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> |
a245769f SW |
22 | #include <linux/ktime.h> |
23 | #include <linux/percpu.h> | |
e66cf161 | 24 | #include <linux/lockref.h> |
f2f7ba52 | 25 | |
b3b94faa DT |
26 | #define DIO_WAIT 0x00000010 |
27 | #define DIO_METADATA 0x00000020 | |
b3b94faa DT |
28 | |
29 | struct gfs2_log_operations; | |
c0752aa7 | 30 | struct gfs2_bufdata; |
b3b94faa DT |
31 | struct gfs2_holder; |
32 | struct gfs2_glock; | |
b3b94faa | 33 | struct gfs2_quota_data; |
b3b94faa | 34 | struct gfs2_trans; |
b3b94faa | 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 { | |
d69a3c65 | 55 | void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); |
16ca9412 | 56 | void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); |
b3b94faa | 57 | void (*lo_before_scan) (struct gfs2_jdesc *jd, |
55167622 | 58 | struct gfs2_log_header_host *head, int pass); |
b3b94faa DT |
59 | int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, |
60 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
61 | int pass); | |
62 | void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); | |
b09e593d | 63 | const char *lo_name; |
b3b94faa DT |
64 | }; |
65 | ||
60a0b8f9 SW |
66 | #define GBF_FULL 1 |
67 | ||
b3b94faa DT |
68 | struct gfs2_bitmap { |
69 | struct buffer_head *bi_bh; | |
70 | char *bi_clone; | |
60a0b8f9 | 71 | unsigned long bi_flags; |
cd915493 SW |
72 | u32 bi_offset; |
73 | u32 bi_start; | |
74 | u32 bi_len; | |
7e230f57 | 75 | u32 bi_blocks; |
b3b94faa DT |
76 | }; |
77 | ||
78 | struct gfs2_rgrpd { | |
7c9ca621 | 79 | struct rb_node rd_node; /* Link with superblock */ |
b3b94faa | 80 | struct gfs2_glock *rd_gl; /* Glock for this rgrp */ |
bb8d8a6f SW |
81 | 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 */ | |
cfc8b549 | 86 | u32 rd_free; |
8e2e0047 | 87 | u32 rd_reserved; /* number of blocks reserved */ |
73f74948 SW |
88 | u32 rd_free_clone; |
89 | u32 rd_dinodes; | |
d8b71f73 | 90 | u64 rd_igeneration; |
b3b94faa | 91 | struct gfs2_bitmap *rd_bits; |
b3b94faa | 92 | struct gfs2_sbd *rd_sbd; |
90306c41 | 93 | struct gfs2_rgrp_lvb *rd_rgl; |
73f74948 | 94 | u32 rd_last_alloc; |
1ce97e56 | 95 | u32 rd_flags; |
5ea5050c | 96 | u32 rd_extfail_pt; /* extent failure point */ |
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 */ | |
8e2e0047 BP |
101 | spinlock_t rd_rsspin; /* protects reservation related vars */ |
102 | struct rb_root rd_rstree; /* multi-block reservation tree */ | |
b3b94faa DT |
103 | }; |
104 | ||
4a993fb1 SW |
105 | struct gfs2_rbm { |
106 | struct gfs2_rgrpd *rgd; | |
4a993fb1 | 107 | u32 offset; /* The offset is bitmap relative */ |
e579ed4f | 108 | int bii; /* Bitmap index */ |
4a993fb1 SW |
109 | }; |
110 | ||
e579ed4f BP |
111 | static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) |
112 | { | |
113 | return rbm->rgd->rd_bits + rbm->bii; | |
114 | } | |
115 | ||
4a993fb1 SW |
116 | static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) |
117 | { | |
e579ed4f BP |
118 | return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + |
119 | rbm->offset; | |
4a993fb1 SW |
120 | } |
121 | ||
5b924ae2 SW |
122 | static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, |
123 | const struct gfs2_rbm *rbm2) | |
124 | { | |
e579ed4f | 125 | return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && |
5b924ae2 SW |
126 | (rbm1->offset == rbm2->offset); |
127 | } | |
128 | ||
b3b94faa DT |
129 | enum gfs2_state_bits { |
130 | BH_Pinned = BH_PrivateStart, | |
f42faf4f | 131 | BH_Escaped = BH_PrivateStart + 1, |
64dd153c | 132 | BH_Zeronew = BH_PrivateStart + 2, |
b3b94faa DT |
133 | }; |
134 | ||
135 | BUFFER_FNS(Pinned, pinned) | |
136 | TAS_BUFFER_FNS(Pinned, pinned) | |
f42faf4f SW |
137 | BUFFER_FNS(Escaped, escaped) |
138 | TAS_BUFFER_FNS(Escaped, escaped) | |
64dd153c BM |
139 | BUFFER_FNS(Zeronew, zeronew) |
140 | TAS_BUFFER_FNS(Zeronew, zeronew) | |
b3b94faa DT |
141 | |
142 | struct gfs2_bufdata { | |
143 | struct buffer_head *bd_bh; | |
144 | struct gfs2_glock *bd_gl; | |
c50b91c4 | 145 | u64 bd_blkno; |
82e86087 | 146 | |
c0752aa7 BP |
147 | struct list_head bd_list; |
148 | const struct gfs2_log_operations *bd_ops; | |
b3b94faa | 149 | |
16ca9412 | 150 | struct gfs2_trans *bd_tr; |
b3b94faa DT |
151 | struct list_head bd_ail_st_list; |
152 | struct list_head bd_ail_gl_list; | |
153 | }; | |
154 | ||
f057f6cd SW |
155 | /* |
156 | * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a | |
157 | * prefix of lock_dlm_ gets awkward. | |
158 | */ | |
159 | ||
160 | #define GDLM_STRNAME_BYTES 25 | |
161 | #define GDLM_LVB_SIZE 32 | |
162 | ||
e0c2a9aa DT |
163 | /* |
164 | * ls_recover_flags: | |
165 | * | |
166 | * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been | |
167 | * held by failed nodes whose journals need recovery. Those locks should | |
168 | * only be used for journal recovery until the journal recovery is done. | |
169 | * This is set by the dlm recover_prep callback and cleared by the | |
170 | * gfs2_control thread when journal recovery is complete. To avoid | |
171 | * races between recover_prep setting and gfs2_control clearing, recover_spin | |
172 | * is held while changing this bit and reading/writing recover_block | |
173 | * and recover_start. | |
174 | * | |
175 | * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. | |
176 | * | |
177 | * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing | |
178 | * recovery of all journals before allowing other nodes to mount the fs. | |
179 | * This is cleared when FIRST_MOUNT_DONE is set. | |
180 | * | |
181 | * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished | |
182 | * recovery of all journals, and now allows other nodes to mount the fs. | |
183 | * | |
184 | * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared | |
185 | * BLOCK_LOCKS for the first time. The gfs2_control thread should now | |
186 | * control clearing BLOCK_LOCKS for further recoveries. | |
187 | * | |
188 | * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. | |
189 | * | |
190 | * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() | |
191 | * and recover_done(), i.e. set while recover_block == recover_start. | |
192 | */ | |
193 | ||
f057f6cd SW |
194 | enum { |
195 | DFL_BLOCK_LOCKS = 0, | |
e0c2a9aa DT |
196 | DFL_NO_DLM_OPS = 1, |
197 | DFL_FIRST_MOUNT = 2, | |
198 | DFL_FIRST_MOUNT_DONE = 3, | |
199 | DFL_MOUNT_DONE = 4, | |
200 | DFL_UNMOUNT = 5, | |
201 | DFL_DLM_RECOVERY = 6, | |
f057f6cd SW |
202 | }; |
203 | ||
204 | struct lm_lockname { | |
205 | u64 ln_number; | |
206 | unsigned int ln_type; | |
207 | }; | |
208 | ||
209 | #define lm_name_equal(name1, name2) \ | |
210 | (((name1)->ln_number == (name2)->ln_number) && \ | |
211 | ((name1)->ln_type == (name2)->ln_type)) | |
212 | ||
213 | ||
b3b94faa | 214 | struct gfs2_glock_operations { |
06dfc306 | 215 | void (*go_sync) (struct gfs2_glock *gl); |
6802e340 | 216 | int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); |
1a14d3a6 | 217 | void (*go_inval) (struct gfs2_glock *gl, int flags); |
97cc1025 | 218 | int (*go_demote_ok) (const struct gfs2_glock *gl); |
1a14d3a6 SW |
219 | int (*go_lock) (struct gfs2_holder *gh); |
220 | void (*go_unlock) (struct gfs2_holder *gh); | |
ac3beb6a | 221 | void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); |
81ffbf65 | 222 | void (*go_callback)(struct gfs2_glock *gl, bool remote); |
8fb4b536 | 223 | const int go_type; |
009d8518 SW |
224 | const unsigned long go_flags; |
225 | #define GLOF_ASPACE 1 | |
dba2d70c | 226 | #define GLOF_LVB 2 |
b3b94faa DT |
227 | }; |
228 | ||
a245769f SW |
229 | enum { |
230 | GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ | |
231 | GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ | |
232 | GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ | |
233 | GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ | |
234 | GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ | |
235 | GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ | |
236 | GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ | |
237 | GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ | |
238 | GFS2_NR_LKSTATS | |
239 | }; | |
240 | ||
241 | struct gfs2_lkstats { | |
242 | s64 stats[GFS2_NR_LKSTATS]; | |
243 | }; | |
244 | ||
b3b94faa | 245 | enum { |
b3b94faa | 246 | /* States */ |
6802e340 | 247 | HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ |
b3b94faa | 248 | HIF_FIRST = 7, |
fee852e3 | 249 | HIF_WAIT = 10, |
b3b94faa DT |
250 | }; |
251 | ||
252 | struct gfs2_holder { | |
253 | struct list_head gh_list; | |
254 | ||
255 | struct gfs2_glock *gh_gl; | |
b1e058da | 256 | struct pid *gh_owner_pid; |
b3b94faa | 257 | unsigned int gh_state; |
fe1bdedc | 258 | unsigned gh_flags; |
b3b94faa DT |
259 | |
260 | int gh_error; | |
6802e340 | 261 | unsigned long gh_iflags; /* HIF_... */ |
d0dc80db | 262 | unsigned long gh_ip; |
b3b94faa DT |
263 | }; |
264 | ||
8e2e0047 BP |
265 | /* Resource group multi-block reservation, in order of appearance: |
266 | ||
267 | Step 1. Function prepares to write, allocates a mb, sets the size hint. | |
268 | Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info | |
269 | Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use | |
270 | Step 4. Bits are assigned from the rgrp based on either the reservation | |
271 | or wherever it can. | |
272 | */ | |
273 | ||
274 | struct gfs2_blkreserv { | |
275 | /* components used during write (step 1): */ | |
276 | atomic_t rs_sizehint; /* hint of the write size */ | |
277 | ||
8e2e0047 BP |
278 | struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ |
279 | struct rb_node rs_node; /* link to other block reservations */ | |
9e733d39 | 280 | struct gfs2_rbm rs_rbm; /* Start of reservation */ |
8e2e0047 | 281 | u32 rs_free; /* how many blocks are still free */ |
9e733d39 | 282 | u64 rs_inum; /* Inode number for reservation */ |
8e2e0047 BP |
283 | |
284 | /* ancillary quota stuff */ | |
285 | struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; | |
286 | struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; | |
287 | unsigned int rs_qa_qd_num; | |
288 | }; | |
289 | ||
7b9cff46 SW |
290 | /* |
291 | * Allocation parameters | |
292 | * @target: The number of blocks we'd ideally like to allocate | |
293 | * @aflags: The flags (e.g. Orlov flag) | |
294 | * | |
295 | * The intent is to gradually expand this structure over time in | |
296 | * order to give more information, e.g. alignment, min extent size | |
297 | * to the allocation code. | |
298 | */ | |
299 | struct gfs2_alloc_parms { | |
300 | u32 target; | |
301 | u32 aflags; | |
302 | }; | |
303 | ||
b3b94faa | 304 | enum { |
6802e340 | 305 | GLF_LOCK = 1, |
6802e340 SW |
306 | GLF_DEMOTE = 3, |
307 | GLF_PENDING_DEMOTE = 4, | |
308 | GLF_DEMOTE_IN_PROGRESS = 5, | |
309 | GLF_DIRTY = 6, | |
310 | GLF_LFLUSH = 7, | |
311 | GLF_INVALIDATE_IN_PROGRESS = 8, | |
312 | GLF_REPLY_PENDING = 9, | |
f057f6cd SW |
313 | GLF_INITIAL = 10, |
314 | GLF_FROZEN = 11, | |
7b5e3d5f | 315 | GLF_QUEUED = 12, |
627c10b7 SW |
316 | GLF_LRU = 13, |
317 | GLF_OBJECT = 14, /* Used only for tracing */ | |
a245769f | 318 | GLF_BLOCKING = 15, |
b3b94faa DT |
319 | }; |
320 | ||
321 | struct gfs2_glock { | |
bc015cb8 | 322 | struct hlist_bl_node gl_list; |
a245769f | 323 | struct gfs2_sbd *gl_sbd; |
b3b94faa DT |
324 | unsigned long gl_flags; /* GLF_... */ |
325 | struct lm_lockname gl_name; | |
b3b94faa | 326 | |
e66cf161 SW |
327 | struct lockref gl_lockref; |
328 | #define gl_spin gl_lockref.lock | |
b3b94faa | 329 | |
47a25380 SW |
330 | /* State fields protected by gl_spin */ |
331 | unsigned int gl_state:2, /* Current state */ | |
332 | gl_target:2, /* Target state */ | |
333 | gl_demote_state:2, /* State requested by remote node */ | |
334 | gl_req:2, /* State in last dlm request */ | |
335 | gl_reply:8; /* Last reply from the dlm */ | |
336 | ||
37b2fa6a | 337 | unsigned int gl_hash; |
3b8249f6 | 338 | unsigned long gl_demote_time; /* time of first demote request */ |
7cf8dcd3 | 339 | long gl_hold_time; |
b3b94faa | 340 | struct list_head gl_holders; |
b3b94faa | 341 | |
8fb4b536 | 342 | const struct gfs2_glock_operations *gl_ops; |
a245769f SW |
343 | ktime_t gl_dstamp; |
344 | struct gfs2_lkstats gl_stats; | |
f057f6cd | 345 | struct dlm_lksb gl_lksb; |
c4f68a13 | 346 | unsigned long gl_tchange; |
b3b94faa DT |
347 | void *gl_object; |
348 | ||
97cc1025 | 349 | struct list_head gl_lru; |
b3b94faa DT |
350 | struct list_head gl_ail_list; |
351 | atomic_t gl_ail_count; | |
f42ab085 | 352 | atomic_t gl_revokes; |
c4f68a13 | 353 | struct delayed_work gl_work; |
7005c3e4 SW |
354 | union { |
355 | /* For inode and iopen glocks only */ | |
356 | struct work_struct gl_delete; | |
357 | /* For rgrp glocks only */ | |
358 | struct { | |
359 | loff_t start; | |
360 | loff_t end; | |
361 | } gl_vm; | |
362 | }; | |
bc015cb8 | 363 | struct rcu_head gl_rcu; |
b3b94faa DT |
364 | }; |
365 | ||
da755fdb SW |
366 | #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
367 | ||
b3b94faa | 368 | enum { |
bfded27b | 369 | GIF_INVALID = 0, |
b3b94faa | 370 | GIF_QD_LOCKED = 1, |
40ac218f | 371 | GIF_ALLOC_FAILED = 2, |
b3b94faa | 372 | GIF_SW_PAGED = 3, |
45138990 | 373 | GIF_ORDERED = 4, |
05978803 | 374 | GIF_FREE_VFS_INODE = 5, |
b3b94faa DT |
375 | }; |
376 | ||
377 | struct gfs2_inode { | |
320dd101 | 378 | struct inode i_inode; |
dbb7cae2 SW |
379 | u64 i_no_addr; |
380 | u64 i_no_formal_ino; | |
bcf0b5b3 | 381 | u64 i_generation; |
3767ac21 | 382 | u64 i_eattr; |
b3b94faa | 383 | unsigned long i_flags; /* GIF_... */ |
feaa7bba | 384 | struct gfs2_glock *i_gl; /* Move into i_gh? */ |
b3b94faa | 385 | struct gfs2_holder i_iopen_gh; |
f42faf4f | 386 | struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
8e2e0047 | 387 | struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ |
54335b1f | 388 | struct gfs2_rgrpd *i_rgd; |
ce276b06 | 389 | u64 i_goal; /* goal block for allocations */ |
b3b94faa | 390 | struct rw_semaphore i_rw_mutex; |
45138990 | 391 | struct list_head i_ordered; |
813e0c46 | 392 | struct list_head i_trunc_list; |
17d539f0 | 393 | __be64 *i_hash_cache; |
ad6203f2 | 394 | u32 i_entries; |
383f01fb | 395 | u32 i_diskflags; |
ecc30c79 | 396 | u8 i_height; |
9a004508 | 397 | u8 i_depth; |
b3b94faa DT |
398 | }; |
399 | ||
feaa7bba SW |
400 | /* |
401 | * Since i_inode is the first element of struct gfs2_inode, | |
402 | * this is effectively a cast. | |
403 | */ | |
320dd101 SW |
404 | static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
405 | { | |
406 | return container_of(inode, struct gfs2_inode, i_inode); | |
407 | } | |
408 | ||
bf36a713 | 409 | static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
feaa7bba SW |
410 | { |
411 | return inode->i_sb->s_fs_info; | |
412 | } | |
413 | ||
b3b94faa | 414 | struct gfs2_file { |
f55ab26a | 415 | struct mutex f_fl_mutex; |
b3b94faa | 416 | struct gfs2_holder f_fl_gh; |
b3b94faa DT |
417 | }; |
418 | ||
b3b94faa DT |
419 | struct gfs2_revoke_replay { |
420 | struct list_head rr_list; | |
cd915493 | 421 | u64 rr_blkno; |
b3b94faa DT |
422 | unsigned int rr_where; |
423 | }; | |
424 | ||
b3b94faa | 425 | enum { |
b3b94faa DT |
426 | QDF_CHANGE = 1, |
427 | QDF_LOCKED = 2, | |
662e3a55 | 428 | QDF_REFRESH = 3, |
b3b94faa DT |
429 | }; |
430 | ||
431 | struct gfs2_quota_data { | |
c754fbbb | 432 | struct hlist_bl_node qd_hlist; |
b3b94faa | 433 | struct list_head qd_list; |
2147dbfd | 434 | struct kqid qd_id; |
c754fbbb | 435 | struct gfs2_sbd *qd_sbd; |
9b9f039d | 436 | struct lockref qd_lockref; |
2147dbfd | 437 | struct list_head qd_lru; |
c754fbbb | 438 | unsigned qd_hash; |
b3b94faa | 439 | |
b3b94faa DT |
440 | unsigned long qd_flags; /* QDF_... */ |
441 | ||
cd915493 SW |
442 | s64 qd_change; |
443 | s64 qd_change_sync; | |
b3b94faa DT |
444 | |
445 | unsigned int qd_slot; | |
446 | unsigned int qd_slot_count; | |
447 | ||
448 | struct buffer_head *qd_bh; | |
449 | struct gfs2_quota_change *qd_bh_qc; | |
450 | unsigned int qd_bh_count; | |
451 | ||
452 | struct gfs2_glock *qd_gl; | |
453 | struct gfs2_quota_lvb qd_qb; | |
454 | ||
cd915493 | 455 | u64 qd_sync_gen; |
b3b94faa | 456 | unsigned long qd_last_warn; |
c754fbbb | 457 | struct rcu_head qd_rcu; |
b3b94faa DT |
458 | }; |
459 | ||
b3b94faa | 460 | struct gfs2_trans { |
d0dc80db | 461 | unsigned long tr_ip; |
b3b94faa DT |
462 | |
463 | unsigned int tr_blocks; | |
464 | unsigned int tr_revokes; | |
465 | unsigned int tr_reserved; | |
654a6d2f SW |
466 | unsigned int tr_touched:1; |
467 | unsigned int tr_attached:1; | |
b3b94faa | 468 | |
e317ffcb | 469 | struct gfs2_holder tr_t_gh; |
b3b94faa | 470 | |
b3b94faa | 471 | |
b3b94faa | 472 | unsigned int tr_num_buf_new; |
2332c443 | 473 | unsigned int tr_num_databuf_new; |
b3b94faa | 474 | unsigned int tr_num_buf_rm; |
2332c443 | 475 | unsigned int tr_num_databuf_rm; |
b3b94faa DT |
476 | unsigned int tr_num_revoke; |
477 | unsigned int tr_num_revoke_rm; | |
b3b94faa | 478 | |
16ca9412 | 479 | struct list_head tr_list; |
d69a3c65 SW |
480 | struct list_head tr_databuf; |
481 | struct list_head tr_buf; | |
b3b94faa | 482 | |
16ca9412 BM |
483 | unsigned int tr_first; |
484 | struct list_head tr_ail1_list; | |
485 | struct list_head tr_ail2_list; | |
b3b94faa DT |
486 | }; |
487 | ||
da6dd40d | 488 | struct gfs2_journal_extent { |
b50f227b | 489 | struct list_head list; |
da6dd40d BP |
490 | |
491 | unsigned int lblock; /* First logical block */ | |
492 | u64 dblock; /* First disk block */ | |
493 | u64 blocks; | |
494 | }; | |
495 | ||
b3b94faa DT |
496 | struct gfs2_jdesc { |
497 | struct list_head jd_list; | |
da6dd40d | 498 | struct list_head extent_list; |
b50f227b | 499 | unsigned int nr_extents; |
6ecd7c2d | 500 | struct work_struct jd_work; |
7359a19c | 501 | struct inode *jd_inode; |
fe64d517 SW |
502 | unsigned long jd_flags; |
503 | #define JDF_RECOVERY 1 | |
b3b94faa | 504 | unsigned int jd_jid; |
b3b94faa | 505 | unsigned int jd_blocks; |
376d3778 | 506 | int jd_recover_error; |
a17d758b BP |
507 | /* Replay stuff */ |
508 | ||
509 | unsigned int jd_found_blocks; | |
510 | unsigned int jd_found_revokes; | |
511 | unsigned int jd_replayed_blocks; | |
512 | ||
513 | struct list_head jd_revoke_list; | |
514 | unsigned int jd_replay_tail; | |
515 | ||
b3b94faa DT |
516 | }; |
517 | ||
bb8d8a6f SW |
518 | struct gfs2_statfs_change_host { |
519 | s64 sc_total; | |
520 | s64 sc_free; | |
521 | s64 sc_dinodes; | |
522 | }; | |
523 | ||
b3b94faa DT |
524 | #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
525 | #define GFS2_QUOTA_OFF 0 | |
526 | #define GFS2_QUOTA_ACCOUNT 1 | |
527 | #define GFS2_QUOTA_ON 2 | |
528 | ||
529 | #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED | |
530 | #define GFS2_DATA_WRITEBACK 1 | |
531 | #define GFS2_DATA_ORDERED 2 | |
532 | ||
d34843d0 BP |
533 | #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
534 | #define GFS2_ERRORS_WITHDRAW 0 | |
535 | #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ | |
536 | #define GFS2_ERRORS_RO 2 /* place holder for future feature */ | |
537 | #define GFS2_ERRORS_PANIC 3 | |
538 | ||
b3b94faa | 539 | struct gfs2_args { |
37ec89e8 SW |
540 | char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
541 | char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ | |
542 | char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ | |
543 | unsigned int ar_spectator:1; /* Don't get a journal */ | |
37ec89e8 | 544 | unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
37ec89e8 | 545 | unsigned int ar_debug:1; /* Oops on errors */ |
37ec89e8 SW |
546 | unsigned int ar_posix_acl:1; /* Enable posix acls */ |
547 | unsigned int ar_quota:2; /* off/account/on */ | |
548 | unsigned int ar_suiddir:1; /* suiddir support */ | |
549 | unsigned int ar_data:2; /* ordered/writeback */ | |
550 | unsigned int ar_meta:1; /* mount metafs */ | |
f15ab561 | 551 | unsigned int ar_discard:1; /* discard requests */ |
d34843d0 | 552 | unsigned int ar_errors:2; /* errors=withdraw | panic */ |
f25934c5 | 553 | unsigned int ar_nobarrier:1; /* do not send barriers */ |
90306c41 | 554 | unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ |
48c2b613 | 555 | int ar_commit; /* Commit interval */ |
3d3c10f2 BM |
556 | int ar_statfs_quantum; /* The fast statfs interval */ |
557 | int ar_quota_quantum; /* The quota interval */ | |
558 | int ar_statfs_percent; /* The % change to force sync */ | |
b3b94faa DT |
559 | }; |
560 | ||
561 | struct gfs2_tune { | |
562 | spinlock_t gt_spin; | |
563 | ||
b3b94faa | 564 | unsigned int gt_logd_secs; |
b3b94faa | 565 | |
b3b94faa DT |
566 | unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ |
567 | unsigned int gt_quota_scale_num; /* Numerator */ | |
568 | unsigned int gt_quota_scale_den; /* Denominator */ | |
b3b94faa | 569 | unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
b3b94faa | 570 | unsigned int gt_new_files_jdata; |
b3b94faa | 571 | unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
b3b94faa | 572 | unsigned int gt_complain_secs; |
b3b94faa DT |
573 | unsigned int gt_statfs_quantum; |
574 | unsigned int gt_statfs_slow; | |
575 | }; | |
576 | ||
b3b94faa DT |
577 | enum { |
578 | SDF_JOURNAL_CHECKED = 0, | |
579 | SDF_JOURNAL_LIVE = 1, | |
580 | SDF_SHUTDOWN = 2, | |
254db57f | 581 | SDF_NOBARRIERS = 3, |
fe64d517 | 582 | SDF_NORECOVERY = 4, |
913a71d2 | 583 | SDF_DEMOTE = 5, |
ba6e9364 | 584 | SDF_NOJOURNALID = 6, |
e8ca5cc5 | 585 | SDF_RORECOVERY = 7, /* read only recovery */ |
fb6791d1 | 586 | SDF_SKIP_DLM_UNLOCK = 8, |
b3b94faa DT |
587 | }; |
588 | ||
b3b94faa DT |
589 | #define GFS2_FSNAME_LEN 256 |
590 | ||
bb8d8a6f SW |
591 | struct gfs2_inum_host { |
592 | u64 no_formal_ino; | |
593 | u64 no_addr; | |
594 | }; | |
595 | ||
596 | struct gfs2_sb_host { | |
597 | u32 sb_magic; | |
598 | u32 sb_type; | |
599 | u32 sb_format; | |
600 | ||
601 | u32 sb_fs_format; | |
602 | u32 sb_multihost_format; | |
603 | u32 sb_bsize; | |
604 | u32 sb_bsize_shift; | |
605 | ||
606 | struct gfs2_inum_host sb_master_dir; | |
607 | struct gfs2_inum_host sb_root_dir; | |
608 | ||
609 | char sb_lockproto[GFS2_LOCKNAME_LEN]; | |
610 | char sb_locktable[GFS2_LOCKNAME_LEN]; | |
611 | }; | |
612 | ||
f057f6cd SW |
613 | /* |
614 | * lm_mount() return values | |
615 | * | |
616 | * ls_jid - the journal ID this node should use | |
617 | * ls_first - this node is the first to mount the file system | |
618 | * ls_lockspace - lock module's context for this file system | |
619 | * ls_ops - lock module's functions | |
620 | */ | |
621 | ||
622 | struct lm_lockstruct { | |
feb47ca9 | 623 | int ls_jid; |
f057f6cd | 624 | unsigned int ls_first; |
f057f6cd | 625 | const struct lm_lockops *ls_ops; |
f057f6cd SW |
626 | dlm_lockspace_t *ls_dlm; |
627 | ||
e0c2a9aa DT |
628 | int ls_recover_jid_done; /* These two are deprecated, */ |
629 | int ls_recover_jid_status; /* used previously by gfs_controld */ | |
630 | ||
631 | struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ | |
632 | struct dlm_lksb ls_control_lksb; /* control_lock */ | |
633 | char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ | |
634 | struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ | |
57c7310b | 635 | char *ls_lvb_bits; |
e0c2a9aa DT |
636 | |
637 | spinlock_t ls_recover_spin; /* protects following fields */ | |
638 | unsigned long ls_recover_flags; /* DFL_ */ | |
639 | uint32_t ls_recover_mount; /* gen in first recover_done cb */ | |
640 | uint32_t ls_recover_start; /* gen in last recover_done cb */ | |
641 | uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ | |
642 | uint32_t ls_recover_size; /* size of recover_submit, recover_result */ | |
643 | uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ | |
644 | uint32_t *ls_recover_result; /* result of last jid recovery */ | |
f057f6cd SW |
645 | }; |
646 | ||
a245769f SW |
647 | struct gfs2_pcpu_lkstats { |
648 | /* One struct for each glock type */ | |
649 | struct gfs2_lkstats lkstats[10]; | |
650 | }; | |
651 | ||
b3b94faa DT |
652 | struct gfs2_sbd { |
653 | struct super_block *sd_vfs; | |
a245769f | 654 | struct gfs2_pcpu_lkstats __percpu *sd_lkstats; |
b3b94faa DT |
655 | struct kobject sd_kobj; |
656 | unsigned long sd_flags; /* SDF_... */ | |
f50dfaf7 | 657 | struct gfs2_sb_host sd_sb; |
b3b94faa DT |
658 | |
659 | /* Constants computed on mount */ | |
660 | ||
cd915493 SW |
661 | u32 sd_fsb2bb; |
662 | u32 sd_fsb2bb_shift; | |
663 | u32 sd_diptrs; /* Number of pointers in a dinode */ | |
664 | u32 sd_inptrs; /* Number of pointers in a indirect block */ | |
665 | u32 sd_jbsize; /* Size of a journaled data block */ | |
666 | u32 sd_hash_bsize; /* sizeof(exhash block) */ | |
667 | u32 sd_hash_bsize_shift; | |
668 | u32 sd_hash_ptrs; /* Number of pointers in a hash block */ | |
669 | u32 sd_qc_per_block; | |
a68a0a35 | 670 | u32 sd_blocks_per_bitmap; |
cd915493 SW |
671 | u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ |
672 | u32 sd_max_height; /* Max height of a file's metadata tree */ | |
ecc30c79 | 673 | u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
cd915493 | 674 | u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
ecc30c79 | 675 | u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
b3b94faa DT |
676 | |
677 | struct gfs2_args sd_args; /* Mount arguments */ | |
678 | struct gfs2_tune sd_tune; /* Filesystem tuning structure */ | |
679 | ||
680 | /* Lock Stuff */ | |
681 | ||
682 | struct lm_lockstruct sd_lockstruct; | |
b3b94faa DT |
683 | struct gfs2_holder sd_live_gh; |
684 | struct gfs2_glock *sd_rename_gl; | |
685 | struct gfs2_glock *sd_trans_gl; | |
e402746a SW |
686 | wait_queue_head_t sd_glock_wait; |
687 | atomic_t sd_glock_disposal; | |
3942ae53 | 688 | struct completion sd_locking_init; |
fd95e81c | 689 | struct completion sd_wdack; |
e0c2a9aa | 690 | struct delayed_work sd_control_work; |
b3b94faa DT |
691 | |
692 | /* Inode Stuff */ | |
693 | ||
9b8df98f SW |
694 | struct dentry *sd_master_dir; |
695 | struct dentry *sd_root_dir; | |
696 | ||
f42faf4f | 697 | struct inode *sd_jindex; |
f42faf4f | 698 | struct inode *sd_statfs_inode; |
f42faf4f | 699 | struct inode *sd_sc_inode; |
f42faf4f SW |
700 | struct inode *sd_qc_inode; |
701 | struct inode *sd_rindex; | |
702 | struct inode *sd_quota_inode; | |
b3b94faa | 703 | |
b3b94faa DT |
704 | /* StatFS stuff */ |
705 | ||
706 | spinlock_t sd_statfs_spin; | |
bd209cc0 AV |
707 | struct gfs2_statfs_change_host sd_statfs_master; |
708 | struct gfs2_statfs_change_host sd_statfs_local; | |
3d3c10f2 | 709 | int sd_statfs_force_sync; |
b3b94faa DT |
710 | |
711 | /* Resource group stuff */ | |
712 | ||
cf45b752 | 713 | int sd_rindex_uptodate; |
b3b94faa | 714 | spinlock_t sd_rindex_spin; |
7c9ca621 | 715 | struct rb_root sd_rindex_tree; |
b3b94faa | 716 | unsigned int sd_rgrps; |
3921120e | 717 | unsigned int sd_max_rg_data; |
b3b94faa DT |
718 | |
719 | /* Journal index stuff */ | |
720 | ||
721 | struct list_head sd_jindex_list; | |
722 | spinlock_t sd_jindex_spin; | |
f55ab26a | 723 | struct mutex sd_jindex_mutex; |
b3b94faa | 724 | unsigned int sd_journals; |
b3b94faa DT |
725 | |
726 | struct gfs2_jdesc *sd_jdesc; | |
727 | struct gfs2_holder sd_journal_gh; | |
728 | struct gfs2_holder sd_jinode_gh; | |
729 | ||
b3b94faa | 730 | struct gfs2_holder sd_sc_gh; |
b3b94faa DT |
731 | struct gfs2_holder sd_qc_gh; |
732 | ||
733 | /* Daemon stuff */ | |
734 | ||
b3b94faa DT |
735 | struct task_struct *sd_logd_process; |
736 | struct task_struct *sd_quotad_process; | |
b3b94faa | 737 | |
b3b94faa DT |
738 | /* Quota stuff */ |
739 | ||
740 | struct list_head sd_quota_list; | |
741 | atomic_t sd_quota_count; | |
f55ab26a | 742 | struct mutex sd_quota_mutex; |
e46c772d | 743 | struct mutex sd_quota_sync_mutex; |
37b2c837 | 744 | wait_queue_head_t sd_quota_wait; |
813e0c46 SW |
745 | struct list_head sd_trunc_list; |
746 | spinlock_t sd_trunc_lock; | |
b3b94faa DT |
747 | |
748 | unsigned int sd_quota_slots; | |
ee2411a8 | 749 | unsigned long *sd_quota_bitmap; |
2d9e7230 | 750 | spinlock_t sd_bitmap_lock; |
b3b94faa | 751 | |
cd915493 | 752 | u64 sd_quota_sync_gen; |
b3b94faa DT |
753 | |
754 | /* Log stuff */ | |
755 | ||
70d4ee94 SW |
756 | struct address_space sd_aspace; |
757 | ||
b3b94faa | 758 | spinlock_t sd_log_lock; |
b3b94faa | 759 | |
16ca9412 | 760 | struct gfs2_trans *sd_log_tr; |
b3b94faa | 761 | unsigned int sd_log_blks_reserved; |
2e95e3f6 | 762 | int sd_log_commited_revoke; |
b3b94faa | 763 | |
5e687eac | 764 | atomic_t sd_log_pinned; |
b3b94faa | 765 | unsigned int sd_log_num_revoke; |
f42faf4f | 766 | |
b3b94faa | 767 | struct list_head sd_log_le_revoke; |
d7b616e2 | 768 | struct list_head sd_log_le_ordered; |
45138990 | 769 | spinlock_t sd_ordered_lock; |
b3b94faa | 770 | |
5e687eac BM |
771 | atomic_t sd_log_thresh1; |
772 | atomic_t sd_log_thresh2; | |
fd041f0b | 773 | atomic_t sd_log_blks_free; |
5e687eac BM |
774 | wait_queue_head_t sd_log_waitq; |
775 | wait_queue_head_t sd_logd_waitq; | |
b3b94faa | 776 | |
cd915493 | 777 | u64 sd_log_sequence; |
b3b94faa DT |
778 | unsigned int sd_log_head; |
779 | unsigned int sd_log_tail; | |
b3b94faa DT |
780 | int sd_log_idle; |
781 | ||
484adff8 | 782 | struct rw_semaphore sd_log_flush_lock; |
16615be1 | 783 | atomic_t sd_log_in_flight; |
e8c92ed7 | 784 | struct bio *sd_log_bio; |
16615be1 | 785 | wait_queue_head_t sd_log_flush_wait; |
e8c92ed7 | 786 | int sd_log_error; |
b3b94faa DT |
787 | |
788 | unsigned int sd_log_flush_head; | |
cd915493 | 789 | u64 sd_log_flush_wrapped; |
b3b94faa | 790 | |
d6a079e8 | 791 | spinlock_t sd_ail_lock; |
b3b94faa DT |
792 | struct list_head sd_ail1_list; |
793 | struct list_head sd_ail2_list; | |
b3b94faa | 794 | |
b3b94faa | 795 | /* For quiescing the filesystem */ |
b3b94faa | 796 | struct gfs2_holder sd_freeze_gh; |
b3b94faa | 797 | |
b3b94faa DT |
798 | char sd_fsname[GFS2_FSNAME_LEN]; |
799 | char sd_table_name[GFS2_FSNAME_LEN]; | |
800 | char sd_proto_name[GFS2_FSNAME_LEN]; | |
801 | ||
802 | /* Debugging crud */ | |
803 | ||
804 | unsigned long sd_last_warning; | |
5f882096 | 805 | struct dentry *debugfs_dir; /* debugfs directory */ |
a245769f SW |
806 | struct dentry *debugfs_dentry_glocks; |
807 | struct dentry *debugfs_dentry_glstats; | |
808 | struct dentry *debugfs_dentry_sbstats; | |
b3b94faa DT |
809 | }; |
810 | ||
a245769f SW |
811 | static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) |
812 | { | |
813 | gl->gl_stats.stats[which]++; | |
814 | } | |
815 | ||
816 | static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) | |
817 | { | |
818 | const struct gfs2_sbd *sdp = gl->gl_sbd; | |
819 | preempt_disable(); | |
820 | this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; | |
821 | preempt_enable(); | |
822 | } | |
823 | ||
b3b94faa DT |
824 | #endif /* __INCORE_DOT_H__ */ |
825 |