_status; /* used previously by gfs_controld */ | |
546 | ||
547 | struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ | |
548 | struct dlm_lksb ls_control_lksb; /* control_lock */ | |
549 | char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ | |
550 | struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ | |
551 | ||
552 | spinlock_t ls_recover_spin; /* protects following fields */ | |
553 | unsigned long ls_recover_flags; /* DFL_ */ | |
554 | uint32_t ls_recover_mount; /* gen in first recover_done cb */ | |
555 | uint32_t ls_recover_start; /* gen in last recover_done cb */ | |
556 | uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ | |
557 | uint32_t ls_recover_size; /* size of recover_submit, recover_result */ | |
558 | uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ | |
559 | uint32_t *ls_recover_result; /* result of last jid recovery */ | |
f057f6cd SW |
560 | }; |
561 | ||
b3b94faa DT |
562 | struct gfs2_sbd { |
563 | struct super_block *sd_vfs; | |
564 | struct kobject sd_kobj; | |
565 | unsigned long sd_flags; /* SDF_... */ | |
f50dfaf7 | 566 | struct gfs2_sb_host sd_sb; |
b3b94faa DT |
567 | |
568 | /* Constants computed on mount */ | |
569 | ||
cd915493 SW |
570 | u32 sd_fsb2bb; |
571 | u32 sd_fsb2bb_shift; | |
572 | u32 sd_diptrs; /* Number of pointers in a dinode */ | |
573 | u32 sd_inptrs; /* Number of pointers in a indirect block */ | |
574 | u32 sd_jbsize; /* Size of a journaled data block */ | |
575 | u32 sd_hash_bsize; /* sizeof(exhash block) */ | |
576 | u32 sd_hash_bsize_shift; | |
577 | u32 sd_hash_ptrs; /* Number of pointers in a hash block */ | |
578 | u32 sd_qc_per_block; | |
579 | u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ | |
580 | u32 sd_max_height; /* Max height of a file's metadata tree */ | |
ecc30c79 | 581 | u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
cd915493 | 582 | u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
ecc30c79 | 583 | u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
b3b94faa DT |
584 | |
585 | struct gfs2_args sd_args; /* Mount arguments */ | |
586 | struct gfs2_tune sd_tune; /* Filesystem tuning structure */ | |
587 | ||
588 | /* Lock Stuff */ | |
589 | ||
590 | struct lm_lockstruct sd_lockstruct; | |
b3b94faa DT |
591 | struct gfs2_holder sd_live_gh; |
592 | struct gfs2_glock *sd_rename_gl; | |
593 | struct gfs2_glock *sd_trans_gl; | |
e402746a SW |
594 | wait_queue_head_t sd_glock_wait; |
595 | atomic_t sd_glock_disposal; | |
3942ae53 | 596 | struct completion sd_locking_init; |
e0c2a9aa | 597 | struct delayed_work sd_control_work; |
b3b94faa DT |
598 | |
599 | /* Inode Stuff */ | |
600 | ||
9b8df98f SW |
601 | struct dentry *sd_master_dir; |
602 | struct dentry *sd_root_dir; | |
603 | ||
f42faf4f | 604 | struct inode *sd_jindex; |
f42faf4f | 605 | struct inode *sd_statfs_inode; |
f42faf4f | 606 | struct inode *sd_sc_inode; |
f42faf4f SW |
607 | struct inode *sd_qc_inode; |
608 | struct inode *sd_rindex; | |
609 | struct inode *sd_quota_inode; | |
b3b94faa | 610 | |
b3b94faa DT |
611 | /* StatFS stuff */ |
612 | ||
613 | spinlock_t sd_statfs_spin; | |
bd209cc0 AV |
614 | struct gfs2_statfs_change_host sd_statfs_master; |
615 | struct gfs2_statfs_change_host sd_statfs_local; | |
3d3c10f2 | 616 | int sd_statfs_force_sync; |
b3b94faa DT |
617 | |
618 | /* Resource group stuff */ | |
619 | ||
cf45b752 | 620 | int sd_rindex_uptodate; |
b3b94faa | 621 | spinlock_t sd_rindex_spin; |
f55ab26a | 622 | struct mutex sd_rindex_mutex; |
7c9ca621 | 623 | struct rb_root sd_rindex_tree; |
b3b94faa | 624 | unsigned int sd_rgrps; |
3921120e | 625 | unsigned int sd_max_rg_data; |
b3b94faa DT |
626 | |
627 | /* Journal index stuff */ | |
628 | ||
629 | struct list_head sd_jindex_list; | |
630 | spinlock_t sd_jindex_spin; | |
f55ab26a | 631 | struct mutex sd_jindex_mutex; |
b3b94faa | 632 | unsigned int sd_journals; |
b3b94faa DT |
633 | |
634 | struct gfs2_jdesc *sd_jdesc; | |
635 | struct gfs2_holder sd_journal_gh; | |
636 | struct gfs2_holder sd_jinode_gh; | |
637 | ||
b3b94faa | 638 | struct gfs2_holder sd_sc_gh; |
b3b94faa DT |
639 | struct gfs2_holder sd_qc_gh; |
640 | ||
641 | /* Daemon stuff */ | |
642 | ||
b3b94faa DT |
643 | struct task_struct *sd_logd_process; |
644 | struct task_struct *sd_quotad_process; | |
b3b94faa | 645 | |
b3b94faa DT |
646 | /* Quota stuff */ |
647 | ||
648 | struct list_head sd_quota_list; | |
649 | atomic_t sd_quota_count; | |
f55ab26a | 650 | struct mutex sd_quota_mutex; |
37b2c837 | 651 | wait_queue_head_t sd_quota_wait; |
813e0c46 SW |
652 | struct list_head sd_trunc_list; |
653 | spinlock_t sd_trunc_lock; | |
b3b94faa DT |
654 | |
655 | unsigned int sd_quota_slots; | |
656 | unsigned int sd_quota_chunks; | |
657 | unsigned char **sd_quota_bitmap; | |
658 | ||
cd915493 | 659 | u64 sd_quota_sync_gen; |
b3b94faa DT |
660 | |
661 | /* Log stuff */ | |
662 | ||
663 | spinlock_t sd_log_lock; | |
b3b94faa DT |
664 | |
665 | unsigned int sd_log_blks_reserved; | |
666 | unsigned int sd_log_commited_buf; | |
2332c443 | 667 | unsigned int sd_log_commited_databuf; |
2e95e3f6 | 668 | int sd_log_commited_revoke; |
b3b94faa | 669 | |
5e687eac | 670 | atomic_t sd_log_pinned; |
b3b94faa DT |
671 | unsigned int sd_log_num_buf; |
672 | unsigned int sd_log_num_revoke; | |
673 | unsigned int sd_log_num_rg; | |
674 | unsigned int sd_log_num_databuf; | |
f42faf4f | 675 | |
b3b94faa DT |
676 | struct list_head sd_log_le_buf; |
677 | struct list_head sd_log_le_revoke; | |
678 | struct list_head sd_log_le_rg; | |
679 | struct list_head sd_log_le_databuf; | |
d7b616e2 | 680 | struct list_head sd_log_le_ordered; |
b3b94faa | 681 | |
5e687eac BM |
682 | atomic_t sd_log_thresh1; |
683 | atomic_t sd_log_thresh2; | |
fd041f0b | 684 | atomic_t sd_log_blks_free; |
5e687eac BM |
685 | wait_queue_head_t sd_log_waitq; |
686 | wait_queue_head_t sd_logd_waitq; | |
b3b94faa | 687 | |
cd915493 | 688 | u64 sd_log_sequence; |
b3b94faa DT |
689 | unsigned int sd_log_head; |
690 | unsigned int sd_log_tail; | |
b3b94faa DT |
691 | int sd_log_idle; |
692 | ||
484adff8 | 693 | struct rw_semaphore sd_log_flush_lock; |
16615be1 SW |
694 | atomic_t sd_log_in_flight; |
695 | wait_queue_head_t sd_log_flush_wait; | |
b3b94faa DT |
696 | |
697 | unsigned int sd_log_flush_head; | |
cd915493 | 698 | u64 sd_log_flush_wrapped; |
b3b94faa | 699 | |
d6a079e8 | 700 | spinlock_t sd_ail_lock; |
b3b94faa DT |
701 | struct list_head sd_ail1_list; |
702 | struct list_head sd_ail2_list; | |
b3b94faa DT |
703 | |
704 | /* Replay stuff */ | |
705 | ||
706 | struct list_head sd_revoke_list; | |
707 | unsigned int sd_replay_tail; | |
708 | ||
709 | unsigned int sd_found_blocks; | |
710 | unsigned int sd_found_revokes; | |
711 | unsigned int sd_replayed_blocks; | |
712 | ||
713 | /* For quiescing the filesystem */ | |
714 | ||
715 | struct gfs2_holder sd_freeze_gh; | |
f55ab26a | 716 | struct mutex sd_freeze_lock; |
b3b94faa DT |
717 | unsigned int sd_freeze_count; |
718 | ||
b3b94faa DT |
719 | char sd_fsname[GFS2_FSNAME_LEN]; |
720 | char sd_table_name[GFS2_FSNAME_LEN]; | |
721 | char sd_proto_name[GFS2_FSNAME_LEN]; | |
722 | ||
723 | /* Debugging crud */ | |
724 | ||
725 | unsigned long sd_last_warning; | |
5f882096 RP |
726 | struct dentry *debugfs_dir; /* debugfs directory */ |
727 | struct dentry *debugfs_dentry_glocks; /* for debugfs */ | |
b3b94faa DT |
728 | }; |
729 | ||
730 | #endif /* __INCORE_DOT_H__ */ | |
731 |