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 #include <linux/rhashtable.h> 26 27 #define DIO_WAIT 0x00000010 28 #define DIO_METADATA 0x00000020 29 30 struct gfs2_log_operations; 31 struct gfs2_bufdata; 32 struct gfs2_holder; 33 struct gfs2_glock; 34 struct gfs2_quota_data; 35 struct gfs2_trans; 36 struct gfs2_jdesc; 37 struct gfs2_sbd; 38 struct lm_lockops; 39 40 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); 41 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 50 /* 51 * Structure of operations that are associated with each 52 * type of element in the log. 53 */ 54 55 struct gfs2_log_operations { 56 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 58 void (*lo_before_scan) (struct gfs2_jdesc *jd, 59 struct gfs2_log_header_host *head, int pass); 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); 64 const char *lo_name; 65 }; 66 67 #define GBF_FULL 1 68 69 struct gfs2_bitmap { 70 struct buffer_head *bi_bh; 71 char *bi_clone; 72 unsigned long bi_flags; 73 u32 bi_offset; 74 u32 bi_start; 75 u32 bi_len; 76 u32 bi_blocks; 77 }; 78 79 struct gfs2_rgrpd { 80 struct rb_node rd_node; /* Link with superblock */ 81 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 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 */ 87 u32 rd_free; 88 u32 rd_reserved; /* number of blocks reserved */ 89 u32 rd_free_clone; 90 u32 rd_dinodes; 91 u64 rd_igeneration; 92 struct gfs2_bitmap *rd_bits; 93 struct gfs2_sbd *rd_sbd; 94 struct gfs2_rgrp_lvb *rd_rgl; 95 u32 rd_last_alloc; 96 u32 rd_flags; 97 u32 rd_extfail_pt; /* extent failure point */ 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 */ 101 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ 102 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 103 spinlock_t rd_rsspin; /* protects reservation related vars */ 104 struct rb_root rd_rstree; /* multi-block reservation tree */ 105 }; 106 107 struct gfs2_rbm { 108 struct gfs2_rgrpd *rgd; 109 u32 offset; /* The offset is bitmap relative */ 110 int bii; /* Bitmap index */ 111 }; 112 113 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) 114 { 115 return rbm->rgd->rd_bits + rbm->bii; 116 } 117 118 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 119 { 120 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + 121 rbm->offset; 122 } 123 124 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 125 const struct gfs2_rbm *rbm2) 126 { 127 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && 128 (rbm1->offset == rbm2->offset); 129 } 130 131 enum gfs2_state_bits { 132 BH_Pinned = BH_PrivateStart, 133 BH_Escaped = BH_PrivateStart + 1, 134 BH_Zeronew = BH_PrivateStart + 2, 135 }; 136 137 BUFFER_FNS(Pinned, pinned) 138 TAS_BUFFER_FNS(Pinned, pinned) 139 BUFFER_FNS(Escaped, escaped) 140 TAS_BUFFER_FNS(Escaped, escaped) 141 BUFFER_FNS(Zeronew, zeronew) 142 TAS_BUFFER_FNS(Zeronew, zeronew) 143 144 struct gfs2_bufdata { 145 struct buffer_head *bd_bh; 146 struct gfs2_glock *bd_gl; 147 u64 bd_blkno; 148 149 struct list_head bd_list; 150 const struct gfs2_log_operations *bd_ops; 151 152 struct gfs2_trans *bd_tr; 153 struct list_head bd_ail_st_list; 154 struct list_head bd_ail_gl_list; 155 }; 156 157 /* 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 32 164 165 /* 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 */ 195 196 enum { 197 DFL_BLOCK_LOCKS = 0, 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, 204 }; 205 206 struct lm_lockname { 207 struct gfs2_sbd *ln_sbd; 208 u64 ln_number; 209 unsigned int ln_type; 210 }; 211 212 #define lm_name_equal(name1, name2) \ 213 (((name1)->ln_number == (name2)->ln_number) && \ 214 ((name1)->ln_type == (name2)->ln_type) && \ 215 ((name1)->ln_sbd == (name2)->ln_sbd)) 216 217 218 struct gfs2_glock_operations { 219 void (*go_sync) (struct gfs2_glock *gl); 220 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 221 void (*go_inval) (struct gfs2_glock *gl, int flags); 222 int (*go_demote_ok) (const struct gfs2_glock *gl); 223 int (*go_lock) (struct gfs2_holder *gh); 224 void (*go_unlock) (struct gfs2_holder *gh); 225 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 226 void (*go_callback)(struct gfs2_glock *gl, bool remote); 227 const int go_type; 228 const unsigned long go_flags; 229 #define GLOF_ASPACE 1 230 #define GLOF_LVB 2 231 #define GLOF_LRU 4 232 }; 233 234 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 { 247 u64 stats[GFS2_NR_LKSTATS]; 248 }; 249 250 enum { 251 /* States */ 252 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 253 HIF_FIRST = 7, 254 HIF_WAIT = 10, 255 }; 256 257 struct gfs2_holder { 258 struct list_head gh_list; 259 260 struct gfs2_glock *gh_gl; 261 struct pid *gh_owner_pid; 262 unsigned int gh_state; 263 unsigned gh_flags; 264 265 int gh_error; 266 unsigned long gh_iflags; /* HIF_... */ 267 unsigned long gh_ip; 268 }; 269 270 /* Number of quota types we support */ 271 #define GFS2_MAXQUOTAS 2 272 273 /* Resource group multi-block reservation, in order of appearance: 274 275 Step 1. Function prepares to write, allocates a mb, sets the size hint. 276 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 277 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 278 Step 4. Bits are assigned from the rgrp based on either the reservation 279 or wherever it can. 280 */ 281 282 struct gfs2_blkreserv { 283 /* components used during write (step 1): */ 284 atomic_t rs_sizehint; /* hint of the write size */ 285 286 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 287 struct rb_node rs_node; /* link to other block reservations */ 288 struct gfs2_rbm rs_rbm; /* Start of reservation */ 289 u32 rs_free; /* how many blocks are still free */ 290 u64 rs_inum; /* Inode number for reservation */ 291 292 /* ancillary quota stuff */ 293 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS]; 294 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 295 unsigned int rs_qa_qd_num; 296 }; 297 298 /* 299 * Allocation parameters 300 * @target: The number of blocks we'd ideally like to allocate 301 * @aflags: The flags (e.g. Orlov flag) 302 * 303 * The intent is to gradually expand this structure over time in 304 * order to give more information, e.g. alignment, min extent size 305 * to the allocation code. 306 */ 307 struct gfs2_alloc_parms { 308 u64 target; 309 u32 min_target; 310 u32 aflags; 311 u64 allowed; 312 }; 313 314 enum { 315 GLF_LOCK = 1, 316 GLF_DEMOTE = 3, 317 GLF_PENDING_DEMOTE = 4, 318 GLF_DEMOTE_IN_PROGRESS = 5, 319 GLF_DIRTY = 6, 320 GLF_LFLUSH = 7, 321 GLF_INVALIDATE_IN_PROGRESS = 8, 322 GLF_REPLY_PENDING = 9, 323 GLF_INITIAL = 10, 324 GLF_FROZEN = 11, 325 GLF_QUEUED = 12, 326 GLF_LRU = 13, 327 GLF_OBJECT = 14, /* Used only for tracing */ 328 GLF_BLOCKING = 15, 329 }; 330 331 struct gfs2_glock { 332 struct hlist_bl_node gl_list; 333 unsigned long gl_flags; /* GLF_... */ 334 struct lm_lockname gl_name; 335 336 struct lockref gl_lockref; 337 #define gl_spin gl_lockref.lock 338 339 /* State fields protected by gl_spin */ 340 unsigned int gl_state:2, /* Current state */ 341 gl_target:2, /* Target state */ 342 gl_demote_state:2, /* State requested by remote node */ 343 gl_req:2, /* State in last dlm request */ 344 gl_reply:8; /* Last reply from the dlm */ 345 346 unsigned long gl_demote_time; /* time of first demote request */ 347 long gl_hold_time; 348 struct list_head gl_holders; 349 350 const struct gfs2_glock_operations *gl_ops; 351 ktime_t gl_dstamp; 352 struct gfs2_lkstats gl_stats; 353 struct dlm_lksb gl_lksb; 354 unsigned long gl_tchange; 355 void *gl_object; 356 357 struct list_head gl_lru; 358 struct list_head gl_ail_list; 359 atomic_t gl_ail_count; 360 atomic_t gl_revokes; 361 struct delayed_work gl_work; 362 union { 363 /* For inode and iopen glocks only */ 364 struct work_struct gl_delete; 365 /* For rgrp glocks only */ 366 struct { 367 loff_t start; 368 loff_t end; 369 } gl_vm; 370 }; 371 struct rhash_head gl_node; 372 }; 373 374 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 375 376 enum { 377 GIF_INVALID = 0, 378 GIF_QD_LOCKED = 1, 379 GIF_ALLOC_FAILED = 2, 380 GIF_SW_PAGED = 3, 381 GIF_ORDERED = 4, 382 GIF_FREE_VFS_INODE = 5, 383 }; 384 385 struct gfs2_inode { 386 struct inode i_inode; 387 u64 i_no_addr; 388 u64 i_no_formal_ino; 389 u64 i_generation; 390 u64 i_eattr; 391 unsigned long i_flags; /* GIF_... */ 392 struct gfs2_glock *i_gl; /* Move into i_gh? */ 393 struct gfs2_holder i_iopen_gh; 394 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 395 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 396 struct gfs2_rgrpd *i_rgd; 397 u64 i_goal; /* goal block for allocations */ 398 struct rw_semaphore i_rw_mutex; 399 struct list_head i_ordered; 400 struct list_head i_trunc_list; 401 __be64 *i_hash_cache; 402 u32 i_entries; 403 u32 i_diskflags; 404 u8 i_height; 405 u8 i_depth; 406 }; 407 408 /* 409 * Since i_inode is the first element of struct gfs2_inode, 410 * this is effectively a cast. 411 */ 412 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 413 { 414 return container_of(inode, struct gfs2_inode, i_inode); 415 } 416 417 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 418 { 419 return inode->i_sb->s_fs_info; 420 } 421 422 struct gfs2_file { 423 struct mutex f_fl_mutex; 424 struct gfs2_holder f_fl_gh; 425 }; 426 427 struct gfs2_revoke_replay { 428 struct list_head rr_list; 429 u64 rr_blkno; 430 unsigned int rr_where; 431 }; 432 433 enum { 434 QDF_CHANGE = 1, 435 QDF_LOCKED = 2, 436 QDF_REFRESH = 3, 437 QDF_QMSG_QUIET = 4, 438 }; 439 440 struct gfs2_quota_data { 441 struct hlist_bl_node qd_hlist; 442 struct list_head qd_list; 443 struct kqid qd_id; 444 struct gfs2_sbd *qd_sbd; 445 struct lockref qd_lockref; 446 struct list_head qd_lru; 447 unsigned qd_hash; 448 449 unsigned long qd_flags; /* QDF_... */ 450 451 s64 qd_change; 452 s64 qd_change_sync; 453 454 unsigned int qd_slot; 455 unsigned int qd_slot_count; 456 457 struct buffer_head *qd_bh; 458 struct gfs2_quota_change *qd_bh_qc; 459 unsigned int qd_bh_count; 460 461 struct gfs2_glock *qd_gl; 462 struct gfs2_quota_lvb qd_qb; 463 464 u64 qd_sync_gen; 465 unsigned long qd_last_warn; 466 struct rcu_head qd_rcu; 467 }; 468 469 struct gfs2_trans { 470 unsigned long tr_ip; 471 472 unsigned int tr_blocks; 473 unsigned int tr_revokes; 474 unsigned int tr_reserved; 475 unsigned int tr_touched:1; 476 unsigned int tr_attached:1; 477 unsigned int tr_alloced:1; 478 479 unsigned int tr_num_buf_new; 480 unsigned int tr_num_databuf_new; 481 unsigned int tr_num_buf_rm; 482 unsigned int tr_num_databuf_rm; 483 unsigned int tr_num_revoke; 484 unsigned int tr_num_revoke_rm; 485 486 struct list_head tr_list; 487 struct list_head tr_databuf; 488 struct list_head tr_buf; 489 490 unsigned int tr_first; 491 struct list_head tr_ail1_list; 492 struct list_head tr_ail2_list; 493 }; 494 495 struct gfs2_journal_extent { 496 struct list_head list; 497 498 unsigned int lblock; /* First logical block */ 499 u64 dblock; /* First disk block */ 500 u64 blocks; 501 }; 502 503 struct gfs2_jdesc { 504 struct list_head jd_list; 505 struct list_head extent_list; 506 unsigned int nr_extents; 507 struct work_struct jd_work; 508 struct inode *jd_inode; 509 unsigned long jd_flags; 510 #define JDF_RECOVERY 1 511 unsigned int jd_jid; 512 unsigned int jd_blocks; 513 int jd_recover_error; 514 /* Replay stuff */ 515 516 unsigned int jd_found_blocks; 517 unsigned int jd_found_revokes; 518 unsigned int jd_replayed_blocks; 519 520 struct list_head jd_revoke_list; 521 unsigned int jd_replay_tail; 522 523 }; 524 525 struct gfs2_statfs_change_host { 526 s64 sc_total; 527 s64 sc_free; 528 s64 sc_dinodes; 529 }; 530 531 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 532 #define GFS2_QUOTA_OFF 0 533 #define GFS2_QUOTA_ACCOUNT 1 534 #define GFS2_QUOTA_ON 2 535 536 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 537 #define GFS2_DATA_WRITEBACK 1 538 #define GFS2_DATA_ORDERED 2 539 540 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 541 #define GFS2_ERRORS_WITHDRAW 0 542 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 543 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 544 #define GFS2_ERRORS_PANIC 3 545 546 struct gfs2_args { 547 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 548 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 549 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 550 unsigned int ar_spectator:1; /* Don't get a journal */ 551 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 552 unsigned int ar_debug:1; /* Oops on errors */ 553 unsigned int ar_posix_acl:1; /* Enable posix acls */ 554 unsigned int ar_quota:2; /* off/account/on */ 555 unsigned int ar_suiddir:1; /* suiddir support */ 556 unsigned int ar_data:2; /* ordered/writeback */ 557 unsigned int ar_meta:1; /* mount metafs */ 558 unsigned int ar_discard:1; /* discard requests */ 559 unsigned int ar_errors:2; /* errors=withdraw | panic */ 560 unsigned int ar_nobarrier:1; /* do not send barriers */ 561 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 562 int ar_commit; /* Commit interval */ 563 int ar_statfs_quantum; /* The fast statfs interval */ 564 int ar_quota_quantum; /* The quota interval */ 565 int ar_statfs_percent; /* The % change to force sync */ 566 }; 567 568 struct gfs2_tune { 569 spinlock_t gt_spin; 570 571 unsigned int gt_logd_secs; 572 573 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 574 unsigned int gt_quota_scale_num; /* Numerator */ 575 unsigned int gt_quota_scale_den; /* Denominator */ 576 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 577 unsigned int gt_new_files_jdata; 578 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 579 unsigned int gt_complain_secs; 580 unsigned int gt_statfs_quantum; 581 unsigned int gt_statfs_slow; 582 }; 583 584 enum { 585 SDF_JOURNAL_CHECKED = 0, 586 SDF_JOURNAL_LIVE = 1, 587 SDF_SHUTDOWN = 2, 588 SDF_NOBARRIERS = 3, 589 SDF_NORECOVERY = 4, 590 SDF_DEMOTE = 5, 591 SDF_NOJOURNALID = 6, 592 SDF_RORECOVERY = 7, /* read only recovery */ 593 SDF_SKIP_DLM_UNLOCK = 8, 594 }; 595 596 enum gfs2_freeze_state { 597 SFS_UNFROZEN = 0, 598 SFS_STARTING_FREEZE = 1, 599 SFS_FROZEN = 2, 600 }; 601 602 #define GFS2_FSNAME_LEN 256 603 604 struct gfs2_inum_host { 605 u64 no_formal_ino; 606 u64 no_addr; 607 }; 608 609 struct gfs2_sb_host { 610 u32 sb_magic; 611 u32 sb_type; 612 u32 sb_format; 613 614 u32 sb_fs_format; 615 u32 sb_multihost_format; 616 u32 sb_bsize; 617 u32 sb_bsize_shift; 618 619 struct gfs2_inum_host sb_master_dir; 620 struct gfs2_inum_host sb_root_dir; 621 622 char sb_lockproto[GFS2_LOCKNAME_LEN]; 623 char sb_locktable[GFS2_LOCKNAME_LEN]; 624 }; 625 626 /* 627 * lm_mount() return values 628 * 629 * ls_jid - the journal ID this node should use 630 * ls_first - this node is the first to mount the file system 631 * ls_lockspace - lock module's context for this file system 632 * ls_ops - lock module's functions 633 */ 634 635 struct lm_lockstruct { 636 int ls_jid; 637 unsigned int ls_first; 638 const struct lm_lockops *ls_ops; 639 dlm_lockspace_t *ls_dlm; 640 641 int ls_recover_jid_done; /* These two are deprecated, */ 642 int ls_recover_jid_status; /* used previously by gfs_controld */ 643 644 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 645 struct dlm_lksb ls_control_lksb; /* control_lock */ 646 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 647 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 648 char *ls_lvb_bits; 649 650 spinlock_t ls_recover_spin; /* protects following fields */ 651 unsigned long ls_recover_flags; /* DFL_ */ 652 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 653 uint32_t ls_recover_start; /* gen in last recover_done cb */ 654 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 655 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 656 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 657 uint32_t *ls_recover_result; /* result of last jid recovery */ 658 }; 659 660 struct gfs2_pcpu_lkstats { 661 /* One struct for each glock type */ 662 struct gfs2_lkstats lkstats[10]; 663 }; 664 665 struct gfs2_sbd { 666 struct super_block *sd_vfs; 667 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 668 struct kobject sd_kobj; 669 unsigned long sd_flags; /* SDF_... */ 670 struct gfs2_sb_host sd_sb; 671 672 /* Constants computed on mount */ 673 674 u32 sd_fsb2bb; 675 u32 sd_fsb2bb_shift; 676 u32 sd_diptrs; /* Number of pointers in a dinode */ 677 u32 sd_inptrs; /* Number of pointers in a indirect block */ 678 u32 sd_jbsize; /* Size of a journaled data block */ 679 u32 sd_hash_bsize; /* sizeof(exhash block) */ 680 u32 sd_hash_bsize_shift; 681 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 682 u32 sd_qc_per_block; 683 u32 sd_blocks_per_bitmap; 684 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 685 u32 sd_max_height; /* Max height of a file's metadata tree */ 686 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 687 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 688 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 689 690 struct gfs2_args sd_args; /* Mount arguments */ 691 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 692 693 /* Lock Stuff */ 694 695 struct lm_lockstruct sd_lockstruct; 696 struct gfs2_holder sd_live_gh; 697 struct gfs2_glock *sd_rename_gl; 698 struct gfs2_glock *sd_freeze_gl; 699 struct work_struct sd_freeze_work; 700 wait_queue_head_t sd_glock_wait; 701 atomic_t sd_glock_disposal; 702 struct completion sd_locking_init; 703 struct completion sd_wdack; 704 struct delayed_work sd_control_work; 705 706 /* Inode Stuff */ 707 708 struct dentry *sd_master_dir; 709 struct dentry *sd_root_dir; 710 711 struct inode *sd_jindex; 712 struct inode *sd_statfs_inode; 713 struct inode *sd_sc_inode; 714 struct inode *sd_qc_inode; 715 struct inode *sd_rindex; 716 struct inode *sd_quota_inode; 717 718 /* StatFS stuff */ 719 720 spinlock_t sd_statfs_spin; 721 struct gfs2_statfs_change_host sd_statfs_master; 722 struct gfs2_statfs_change_host sd_statfs_local; 723 int sd_statfs_force_sync; 724 725 /* Resource group stuff */ 726 727 int sd_rindex_uptodate; 728 spinlock_t sd_rindex_spin; 729 struct rb_root sd_rindex_tree; 730 unsigned int sd_rgrps; 731 unsigned int sd_max_rg_data; 732 733 /* Journal index stuff */ 734 735 struct list_head sd_jindex_list; 736 spinlock_t sd_jindex_spin; 737 struct mutex sd_jindex_mutex; 738 unsigned int sd_journals; 739 740 struct gfs2_jdesc *sd_jdesc; 741 struct gfs2_holder sd_journal_gh; 742 struct gfs2_holder sd_jinode_gh; 743 744 struct gfs2_holder sd_sc_gh; 745 struct gfs2_holder sd_qc_gh; 746 747 struct completion sd_journal_ready; 748 749 /* Daemon stuff */ 750 751 struct task_struct *sd_logd_process; 752 struct task_struct *sd_quotad_process; 753 754 /* Quota stuff */ 755 756 struct list_head sd_quota_list; 757 atomic_t sd_quota_count; 758 struct mutex sd_quota_mutex; 759 struct mutex sd_quota_sync_mutex; 760 wait_queue_head_t sd_quota_wait; 761 struct list_head sd_trunc_list; 762 spinlock_t sd_trunc_lock; 763 764 unsigned int sd_quota_slots; 765 unsigned long *sd_quota_bitmap; 766 spinlock_t sd_bitmap_lock; 767 768 u64 sd_quota_sync_gen; 769 770 /* Log stuff */ 771 772 struct address_space sd_aspace; 773 774 spinlock_t sd_log_lock; 775 776 struct gfs2_trans *sd_log_tr; 777 unsigned int sd_log_blks_reserved; 778 int sd_log_commited_revoke; 779 780 atomic_t sd_log_pinned; 781 unsigned int sd_log_num_revoke; 782 783 struct list_head sd_log_le_revoke; 784 struct list_head sd_log_le_ordered; 785 spinlock_t sd_ordered_lock; 786 787 atomic_t sd_log_thresh1; 788 atomic_t sd_log_thresh2; 789 atomic_t sd_log_blks_free; 790 wait_queue_head_t sd_log_waitq; 791 wait_queue_head_t sd_logd_waitq; 792 793 u64 sd_log_sequence; 794 unsigned int sd_log_head; 795 unsigned int sd_log_tail; 796 int sd_log_idle; 797 798 struct rw_semaphore sd_log_flush_lock; 799 atomic_t sd_log_in_flight; 800 struct bio *sd_log_bio; 801 wait_queue_head_t sd_log_flush_wait; 802 int sd_log_error; 803 804 atomic_t sd_reserving_log; 805 wait_queue_head_t sd_reserving_log_wait; 806 807 unsigned int sd_log_flush_head; 808 u64 sd_log_flush_wrapped; 809 810 spinlock_t sd_ail_lock; 811 struct list_head sd_ail1_list; 812 struct list_head sd_ail2_list; 813 814 /* For quiescing the filesystem */ 815 struct gfs2_holder sd_freeze_gh; 816 atomic_t sd_freeze_state; 817 struct mutex sd_freeze_mutex; 818 819 char sd_fsname[GFS2_FSNAME_LEN]; 820 char sd_table_name[GFS2_FSNAME_LEN]; 821 char sd_proto_name[GFS2_FSNAME_LEN]; 822 823 /* Debugging crud */ 824 825 unsigned long sd_last_warning; 826 struct dentry *debugfs_dir; /* debugfs directory */ 827 struct dentry *debugfs_dentry_glocks; 828 struct dentry *debugfs_dentry_glstats; 829 struct dentry *debugfs_dentry_sbstats; 830 }; 831 832 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 833 { 834 gl->gl_stats.stats[which]++; 835 } 836 837 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 838 { 839 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 840 preempt_disable(); 841 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 842 preempt_enable(); 843 } 844 845 #endif /* __INCORE_DOT_H__ */ 846 847