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> |
88ffbf3e | 25 | #include <linux/rhashtable.h> |
f2f7ba52 | 26 | |
b3b94faa DT |
27 | #define DIO_WAIT 0x00000010 |
28 | #define DIO_METADATA 0x00000020 | |
b3b94faa DT |
29 | |
30 | struct gfs2_log_operations; | |
c0752aa7 | 31 | struct gfs2_bufdata; |
b3b94faa DT |
32 | struct gfs2_holder; |
33 | struct gfs2_glock; | |
b3b94faa | 34 | struct gfs2_quota_data; |
b3b94faa | 35 | struct gfs2_trans; |
b3b94faa | 36 | struct gfs2_jdesc; |
b3b94faa | 37 | struct gfs2_sbd; |
f057f6cd | 38 | struct lm_lockops; |
b3b94faa DT |
39 | |
40 | typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); | |
41 | ||
bb8d8a6f SW |
42 | struct gfs2_log_header_host { |
43 | u64 lh_sequence; /* Sequence number of this transaction */ | |
44 | u32 lh_flags; /* GFS2_LOG_HEAD_... */ | |
45 | u32 lh_tail; /* Block number of log tail */ | |
46 | u32 lh_blkno; | |
47 | u32 lh_hash; | |
48 | }; | |
49 | ||
b3b94faa DT |
50 | /* |
51 | * Structure of operations that are associated with each | |
52 | * type of element in the log. | |
53 | */ | |
54 | ||
55 | struct gfs2_log_operations { | |
d69a3c65 | 56 | void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); |
16ca9412 | 57 | void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); |
b3b94faa | 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 | ||
60a0b8f9 SW |
67 | #define GBF_FULL 1 |
68 | ||
b3b94faa DT |
69 | struct gfs2_bitmap { |
70 | struct buffer_head *bi_bh; | |
71 | char *bi_clone; | |
60a0b8f9 | 72 | unsigned long bi_flags; |
cd915493 SW |
73 | u32 bi_offset; |
74 | u32 bi_start; | |
75 | u32 bi_len; | |
7e230f57 | 76 | u32 bi_blocks; |
b3b94faa DT |
77 | }; |
78 | ||
79 | struct gfs2_rgrpd { | |
7c9ca621 | 80 | struct rb_node rd_node; /* Link with superblock */ |
b3b94faa | 81 | struct gfs2_glock *rd_gl; /* Glock for this rgrp */ |
bb8d8a6f SW |
82 | u64 rd_addr; /* grp block disk address */ |
83 | u64 rd_data0; /* first data location */ | |
84 | u32 rd_length; /* length of rgrp header in fs blocks */ | |
85 | u32 rd_data; /* num of data blocks in rgrp */ | |
86 | u32 rd_bitbytes; /* number of bytes in data bitmaps */ | |
cfc8b549 | 87 | u32 rd_free; |
8e2e0047 | 88 | u32 rd_reserved; /* number of blocks reserved */ |
73f74948 SW |
89 | u32 rd_free_clone; |
90 | u32 rd_dinodes; | |
d8b71f73 | 91 | u64 rd_igeneration; |
b3b94faa | 92 | struct gfs2_bitmap *rd_bits; |
b3b94faa | 93 | struct gfs2_sbd *rd_sbd; |
90306c41 | 94 | struct gfs2_rgrp_lvb *rd_rgl; |
73f74948 | 95 | u32 rd_last_alloc; |
1ce97e56 | 96 | u32 rd_flags; |
5ea5050c | 97 | u32 rd_extfail_pt; /* extent failure point */ |
09010978 SW |
98 | #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ |
99 | #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ | |
100 | #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ | |
0e27c18c | 101 | #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ |
09010978 | 102 | #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ |
8e2e0047 BP |
103 | spinlock_t rd_rsspin; /* protects reservation related vars */ |
104 | struct rb_root rd_rstree; /* multi-block reservation tree */ | |
b3b94faa DT |
105 | }; |
106 | ||
4a993fb1 SW |
107 | struct gfs2_rbm { |
108 | struct gfs2_rgrpd *rgd; | |
4a993fb1 | 109 | u32 offset; /* The offset is bitmap relative */ |
e579ed4f | 110 | int bii; /* Bitmap index */ |
4a993fb1 SW |
111 | }; |
112 | ||
e579ed4f BP |
113 | static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) |
114 | { | |
115 | return rbm->rgd->rd_bits + rbm->bii; | |
116 | } | |
117 | ||
4a993fb1 SW |
118 | static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) |
119 | { | |
e579ed4f BP |
120 | return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + |
121 | rbm->offset; | |
4a993fb1 SW |
122 | } |
123 | ||
5b924ae2 SW |
124 | static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, |
125 | const struct gfs2_rbm *rbm2) | |
126 | { | |
e579ed4f | 127 | return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && |
5b924ae2 SW |
128 | (rbm1->offset == rbm2->offset); |
129 | } | |
130 | ||
b3b94faa DT |
131 | enum gfs2_state_bits { |
132 | BH_Pinned = BH_PrivateStart, | |
f42faf4f | 133 | BH_Escaped = BH_PrivateStart + 1, |
64dd153c | 134 | BH_Zeronew = BH_PrivateStart + 2, |
b3b94faa DT |
135 | }; |
136 | ||
137 | BUFFER_FNS(Pinned, pinned) | |
138 | TAS_BUFFER_FNS(Pinned, pinned) | |
f42faf4f SW |
139 | BUFFER_FNS(Escaped, escaped) |
140 | TAS_BUFFER_FNS(Escaped, escaped) | |
64dd153c BM |
141 | BUFFER_FNS(Zeronew, zeronew) |
142 | TAS_BUFFER_FNS(Zeronew, zeronew) | |
b3b94faa DT |
143 | |
144 | struct gfs2_bufdata { | |
145 | struct buffer_head *bd_bh; | |
146 | struct gfs2_glock *bd_gl; | |
c50b91c4 | 147 | u64 bd_blkno; |
82e86087 | 148 | |
c0752aa7 BP |
149 | struct list_head bd_list; |
150 | const struct gfs2_log_operations *bd_ops; | |
b3b94faa | 151 | |
16ca9412 | 152 | struct gfs2_trans *bd_tr; |
b3b94faa DT |
153 | struct list_head bd_ail_st_list; |
154 | struct list_head bd_ail_gl_list; | |
155 | }; | |
156 | ||
f057f6cd SW |
157 | /* |
158 | * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a | |
159 | * prefix of lock_dlm_ gets awkward. | |
160 | */ | |
161 | ||
162 | #define GDLM_STRNAME_BYTES 25 | |
163 | #define GDLM_LVB_SIZE 32 | |
164 | ||
e0c2a9aa DT |
165 | /* |
166 | * ls_recover_flags: | |
167 | * | |
168 | * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been | |
169 | * held by failed nodes whose journals need recovery. Those locks should | |
170 | * only be used for journal recovery until the journal recovery is done. | |
171 | * This is set by the dlm recover_prep callback and cleared by the | |
172 | * gfs2_control thread when journal recovery is complete. To avoid | |
173 | * races between recover_prep setting and gfs2_control clearing, recover_spin | |
174 | * is held while changing this bit and reading/writing recover_block | |
175 | * and recover_start. | |
176 | * | |
177 | * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. | |
178 | * | |
179 | * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing | |
180 | * recovery of all journals before allowing other nodes to mount the fs. | |
181 | * This is cleared when FIRST_MOUNT_DONE is set. | |
182 | * | |
183 | * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished | |
184 | * recovery of all journals, and now allows other nodes to mount the fs. | |
185 | * | |
186 | * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared | |
187 | * BLOCK_LOCKS for the first time. The gfs2_control thread should now | |
188 | * control clearing BLOCK_LOCKS for further recoveries. | |
189 | * | |
190 | * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. | |
191 | * | |
192 | * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() | |
193 | * and recover_done(), i.e. set while recover_block == recover_start. | |
194 | */ | |
195 | ||
f057f6cd SW |
196 | enum { |
197 | DFL_BLOCK_LOCKS = 0, | |
e0c2a9aa DT |
198 | DFL_NO_DLM_OPS = 1, |
199 | DFL_FIRST_MOUNT = 2, | |
200 | DFL_FIRST_MOUNT_DONE = 3, | |
201 | DFL_MOUNT_DONE = 4, | |
202 | DFL_UNMOUNT = 5, | |
203 | DFL_DLM_RECOVERY = 6, | |
f057f6cd SW |
204 | }; |
205 | ||
206 | struct lm_lockname { | |
15562c43 | 207 | struct gfs2_sbd *ln_sbd; |
f057f6cd SW |
208 | u64 ln_number; |
209 | unsigned int ln_type; | |
210 | }; | |
211 | ||
212 | #define lm_name_equal(name1, name2) \ | |
15562c43 BP |
213 | (((name1)->ln_number == (name2)->ln_number) && \ |
214 | ((name1)->ln_type == (name2)->ln_type) && \ | |
215 | ((name1)->ln_sbd == (name2)->ln_sbd)) | |
f057f6cd SW |
216 | |
217 | ||
b3b94faa | 218 | struct gfs2_glock_operations { |
06dfc306 | 219 | void (*go_sync) (struct gfs2_glock *gl); |
6802e340 | 220 | int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); |
1a14d3a6 | 221 | void (*go_inval) (struct gfs2_glock *gl, int flags); |
97cc1025 | 222 | int (*go_demote_ok) (const struct gfs2_glock *gl); |
1a14d3a6 SW |
223 | int (*go_lock) (struct gfs2_holder *gh); |
224 | void (*go_unlock) (struct gfs2_holder *gh); | |
ac3beb6a | 225 | void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); |
81ffbf65 | 226 | void (*go_callback)(struct gfs2_glock *gl, bool remote); |
8fb4b536 | 227 | const int go_type; |
009d8518 SW |
228 | const unsigned long go_flags; |
229 | #define GLOF_ASPACE 1 | |
dba2d70c | 230 | #define GLOF_LVB 2 |
e7ccaf5f | 231 | #define GLOF_LRU 4 |
b3b94faa DT |
232 | }; |
233 | ||
a245769f SW |
234 | enum { |
235 | GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ | |
236 | GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ | |
237 | GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ | |
238 | GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ | |
239 | GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ | |
240 | GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ | |
241 | GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ | |
242 | GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ | |
243 | GFS2_NR_LKSTATS | |
244 | }; | |
245 | ||
246 | struct gfs2_lkstats { | |
4d207133 | 247 | u64 stats[GFS2_NR_LKSTATS]; |
a245769f SW |
248 | }; |
249 | ||
b3b94faa | 250 | enum { |
b3b94faa | 251 | /* States */ |
6802e340 | 252 | HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ |
b3b94faa | 253 | HIF_FIRST = 7, |
fee852e3 | 254 | HIF_WAIT = 10, |
b3b94faa DT |
255 | }; |
256 | ||
257 | struct gfs2_holder { | |
258 | struct list_head gh_list; | |
259 | ||
260 | struct gfs2_glock *gh_gl; | |
b1e058da | 261 | struct pid *gh_owner_pid; |
b58bf407 BP |
262 | u16 gh_flags; |
263 | u16 gh_state; | |
b3b94faa DT |
264 | |
265 | int gh_error; | |
6802e340 | 266 | unsigned long gh_iflags; /* HIF_... */ |
d0dc80db | 267 | unsigned long gh_ip; |
b3b94faa DT |
268 | }; |
269 | ||
a937cca2 JK |
270 | /* Number of quota types we support */ |
271 | #define GFS2_MAXQUOTAS 2 | |
272 | ||
b54e9a0b BP |
273 | struct gfs2_qadata { /* quota allocation data */ |
274 | /* Quota stuff */ | |
275 | struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS]; | |
276 | struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS]; | |
277 | unsigned int qa_qd_num; | |
278 | }; | |
279 | ||
8e2e0047 BP |
280 | /* Resource group multi-block reservation, in order of appearance: |
281 | ||
282 | Step 1. Function prepares to write, allocates a mb, sets the size hint. | |
283 | Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info | |
284 | Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use | |
285 | Step 4. Bits are assigned from the rgrp based on either the reservation | |
286 | or wherever it can. | |
287 | */ | |
288 | ||
289 | struct gfs2_blkreserv { | |
290 | /* components used during write (step 1): */ | |
291 | atomic_t rs_sizehint; /* hint of the write size */ | |
292 | ||
8e2e0047 BP |
293 | struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ |
294 | struct rb_node rs_node; /* link to other block reservations */ | |
9e733d39 | 295 | struct gfs2_rbm rs_rbm; /* Start of reservation */ |
8e2e0047 | 296 | u32 rs_free; /* how many blocks are still free */ |
9e733d39 | 297 | u64 rs_inum; /* Inode number for reservation */ |
8e2e0047 BP |
298 | }; |
299 | ||
7b9cff46 SW |
300 | /* |
301 | * Allocation parameters | |
302 | * @target: The number of blocks we'd ideally like to allocate | |
303 | * @aflags: The flags (e.g. Orlov flag) | |
304 | * | |
305 | * The intent is to gradually expand this structure over time in | |
306 | * order to give more information, e.g. alignment, min extent size | |
307 | * to the allocation code. | |
308 | */ | |
309 | struct gfs2_alloc_parms { | |
b8fbf471 | 310 | u64 target; |
25435e5e | 311 | u32 min_target; |
7b9cff46 | 312 | u32 aflags; |
25435e5e | 313 | u64 allowed; |
7b9cff46 SW |
314 | }; |
315 | ||
b3b94faa | 316 | enum { |
6802e340 | 317 | GLF_LOCK = 1, |
6802e340 SW |
318 | GLF_DEMOTE = 3, |
319 | GLF_PENDING_DEMOTE = 4, | |
320 | GLF_DEMOTE_IN_PROGRESS = 5, | |
321 | GLF_DIRTY = 6, | |
322 | GLF_LFLUSH = 7, | |
323 | GLF_INVALIDATE_IN_PROGRESS = 8, | |
324 | GLF_REPLY_PENDING = 9, | |
f057f6cd SW |
325 | GLF_INITIAL = 10, |
326 | GLF_FROZEN = 11, | |
7b5e3d5f | 327 | GLF_QUEUED = 12, |
627c10b7 SW |
328 | GLF_LRU = 13, |
329 | GLF_OBJECT = 14, /* Used only for tracing */ | |
a245769f | 330 | GLF_BLOCKING = 15, |
a4923865 | 331 | GLF_INODE_CREATING = 16, /* Inode creation occurring */ |
b3b94faa DT |
332 | }; |
333 | ||
334 | struct gfs2_glock { | |
bc015cb8 | 335 | struct hlist_bl_node gl_list; |
b3b94faa DT |
336 | unsigned long gl_flags; /* GLF_... */ |
337 | struct lm_lockname gl_name; | |
b3b94faa | 338 | |
e66cf161 | 339 | struct lockref gl_lockref; |
b3b94faa | 340 | |
f3dd1649 | 341 | /* State fields protected by gl_lockref.lock */ |
47a25380 SW |
342 | unsigned int gl_state:2, /* Current state */ |
343 | gl_target:2, /* Target state */ | |
344 | gl_demote_state:2, /* State requested by remote node */ | |
345 | gl_req:2, /* State in last dlm request */ | |
346 | gl_reply:8; /* Last reply from the dlm */ | |
347 | ||
3b8249f6 | 348 | unsigned long gl_demote_time; /* time of first demote request */ |
7cf8dcd3 | 349 | long gl_hold_time; |
b3b94faa | 350 | struct list_head gl_holders; |
b3b94faa | 351 | |
8fb4b536 | 352 | const struct gfs2_glock_operations *gl_ops; |
a245769f SW |
353 | ktime_t gl_dstamp; |
354 | struct gfs2_lkstats gl_stats; | |
f057f6cd | 355 | struct dlm_lksb gl_lksb; |
c4f68a13 | 356 | unsigned long gl_tchange; |
b3b94faa DT |
357 | void *gl_object; |
358 | ||
97cc1025 | 359 | struct list_head gl_lru; |
b3b94faa DT |
360 | struct list_head gl_ail_list; |
361 | atomic_t gl_ail_count; | |
f42ab085 | 362 | atomic_t gl_revokes; |
c4f68a13 | 363 | struct delayed_work gl_work; |
7005c3e4 SW |
364 | union { |
365 | /* For inode and iopen glocks only */ | |
366 | struct work_struct gl_delete; | |
367 | /* For rgrp glocks only */ | |
368 | struct { | |
369 | loff_t start; | |
370 | loff_t end; | |
371 | } gl_vm; | |
372 | }; | |
88ffbf3e | 373 | struct rhash_head gl_node; |
b3b94faa DT |
374 | }; |
375 | ||
da755fdb SW |
376 | #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
377 | ||
b3b94faa | 378 | enum { |
bfded27b | 379 | GIF_INVALID = 0, |
b3b94faa | 380 | GIF_QD_LOCKED = 1, |
40ac218f | 381 | GIF_ALLOC_FAILED = 2, |
b3b94faa | 382 | GIF_SW_PAGED = 3, |
45138990 | 383 | GIF_ORDERED = 4, |
05978803 | 384 | GIF_FREE_VFS_INODE = 5, |
b3b94faa DT |
385 | }; |
386 | ||
387 | struct gfs2_inode { | |
320dd101 | 388 | struct inode i_inode; |
dbb7cae2 SW |
389 | u64 i_no_addr; |
390 | u64 i_no_formal_ino; | |
bcf0b5b3 | 391 | u64 i_generation; |
3767ac21 | 392 | u64 i_eattr; |
b3b94faa | 393 | unsigned long i_flags; /* GIF_... */ |
feaa7bba | 394 | struct gfs2_glock *i_gl; /* Move into i_gh? */ |
b3b94faa | 395 | struct gfs2_holder i_iopen_gh; |
f42faf4f | 396 | struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
b54e9a0b | 397 | struct gfs2_qadata *i_qadata; /* quota allocation data */ |
a097dc7e | 398 | struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */ |
54335b1f | 399 | struct gfs2_rgrpd *i_rgd; |
ce276b06 | 400 | u64 i_goal; /* goal block for allocations */ |
b3b94faa | 401 | struct rw_semaphore i_rw_mutex; |
45138990 | 402 | struct list_head i_ordered; |
813e0c46 | 403 | struct list_head i_trunc_list; |
17d539f0 | 404 | __be64 *i_hash_cache; |
ad6203f2 | 405 | u32 i_entries; |
383f01fb | 406 | u32 i_diskflags; |
ecc30c79 | 407 | u8 i_height; |
9a004508 | 408 | u8 i_depth; |
c8d57703 | 409 | u16 i_rahead; |
b3b94faa DT |
410 | }; |
411 | ||
feaa7bba SW |
412 | /* |
413 | * Since i_inode is the first element of struct gfs2_inode, | |
414 | * this is effectively a cast. | |
415 | */ | |
320dd101 SW |
416 | static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
417 | { | |
418 | return container_of(inode, struct gfs2_inode, i_inode); | |
419 | } | |
420 | ||
bf36a713 | 421 | static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
feaa7bba SW |
422 | { |
423 | return inode->i_sb->s_fs_info; | |
424 | } | |
425 | ||
b3b94faa | 426 | struct gfs2_file { |
f55ab26a | 427 | struct mutex f_fl_mutex; |
b3b94faa | 428 | struct gfs2_holder f_fl_gh; |
b3b94faa DT |
429 | }; |
430 | ||
b3b94faa DT |
431 | struct gfs2_revoke_replay { |
432 | struct list_head rr_list; | |
cd915493 | 433 | u64 rr_blkno; |
b3b94faa DT |
434 | unsigned int rr_where; |
435 | }; | |
436 | ||
b3b94faa | 437 | enum { |
b3b94faa DT |
438 | QDF_CHANGE = 1, |
439 | QDF_LOCKED = 2, | |
662e3a55 | 440 | QDF_REFRESH = 3, |
9cde2898 | 441 | QDF_QMSG_QUIET = 4, |
b3b94faa DT |
442 | }; |
443 | ||
444 | struct gfs2_quota_data { | |
c754fbbb | 445 | struct hlist_bl_node qd_hlist; |
b3b94faa | 446 | struct list_head qd_list; |
2147dbfd | 447 | struct kqid qd_id; |
c754fbbb | 448 | struct gfs2_sbd *qd_sbd; |
9b9f039d | 449 | struct lockref qd_lockref; |
2147dbfd | 450 | struct list_head qd_lru; |
c754fbbb | 451 | unsigned qd_hash; |
b3b94faa | 452 | |
b3b94faa DT |
453 | unsigned long qd_flags; /* QDF_... */ |
454 | ||
cd915493 SW |
455 | s64 qd_change; |
456 | s64 qd_change_sync; | |
b3b94faa DT |
457 | |
458 | unsigned int qd_slot; | |
459 | unsigned int qd_slot_count; | |
460 | ||
461 | struct buffer_head *qd_bh; | |
462 | struct gfs2_quota_change *qd_bh_qc; | |
463 | unsigned int qd_bh_count; | |
464 | ||
465 | struct gfs2_glock *qd_gl; | |
466 | struct gfs2_quota_lvb qd_qb; | |
467 | ||
cd915493 | 468 | u64 qd_sync_gen; |
b3b94faa | 469 | unsigned long qd_last_warn; |
c754fbbb | 470 | struct rcu_head qd_rcu; |
b3b94faa DT |
471 | }; |
472 | ||
b3b94faa | 473 | struct gfs2_trans { |
d0dc80db | 474 | unsigned long tr_ip; |
b3b94faa DT |
475 | |
476 | unsigned int tr_blocks; | |
477 | unsigned int tr_revokes; | |
478 | unsigned int tr_reserved; | |
654a6d2f SW |
479 | unsigned int tr_touched:1; |
480 | unsigned int tr_attached:1; | |
24972557 | 481 | unsigned int tr_alloced:1; |
b3b94faa | 482 | |
b3b94faa | 483 | unsigned int tr_num_buf_new; |
2332c443 | 484 | unsigned int tr_num_databuf_new; |
b3b94faa | 485 | unsigned int tr_num_buf_rm; |
2332c443 | 486 | unsigned int tr_num_databuf_rm; |
b3b94faa DT |
487 | unsigned int tr_num_revoke; |
488 | unsigned int tr_num_revoke_rm; | |
b3b94faa | 489 | |
16ca9412 | 490 | struct list_head tr_list; |
d69a3c65 SW |
491 | struct list_head tr_databuf; |
492 | struct list_head tr_buf; | |
b3b94faa | 493 | |
16ca9412 BM |
494 | unsigned int tr_first; |
495 | struct list_head tr_ail1_list; | |
496 | struct list_head tr_ail2_list; | |
b3b94faa DT |
497 | }; |
498 | ||
da6dd40d | 499 | struct gfs2_journal_extent { |
b50f227b | 500 | struct list_head list; |
da6dd40d BP |
501 | |
502 | unsigned int lblock; /* First logical block */ | |
503 | u64 dblock; /* First disk block */ | |
504 | u64 blocks; | |
505 | }; | |
506 | ||
b3b94faa DT |
507 | struct gfs2_jdesc { |
508 | struct list_head jd_list; | |
da6dd40d | 509 | struct list_head extent_list; |
b50f227b | 510 | unsigned int nr_extents; |
6ecd7c2d | 511 | struct work_struct jd_work; |
7359a19c | 512 | struct inode *jd_inode; |
fe64d517 SW |
513 | unsigned long jd_flags; |
514 | #define JDF_RECOVERY 1 | |
b3b94faa | 515 | unsigned int jd_jid; |
b3b94faa | 516 | unsigned int jd_blocks; |
376d3778 | 517 | int jd_recover_error; |
a17d758b BP |
518 | /* Replay stuff */ |
519 | ||
520 | unsigned int jd_found_blocks; | |
521 | unsigned int jd_found_revokes; | |
522 | unsigned int jd_replayed_blocks; | |
523 | ||
524 | struct list_head jd_revoke_list; | |
525 | unsigned int jd_replay_tail; | |
526 | ||
b3b94faa DT |
527 | }; |
528 | ||
bb8d8a6f SW |
529 | struct gfs2_statfs_change_host { |
530 | s64 sc_total; | |
531 | s64 sc_free; | |
532 | s64 sc_dinodes; | |
533 | }; | |
534 | ||
b3b94faa DT |
535 | #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
536 | #define GFS2_QUOTA_OFF 0 | |
537 | #define GFS2_QUOTA_ACCOUNT 1 | |
538 | #define GFS2_QUOTA_ON 2 | |
539 | ||
540 | #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED | |
541 | #define GFS2_DATA_WRITEBACK 1 | |
542 | #define GFS2_DATA_ORDERED 2 | |
543 | ||
d34843d0 BP |
544 | #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
545 | #define GFS2_ERRORS_WITHDRAW 0 | |
546 | #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ | |
547 | #define GFS2_ERRORS_RO 2 /* place holder for future feature */ | |
548 | #define GFS2_ERRORS_PANIC 3 | |
549 | ||
b3b94faa | 550 | struct gfs2_args { |
37ec89e8 SW |
551 | char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
552 | char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ | |
553 | char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ | |
554 | unsigned int ar_spectator:1; /* Don't get a journal */ | |
37ec89e8 | 555 | unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
37ec89e8 | 556 | unsigned int ar_debug:1; /* Oops on errors */ |
37ec89e8 SW |
557 | unsigned int ar_posix_acl:1; /* Enable posix acls */ |
558 | unsigned int ar_quota:2; /* off/account/on */ | |
559 | unsigned int ar_suiddir:1; /* suiddir support */ | |
560 | unsigned int ar_data:2; /* ordered/writeback */ | |
561 | unsigned int ar_meta:1; /* mount metafs */ | |
f15ab561 | 562 | unsigned int ar_discard:1; /* discard requests */ |
d34843d0 | 563 | unsigned int ar_errors:2; /* errors=withdraw | panic */ |
f25934c5 | 564 | unsigned int ar_nobarrier:1; /* do not send barriers */ |
90306c41 | 565 | unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ |
471f3db2 BM |
566 | unsigned int ar_loccookie:1; /* use location based readdir |
567 | cookies */ | |
48c2b613 | 568 | int ar_commit; /* Commit interval */ |
3d3c10f2 BM |
569 | int ar_statfs_quantum; /* The fast statfs interval */ |
570 | int ar_quota_quantum; /* The quota interval */ | |
571 | int ar_statfs_percent; /* The % change to force sync */ | |
b3b94faa DT |
572 | }; |
573 | ||
574 | struct gfs2_tune { | |
575 | spinlock_t gt_spin; | |
576 | ||
b3b94faa | 577 | unsigned int gt_logd_secs; |
b3b94faa | 578 | |
b3b94faa DT |
579 | unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ |
580 | unsigned int gt_quota_scale_num; /* Numerator */ | |
581 | unsigned int gt_quota_scale_den; /* Denominator */ | |
b3b94faa | 582 | unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
b3b94faa | 583 | unsigned int gt_new_files_jdata; |
b3b94faa | 584 | unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
b3b94faa | 585 | unsigned int gt_complain_secs; |
b3b94faa DT |
586 | unsigned int gt_statfs_quantum; |
587 | unsigned int gt_statfs_slow; | |
588 | }; | |
589 | ||
b3b94faa DT |
590 | enum { |
591 | SDF_JOURNAL_CHECKED = 0, | |
592 | SDF_JOURNAL_LIVE = 1, | |
593 | SDF_SHUTDOWN = 2, | |
254db57f | 594 | SDF_NOBARRIERS = 3, |
fe64d517 | 595 | SDF_NORECOVERY = 4, |
913a71d2 | 596 | SDF_DEMOTE = 5, |
ba6e9364 | 597 | SDF_NOJOURNALID = 6, |
e8ca5cc5 | 598 | SDF_RORECOVERY = 7, /* read only recovery */ |
fb6791d1 | 599 | SDF_SKIP_DLM_UNLOCK = 8, |
b3b94faa DT |
600 | }; |
601 | ||
2e60d768 BM |
602 | enum gfs2_freeze_state { |
603 | SFS_UNFROZEN = 0, | |
604 | SFS_STARTING_FREEZE = 1, | |
605 | SFS_FROZEN = 2, | |
606 | }; | |
607 | ||
b3b94faa DT |
608 | #define GFS2_FSNAME_LEN 256 |
609 | ||
bb8d8a6f SW |
610 | struct gfs2_inum_host { |
611 | u64 no_formal_ino; | |
612 | u64 no_addr; | |
613 | }; | |
614 | ||
615 | struct gfs2_sb_host { | |
616 | u32 sb_magic; | |
617 | u32 sb_type; | |
618 | u32 sb_format; | |
619 | ||
620 | u32 sb_fs_format; | |
621 | u32 sb_multihost_format; | |
622 | u32 sb_bsize; | |
623 | u32 sb_bsize_shift; | |
624 | ||
625 | struct gfs2_inum_host sb_master_dir; | |
626 | struct gfs2_inum_host sb_root_dir; | |
627 | ||
628 | char sb_lockproto[GFS2_LOCKNAME_LEN]; | |
629 | char sb_locktable[GFS2_LOCKNAME_LEN]; | |
630 | }; | |
631 | ||
f057f6cd SW |
632 | /* |
633 | * lm_mount() return values | |
634 | * | |
635 | * ls_jid - the journal ID this node should use | |
636 | * ls_first - this node is the first to mount the file system | |
637 | * ls_lockspace - lock module's context for this file system | |
638 | * ls_ops - lock module's functions | |
639 | */ | |
640 | ||
641 | struct lm_lockstruct { | |
feb47ca9 | 642 | int ls_jid; |
f057f6cd | 643 | unsigned int ls_first; |
f057f6cd | 644 | const struct lm_lockops *ls_ops; |
f057f6cd SW |
645 | dlm_lockspace_t *ls_dlm; |
646 | ||
e0c2a9aa DT |
647 | int ls_recover_jid_done; /* These two are deprecated, */ |
648 | int ls_recover_jid_status; /* used previously by gfs_controld */ | |
649 | ||
650 | struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ | |
651 | struct dlm_lksb ls_control_lksb; /* control_lock */ | |
652 | char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ | |
653 | struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ | |
57c7310b | 654 | char *ls_lvb_bits; |
e0c2a9aa DT |
655 | |
656 | spinlock_t ls_recover_spin; /* protects following fields */ | |
657 | unsigned long ls_recover_flags; /* DFL_ */ | |
658 | uint32_t ls_recover_mount; /* gen in first recover_done cb */ | |
659 | uint32_t ls_recover_start; /* gen in last recover_done cb */ | |
660 | uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ | |
661 | uint32_t ls_recover_size; /* size of recover_submit, recover_result */ | |
662 | uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ | |
663 | uint32_t *ls_recover_result; /* result of last jid recovery */ | |
f057f6cd SW |
664 | }; |
665 | ||
a245769f SW |
666 | struct gfs2_pcpu_lkstats { |
667 | /* One struct for each glock type */ | |
668 | struct gfs2_lkstats lkstats[10]; | |
669 | }; | |
670 | ||
b3b94faa DT |
671 | struct gfs2_sbd { |
672 | struct super_block *sd_vfs; | |
a245769f | 673 | struct gfs2_pcpu_lkstats __percpu *sd_lkstats; |
b3b94faa DT |
674 | struct kobject sd_kobj; |
675 | unsigned long sd_flags; /* SDF_... */ | |
f50dfaf7 | 676 | struct gfs2_sb_host sd_sb; |
b3b94faa DT |
677 | |
678 | /* Constants computed on mount */ | |
679 | ||
cd915493 SW |
680 | u32 sd_fsb2bb; |
681 | u32 sd_fsb2bb_shift; | |
682 | u32 sd_diptrs; /* Number of pointers in a dinode */ | |
683 | u32 sd_inptrs; /* Number of pointers in a indirect block */ | |
684 | u32 sd_jbsize; /* Size of a journaled data block */ | |
685 | u32 sd_hash_bsize; /* sizeof(exhash block) */ | |
686 | u32 sd_hash_bsize_shift; | |
687 | u32 sd_hash_ptrs; /* Number of pointers in a hash block */ | |
688 | u32 sd_qc_per_block; | |
a68a0a35 | 689 | u32 sd_blocks_per_bitmap; |
cd915493 SW |
690 | u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ |
691 | u32 sd_max_height; /* Max height of a file's metadata tree */ | |
ecc30c79 | 692 | u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
cd915493 | 693 | u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
ecc30c79 | 694 | u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
471f3db2 | 695 | u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ |
b3b94faa DT |
696 | |
697 | struct gfs2_args sd_args; /* Mount arguments */ | |
698 | struct gfs2_tune sd_tune; /* Filesystem tuning structure */ | |
699 | ||
700 | /* Lock Stuff */ | |
701 | ||
702 | struct lm_lockstruct sd_lockstruct; | |
b3b94faa DT |
703 | struct gfs2_holder sd_live_gh; |
704 | struct gfs2_glock *sd_rename_gl; | |
24972557 | 705 | struct gfs2_glock *sd_freeze_gl; |
2e60d768 | 706 | struct work_struct sd_freeze_work; |
e402746a SW |
707 | wait_queue_head_t sd_glock_wait; |
708 | atomic_t sd_glock_disposal; | |
3942ae53 | 709 | struct completion sd_locking_init; |
fd95e81c | 710 | struct completion sd_wdack; |
e0c2a9aa | 711 | struct delayed_work sd_control_work; |
b3b94faa DT |
712 | |
713 | /* Inode Stuff */ | |
714 | ||
9b8df98f SW |
715 | struct dentry *sd_master_dir; |
716 | struct dentry *sd_root_dir; | |
717 | ||
f42faf4f | 718 | struct inode *sd_jindex; |
f42faf4f | 719 | struct inode *sd_statfs_inode; |
f42faf4f | 720 | struct inode *sd_sc_inode; |
f42faf4f SW |
721 | struct inode *sd_qc_inode; |
722 | struct inode *sd_rindex; | |
723 | struct inode *sd_quota_inode; | |
b3b94faa | 724 | |
b3b94faa DT |
725 | /* StatFS stuff */ |
726 | ||
727 | spinlock_t sd_statfs_spin; | |
bd209cc0 AV |
728 | struct gfs2_statfs_change_host sd_statfs_master; |
729 | struct gfs2_statfs_change_host sd_statfs_local; | |
3d3c10f2 | 730 | int sd_statfs_force_sync; |
b3b94faa DT |
731 | |
732 | /* Resource group stuff */ | |
733 | ||
cf45b752 | 734 | int sd_rindex_uptodate; |
b3b94faa | 735 | spinlock_t sd_rindex_spin; |
7c9ca621 | 736 | struct rb_root sd_rindex_tree; |
b3b94faa | 737 | unsigned int sd_rgrps; |
3921120e | 738 | unsigned int sd_max_rg_data; |
b3b94faa DT |
739 | |
740 | /* Journal index stuff */ | |
741 | ||
742 | struct list_head sd_jindex_list; | |
743 | spinlock_t sd_jindex_spin; | |
f55ab26a | 744 | struct mutex sd_jindex_mutex; |
b3b94faa | 745 | unsigned int sd_journals; |
b3b94faa DT |
746 | |
747 | struct gfs2_jdesc *sd_jdesc; | |
748 | struct gfs2_holder sd_journal_gh; | |
749 | struct gfs2_holder sd_jinode_gh; | |
750 | ||
b3b94faa | 751 | struct gfs2_holder sd_sc_gh; |
b3b94faa DT |
752 | struct gfs2_holder sd_qc_gh; |
753 | ||
0e48e055 BP |
754 | struct completion sd_journal_ready; |
755 | ||
b3b94faa DT |
756 | /* Daemon stuff */ |
757 | ||
b3b94faa DT |
758 | struct task_struct *sd_logd_process; |
759 | struct task_struct *sd_quotad_process; | |
b3b94faa | 760 | |
b3b94faa DT |
761 | /* Quota stuff */ |
762 | ||
763 | struct list_head sd_quota_list; | |
764 | atomic_t sd_quota_count; | |
f55ab26a | 765 | struct mutex sd_quota_mutex; |
e46c772d | 766 | struct mutex sd_quota_sync_mutex; |
37b2c837 | 767 | wait_queue_head_t sd_quota_wait; |
813e0c46 SW |
768 | struct list_head sd_trunc_list; |
769 | spinlock_t sd_trunc_lock; | |
b3b94faa DT |
770 | |
771 | unsigned int sd_quota_slots; | |
ee2411a8 | 772 | unsigned long *sd_quota_bitmap; |
2d9e7230 | 773 | spinlock_t sd_bitmap_lock; |
b3b94faa | 774 | |
cd915493 | 775 | u64 sd_quota_sync_gen; |
b3b94faa DT |
776 | |
777 | /* Log stuff */ | |
778 | ||
70d4ee94 SW |
779 | struct address_space sd_aspace; |
780 | ||
b3b94faa | 781 | spinlock_t sd_log_lock; |
b3b94faa | 782 | |
16ca9412 | 783 | struct gfs2_trans *sd_log_tr; |
b3b94faa | 784 | unsigned int sd_log_blks_reserved; |
2e95e3f6 | 785 | int sd_log_commited_revoke; |
b3b94faa | 786 | |
5e687eac | 787 | atomic_t sd_log_pinned; |
b3b94faa | 788 | unsigned int sd_log_num_revoke; |
f42faf4f | 789 | |
b3b94faa | 790 | struct list_head sd_log_le_revoke; |
d7b616e2 | 791 | struct list_head sd_log_le_ordered; |
45138990 | 792 | spinlock_t sd_ordered_lock; |
b3b94faa | 793 | |
5e687eac BM |
794 | atomic_t sd_log_thresh1; |
795 | atomic_t sd_log_thresh2; | |
fd041f0b | 796 | atomic_t sd_log_blks_free; |
5e687eac BM |
797 | wait_queue_head_t sd_log_waitq; |
798 | wait_queue_head_t sd_logd_waitq; | |
b3b94faa | 799 | |
cd915493 | 800 | u64 sd_log_sequence; |
b3b94faa DT |
801 | unsigned int sd_log_head; |
802 | unsigned int sd_log_tail; | |
b3b94faa DT |
803 | int sd_log_idle; |
804 | ||
484adff8 | 805 | struct rw_semaphore sd_log_flush_lock; |
16615be1 | 806 | atomic_t sd_log_in_flight; |
e8c92ed7 | 807 | struct bio *sd_log_bio; |
16615be1 | 808 | wait_queue_head_t sd_log_flush_wait; |
e8c92ed7 | 809 | int sd_log_error; |
b3b94faa | 810 | |
2e60d768 BM |
811 | atomic_t sd_reserving_log; |
812 | wait_queue_head_t sd_reserving_log_wait; | |
813 | ||
b3b94faa | 814 | unsigned int sd_log_flush_head; |
cd915493 | 815 | u64 sd_log_flush_wrapped; |
b3b94faa | 816 | |
d6a079e8 | 817 | spinlock_t sd_ail_lock; |
b3b94faa DT |
818 | struct list_head sd_ail1_list; |
819 | struct list_head sd_ail2_list; | |
b3b94faa | 820 | |
b3b94faa | 821 | /* For quiescing the filesystem */ |
b3b94faa | 822 | struct gfs2_holder sd_freeze_gh; |
2e60d768 BM |
823 | atomic_t sd_freeze_state; |
824 | struct mutex sd_freeze_mutex; | |
b3b94faa | 825 | |
b3b94faa DT |
826 | char sd_fsname[GFS2_FSNAME_LEN]; |
827 | char sd_table_name[GFS2_FSNAME_LEN]; | |
828 | char sd_proto_name[GFS2_FSNAME_LEN]; | |
829 | ||
830 | /* Debugging crud */ | |
831 | ||
832 | unsigned long sd_last_warning; | |
5f882096 | 833 | struct dentry *debugfs_dir; /* debugfs directory */ |
a245769f SW |
834 | struct dentry *debugfs_dentry_glocks; |
835 | struct dentry *debugfs_dentry_glstats; | |
836 | struct dentry *debugfs_dentry_sbstats; | |
b3b94faa DT |
837 | }; |
838 | ||
a245769f SW |
839 | static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) |
840 | { | |
841 | gl->gl_stats.stats[which]++; | |
842 | } | |
843 | ||
844 | static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) | |
845 | { | |
15562c43 | 846 | const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
a245769f SW |
847 | preempt_disable(); |
848 | this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; | |
849 | preempt_enable(); | |
850 | } | |
851 | ||
b3b94faa DT |
852 | #endif /* __INCORE_DOT_H__ */ |
853 |