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 */ | |
0e27c18c | 100 | #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ |
09010978 | 101 | #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ |
8e2e0047 BP |
102 | spinlock_t rd_rsspin; /* protects reservation related vars */ |
103 | struct rb_root rd_rstree; /* multi-block reservation tree */ | |
b3b94faa DT |
104 | }; |
105 | ||
4a993fb1 SW |
106 | struct gfs2_rbm { |
107 | struct gfs2_rgrpd *rgd; | |
4a993fb1 | 108 | u32 offset; /* The offset is bitmap relative */ |
e579ed4f | 109 | int bii; /* Bitmap index */ |
4a993fb1 SW |
110 | }; |
111 | ||
e579ed4f BP |
112 | static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) |
113 | { | |
114 | return rbm->rgd->rd_bits + rbm->bii; | |
115 | } | |
116 | ||
4a993fb1 SW |
117 | static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) |
118 | { | |
e579ed4f BP |
119 | return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + |
120 | rbm->offset; | |
4a993fb1 SW |
121 | } |
122 | ||
5b924ae2 SW |
123 | static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, |
124 | const struct gfs2_rbm *rbm2) | |
125 | { | |
e579ed4f | 126 | return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && |
5b924ae2 SW |
127 | (rbm1->offset == rbm2->offset); |
128 | } | |
129 | ||
b3b94faa DT |
130 | enum gfs2_state_bits { |
131 | BH_Pinned = BH_PrivateStart, | |
f42faf4f | 132 | BH_Escaped = BH_PrivateStart + 1, |
64dd153c | 133 | BH_Zeronew = BH_PrivateStart + 2, |
b3b94faa DT |
134 | }; |
135 | ||
136 | BUFFER_FNS(Pinned, pinned) | |
137 | TAS_BUFFER_FNS(Pinned, pinned) | |
f42faf4f SW |
138 | BUFFER_FNS(Escaped, escaped) |
139 | TAS_BUFFER_FNS(Escaped, escaped) | |
64dd153c BM |
140 | BUFFER_FNS(Zeronew, zeronew) |
141 | TAS_BUFFER_FNS(Zeronew, zeronew) | |
b3b94faa DT |
142 | |
143 | struct gfs2_bufdata { | |
144 | struct buffer_head *bd_bh; | |
145 | struct gfs2_glock *bd_gl; | |
c50b91c4 | 146 | u64 bd_blkno; |
82e86087 | 147 | |
c0752aa7 BP |
148 | struct list_head bd_list; |
149 | const struct gfs2_log_operations *bd_ops; | |
b3b94faa | 150 | |
16ca9412 | 151 | struct gfs2_trans *bd_tr; |
b3b94faa DT |
152 | struct list_head bd_ail_st_list; |
153 | struct list_head bd_ail_gl_list; | |
154 | }; | |
155 | ||
f057f6cd SW |
156 | /* |
157 | * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a | |
158 | * prefix of lock_dlm_ gets awkward. | |
159 | */ | |
160 | ||
161 | #define GDLM_STRNAME_BYTES 25 | |
162 | #define GDLM_LVB_SIZE 32 | |
163 | ||
e0c2a9aa DT |
164 | /* |
165 | * ls_recover_flags: | |
166 | * | |
167 | * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been | |
168 | * held by failed nodes whose journals need recovery. Those locks should | |
169 | * only be used for journal recovery until the journal recovery is done. | |
170 | * This is set by the dlm recover_prep callback and cleared by the | |
171 | * gfs2_control thread when journal recovery is complete. To avoid | |
172 | * races between recover_prep setting and gfs2_control clearing, recover_spin | |
173 | * is held while changing this bit and reading/writing recover_block | |
174 | * and recover_start. | |
175 | * | |
176 | * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. | |
177 | * | |
178 | * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing | |
179 | * recovery of all journals before allowing other nodes to mount the fs. | |
180 | * This is cleared when FIRST_MOUNT_DONE is set. | |
181 | * | |
182 | * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished | |
183 | * recovery of all journals, and now allows other nodes to mount the fs. | |
184 | * | |
185 | * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared | |
186 | * BLOCK_LOCKS for the first time. The gfs2_control thread should now | |
187 | * control clearing BLOCK_LOCKS for further recoveries. | |
188 | * | |
189 | * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. | |
190 | * | |
191 | * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() | |
192 | * and recover_done(), i.e. set while recover_block == recover_start. | |
193 | */ | |
194 | ||
f057f6cd SW |
195 | enum { |
196 | DFL_BLOCK_LOCKS = 0, | |
e0c2a9aa DT |
197 | DFL_NO_DLM_OPS = 1, |
198 | DFL_FIRST_MOUNT = 2, | |
199 | DFL_FIRST_MOUNT_DONE = 3, | |
200 | DFL_MOUNT_DONE = 4, | |
201 | DFL_UNMOUNT = 5, | |
202 | DFL_DLM_RECOVERY = 6, | |
f057f6cd SW |
203 | }; |
204 | ||
205 | struct lm_lockname { | |
206 | u64 ln_number; | |
207 | unsigned int ln_type; | |
208 | }; | |
209 | ||
210 | #define lm_name_equal(name1, name2) \ | |
211 | (((name1)->ln_number == (name2)->ln_number) && \ | |
212 | ((name1)->ln_type == (name2)->ln_type)) | |
213 | ||
214 | ||
b3b94faa | 215 | struct gfs2_glock_operations { |
06dfc306 | 216 | void (*go_sync) (struct gfs2_glock *gl); |
6802e340 | 217 | int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); |
1a14d3a6 | 218 | void (*go_inval) (struct gfs2_glock *gl, int flags); |
97cc1025 | 219 | int (*go_demote_ok) (const struct gfs2_glock *gl); |
1a14d3a6 SW |
220 | int (*go_lock) (struct gfs2_holder *gh); |
221 | void (*go_unlock) (struct gfs2_holder *gh); | |
ac3beb6a | 222 | void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); |
81ffbf65 | 223 | void (*go_callback)(struct gfs2_glock *gl, bool remote); |
8fb4b536 | 224 | const int go_type; |
009d8518 SW |
225 | const unsigned long go_flags; |
226 | #define GLOF_ASPACE 1 | |
dba2d70c | 227 | #define GLOF_LVB 2 |
e7ccaf5f | 228 | #define GLOF_LRU 4 |
b3b94faa DT |
229 | }; |
230 | ||
a245769f SW |
231 | enum { |
232 | GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ | |
233 | GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ | |
234 | GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ | |
235 | GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ | |
236 | GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ | |
237 | GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ | |
238 | GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ | |
239 | GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ | |
240 | GFS2_NR_LKSTATS | |
241 | }; | |
242 | ||
243 | struct gfs2_lkstats { | |
244 | s64 stats[GFS2_NR_LKSTATS]; | |
245 | }; | |
246 | ||
b3b94faa | 247 | enum { |
b3b94faa | 248 | /* States */ |
6802e340 | 249 | HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ |
b3b94faa | 250 | HIF_FIRST = 7, |
fee852e3 | 251 | HIF_WAIT = 10, |
b3b94faa DT |
252 | }; |
253 | ||
254 | struct gfs2_holder { | |
255 | struct list_head gh_list; | |
256 | ||
257 | struct gfs2_glock *gh_gl; | |
b1e058da | 258 | struct pid *gh_owner_pid; |
b3b94faa | 259 | unsigned int gh_state; |
fe1bdedc | 260 | unsigned gh_flags; |
b3b94faa DT |
261 | |
262 | int gh_error; | |
6802e340 | 263 | unsigned long gh_iflags; /* HIF_... */ |
d0dc80db | 264 | unsigned long gh_ip; |
b3b94faa DT |
265 | }; |
266 | ||
a937cca2 JK |
267 | /* Number of quota types we support */ |
268 | #define GFS2_MAXQUOTAS 2 | |
269 | ||
8e2e0047 BP |
270 | /* Resource group multi-block reservation, in order of appearance: |
271 | ||
272 | Step 1. Function prepares to write, allocates a mb, sets the size hint. | |
273 | Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info | |
274 | Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use | |
275 | Step 4. Bits are assigned from the rgrp based on either the reservation | |
276 | or wherever it can. | |
277 | */ | |
278 | ||
279 | struct gfs2_blkreserv { | |
280 | /* components used during write (step 1): */ | |
281 | atomic_t rs_sizehint; /* hint of the write size */ | |
282 | ||
8e2e0047 BP |
283 | struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ |
284 | struct rb_node rs_node; /* link to other block reservations */ | |
9e733d39 | 285 | struct gfs2_rbm rs_rbm; /* Start of reservation */ |
8e2e0047 | 286 | u32 rs_free; /* how many blocks are still free */ |
9e733d39 | 287 | u64 rs_inum; /* Inode number for reservation */ |
8e2e0047 BP |
288 | |
289 | /* ancillary quota stuff */ | |
a937cca2 JK |
290 | struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS]; |
291 | struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS]; | |
8e2e0047 BP |
292 | unsigned int rs_qa_qd_num; |
293 | }; | |
294 | ||
7b9cff46 SW |
295 | /* |
296 | * Allocation parameters | |
297 | * @target: The number of blocks we'd ideally like to allocate | |
298 | * @aflags: The flags (e.g. Orlov flag) | |
299 | * | |
300 | * The intent is to gradually expand this structure over time in | |
301 | * order to give more information, e.g. alignment, min extent size | |
302 | * to the allocation code. | |
303 | */ | |
304 | struct gfs2_alloc_parms { | |
b8fbf471 | 305 | u64 target; |
25435e5e | 306 | u32 min_target; |
7b9cff46 | 307 | u32 aflags; |
25435e5e | 308 | u64 allowed; |
7b9cff46 SW |
309 | }; |
310 | ||
b3b94faa | 311 | enum { |
6802e340 | 312 | GLF_LOCK = 1, |
6802e340 SW |
313 | GLF_DEMOTE = 3, |
314 | GLF_PENDING_DEMOTE = 4, | |
315 | GLF_DEMOTE_IN_PROGRESS = 5, | |
316 | GLF_DIRTY = 6, | |
317 | GLF_LFLUSH = 7, | |
318 | GLF_INVALIDATE_IN_PROGRESS = 8, | |
319 | GLF_REPLY_PENDING = 9, | |
f057f6cd SW |
320 | GLF_INITIAL = 10, |
321 | GLF_FROZEN = 11, | |
7b5e3d5f | 322 | GLF_QUEUED = 12, |
627c10b7 SW |
323 | GLF_LRU = 13, |
324 | GLF_OBJECT = 14, /* Used only for tracing */ | |
a245769f | 325 | GLF_BLOCKING = 15, |
b3b94faa DT |
326 | }; |
327 | ||
328 | struct gfs2_glock { | |
bc015cb8 | 329 | struct hlist_bl_node gl_list; |
a245769f | 330 | struct gfs2_sbd *gl_sbd; |
b3b94faa DT |
331 | unsigned long gl_flags; /* GLF_... */ |
332 | struct lm_lockname gl_name; | |
b3b94faa | 333 | |
e66cf161 SW |
334 | struct lockref gl_lockref; |
335 | #define gl_spin gl_lockref.lock | |
b3b94faa | 336 | |
47a25380 SW |
337 | /* State fields protected by gl_spin */ |
338 | unsigned int gl_state:2, /* Current state */ | |
339 | gl_target:2, /* Target state */ | |
340 | gl_demote_state:2, /* State requested by remote node */ | |
341 | gl_req:2, /* State in last dlm request */ | |
342 | gl_reply:8; /* Last reply from the dlm */ | |
343 | ||
37b2fa6a | 344 | unsigned int gl_hash; |
3b8249f6 | 345 | unsigned long gl_demote_time; /* time of first demote request */ |
7cf8dcd3 | 346 | long gl_hold_time; |
b3b94faa | 347 | struct list_head gl_holders; |
b3b94faa | 348 | |
8fb4b536 | 349 | const struct gfs2_glock_operations *gl_ops; |
a245769f SW |
350 | ktime_t gl_dstamp; |
351 | struct gfs2_lkstats gl_stats; | |
f057f6cd | 352 | struct dlm_lksb gl_lksb; |
c4f68a13 | 353 | unsigned long gl_tchange; |
b3b94faa DT |
354 | void *gl_object; |
355 | ||
97cc1025 | 356 | struct list_head gl_lru; |
b3b94faa DT |
357 | struct list_head gl_ail_list; |
358 | atomic_t gl_ail_count; | |
f42ab085 | 359 | atomic_t gl_revokes; |
c4f68a13 | 360 | struct delayed_work gl_work; |
7005c3e4 SW |
361 | union { |
362 | /* For inode and iopen glocks only */ | |
363 | struct work_struct gl_delete; | |
364 | /* For rgrp glocks only */ | |
365 | struct { | |
366 | loff_t start; | |
367 | loff_t end; | |
368 | } gl_vm; | |
369 | }; | |
bc015cb8 | 370 | struct rcu_head gl_rcu; |
b3b94faa DT |
371 | }; |
372 | ||
da755fdb SW |
373 | #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
374 | ||
b3b94faa | 375 | enum { |
bfded27b | 376 | GIF_INVALID = 0, |
b3b94faa | 377 | GIF_QD_LOCKED = 1, |
40ac218f | 378 | GIF_ALLOC_FAILED = 2, |
b3b94faa | 379 | GIF_SW_PAGED = 3, |
45138990 | 380 | GIF_ORDERED = 4, |
05978803 | 381 | GIF_FREE_VFS_INODE = 5, |
b3b94faa DT |
382 | }; |
383 | ||
384 | struct gfs2_inode { | |
320dd101 | 385 | struct inode i_inode; |
dbb7cae2 SW |
386 | u64 i_no_addr; |
387 | u64 i_no_formal_ino; | |
bcf0b5b3 | 388 | u64 i_generation; |
3767ac21 | 389 | u64 i_eattr; |
b3b94faa | 390 | unsigned long i_flags; /* GIF_... */ |
feaa7bba | 391 | struct gfs2_glock *i_gl; /* Move into i_gh? */ |
b3b94faa | 392 | struct gfs2_holder i_iopen_gh; |
f42faf4f | 393 | struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
8e2e0047 | 394 | struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ |
54335b1f | 395 | struct gfs2_rgrpd *i_rgd; |
ce276b06 | 396 | u64 i_goal; /* goal block for allocations */ |
b3b94faa | 397 | struct rw_semaphore i_rw_mutex; |
45138990 | 398 | struct list_head i_ordered; |
813e0c46 | 399 | struct list_head i_trunc_list; |
17d539f0 | 400 | __be64 *i_hash_cache; |
ad6203f2 | 401 | u32 i_entries; |
383f01fb | 402 | u32 i_diskflags; |
ecc30c79 | 403 | u8 i_height; |
9a004508 | 404 | u8 i_depth; |
b3b94faa DT |
405 | }; |
406 | ||
feaa7bba SW |
407 | /* |
408 | * Since i_inode is the first element of struct gfs2_inode, | |
409 | * this is effectively a cast. | |
410 | */ | |
320dd101 SW |
411 | static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
412 | { | |
413 | return container_of(inode, struct gfs2_inode, i_inode); | |
414 | } | |
415 | ||
bf36a713 | 416 | static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
feaa7bba SW |
417 | { |
418 | return inode->i_sb->s_fs_info; | |
419 | } | |
420 | ||
b3b94faa | 421 | struct gfs2_file { |
f55ab26a | 422 | struct mutex f_fl_mutex; |
b3b94faa | 423 | struct gfs2_holder f_fl_gh; |
b3b94faa DT |
424 | }; |
425 | ||
b3b94faa DT |
426 | struct gfs2_revoke_replay { |
427 | struct list_head rr_list; | |
cd915493 | 428 | u64 rr_blkno; |
b3b94faa DT |
429 | unsigned int rr_where; |
430 | }; | |
431 | ||
b3b94faa | 432 | enum { |
b3b94faa DT |
433 | QDF_CHANGE = 1, |
434 | QDF_LOCKED = 2, | |
662e3a55 | 435 | QDF_REFRESH = 3, |
9cde2898 | 436 | QDF_QMSG_QUIET = 4, |
b3b94faa DT |
437 | }; |
438 | ||
439 | struct gfs2_quota_data { | |
c754fbbb | 440 | struct hlist_bl_node qd_hlist; |
b3b94faa | 441 | struct list_head qd_list; |
2147dbfd | 442 | struct kqid qd_id; |
c754fbbb | 443 | struct gfs2_sbd *qd_sbd; |
9b9f039d | 444 | struct lockref qd_lockref; |
2147dbfd | 445 | struct list_head qd_lru; |
c754fbbb | 446 | unsigned qd_hash; |
b3b94faa | 447 | |
b3b94faa DT |
448 | unsigned long qd_flags; /* QDF_... */ |
449 | ||
cd915493 SW |
450 | s64 qd_change; |
451 | s64 qd_change_sync; | |
b3b94faa DT |
452 | |
453 | unsigned int qd_slot; | |
454 | unsigned int qd_slot_count; | |
455 | ||
456 | struct buffer_head *qd_bh; | |
457 | struct gfs2_quota_change *qd_bh_qc; | |
458 | unsigned int qd_bh_count; | |
459 | ||
460 | struct gfs2_glock *qd_gl; | |
461 | struct gfs2_quota_lvb qd_qb; | |
462 | ||
cd915493 | 463 | u64 qd_sync_gen; |
b3b94faa | 464 | unsigned long qd_last_warn; |
c754fbbb | 465 | struct rcu_head qd_rcu; |
b3b94faa DT |
466 | }; |
467 | ||
b3b94faa | 468 | struct gfs2_trans { |
d0dc80db | 469 | unsigned long tr_ip; |
b3b94faa DT |
470 | |
471 | unsigned int tr_blocks; | |
472 | unsigned int tr_revokes; | |
473 | unsigned int tr_reserved; | |
654a6d2f SW |
474 | unsigned int tr_touched:1; |
475 | unsigned int tr_attached:1; | |
24972557 | 476 | unsigned int tr_alloced:1; |
b3b94faa | 477 | |
b3b94faa | 478 | unsigned int tr_num_buf_new; |
2332c443 | 479 | unsigned int tr_num_databuf_new; |
b3b94faa | 480 | unsigned int tr_num_buf_rm; |
2332c443 | 481 | unsigned int tr_num_databuf_rm; |
b3b94faa DT |
482 | unsigned int tr_num_revoke; |
483 | unsigned int tr_num_revoke_rm; | |
b3b94faa | 484 | |
16ca9412 | 485 | struct list_head tr_list; |
d69a3c65 SW |
486 | struct list_head tr_databuf; |
487 | struct list_head tr_buf; | |
b3b94faa | 488 | |
16ca9412 BM |
489 | unsigned int tr_first; |
490 | struct list_head tr_ail1_list; | |
491 | struct list_head tr_ail2_list; | |
b3b94faa DT |
492 | }; |
493 | ||
da6dd40d | 494 | struct gfs2_journal_extent { |
b50f227b | 495 | struct list_head list; |
da6dd40d BP |
496 | |
497 | unsigned int lblock; /* First logical block */ | |
498 | u64 dblock; /* First disk block */ | |
499 | u64 blocks; | |
500 | }; | |
501 | ||
b3b94faa DT |
502 | struct gfs2_jdesc { |
503 | struct list_head jd_list; | |
da6dd40d | 504 | struct list_head extent_list; |
b50f227b | 505 | unsigned int nr_extents; |
6ecd7c2d | 506 | struct work_struct jd_work; |
7359a19c | 507 | struct inode *jd_inode; |
fe64d517 SW |
508 | unsigned long jd_flags; |
509 | #define JDF_RECOVERY 1 | |
b3b94faa | 510 | unsigned int jd_jid; |
b3b94faa | 511 | unsigned int jd_blocks; |
376d3778 | 512 | int jd_recover_error; |
a17d758b BP |
513 | /* Replay stuff */ |
514 | ||
515 | unsigned int jd_found_blocks; | |
516 | unsigned int jd_found_revokes; | |
517 | unsigned int jd_replayed_blocks; | |
518 | ||
519 | struct list_head jd_revoke_list; | |
520 | unsigned int jd_replay_tail; | |
521 | ||
b3b94faa DT |
522 | }; |
523 | ||
bb8d8a6f SW |
524 | struct gfs2_statfs_change_host { |
525 | s64 sc_total; | |
526 | s64 sc_free; | |
527 | s64 sc_dinodes; | |
528 | }; | |
529 | ||
b3b94faa DT |
530 | #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
531 | #define GFS2_QUOTA_OFF 0 | |
532 | #define GFS2_QUOTA_ACCOUNT 1 | |
533 | #define GFS2_QUOTA_ON 2 | |
534 | ||
535 | #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED | |
536 | #define GFS2_DATA_WRITEBACK 1 | |
537 | #define GFS2_DATA_ORDERED 2 | |
538 | ||
d34843d0 BP |
539 | #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
540 | #define GFS2_ERRORS_WITHDRAW 0 | |
541 | #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ | |
542 | #define GFS2_ERRORS_RO 2 /* place holder for future feature */ | |
543 | #define GFS2_ERRORS_PANIC 3 | |
544 | ||
b3b94faa | 545 | struct gfs2_args { |
37ec89e8 SW |
546 | char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
547 | char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ | |
548 | char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ | |
549 | unsigned int ar_spectator:1; /* Don't get a journal */ | |
37ec89e8 | 550 | unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
37ec89e8 | 551 | unsigned int ar_debug:1; /* Oops on errors */ |
37ec89e8 SW |
552 | unsigned int ar_posix_acl:1; /* Enable posix acls */ |
553 | unsigned int ar_quota:2; /* off/account/on */ | |
554 | unsigned int ar_suiddir:1; /* suiddir support */ | |
555 | unsigned int ar_data:2; /* ordered/writeback */ | |
556 | unsigned int ar_meta:1; /* mount metafs */ | |
f15ab561 | 557 | unsigned int ar_discard:1; /* discard requests */ |
d34843d0 | 558 | unsigned int ar_errors:2; /* errors=withdraw | panic */ |
f25934c5 | 559 | unsigned int ar_nobarrier:1; /* do not send barriers */ |
90306c41 | 560 | unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ |
48c2b613 | 561 | int ar_commit; /* Commit interval */ |
3d3c10f2 BM |
562 | int ar_statfs_quantum; /* The fast statfs interval */ |
563 | int ar_quota_quantum; /* The quota interval */ | |
564 | int ar_statfs_percent; /* The % change to force sync */ | |
b3b94faa DT |
565 | }; |
566 | ||
567 | struct gfs2_tune { | |
568 | spinlock_t gt_spin; | |
569 | ||
b3b94faa | 570 | unsigned int gt_logd_secs; |
b3b94faa | 571 | |
b3b94faa DT |
572 | unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ |
573 | unsigned int gt_quota_scale_num; /* Numerator */ | |
574 | unsigned int gt_quota_scale_den; /* Denominator */ | |
b3b94faa | 575 | unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
b3b94faa | 576 | unsigned int gt_new_files_jdata; |
b3b94faa | 577 | unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
b3b94faa | 578 | unsigned int gt_complain_secs; |
b3b94faa DT |
579 | unsigned int gt_statfs_quantum; |
580 | unsigned int gt_statfs_slow; | |
581 | }; | |
582 | ||
b3b94faa DT |
583 | enum { |
584 | SDF_JOURNAL_CHECKED = 0, | |
585 | SDF_JOURNAL_LIVE = 1, | |
586 | SDF_SHUTDOWN = 2, | |
254db57f | 587 | SDF_NOBARRIERS = 3, |
fe64d517 | 588 | SDF_NORECOVERY = 4, |
913a71d2 | 589 | SDF_DEMOTE = 5, |
ba6e9364 | 590 | SDF_NOJOURNALID = 6, |
e8ca5cc5 | 591 | SDF_RORECOVERY = 7, /* read only recovery */ |
fb6791d1 | 592 | SDF_SKIP_DLM_UNLOCK = 8, |
b3b94faa DT |
593 | }; |
594 | ||
2e60d768 BM |
595 | enum gfs2_freeze_state { |
596 | SFS_UNFROZEN = 0, | |
597 | SFS_STARTING_FREEZE = 1, | |
598 | SFS_FROZEN = 2, | |
599 | }; | |
600 | ||
b3b94faa DT |
601 | #define GFS2_FSNAME_LEN 256 |
602 | ||
bb8d8a6f SW |
603 | struct gfs2_inum_host { |
604 | u64 no_formal_ino; | |
605 | u64 no_addr; | |
606 | }; | |
607 | ||
608 | struct gfs2_sb_host { | |
609 | u32 sb_magic; | |
610 | u32 sb_type; | |
611 | u32 sb_format; | |
612 | ||
613 | u32 sb_fs_format; | |
614 | u32 sb_multihost_format; | |
615 | u32 sb_bsize; | |
616 | u32 sb_bsize_shift; | |
617 | ||
618 | struct gfs2_inum_host sb_master_dir; | |
619 | struct gfs2_inum_host sb_root_dir; | |
620 | ||
621 | char sb_lockproto[GFS2_LOCKNAME_LEN]; | |
622 | char sb_locktable[GFS2_LOCKNAME_LEN]; | |
623 | }; | |
624 | ||
f057f6cd SW |
625 | /* |
626 | * lm_mount() return values | |
627 | * | |
628 | * ls_jid - the journal ID this node should use | |
629 | * ls_first - this node is the first to mount the file system | |
630 | * ls_lockspace - lock module's context for this file system | |
631 | * ls_ops - lock module's functions | |
632 | */ | |
633 | ||
634 | struct lm_lockstruct { | |
feb47ca9 | 635 | int ls_jid; |
f057f6cd | 636 | unsigned int ls_first; |
f057f6cd | 637 | const struct lm_lockops *ls_ops; |
f057f6cd SW |
638 | dlm_lockspace_t *ls_dlm; |
639 | ||
e0c2a9aa DT |
640 | int ls_recover_jid_done; /* These two are deprecated, */ |
641 | int ls_recover_jid_status; /* used previously by gfs_controld */ | |
642 | ||
643 | struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ | |
644 | struct dlm_lksb ls_control_lksb; /* control_lock */ | |
645 | char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ | |
646 | struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ | |
57c7310b | 647 | char *ls_lvb_bits; |
e0c2a9aa DT |
648 | |
649 | spinlock_t ls_recover_spin; /* protects following fields */ | |
650 | unsigned long ls_recover_flags; /* DFL_ */ | |
651 | uint32_t ls_recover_mount; /* gen in first recover_done cb */ | |
652 | uint32_t ls_recover_start; /* gen in last recover_done cb */ | |
653 | uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ | |
654 | uint32_t ls_recover_size; /* size of recover_submit, recover_result */ | |
655 | uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ | |
656 | uint32_t *ls_recover_result; /* result of last jid recovery */ | |
f057f6cd SW |
657 | }; |
658 | ||
a245769f SW |
659 | struct gfs2_pcpu_lkstats { |
660 | /* One struct for each glock type */ | |
661 | struct gfs2_lkstats lkstats[10]; | |
662 | }; | |
663 | ||
b3b94faa DT |
664 | struct gfs2_sbd { |
665 | struct super_block *sd_vfs; | |
a245769f | 666 | struct gfs2_pcpu_lkstats __percpu *sd_lkstats; |
b3b94faa DT |
667 | struct kobject sd_kobj; |
668 | unsigned long sd_flags; /* SDF_... */ | |
f50dfaf7 | 669 | struct gfs2_sb_host sd_sb; |
b3b94faa DT |
670 | |
671 | /* Constants computed on mount */ | |
672 | ||
cd915493 SW |
673 | u32 sd_fsb2bb; |
674 | u32 sd_fsb2bb_shift; | |
675 | u32 sd_diptrs; /* Number of pointers in a dinode */ | |
676 | u32 sd_inptrs; /* Number of pointers in a indirect block */ | |
677 | u32 sd_jbsize; /* Size of a journaled data block */ | |
678 | u32 sd_hash_bsize; /* sizeof(exhash block) */ | |
679 | u32 sd_hash_bsize_shift; | |
680 | u32 sd_hash_ptrs; /* Number of pointers in a hash block */ | |
681 | u32 sd_qc_per_block; | |
a68a0a35 | 682 | u32 sd_blocks_per_bitmap; |
cd915493 SW |
683 | u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ |
684 | u32 sd_max_height; /* Max height of a file's metadata tree */ | |
ecc30c79 | 685 | u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
cd915493 | 686 | u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
ecc30c79 | 687 | u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
b3b94faa DT |
688 | |
689 | struct gfs2_args sd_args; /* Mount arguments */ | |
690 | struct gfs2_tune sd_tune; /* Filesystem tuning structure */ | |
691 | ||
692 | /* Lock Stuff */ | |
693 | ||
694 | struct lm_lockstruct sd_lockstruct; | |
b3b94faa DT |
695 | struct gfs2_holder sd_live_gh; |
696 | struct gfs2_glock *sd_rename_gl; | |
24972557 | 697 | struct gfs2_glock *sd_freeze_gl; |
2e60d768 | 698 | struct work_struct sd_freeze_work; |
e402746a SW |
699 | wait_queue_head_t sd_glock_wait; |
700 | atomic_t sd_glock_disposal; | |
3942ae53 | 701 | struct completion sd_locking_init; |
fd95e81c | 702 | struct completion sd_wdack; |
e0c2a9aa | 703 | struct delayed_work sd_control_work; |
b3b94faa DT |
704 | |
705 | /* Inode Stuff */ | |
706 | ||
9b8df98f SW |
707 | struct dentry *sd_master_dir; |
708 | struct dentry *sd_root_dir; | |
709 | ||
f42faf4f | 710 | struct inode *sd_jindex; |
f42faf4f | 711 | struct inode *sd_statfs_inode; |
f42faf4f | 712 | struct inode *sd_sc_inode; |
f42faf4f SW |
713 | struct inode *sd_qc_inode; |
714 | struct inode *sd_rindex; | |
715 | struct inode *sd_quota_inode; | |
b3b94faa | 716 | |
b3b94faa DT |
717 | /* StatFS stuff */ |
718 | ||
719 | spinlock_t sd_statfs_spin; | |
bd209cc0 AV |
720 | struct gfs2_statfs_change_host sd_statfs_master; |
721 | struct gfs2_statfs_change_host sd_statfs_local; | |
3d3c10f2 | 722 | int sd_statfs_force_sync; |
b3b94faa DT |
723 | |
724 | /* Resource group stuff */ | |
725 | ||
cf45b752 | 726 | int sd_rindex_uptodate; |
b3b94faa | 727 | spinlock_t sd_rindex_spin; |
7c9ca621 | 728 | struct rb_root sd_rindex_tree; |
b3b94faa | 729 | unsigned int sd_rgrps; |
3921120e | 730 | unsigned int sd_max_rg_data; |
b3b94faa DT |
731 | |
732 | /* Journal index stuff */ | |
733 | ||
734 | struct list_head sd_jindex_list; | |
735 | spinlock_t sd_jindex_spin; | |
f55ab26a | 736 | struct mutex sd_jindex_mutex; |
b3b94faa | 737 | unsigned int sd_journals; |
b3b94faa DT |
738 | |
739 | struct gfs2_jdesc *sd_jdesc; | |
740 | struct gfs2_holder sd_journal_gh; | |
741 | struct gfs2_holder sd_jinode_gh; | |
742 | ||
b3b94faa | 743 | struct gfs2_holder sd_sc_gh; |
b3b94faa DT |
744 | struct gfs2_holder sd_qc_gh; |
745 | ||
0e48e055 BP |
746 | struct completion sd_journal_ready; |
747 | ||
b3b94faa DT |
748 | /* Daemon stuff */ |
749 | ||
b3b94faa DT |
750 | struct task_struct *sd_logd_process; |
751 | struct task_struct *sd_quotad_process; | |
b3b94faa | 752 | |
b3b94faa DT |
753 | /* Quota stuff */ |
754 | ||
755 | struct list_head sd_quota_list; | |
756 | atomic_t sd_quota_count; | |
f55ab26a | 757 | struct mutex sd_quota_mutex; |
e46c772d | 758 | struct mutex sd_quota_sync_mutex; |
37b2c837 | 759 | wait_queue_head_t sd_quota_wait; |
813e0c46 SW |
760 | struct list_head sd_trunc_list; |
761 | spinlock_t sd_trunc_lock; | |
b3b94faa DT |
762 | |
763 | unsigned int sd_quota_slots; | |
ee2411a8 | 764 | unsigned long *sd_quota_bitmap; |
2d9e7230 | 765 | spinlock_t sd_bitmap_lock; |
b3b94faa | 766 | |
cd915493 | 767 | u64 sd_quota_sync_gen; |
b3b94faa DT |
768 | |
769 | /* Log stuff */ | |
770 | ||
70d4ee94 SW |
771 | struct address_space sd_aspace; |
772 | ||
b3b94faa | 773 | spinlock_t sd_log_lock; |
b3b94faa | 774 | |
16ca9412 | 775 | struct gfs2_trans *sd_log_tr; |
b3b94faa | 776 | unsigned int sd_log_blks_reserved; |
2e95e3f6 | 777 | int sd_log_commited_revoke; |
b3b94faa | 778 | |
5e687eac | 779 | atomic_t sd_log_pinned; |
b3b94faa | 780 | unsigned int sd_log_num_revoke; |
f42faf4f | 781 | |
b3b94faa | 782 | struct list_head sd_log_le_revoke; |
d7b616e2 | 783 | struct list_head sd_log_le_ordered; |
45138990 | 784 | spinlock_t sd_ordered_lock; |
b3b94faa | 785 | |
5e687eac BM |
786 | atomic_t sd_log_thresh1; |
787 | atomic_t sd_log_thresh2; | |
fd041f0b | 788 | atomic_t sd_log_blks_free; |
5e687eac BM |
789 | wait_queue_head_t sd_log_waitq; |
790 | wait_queue_head_t sd_logd_waitq; | |
b3b94faa | 791 | |
cd915493 | 792 | u64 sd_log_sequence; |
b3b94faa DT |
793 | unsigned int sd_log_head; |
794 | unsigned int sd_log_tail; | |
b3b94faa DT |
795 | int sd_log_idle; |
796 | ||
484adff8 | 797 | struct rw_semaphore sd_log_flush_lock; |
16615be1 | 798 | atomic_t sd_log_in_flight; |
e8c92ed7 | 799 | struct bio *sd_log_bio; |
16615be1 | 800 | wait_queue_head_t sd_log_flush_wait; |
e8c92ed7 | 801 | int sd_log_error; |
b3b94faa | 802 | |
2e60d768 BM |
803 | atomic_t sd_reserving_log; |
804 | wait_queue_head_t sd_reserving_log_wait; | |
805 | ||
b3b94faa | 806 | unsigned int sd_log_flush_head; |
cd915493 | 807 | u64 sd_log_flush_wrapped; |
b3b94faa | 808 | |
d6a079e8 | 809 | spinlock_t sd_ail_lock; |
b3b94faa DT |
810 | struct list_head sd_ail1_list; |
811 | struct list_head sd_ail2_list; | |
b3b94faa | 812 | |
b3b94faa | 813 | /* For quiescing the filesystem */ |
b3b94faa | 814 | struct gfs2_holder sd_freeze_gh; |
2e60d768 BM |
815 | atomic_t sd_freeze_state; |
816 | struct mutex sd_freeze_mutex; | |
b3b94faa | 817 | |
b3b94faa DT |
818 | char sd_fsname[GFS2_FSNAME_LEN]; |
819 | char sd_table_name[GFS2_FSNAME_LEN]; | |
820 | char sd_proto_name[GFS2_FSNAME_LEN]; | |
821 | ||
822 | /* Debugging crud */ | |
823 | ||
824 | unsigned long sd_last_warning; | |
5f882096 | 825 | struct dentry *debugfs_dir; /* debugfs directory */ |
a245769f SW |
826 | struct dentry *debugfs_dentry_glocks; |
827 | struct dentry *debugfs_dentry_glstats; | |
828 | struct dentry *debugfs_dentry_sbstats; | |
b3b94faa DT |
829 | }; |
830 | ||
a245769f SW |
831 | static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) |
832 | { | |
833 | gl->gl_stats.stats[which]++; | |
834 | } | |
835 | ||
836 | static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) | |
837 | { | |
838 | const struct gfs2_sbd *sdp = gl->gl_sbd; | |
839 | preempt_disable(); | |
840 | this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; | |
841 | preempt_enable(); | |
842 | } | |
843 | ||
b3b94faa DT |
844 | #endif /* __INCORE_DOT_H__ */ |
845 |