1 /* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. 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 7 * of the GNU General Public License version 2. 8 */ 9 10 #ifndef __INCORE_DOT_H__ 11 #define __INCORE_DOT_H__ 12 13 #include <linux/fs.h> 14 #include <linux/kobject.h> 15 #include <linux/workqueue.h> 16 #include <linux/dlm.h> 17 #include <linux/buffer_head.h> 18 #include <linux/rcupdate.h> 19 #include <linux/rculist_bl.h> 20 #include <linux/completion.h> 21 #include <linux/rbtree.h> 22 #include <linux/ktime.h> 23 #include <linux/percpu.h> 24 #include <linux/lockref.h> 25 26 #define DIO_WAIT 0x00000010 27 #define DIO_METADATA 0x00000020 28 29 struct gfs2_log_operations; 30 struct gfs2_bufdata; 31 struct gfs2_holder; 32 struct gfs2_glock; 33 struct gfs2_quota_data; 34 struct gfs2_trans; 35 struct gfs2_jdesc; 36 struct gfs2_sbd; 37 struct lm_lockops; 38 39 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); 40 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 49 /* 50 * Structure of operations that are associated with each 51 * type of element in the log. 52 */ 53 54 struct gfs2_log_operations { 55 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 56 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 57 void (*lo_before_scan) (struct gfs2_jdesc *jd, 58 struct gfs2_log_header_host *head, int pass); 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); 63 const char *lo_name; 64 }; 65 66 #define GBF_FULL 1 67 68 struct gfs2_bitmap { 69 struct buffer_head *bi_bh; 70 char *bi_clone; 71 unsigned long bi_flags; 72 u32 bi_offset; 73 u32 bi_start; 74 u32 bi_len; 75 u32 bi_blocks; 76 }; 77 78 struct gfs2_rgrpd { 79 struct rb_node rd_node; /* Link with superblock */ 80 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 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 */ 86 u32 rd_free; 87 u32 rd_reserved; /* number of blocks reserved */ 88 u32 rd_free_clone; 89 u32 rd_dinodes; 90 u64 rd_igeneration; 91 struct gfs2_bitmap *rd_bits; 92 struct gfs2_sbd *rd_sbd; 93 struct gfs2_rgrp_lvb *rd_rgl; 94 u32 rd_last_alloc; 95 u32 rd_flags; 96 u32 rd_extfail_pt; /* extent failure point */ 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_PREFERRED 0x80000000 /* This rgrp is preferred */ 101 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 102 spinlock_t rd_rsspin; /* protects reservation related vars */ 103 struct rb_root rd_rstree; /* multi-block reservation tree */ 104 }; 105 106 struct gfs2_rbm { 107 struct gfs2_rgrpd *rgd; 108 u32 offset; /* The offset is bitmap relative */ 109 int bii; /* Bitmap index */ 110 }; 111 112 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) 113 { 114 return rbm->rgd->rd_bits + rbm->bii; 115 } 116 117 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 118 { 119 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + 120 rbm->offset; 121 } 122 123 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 124 const struct gfs2_rbm *rbm2) 125 { 126 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && 127 (rbm1->offset == rbm2->offset); 128 } 129 130 enum gfs2_state_bits { 131 BH_Pinned = BH_PrivateStart, 132 BH_Escaped = BH_PrivateStart + 1, 133 BH_Zeronew = BH_PrivateStart + 2, 134 }; 135 136 BUFFER_FNS(Pinned, pinned) 137 TAS_BUFFER_FNS(Pinned, pinned) 138 BUFFER_FNS(Escaped, escaped) 139 TAS_BUFFER_FNS(Escaped, escaped) 140 BUFFER_FNS(Zeronew, zeronew) 141 TAS_BUFFER_FNS(Zeronew, zeronew) 142 143 struct gfs2_bufdata { 144 struct buffer_head *bd_bh; 145 struct gfs2_glock *bd_gl; 146 u64 bd_blkno; 147 148 struct list_head bd_list; 149 const struct gfs2_log_operations *bd_ops; 150 151 struct gfs2_trans *bd_tr; 152 struct list_head bd_ail_st_list; 153 struct list_head bd_ail_gl_list; 154 }; 155 156 /* 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 32 163 164 /* 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 */ 194 195 enum { 196 DFL_BLOCK_LOCKS = 0, 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, 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)) 213 214 215 struct gfs2_glock_operations { 216 void (*go_sync) (struct gfs2_glock *gl); 217 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 218 void (*go_inval) (struct gfs2_glock *gl, int flags); 219 int (*go_demote_ok) (const struct gfs2_glock *gl); 220 int (*go_lock) (struct gfs2_holder *gh); 221 void (*go_unlock) (struct gfs2_holder *gh); 222 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 223 void (*go_callback)(struct gfs2_glock *gl, bool remote); 224 const int go_type; 225 const unsigned long go_flags; 226 #define GLOF_ASPACE 1 227 #define GLOF_LVB 2 228 }; 229 230 enum { 231 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 232 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 233 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 234 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 235 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 236 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 237 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 238 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 239 GFS2_NR_LKSTATS 240 }; 241 242 struct gfs2_lkstats { 243 s64 stats[GFS2_NR_LKSTATS]; 244 }; 245 246 enum { 247 /* States */ 248 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 249 HIF_FIRST = 7, 250 HIF_WAIT = 10, 251 }; 252 253 struct gfs2_holder { 254 struct list_head gh_list; 255 256 struct gfs2_glock *gh_gl; 257 struct pid *gh_owner_pid; 258 unsigned int gh_state; 259 unsigned gh_flags; 260 261 int gh_error; 262 unsigned long gh_iflags; /* HIF_... */ 263 unsigned long gh_ip; 264 }; 265 266 /* Number of quota types we support */ 267 #define GFS2_MAXQUOTAS 2 268 269 /* Resource group multi-block reservation, in order of appearance: 270 271 Step 1. Function prepares to write, allocates a mb, sets the size hint. 272 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 273 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 274 Step 4. Bits are assigned from the rgrp based on either the reservation 275 or wherever it can. 276 */ 277 278 struct gfs2_blkreserv { 279 /* components used during write (step 1): */ 280 atomic_t rs_sizehint; /* hint of the write size */ 281 282 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 283 struct rb_node rs_node; /* link to other block reservations */ 284 struct gfs2_rbm rs_rbm; /* Start of reservation */ 285 u32 rs_free; /* how many blocks are still free */ 286 u64 rs_inum; /* Inode number for reservation */ 287 288 /* ancillary quota stuff */ 289 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS]; 290 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 291 unsigned int rs_qa_qd_num; 292 }; 293 294 /* 295 * Allocation parameters 296 * @target: The number of blocks we'd ideally like to allocate 297 * @aflags: The flags (e.g. Orlov flag) 298 * 299 * The intent is to gradually expand this structure over time in 300 * order to give more information, e.g. alignment, min extent size 301 * to the allocation code. 302 */ 303 struct gfs2_alloc_parms { 304 u32 target; 305 u32 aflags; 306 }; 307 308 enum { 309 GLF_LOCK = 1, 310 GLF_DEMOTE = 3, 311 GLF_PENDING_DEMOTE = 4, 312 GLF_DEMOTE_IN_PROGRESS = 5, 313 GLF_DIRTY = 6, 314 GLF_LFLUSH = 7, 315 GLF_INVALIDATE_IN_PROGRESS = 8, 316 GLF_REPLY_PENDING = 9, 317 GLF_INITIAL = 10, 318 GLF_FROZEN = 11, 319 GLF_QUEUED = 12, 320 GLF_LRU = 13, 321 GLF_OBJECT = 14, /* Used only for tracing */ 322 GLF_BLOCKING = 15, 323 }; 324 325 struct gfs2_glock { 326 struct hlist_bl_node gl_list; 327 struct gfs2_sbd *gl_sbd; 328 unsigned long gl_flags; /* GLF_... */ 329 struct lm_lockname gl_name; 330 331 struct lockref gl_lockref; 332 #define gl_spin gl_lockref.lock 333 334 /* State fields protected by gl_spin */ 335 unsigned int gl_state:2, /* Current state */ 336 gl_target:2, /* Target state */ 337 gl_demote_state:2, /* State requested by remote node */ 338 gl_req:2, /* State in last dlm request */ 339 gl_reply:8; /* Last reply from the dlm */ 340 341 unsigned int gl_hash; 342 unsigned long gl_demote_time; /* time of first demote request */ 343 long gl_hold_time; 344 struct list_head gl_holders; 345 346 const struct gfs2_glock_operations *gl_ops; 347 ktime_t gl_dstamp; 348 struct gfs2_lkstats gl_stats; 349 struct dlm_lksb gl_lksb; 350 unsigned long gl_tchange; 351 void *gl_object; 352 353 struct list_head gl_lru; 354 struct list_head gl_ail_list; 355 atomic_t gl_ail_count; 356 atomic_t gl_revokes; 357 struct delayed_work gl_work; 358 union { 359 /* For inode and iopen glocks only */ 360 struct work_struct gl_delete; 361 /* For rgrp glocks only */ 362 struct { 363 loff_t start; 364 loff_t end; 365 } gl_vm; 366 }; 367 struct rcu_head gl_rcu; 368 }; 369 370 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 371 372 enum { 373 GIF_INVALID = 0, 374 GIF_QD_LOCKED = 1, 375 GIF_ALLOC_FAILED = 2, 376 GIF_SW_PAGED = 3, 377 GIF_ORDERED = 4, 378 GIF_FREE_VFS_INODE = 5, 379 }; 380 381 struct gfs2_inode { 382 struct inode i_inode; 383 u64 i_no_addr; 384 u64 i_no_formal_ino; 385 u64 i_generation; 386 u64 i_eattr; 387 unsigned long i_flags; /* GIF_... */ 388 struct gfs2_glock *i_gl; /* Move into i_gh? */ 389 struct gfs2_holder i_iopen_gh; 390 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 391 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 392 struct gfs2_rgrpd *i_rgd; 393 u64 i_goal; /* goal block for allocations */ 394 struct rw_semaphore i_rw_mutex; 395 struct list_head i_ordered; 396 struct list_head i_trunc_list; 397 __be64 *i_hash_cache; 398 u32 i_entries; 399 u32 i_diskflags; 400 u8 i_height; 401 u8 i_depth; 402 }; 403 404 /* 405 * Since i_inode is the first element of struct gfs2_inode, 406 * this is effectively a cast. 407 */ 408 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 409 { 410 return container_of(inode, struct gfs2_inode, i_inode); 411 } 412 413 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 414 { 415 return inode->i_sb->s_fs_info; 416 } 417 418 struct gfs2_file { 419 struct mutex f_fl_mutex; 420 struct gfs2_holder f_fl_gh; 421 }; 422 423 struct gfs2_revoke_replay { 424 struct list_head rr_list; 425 u64 rr_blkno; 426 unsigned int rr_where; 427 }; 428 429 enum { 430 QDF_CHANGE = 1, 431 QDF_LOCKED = 2, 432 QDF_REFRESH = 3, 433 }; 434 435 struct gfs2_quota_data { 436 struct hlist_bl_node qd_hlist; 437 struct list_head qd_list; 438 struct kqid qd_id; 439 struct gfs2_sbd *qd_sbd; 440 struct lockref qd_lockref; 441 struct list_head qd_lru; 442 unsigned qd_hash; 443 444 unsigned long qd_flags; /* QDF_... */ 445 446 s64 qd_change; 447 s64 qd_change_sync; 448 449 unsigned int qd_slot; 450 unsigned int qd_slot_count; 451 452 struct buffer_head *qd_bh; 453 struct gfs2_quota_change *qd_bh_qc; 454 unsigned int qd_bh_count; 455 456 struct gfs2_glock *qd_gl; 457 struct gfs2_quota_lvb qd_qb; 458 459 u64 qd_sync_gen; 460 unsigned long qd_last_warn; 461 struct rcu_head qd_rcu; 462 }; 463 464 struct gfs2_trans { 465 unsigned long tr_ip; 466 467 unsigned int tr_blocks; 468 unsigned int tr_revokes; 469 unsigned int tr_reserved; 470 unsigned int tr_touched:1; 471 unsigned int tr_attached:1; 472 unsigned int tr_alloced:1; 473 474 unsigned int tr_num_buf_new; 475 unsigned int tr_num_databuf_new; 476 unsigned int tr_num_buf_rm; 477 unsigned int tr_num_databuf_rm; 478 unsigned int tr_num_revoke; 479 unsigned int tr_num_revoke_rm; 480 481 struct list_head tr_list; 482 struct list_head tr_databuf; 483 struct list_head tr_buf; 484 485 unsigned int tr_first; 486 struct list_head tr_ail1_list; 487 struct list_head tr_ail2_list; 488 }; 489 490 struct gfs2_journal_extent { 491 struct list_head list; 492 493 unsigned int lblock; /* First logical block */ 494 u64 dblock; /* First disk block */ 495 u64 blocks; 496 }; 497 498 struct gfs2_jdesc { 499 struct list_head jd_list; 500 struct list_head extent_list; 501 unsigned int nr_extents; 502 struct work_struct jd_work; 503 struct inode *jd_inode; 504 unsigned long jd_flags; 505 #define JDF_RECOVERY 1 506 unsigned int jd_jid; 507 unsigned int jd_blocks; 508 int jd_recover_error; 509 /* Replay stuff */ 510 511 unsigned int jd_found_blocks; 512 unsigned int jd_found_revokes; 513 unsigned int jd_replayed_blocks; 514 515 struct list_head jd_revoke_list; 516 unsigned int jd_replay_tail; 517 518 }; 519 520 struct gfs2_statfs_change_host { 521 s64 sc_total; 522 s64 sc_free; 523 s64 sc_dinodes; 524 }; 525 526 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 527 #define GFS2_QUOTA_OFF 0 528 #define GFS2_QUOTA_ACCOUNT 1 529 #define GFS2_QUOTA_ON 2 530 531 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 532 #define GFS2_DATA_WRITEBACK 1 533 #define GFS2_DATA_ORDERED 2 534 535 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 536 #define GFS2_ERRORS_WITHDRAW 0 537 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 538 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 539 #define GFS2_ERRORS_PANIC 3 540 541 struct gfs2_args { 542 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 543 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 544 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 545 unsigned int ar_spectator:1; /* Don't get a journal */ 546 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 547 unsigned int ar_debug:1; /* Oops on errors */ 548 unsigned int ar_posix_acl:1; /* Enable posix acls */ 549 unsigned int ar_quota:2; /* off/account/on */ 550 unsigned int ar_suiddir:1; /* suiddir support */ 551 unsigned int ar_data:2; /* ordered/writeback */ 552 unsigned int ar_meta:1; /* mount metafs */ 553 unsigned int ar_discard:1; /* discard requests */ 554 unsigned int ar_errors:2; /* errors=withdraw | panic */ 555 unsigned int ar_nobarrier:1; /* do not send barriers */ 556 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 557 int ar_commit; /* Commit interval */ 558 int ar_statfs_quantum; /* The fast statfs interval */ 559 int ar_quota_quantum; /* The quota interval */ 560 int ar_statfs_percent; /* The % change to force sync */ 561 }; 562 563 struct gfs2_tune { 564 spinlock_t gt_spin; 565 566 unsigned int gt_logd_secs; 567 568 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 569 unsigned int gt_quota_scale_num; /* Numerator */ 570 unsigned int gt_quota_scale_den; /* Denominator */ 571 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 572 unsigned int gt_new_files_jdata; 573 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 574 unsigned int gt_complain_secs; 575 unsigned int gt_statfs_quantum; 576 unsigned int gt_statfs_slow; 577 }; 578 579 enum { 580 SDF_JOURNAL_CHECKED = 0, 581 SDF_JOURNAL_LIVE = 1, 582 SDF_SHUTDOWN = 2, 583 SDF_NOBARRIERS = 3, 584 SDF_NORECOVERY = 4, 585 SDF_DEMOTE = 5, 586 SDF_NOJOURNALID = 6, 587 SDF_RORECOVERY = 7, /* read only recovery */ 588 SDF_SKIP_DLM_UNLOCK = 8, 589 }; 590 591 enum gfs2_freeze_state { 592 SFS_UNFROZEN = 0, 593 SFS_STARTING_FREEZE = 1, 594 SFS_FROZEN = 2, 595 }; 596 597 #define GFS2_FSNAME_LEN 256 598 599 struct gfs2_inum_host { 600 u64 no_formal_ino; 601 u64 no_addr; 602 }; 603 604 struct gfs2_sb_host { 605 u32 sb_magic; 606 u32 sb_type; 607 u32 sb_format; 608 609 u32 sb_fs_format; 610 u32 sb_multihost_format; 611 u32 sb_bsize; 612 u32 sb_bsize_shift; 613 614 struct gfs2_inum_host sb_master_dir; 615 struct gfs2_inum_host sb_root_dir; 616 617 char sb_lockproto[GFS2_LOCKNAME_LEN]; 618 char sb_locktable[GFS2_LOCKNAME_LEN]; 619 }; 620 621 /* 622 * lm_mount() return values 623 * 624 * ls_jid - the journal ID this node should use 625 * ls_first - this node is the first to mount the file system 626 * ls_lockspace - lock module's context for this file system 627 * ls_ops - lock module's functions 628 */ 629 630 struct lm_lockstruct { 631 int ls_jid; 632 unsigned int ls_first; 633 const struct lm_lockops *ls_ops; 634 dlm_lockspace_t *ls_dlm; 635 636 int ls_recover_jid_done; /* These two are deprecated, */ 637 int ls_recover_jid_status; /* used previously by gfs_controld */ 638 639 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 640 struct dlm_lksb ls_control_lksb; /* control_lock */ 641 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 642 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 643 char *ls_lvb_bits; 644 645 spinlock_t ls_recover_spin; /* protects following fields */ 646 unsigned long ls_recover_flags; /* DFL_ */ 647 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 648 uint32_t ls_recover_start; /* gen in last recover_done cb */ 649 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 650 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 651 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 652 uint32_t *ls_recover_result; /* result of last jid recovery */ 653 }; 654 655 struct gfs2_pcpu_lkstats { 656 /* One struct for each glock type */ 657 struct gfs2_lkstats lkstats[10]; 658 }; 659 660 struct gfs2_sbd { 661 struct super_block *sd_vfs; 662 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 663 struct kobject sd_kobj; 664 unsigned long sd_flags; /* SDF_... */ 665 struct gfs2_sb_host sd_sb; 666 667 /* Constants computed on mount */ 668 669 u32 sd_fsb2bb; 670 u32 sd_fsb2bb_shift; 671 u32 sd_diptrs; /* Number of pointers in a dinode */ 672 u32 sd_inptrs; /* Number of pointers in a indirect block */ 673 u32 sd_jbsize; /* Size of a journaled data block */ 674 u32 sd_hash_bsize; /* sizeof(exhash block) */ 675 u32 sd_hash_bsize_shift; 676 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 677 u32 sd_qc_per_block; 678 u32 sd_blocks_per_bitmap; 679 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 680 u32 sd_max_height; /* Max height of a file's metadata tree */ 681 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 682 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 683 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 684 685 struct gfs2_args sd_args; /* Mount arguments */ 686 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 687 688 /* Lock Stuff */ 689 690 struct lm_lockstruct sd_lockstruct; 691 struct gfs2_holder sd_live_gh; 692 struct gfs2_glock *sd_rename_gl; 693 struct gfs2_glock *sd_freeze_gl; 694 struct work_struct sd_freeze_work; 695 wait_queue_head_t sd_glock_wait; 696 atomic_t sd_glock_disposal; 697 struct completion sd_locking_init; 698 struct completion sd_wdack; 699 struct delayed_work sd_control_work; 700 701 /* Inode Stuff */ 702 703 struct dentry *sd_master_dir; 704 struct dentry *sd_root_dir; 705 706 struct inode *sd_jindex; 707 struct inode *sd_statfs_inode; 708 struct inode *sd_sc_inode; 709 struct inode *sd_qc_inode; 710 struct inode *sd_rindex; 711 struct inode *sd_quota_inode; 712 713 /* StatFS stuff */ 714 715 spinlock_t sd_statfs_spin; 716 struct gfs2_statfs_change_host sd_statfs_master; 717 struct gfs2_statfs_change_host sd_statfs_local; 718 int sd_statfs_force_sync; 719 720 /* Resource group stuff */ 721 722 int sd_rindex_uptodate; 723 spinlock_t sd_rindex_spin; 724 struct rb_root sd_rindex_tree; 725 unsigned int sd_rgrps; 726 unsigned int sd_max_rg_data; 727 728 /* Journal index stuff */ 729 730 struct list_head sd_jindex_list; 731 spinlock_t sd_jindex_spin; 732 struct mutex sd_jindex_mutex; 733 unsigned int sd_journals; 734 735 struct gfs2_jdesc *sd_jdesc; 736 struct gfs2_holder sd_journal_gh; 737 struct gfs2_holder sd_jinode_gh; 738 739 struct gfs2_holder sd_sc_gh; 740 struct gfs2_holder sd_qc_gh; 741 742 struct completion sd_journal_ready; 743 744 /* Daemon stuff */ 745 746 struct task_struct *sd_logd_process; 747 struct task_struct *sd_quotad_process; 748 749 /* Quota stuff */ 750 751 struct list_head sd_quota_list; 752 atomic_t sd_quota_count; 753 struct mutex sd_quota_mutex; 754 struct mutex sd_quota_sync_mutex; 755 wait_queue_head_t sd_quota_wait; 756 struct list_head sd_trunc_list; 757 spinlock_t sd_trunc_lock; 758 759 unsigned int sd_quota_slots; 760 unsigned long *sd_quota_bitmap; 761 spinlock_t sd_bitmap_lock; 762 763 u64 sd_quota_sync_gen; 764 765 /* Log stuff */ 766 767 struct address_space sd_aspace; 768 769 spinlock_t sd_log_lock; 770 771 struct gfs2_trans *sd_log_tr; 772 unsigned int sd_log_blks_reserved; 773 int sd_log_commited_revoke; 774 775 atomic_t sd_log_pinned; 776 unsigned int sd_log_num_revoke; 777 778 struct list_head sd_log_le_revoke; 779 struct list_head sd_log_le_ordered; 780 spinlock_t sd_ordered_lock; 781 782 atomic_t sd_log_thresh1; 783 atomic_t sd_log_thresh2; 784 atomic_t sd_log_blks_free; 785 wait_queue_head_t sd_log_waitq; 786 wait_queue_head_t sd_logd_waitq; 787 788 u64 sd_log_sequence; 789 unsigned int sd_log_head; 790 unsigned int sd_log_tail; 791 int sd_log_idle; 792 793 struct rw_semaphore sd_log_flush_lock; 794 atomic_t sd_log_in_flight; 795 struct bio *sd_log_bio; 796 wait_queue_head_t sd_log_flush_wait; 797 int sd_log_error; 798 799 atomic_t sd_reserving_log; 800 wait_queue_head_t sd_reserving_log_wait; 801 802 unsigned int sd_log_flush_head; 803 u64 sd_log_flush_wrapped; 804 805 spinlock_t sd_ail_lock; 806 struct list_head sd_ail1_list; 807 struct list_head sd_ail2_list; 808 809 /* For quiescing the filesystem */ 810 struct gfs2_holder sd_freeze_gh; 811 atomic_t sd_freeze_state; 812 struct mutex sd_freeze_mutex; 813 814 char sd_fsname[GFS2_FSNAME_LEN]; 815 char sd_table_name[GFS2_FSNAME_LEN]; 816 char sd_proto_name[GFS2_FSNAME_LEN]; 817 818 /* Debugging crud */ 819 820 unsigned long sd_last_warning; 821 struct dentry *debugfs_dir; /* debugfs directory */ 822 struct dentry *debugfs_dentry_glocks; 823 struct dentry *debugfs_dentry_glstats; 824 struct dentry *debugfs_dentry_sbstats; 825 }; 826 827 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 828 { 829 gl->gl_stats.stats[which]++; 830 } 831 832 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 833 { 834 const struct gfs2_sbd *sdp = gl->gl_sbd; 835 preempt_disable(); 836 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 837 preempt_enable(); 838 } 839 840 #endif /* __INCORE_DOT_H__ */ 841 842