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 #define GLOF_LRU 4 229 }; 230 231 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 }; 246 247 enum { 248 /* States */ 249 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 250 HIF_FIRST = 7, 251 HIF_WAIT = 10, 252 }; 253 254 struct gfs2_holder { 255 struct list_head gh_list; 256 257 struct gfs2_glock *gh_gl; 258 struct pid *gh_owner_pid; 259 unsigned int gh_state; 260 unsigned gh_flags; 261 262 int gh_error; 263 unsigned long gh_iflags; /* HIF_... */ 264 unsigned long gh_ip; 265 }; 266 267 /* Number of quota types we support */ 268 #define GFS2_MAXQUOTAS 2 269 270 /* 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 */ 282 283 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 284 struct rb_node rs_node; /* link to other block reservations */ 285 struct gfs2_rbm rs_rbm; /* Start of reservation */ 286 u32 rs_free; /* how many blocks are still free */ 287 u64 rs_inum; /* Inode number for reservation */ 288 289 /* ancillary quota stuff */ 290 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS]; 291 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 292 unsigned int rs_qa_qd_num; 293 }; 294 295 /* 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 { 305 u64 target; 306 u32 min_target; 307 u32 aflags; 308 u64 allowed; 309 }; 310 311 enum { 312 GLF_LOCK = 1, 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, 320 GLF_INITIAL = 10, 321 GLF_FROZEN = 11, 322 GLF_QUEUED = 12, 323 GLF_LRU = 13, 324 GLF_OBJECT = 14, /* Used only for tracing */ 325 GLF_BLOCKING = 15, 326 }; 327 328 struct gfs2_glock { 329 struct hlist_bl_node gl_list; 330 struct gfs2_sbd *gl_sbd; 331 unsigned long gl_flags; /* GLF_... */ 332 struct lm_lockname gl_name; 333 334 struct lockref gl_lockref; 335 #define gl_spin gl_lockref.lock 336 337 /* 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 */ 343 344 unsigned int gl_hash; 345 unsigned long gl_demote_time; /* time of first demote request */ 346 long gl_hold_time; 347 struct list_head gl_holders; 348 349 const struct gfs2_glock_operations *gl_ops; 350 ktime_t gl_dstamp; 351 struct gfs2_lkstats gl_stats; 352 struct dlm_lksb gl_lksb; 353 unsigned long gl_tchange; 354 void *gl_object; 355 356 struct list_head gl_lru; 357 struct list_head gl_ail_list; 358 atomic_t gl_ail_count; 359 atomic_t gl_revokes; 360 struct delayed_work gl_work; 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 }; 370 struct rcu_head gl_rcu; 371 }; 372 373 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 374 375 enum { 376 GIF_INVALID = 0, 377 GIF_QD_LOCKED = 1, 378 GIF_ALLOC_FAILED = 2, 379 GIF_SW_PAGED = 3, 380 GIF_ORDERED = 4, 381 GIF_FREE_VFS_INODE = 5, 382 }; 383 384 struct gfs2_inode { 385 struct inode i_inode; 386 u64 i_no_addr; 387 u64 i_no_formal_ino; 388 u64 i_generation; 389 u64 i_eattr; 390 unsigned long i_flags; /* GIF_... */ 391 struct gfs2_glock *i_gl; /* Move into i_gh? */ 392 struct gfs2_holder i_iopen_gh; 393 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 394 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 395 struct gfs2_rgrpd *i_rgd; 396 u64 i_goal; /* goal block for allocations */ 397 struct rw_semaphore i_rw_mutex; 398 struct list_head i_ordered; 399 struct list_head i_trunc_list; 400 __be64 *i_hash_cache; 401 u32 i_entries; 402 u32 i_diskflags; 403 u8 i_height; 404 u8 i_depth; 405 }; 406 407 /* 408 * Since i_inode is the first element of struct gfs2_inode, 409 * this is effectively a cast. 410 */ 411 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 412 { 413 return container_of(inode, struct gfs2_inode, i_inode); 414 } 415 416 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 417 { 418 return inode->i_sb->s_fs_info; 419 } 420 421 struct gfs2_file { 422 struct mutex f_fl_mutex; 423 struct gfs2_holder f_fl_gh; 424 }; 425 426 struct gfs2_revoke_replay { 427 struct list_head rr_list; 428 u64 rr_blkno; 429 unsigned int rr_where; 430 }; 431 432 enum { 433 QDF_CHANGE = 1, 434 QDF_LOCKED = 2, 435 QDF_REFRESH = 3, 436 QDF_QMSG_QUIET = 4, 437 }; 438 439 struct gfs2_quota_data { 440 struct hlist_bl_node qd_hlist; 441 struct list_head qd_list; 442 struct kqid qd_id; 443 struct gfs2_sbd *qd_sbd; 444 struct lockref qd_lockref; 445 struct list_head qd_lru; 446 unsigned qd_hash; 447 448 unsigned long qd_flags; /* QDF_... */ 449 450 s64 qd_change; 451 s64 qd_change_sync; 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; 462 463 u64 qd_sync_gen; 464 unsigned long qd_last_warn; 465 struct rcu_head qd_rcu; 466 }; 467 468 struct gfs2_trans { 469 unsigned long tr_ip; 470 471 unsigned int tr_blocks; 472 unsigned int tr_revokes; 473 unsigned int tr_reserved; 474 unsigned int tr_touched:1; 475 unsigned int tr_attached:1; 476 unsigned int tr_alloced:1; 477 478 unsigned int tr_num_buf_new; 479 unsigned int tr_num_databuf_new; 480 unsigned int tr_num_buf_rm; 481 unsigned int tr_num_databuf_rm; 482 unsigned int tr_num_revoke; 483 unsigned int tr_num_revoke_rm; 484 485 struct list_head tr_list; 486 struct list_head tr_databuf; 487 struct list_head tr_buf; 488 489 unsigned int tr_first; 490 struct list_head tr_ail1_list; 491 struct list_head tr_ail2_list; 492 }; 493 494 struct gfs2_journal_extent { 495 struct list_head list; 496 497 unsigned int lblock; /* First logical block */ 498 u64 dblock; /* First disk block */ 499 u64 blocks; 500 }; 501 502 struct gfs2_jdesc { 503 struct list_head jd_list; 504 struct list_head extent_list; 505 unsigned int nr_extents; 506 struct work_struct jd_work; 507 struct inode *jd_inode; 508 unsigned long jd_flags; 509 #define JDF_RECOVERY 1 510 unsigned int jd_jid; 511 unsigned int jd_blocks; 512 int jd_recover_error; 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; 521 522 }; 523 524 struct gfs2_statfs_change_host { 525 s64 sc_total; 526 s64 sc_free; 527 s64 sc_dinodes; 528 }; 529 530 #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 2 538 539 #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 3 544 545 struct gfs2_args { 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 */ 550 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 551 unsigned int ar_debug:1; /* Oops on errors */ 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 */ 557 unsigned int ar_discard:1; /* discard requests */ 558 unsigned int ar_errors:2; /* errors=withdraw | panic */ 559 unsigned int ar_nobarrier:1; /* do not send barriers */ 560 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 561 int ar_commit; /* Commit interval */ 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 */ 565 }; 566 567 struct gfs2_tune { 568 spinlock_t gt_spin; 569 570 unsigned int gt_logd_secs; 571 572 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 */ 575 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 576 unsigned int gt_new_files_jdata; 577 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 578 unsigned int gt_complain_secs; 579 unsigned int gt_statfs_quantum; 580 unsigned int gt_statfs_slow; 581 }; 582 583 enum { 584 SDF_JOURNAL_CHECKED = 0, 585 SDF_JOURNAL_LIVE = 1, 586 SDF_SHUTDOWN = 2, 587 SDF_NOBARRIERS = 3, 588 SDF_NORECOVERY = 4, 589 SDF_DEMOTE = 5, 590 SDF_NOJOURNALID = 6, 591 SDF_RORECOVERY = 7, /* read only recovery */ 592 SDF_SKIP_DLM_UNLOCK = 8, 593 }; 594 595 enum gfs2_freeze_state { 596 SFS_UNFROZEN = 0, 597 SFS_STARTING_FREEZE = 1, 598 SFS_FROZEN = 2, 599 }; 600 601 #define GFS2_FSNAME_LEN 256 602 603 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 }; 624 625 /* 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 { 635 int ls_jid; 636 unsigned int ls_first; 637 const struct lm_lockops *ls_ops; 638 dlm_lockspace_t *ls_dlm; 639 640 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} */ 647 char *ls_lvb_bits; 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 */ 657 }; 658 659 struct gfs2_pcpu_lkstats { 660 /* One struct for each glock type */ 661 struct gfs2_lkstats lkstats[10]; 662 }; 663 664 struct gfs2_sbd { 665 struct super_block *sd_vfs; 666 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 667 struct kobject sd_kobj; 668 unsigned long sd_flags; /* SDF_... */ 669 struct gfs2_sb_host sd_sb; 670 671 /* Constants computed on mount */ 672 673 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; 682 u32 sd_blocks_per_bitmap; 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 */ 685 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 686 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 687 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 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; 695 struct gfs2_holder sd_live_gh; 696 struct gfs2_glock *sd_rename_gl; 697 struct gfs2_glock *sd_freeze_gl; 698 struct work_struct sd_freeze_work; 699 wait_queue_head_t sd_glock_wait; 700 atomic_t sd_glock_disposal; 701 struct completion sd_locking_init; 702 struct completion sd_wdack; 703 struct delayed_work sd_control_work; 704 705 /* Inode Stuff */ 706 707 struct dentry *sd_master_dir; 708 struct dentry *sd_root_dir; 709 710 struct inode *sd_jindex; 711 struct inode *sd_statfs_inode; 712 struct inode *sd_sc_inode; 713 struct inode *sd_qc_inode; 714 struct inode *sd_rindex; 715 struct inode *sd_quota_inode; 716 717 /* StatFS stuff */ 718 719 spinlock_t sd_statfs_spin; 720 struct gfs2_statfs_change_host sd_statfs_master; 721 struct gfs2_statfs_change_host sd_statfs_local; 722 int sd_statfs_force_sync; 723 724 /* Resource group stuff */ 725 726 int sd_rindex_uptodate; 727 spinlock_t sd_rindex_spin; 728 struct rb_root sd_rindex_tree; 729 unsigned int sd_rgrps; 730 unsigned int sd_max_rg_data; 731 732 /* Journal index stuff */ 733 734 struct list_head sd_jindex_list; 735 spinlock_t sd_jindex_spin; 736 struct mutex sd_jindex_mutex; 737 unsigned int sd_journals; 738 739 struct gfs2_jdesc *sd_jdesc; 740 struct gfs2_holder sd_journal_gh; 741 struct gfs2_holder sd_jinode_gh; 742 743 struct gfs2_holder sd_sc_gh; 744 struct gfs2_holder sd_qc_gh; 745 746 struct completion sd_journal_ready; 747 748 /* Daemon stuff */ 749 750 struct task_struct *sd_logd_process; 751 struct task_struct *sd_quotad_process; 752 753 /* Quota stuff */ 754 755 struct list_head sd_quota_list; 756 atomic_t sd_quota_count; 757 struct mutex sd_quota_mutex; 758 struct mutex sd_quota_sync_mutex; 759 wait_queue_head_t sd_quota_wait; 760 struct list_head sd_trunc_list; 761 spinlock_t sd_trunc_lock; 762 763 unsigned int sd_quota_slots; 764 unsigned long *sd_quota_bitmap; 765 spinlock_t sd_bitmap_lock; 766 767 u64 sd_quota_sync_gen; 768 769 /* Log stuff */ 770 771 struct address_space sd_aspace; 772 773 spinlock_t sd_log_lock; 774 775 struct gfs2_trans *sd_log_tr; 776 unsigned int sd_log_blks_reserved; 777 int sd_log_commited_revoke; 778 779 atomic_t sd_log_pinned; 780 unsigned int sd_log_num_revoke; 781 782 struct list_head sd_log_le_revoke; 783 struct list_head sd_log_le_ordered; 784 spinlock_t sd_ordered_lock; 785 786 atomic_t sd_log_thresh1; 787 atomic_t sd_log_thresh2; 788 atomic_t sd_log_blks_free; 789 wait_queue_head_t sd_log_waitq; 790 wait_queue_head_t sd_logd_waitq; 791 792 u64 sd_log_sequence; 793 unsigned int sd_log_head; 794 unsigned int sd_log_tail; 795 int sd_log_idle; 796 797 struct rw_semaphore sd_log_flush_lock; 798 atomic_t sd_log_in_flight; 799 struct bio *sd_log_bio; 800 wait_queue_head_t sd_log_flush_wait; 801 int sd_log_error; 802 803 atomic_t sd_reserving_log; 804 wait_queue_head_t sd_reserving_log_wait; 805 806 unsigned int sd_log_flush_head; 807 u64 sd_log_flush_wrapped; 808 809 spinlock_t sd_ail_lock; 810 struct list_head sd_ail1_list; 811 struct list_head sd_ail2_list; 812 813 /* For quiescing the filesystem */ 814 struct gfs2_holder sd_freeze_gh; 815 atomic_t sd_freeze_state; 816 struct mutex sd_freeze_mutex; 817 818 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; 825 struct dentry *debugfs_dir; /* debugfs directory */ 826 struct dentry *debugfs_dentry_glocks; 827 struct dentry *debugfs_dentry_glstats; 828 struct dentry *debugfs_dentry_sbstats; 829 }; 830 831 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 } 843 844 #endif /* __INCORE_DOT_H__ */ 845 846