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