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); 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 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 97 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 98 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 99 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 100 spinlock_t rd_rsspin; /* protects reservation related vars */ 101 struct rb_root rd_rstree; /* multi-block reservation tree */ 102 }; 103 104 struct gfs2_rbm { 105 struct gfs2_rgrpd *rgd; 106 u32 offset; /* The offset is bitmap relative */ 107 int bii; /* Bitmap index */ 108 }; 109 110 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) 111 { 112 return rbm->rgd->rd_bits + rbm->bii; 113 } 114 115 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 116 { 117 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + 118 rbm->offset; 119 } 120 121 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 122 const struct gfs2_rbm *rbm2) 123 { 124 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && 125 (rbm1->offset == rbm2->offset); 126 } 127 128 enum gfs2_state_bits { 129 BH_Pinned = BH_PrivateStart, 130 BH_Escaped = BH_PrivateStart + 1, 131 BH_Zeronew = BH_PrivateStart + 2, 132 }; 133 134 BUFFER_FNS(Pinned, pinned) 135 TAS_BUFFER_FNS(Pinned, pinned) 136 BUFFER_FNS(Escaped, escaped) 137 TAS_BUFFER_FNS(Escaped, escaped) 138 BUFFER_FNS(Zeronew, zeronew) 139 TAS_BUFFER_FNS(Zeronew, zeronew) 140 141 struct gfs2_bufdata { 142 struct buffer_head *bd_bh; 143 struct gfs2_glock *bd_gl; 144 u64 bd_blkno; 145 146 struct list_head bd_list; 147 const struct gfs2_log_operations *bd_ops; 148 149 struct gfs2_trans *bd_tr; 150 struct list_head bd_ail_st_list; 151 struct list_head bd_ail_gl_list; 152 }; 153 154 /* 155 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 156 * prefix of lock_dlm_ gets awkward. 157 */ 158 159 #define GDLM_STRNAME_BYTES 25 160 #define GDLM_LVB_SIZE 32 161 162 /* 163 * ls_recover_flags: 164 * 165 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 166 * held by failed nodes whose journals need recovery. Those locks should 167 * only be used for journal recovery until the journal recovery is done. 168 * This is set by the dlm recover_prep callback and cleared by the 169 * gfs2_control thread when journal recovery is complete. To avoid 170 * races between recover_prep setting and gfs2_control clearing, recover_spin 171 * is held while changing this bit and reading/writing recover_block 172 * and recover_start. 173 * 174 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 175 * 176 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 177 * recovery of all journals before allowing other nodes to mount the fs. 178 * This is cleared when FIRST_MOUNT_DONE is set. 179 * 180 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 181 * recovery of all journals, and now allows other nodes to mount the fs. 182 * 183 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 184 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 185 * control clearing BLOCK_LOCKS for further recoveries. 186 * 187 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 188 * 189 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 190 * and recover_done(), i.e. set while recover_block == recover_start. 191 */ 192 193 enum { 194 DFL_BLOCK_LOCKS = 0, 195 DFL_NO_DLM_OPS = 1, 196 DFL_FIRST_MOUNT = 2, 197 DFL_FIRST_MOUNT_DONE = 3, 198 DFL_MOUNT_DONE = 4, 199 DFL_UNMOUNT = 5, 200 DFL_DLM_RECOVERY = 6, 201 }; 202 203 struct lm_lockname { 204 u64 ln_number; 205 unsigned int ln_type; 206 }; 207 208 #define lm_name_equal(name1, name2) \ 209 (((name1)->ln_number == (name2)->ln_number) && \ 210 ((name1)->ln_type == (name2)->ln_type)) 211 212 213 struct gfs2_glock_operations { 214 void (*go_sync) (struct gfs2_glock *gl); 215 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 216 void (*go_inval) (struct gfs2_glock *gl, int flags); 217 int (*go_demote_ok) (const struct gfs2_glock *gl); 218 int (*go_lock) (struct gfs2_holder *gh); 219 void (*go_unlock) (struct gfs2_holder *gh); 220 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 221 void (*go_callback)(struct gfs2_glock *gl, bool remote); 222 const int go_type; 223 const unsigned long go_flags; 224 #define GLOF_ASPACE 1 225 #define GLOF_LVB 2 226 }; 227 228 enum { 229 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 230 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 231 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 232 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 233 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 234 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 235 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 236 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 237 GFS2_NR_LKSTATS 238 }; 239 240 struct gfs2_lkstats { 241 s64 stats[GFS2_NR_LKSTATS]; 242 }; 243 244 enum { 245 /* States */ 246 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 247 HIF_FIRST = 7, 248 HIF_WAIT = 10, 249 }; 250 251 struct gfs2_holder { 252 struct list_head gh_list; 253 254 struct gfs2_glock *gh_gl; 255 struct pid *gh_owner_pid; 256 unsigned int gh_state; 257 unsigned gh_flags; 258 259 int gh_error; 260 unsigned long gh_iflags; /* HIF_... */ 261 unsigned long gh_ip; 262 }; 263 264 /* Resource group multi-block reservation, in order of appearance: 265 266 Step 1. Function prepares to write, allocates a mb, sets the size hint. 267 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 268 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 269 Step 4. Bits are assigned from the rgrp based on either the reservation 270 or wherever it can. 271 */ 272 273 struct gfs2_blkreserv { 274 /* components used during write (step 1): */ 275 atomic_t rs_sizehint; /* hint of the write size */ 276 277 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 278 struct rb_node rs_node; /* link to other block reservations */ 279 struct gfs2_rbm rs_rbm; /* Start of reservation */ 280 u32 rs_free; /* how many blocks are still free */ 281 u64 rs_inum; /* Inode number for reservation */ 282 283 /* ancillary quota stuff */ 284 struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; 285 struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; 286 unsigned int rs_qa_qd_num; 287 }; 288 289 /* 290 * Allocation parameters 291 * @target: The number of blocks we'd ideally like to allocate 292 * @aflags: The flags (e.g. Orlov flag) 293 * 294 * The intent is to gradually expand this structure over time in 295 * order to give more information, e.g. alignment, min extent size 296 * to the allocation code. 297 */ 298 struct gfs2_alloc_parms { 299 u32 target; 300 u32 aflags; 301 }; 302 303 enum { 304 GLF_LOCK = 1, 305 GLF_DEMOTE = 3, 306 GLF_PENDING_DEMOTE = 4, 307 GLF_DEMOTE_IN_PROGRESS = 5, 308 GLF_DIRTY = 6, 309 GLF_LFLUSH = 7, 310 GLF_INVALIDATE_IN_PROGRESS = 8, 311 GLF_REPLY_PENDING = 9, 312 GLF_INITIAL = 10, 313 GLF_FROZEN = 11, 314 GLF_QUEUED = 12, 315 GLF_LRU = 13, 316 GLF_OBJECT = 14, /* Used only for tracing */ 317 GLF_BLOCKING = 15, 318 }; 319 320 struct gfs2_glock { 321 struct hlist_bl_node gl_list; 322 struct gfs2_sbd *gl_sbd; 323 unsigned long gl_flags; /* GLF_... */ 324 struct lm_lockname gl_name; 325 326 struct lockref gl_lockref; 327 #define gl_spin gl_lockref.lock 328 329 /* State fields protected by gl_spin */ 330 unsigned int gl_state:2, /* Current state */ 331 gl_target:2, /* Target state */ 332 gl_demote_state:2, /* State requested by remote node */ 333 gl_req:2, /* State in last dlm request */ 334 gl_reply:8; /* Last reply from the dlm */ 335 336 unsigned int gl_hash; 337 unsigned long gl_demote_time; /* time of first demote request */ 338 long gl_hold_time; 339 struct list_head gl_holders; 340 341 const struct gfs2_glock_operations *gl_ops; 342 ktime_t gl_dstamp; 343 struct gfs2_lkstats gl_stats; 344 struct dlm_lksb gl_lksb; 345 unsigned long gl_tchange; 346 void *gl_object; 347 348 struct list_head gl_lru; 349 struct list_head gl_ail_list; 350 atomic_t gl_ail_count; 351 atomic_t gl_revokes; 352 struct delayed_work gl_work; 353 struct work_struct gl_delete; 354 struct rcu_head gl_rcu; 355 }; 356 357 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 358 359 enum { 360 GIF_INVALID = 0, 361 GIF_QD_LOCKED = 1, 362 GIF_ALLOC_FAILED = 2, 363 GIF_SW_PAGED = 3, 364 GIF_ORDERED = 4, 365 }; 366 367 struct gfs2_inode { 368 struct inode i_inode; 369 u64 i_no_addr; 370 u64 i_no_formal_ino; 371 u64 i_generation; 372 u64 i_eattr; 373 unsigned long i_flags; /* GIF_... */ 374 struct gfs2_glock *i_gl; /* Move into i_gh? */ 375 struct gfs2_holder i_iopen_gh; 376 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 377 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 378 struct gfs2_rgrpd *i_rgd; 379 u64 i_goal; /* goal block for allocations */ 380 struct rw_semaphore i_rw_mutex; 381 struct list_head i_ordered; 382 struct list_head i_trunc_list; 383 __be64 *i_hash_cache; 384 u32 i_entries; 385 u32 i_diskflags; 386 u8 i_height; 387 u8 i_depth; 388 }; 389 390 /* 391 * Since i_inode is the first element of struct gfs2_inode, 392 * this is effectively a cast. 393 */ 394 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 395 { 396 return container_of(inode, struct gfs2_inode, i_inode); 397 } 398 399 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 400 { 401 return inode->i_sb->s_fs_info; 402 } 403 404 struct gfs2_file { 405 struct mutex f_fl_mutex; 406 struct gfs2_holder f_fl_gh; 407 }; 408 409 struct gfs2_revoke_replay { 410 struct list_head rr_list; 411 u64 rr_blkno; 412 unsigned int rr_where; 413 }; 414 415 enum { 416 QDF_CHANGE = 1, 417 QDF_LOCKED = 2, 418 QDF_REFRESH = 3, 419 }; 420 421 struct gfs2_quota_data { 422 struct list_head qd_list; 423 struct kqid qd_id; 424 struct lockref qd_lockref; 425 struct list_head qd_lru; 426 427 unsigned long qd_flags; /* QDF_... */ 428 429 s64 qd_change; 430 s64 qd_change_sync; 431 432 unsigned int qd_slot; 433 unsigned int qd_slot_count; 434 435 struct buffer_head *qd_bh; 436 struct gfs2_quota_change *qd_bh_qc; 437 unsigned int qd_bh_count; 438 439 struct gfs2_glock *qd_gl; 440 struct gfs2_quota_lvb qd_qb; 441 442 u64 qd_sync_gen; 443 unsigned long qd_last_warn; 444 }; 445 446 struct gfs2_trans { 447 unsigned long tr_ip; 448 449 unsigned int tr_blocks; 450 unsigned int tr_revokes; 451 unsigned int tr_reserved; 452 453 struct gfs2_holder tr_t_gh; 454 455 int tr_touched; 456 int tr_attached; 457 458 unsigned int tr_num_buf_new; 459 unsigned int tr_num_databuf_new; 460 unsigned int tr_num_buf_rm; 461 unsigned int tr_num_databuf_rm; 462 unsigned int tr_num_revoke; 463 unsigned int tr_num_revoke_rm; 464 465 struct list_head tr_list; 466 467 unsigned int tr_first; 468 struct list_head tr_ail1_list; 469 struct list_head tr_ail2_list; 470 }; 471 472 struct gfs2_journal_extent { 473 struct list_head extent_list; 474 475 unsigned int lblock; /* First logical block */ 476 u64 dblock; /* First disk block */ 477 u64 blocks; 478 }; 479 480 struct gfs2_jdesc { 481 struct list_head jd_list; 482 struct list_head extent_list; 483 struct work_struct jd_work; 484 struct inode *jd_inode; 485 unsigned long jd_flags; 486 #define JDF_RECOVERY 1 487 unsigned int jd_jid; 488 unsigned int jd_blocks; 489 int jd_recover_error; 490 }; 491 492 struct gfs2_statfs_change_host { 493 s64 sc_total; 494 s64 sc_free; 495 s64 sc_dinodes; 496 }; 497 498 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 499 #define GFS2_QUOTA_OFF 0 500 #define GFS2_QUOTA_ACCOUNT 1 501 #define GFS2_QUOTA_ON 2 502 503 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 504 #define GFS2_DATA_WRITEBACK 1 505 #define GFS2_DATA_ORDERED 2 506 507 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 508 #define GFS2_ERRORS_WITHDRAW 0 509 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 510 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 511 #define GFS2_ERRORS_PANIC 3 512 513 struct gfs2_args { 514 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 515 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 516 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 517 unsigned int ar_spectator:1; /* Don't get a journal */ 518 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 519 unsigned int ar_debug:1; /* Oops on errors */ 520 unsigned int ar_posix_acl:1; /* Enable posix acls */ 521 unsigned int ar_quota:2; /* off/account/on */ 522 unsigned int ar_suiddir:1; /* suiddir support */ 523 unsigned int ar_data:2; /* ordered/writeback */ 524 unsigned int ar_meta:1; /* mount metafs */ 525 unsigned int ar_discard:1; /* discard requests */ 526 unsigned int ar_errors:2; /* errors=withdraw | panic */ 527 unsigned int ar_nobarrier:1; /* do not send barriers */ 528 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 529 int ar_commit; /* Commit interval */ 530 int ar_statfs_quantum; /* The fast statfs interval */ 531 int ar_quota_quantum; /* The quota interval */ 532 int ar_statfs_percent; /* The % change to force sync */ 533 }; 534 535 struct gfs2_tune { 536 spinlock_t gt_spin; 537 538 unsigned int gt_logd_secs; 539 540 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 541 unsigned int gt_quota_scale_num; /* Numerator */ 542 unsigned int gt_quota_scale_den; /* Denominator */ 543 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 544 unsigned int gt_new_files_jdata; 545 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 546 unsigned int gt_complain_secs; 547 unsigned int gt_statfs_quantum; 548 unsigned int gt_statfs_slow; 549 }; 550 551 enum { 552 SDF_JOURNAL_CHECKED = 0, 553 SDF_JOURNAL_LIVE = 1, 554 SDF_SHUTDOWN = 2, 555 SDF_NOBARRIERS = 3, 556 SDF_NORECOVERY = 4, 557 SDF_DEMOTE = 5, 558 SDF_NOJOURNALID = 6, 559 SDF_RORECOVERY = 7, /* read only recovery */ 560 SDF_SKIP_DLM_UNLOCK = 8, 561 }; 562 563 #define GFS2_FSNAME_LEN 256 564 565 struct gfs2_inum_host { 566 u64 no_formal_ino; 567 u64 no_addr; 568 }; 569 570 struct gfs2_sb_host { 571 u32 sb_magic; 572 u32 sb_type; 573 u32 sb_format; 574 575 u32 sb_fs_format; 576 u32 sb_multihost_format; 577 u32 sb_bsize; 578 u32 sb_bsize_shift; 579 580 struct gfs2_inum_host sb_master_dir; 581 struct gfs2_inum_host sb_root_dir; 582 583 char sb_lockproto[GFS2_LOCKNAME_LEN]; 584 char sb_locktable[GFS2_LOCKNAME_LEN]; 585 }; 586 587 /* 588 * lm_mount() return values 589 * 590 * ls_jid - the journal ID this node should use 591 * ls_first - this node is the first to mount the file system 592 * ls_lockspace - lock module's context for this file system 593 * ls_ops - lock module's functions 594 */ 595 596 struct lm_lockstruct { 597 int ls_jid; 598 unsigned int ls_first; 599 const struct lm_lockops *ls_ops; 600 dlm_lockspace_t *ls_dlm; 601 602 int ls_recover_jid_done; /* These two are deprecated, */ 603 int ls_recover_jid_status; /* used previously by gfs_controld */ 604 605 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 606 struct dlm_lksb ls_control_lksb; /* control_lock */ 607 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 608 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 609 char *ls_lvb_bits; 610 611 spinlock_t ls_recover_spin; /* protects following fields */ 612 unsigned long ls_recover_flags; /* DFL_ */ 613 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 614 uint32_t ls_recover_start; /* gen in last recover_done cb */ 615 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 616 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 617 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 618 uint32_t *ls_recover_result; /* result of last jid recovery */ 619 }; 620 621 struct gfs2_pcpu_lkstats { 622 /* One struct for each glock type */ 623 struct gfs2_lkstats lkstats[10]; 624 }; 625 626 struct gfs2_sbd { 627 struct super_block *sd_vfs; 628 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 629 struct kobject sd_kobj; 630 unsigned long sd_flags; /* SDF_... */ 631 struct gfs2_sb_host sd_sb; 632 633 /* Constants computed on mount */ 634 635 u32 sd_fsb2bb; 636 u32 sd_fsb2bb_shift; 637 u32 sd_diptrs; /* Number of pointers in a dinode */ 638 u32 sd_inptrs; /* Number of pointers in a indirect block */ 639 u32 sd_jbsize; /* Size of a journaled data block */ 640 u32 sd_hash_bsize; /* sizeof(exhash block) */ 641 u32 sd_hash_bsize_shift; 642 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 643 u32 sd_qc_per_block; 644 u32 sd_blocks_per_bitmap; 645 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 646 u32 sd_max_height; /* Max height of a file's metadata tree */ 647 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 648 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 649 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 650 651 struct gfs2_args sd_args; /* Mount arguments */ 652 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 653 654 /* Lock Stuff */ 655 656 struct lm_lockstruct sd_lockstruct; 657 struct gfs2_holder sd_live_gh; 658 struct gfs2_glock *sd_rename_gl; 659 struct gfs2_glock *sd_trans_gl; 660 wait_queue_head_t sd_glock_wait; 661 atomic_t sd_glock_disposal; 662 struct completion sd_locking_init; 663 struct completion sd_wdack; 664 struct delayed_work sd_control_work; 665 666 /* Inode Stuff */ 667 668 struct dentry *sd_master_dir; 669 struct dentry *sd_root_dir; 670 671 struct inode *sd_jindex; 672 struct inode *sd_statfs_inode; 673 struct inode *sd_sc_inode; 674 struct inode *sd_qc_inode; 675 struct inode *sd_rindex; 676 struct inode *sd_quota_inode; 677 678 /* StatFS stuff */ 679 680 spinlock_t sd_statfs_spin; 681 struct gfs2_statfs_change_host sd_statfs_master; 682 struct gfs2_statfs_change_host sd_statfs_local; 683 int sd_statfs_force_sync; 684 685 /* Resource group stuff */ 686 687 int sd_rindex_uptodate; 688 spinlock_t sd_rindex_spin; 689 struct rb_root sd_rindex_tree; 690 unsigned int sd_rgrps; 691 unsigned int sd_max_rg_data; 692 693 /* Journal index stuff */ 694 695 struct list_head sd_jindex_list; 696 spinlock_t sd_jindex_spin; 697 struct mutex sd_jindex_mutex; 698 unsigned int sd_journals; 699 700 struct gfs2_jdesc *sd_jdesc; 701 struct gfs2_holder sd_journal_gh; 702 struct gfs2_holder sd_jinode_gh; 703 704 struct gfs2_holder sd_sc_gh; 705 struct gfs2_holder sd_qc_gh; 706 707 /* Daemon stuff */ 708 709 struct task_struct *sd_logd_process; 710 struct task_struct *sd_quotad_process; 711 712 /* Quota stuff */ 713 714 struct list_head sd_quota_list; 715 atomic_t sd_quota_count; 716 struct mutex sd_quota_mutex; 717 struct mutex sd_quota_sync_mutex; 718 wait_queue_head_t sd_quota_wait; 719 struct list_head sd_trunc_list; 720 spinlock_t sd_trunc_lock; 721 722 unsigned int sd_quota_slots; 723 unsigned int sd_quota_chunks; 724 unsigned char **sd_quota_bitmap; 725 726 u64 sd_quota_sync_gen; 727 728 /* Log stuff */ 729 730 spinlock_t sd_log_lock; 731 732 struct gfs2_trans *sd_log_tr; 733 unsigned int sd_log_blks_reserved; 734 unsigned int sd_log_commited_buf; 735 unsigned int sd_log_commited_databuf; 736 int sd_log_commited_revoke; 737 738 atomic_t sd_log_pinned; 739 unsigned int sd_log_num_buf; 740 unsigned int sd_log_num_revoke; 741 unsigned int sd_log_num_rg; 742 unsigned int sd_log_num_databuf; 743 744 struct list_head sd_log_le_buf; 745 struct list_head sd_log_le_revoke; 746 struct list_head sd_log_le_databuf; 747 struct list_head sd_log_le_ordered; 748 spinlock_t sd_ordered_lock; 749 750 atomic_t sd_log_thresh1; 751 atomic_t sd_log_thresh2; 752 atomic_t sd_log_blks_free; 753 wait_queue_head_t sd_log_waitq; 754 wait_queue_head_t sd_logd_waitq; 755 756 u64 sd_log_sequence; 757 unsigned int sd_log_head; 758 unsigned int sd_log_tail; 759 int sd_log_idle; 760 761 struct rw_semaphore sd_log_flush_lock; 762 atomic_t sd_log_in_flight; 763 struct bio *sd_log_bio; 764 wait_queue_head_t sd_log_flush_wait; 765 int sd_log_error; 766 767 unsigned int sd_log_flush_head; 768 u64 sd_log_flush_wrapped; 769 770 spinlock_t sd_ail_lock; 771 struct list_head sd_ail1_list; 772 struct list_head sd_ail2_list; 773 774 /* Replay stuff */ 775 776 struct list_head sd_revoke_list; 777 unsigned int sd_replay_tail; 778 779 unsigned int sd_found_blocks; 780 unsigned int sd_found_revokes; 781 unsigned int sd_replayed_blocks; 782 783 /* For quiescing the filesystem */ 784 struct gfs2_holder sd_freeze_gh; 785 786 char sd_fsname[GFS2_FSNAME_LEN]; 787 char sd_table_name[GFS2_FSNAME_LEN]; 788 char sd_proto_name[GFS2_FSNAME_LEN]; 789 790 /* Debugging crud */ 791 792 unsigned long sd_last_warning; 793 struct dentry *debugfs_dir; /* debugfs directory */ 794 struct dentry *debugfs_dentry_glocks; 795 struct dentry *debugfs_dentry_glstats; 796 struct dentry *debugfs_dentry_sbstats; 797 }; 798 799 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 800 { 801 gl->gl_stats.stats[which]++; 802 } 803 804 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 805 { 806 const struct gfs2_sbd *sdp = gl->gl_sbd; 807 preempt_disable(); 808 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 809 preempt_enable(); 810 } 811 812 #endif /* __INCORE_DOT_H__ */ 813 814