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 25 #define DIO_WAIT 0x00000010 26 #define DIO_METADATA 0x00000020 27 28 struct gfs2_log_operations; 29 struct gfs2_bufdata; 30 struct gfs2_holder; 31 struct gfs2_glock; 32 struct gfs2_quota_data; 33 struct gfs2_trans; 34 struct gfs2_ail; 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_add) (struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); 56 void (*lo_before_commit) (struct gfs2_sbd *sdp); 57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); 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 }; 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 struct gfs2_bitmap *bi; /* Bitmap must belong to the rgd */ 107 u32 offset; /* The offset is bitmap relative */ 108 }; 109 110 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 111 { 112 return rbm->rgd->rd_data0 + (rbm->bi->bi_start * GFS2_NBBY) + rbm->offset; 113 } 114 115 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 116 const struct gfs2_rbm *rbm2) 117 { 118 return (rbm1->rgd == rbm2->rgd) && (rbm1->bi == rbm2->bi) && 119 (rbm1->offset == rbm2->offset); 120 } 121 122 enum gfs2_state_bits { 123 BH_Pinned = BH_PrivateStart, 124 BH_Escaped = BH_PrivateStart + 1, 125 BH_Zeronew = BH_PrivateStart + 2, 126 }; 127 128 BUFFER_FNS(Pinned, pinned) 129 TAS_BUFFER_FNS(Pinned, pinned) 130 BUFFER_FNS(Escaped, escaped) 131 TAS_BUFFER_FNS(Escaped, escaped) 132 BUFFER_FNS(Zeronew, zeronew) 133 TAS_BUFFER_FNS(Zeronew, zeronew) 134 135 struct gfs2_bufdata { 136 struct buffer_head *bd_bh; 137 struct gfs2_glock *bd_gl; 138 u64 bd_blkno; 139 140 struct list_head bd_list; 141 const struct gfs2_log_operations *bd_ops; 142 143 struct gfs2_ail *bd_ail; 144 struct list_head bd_ail_st_list; 145 struct list_head bd_ail_gl_list; 146 }; 147 148 /* 149 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 150 * prefix of lock_dlm_ gets awkward. 151 */ 152 153 #define GDLM_STRNAME_BYTES 25 154 #define GDLM_LVB_SIZE 32 155 156 /* 157 * ls_recover_flags: 158 * 159 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 160 * held by failed nodes whose journals need recovery. Those locks should 161 * only be used for journal recovery until the journal recovery is done. 162 * This is set by the dlm recover_prep callback and cleared by the 163 * gfs2_control thread when journal recovery is complete. To avoid 164 * races between recover_prep setting and gfs2_control clearing, recover_spin 165 * is held while changing this bit and reading/writing recover_block 166 * and recover_start. 167 * 168 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 169 * 170 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 171 * recovery of all journals before allowing other nodes to mount the fs. 172 * This is cleared when FIRST_MOUNT_DONE is set. 173 * 174 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 175 * recovery of all journals, and now allows other nodes to mount the fs. 176 * 177 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 178 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 179 * control clearing BLOCK_LOCKS for further recoveries. 180 * 181 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 182 * 183 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 184 * and recover_done(), i.e. set while recover_block == recover_start. 185 */ 186 187 enum { 188 DFL_BLOCK_LOCKS = 0, 189 DFL_NO_DLM_OPS = 1, 190 DFL_FIRST_MOUNT = 2, 191 DFL_FIRST_MOUNT_DONE = 3, 192 DFL_MOUNT_DONE = 4, 193 DFL_UNMOUNT = 5, 194 DFL_DLM_RECOVERY = 6, 195 }; 196 197 struct lm_lockname { 198 u64 ln_number; 199 unsigned int ln_type; 200 }; 201 202 #define lm_name_equal(name1, name2) \ 203 (((name1)->ln_number == (name2)->ln_number) && \ 204 ((name1)->ln_type == (name2)->ln_type)) 205 206 207 struct gfs2_glock_operations { 208 void (*go_sync) (struct gfs2_glock *gl); 209 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 210 void (*go_inval) (struct gfs2_glock *gl, int flags); 211 int (*go_demote_ok) (const struct gfs2_glock *gl); 212 int (*go_lock) (struct gfs2_holder *gh); 213 void (*go_unlock) (struct gfs2_holder *gh); 214 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 215 void (*go_callback) (struct gfs2_glock *gl); 216 const int go_type; 217 const unsigned long go_flags; 218 #define GLOF_ASPACE 1 219 #define GLOF_LVB 2 220 }; 221 222 enum { 223 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 224 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 225 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 226 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 227 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 228 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 229 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 230 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 231 GFS2_NR_LKSTATS 232 }; 233 234 struct gfs2_lkstats { 235 s64 stats[GFS2_NR_LKSTATS]; 236 }; 237 238 enum { 239 /* States */ 240 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 241 HIF_FIRST = 7, 242 HIF_WAIT = 10, 243 }; 244 245 struct gfs2_holder { 246 struct list_head gh_list; 247 248 struct gfs2_glock *gh_gl; 249 struct pid *gh_owner_pid; 250 unsigned int gh_state; 251 unsigned gh_flags; 252 253 int gh_error; 254 unsigned long gh_iflags; /* HIF_... */ 255 unsigned long gh_ip; 256 }; 257 258 /* Resource group multi-block reservation, in order of appearance: 259 260 Step 1. Function prepares to write, allocates a mb, sets the size hint. 261 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 262 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 263 Step 4. Bits are assigned from the rgrp based on either the reservation 264 or wherever it can. 265 */ 266 267 struct gfs2_blkreserv { 268 /* components used during write (step 1): */ 269 atomic_t rs_sizehint; /* hint of the write size */ 270 271 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 272 struct rb_node rs_node; /* link to other block reservations */ 273 struct gfs2_rbm rs_rbm; /* Start of reservation */ 274 u32 rs_free; /* how many blocks are still free */ 275 u64 rs_inum; /* Inode number for reservation */ 276 277 /* ancillary quota stuff */ 278 struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; 279 struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; 280 unsigned int rs_qa_qd_num; 281 }; 282 283 enum { 284 GLF_LOCK = 1, 285 GLF_DEMOTE = 3, 286 GLF_PENDING_DEMOTE = 4, 287 GLF_DEMOTE_IN_PROGRESS = 5, 288 GLF_DIRTY = 6, 289 GLF_LFLUSH = 7, 290 GLF_INVALIDATE_IN_PROGRESS = 8, 291 GLF_REPLY_PENDING = 9, 292 GLF_INITIAL = 10, 293 GLF_FROZEN = 11, 294 GLF_QUEUED = 12, 295 GLF_LRU = 13, 296 GLF_OBJECT = 14, /* Used only for tracing */ 297 GLF_BLOCKING = 15, 298 }; 299 300 struct gfs2_glock { 301 struct hlist_bl_node gl_list; 302 struct gfs2_sbd *gl_sbd; 303 unsigned long gl_flags; /* GLF_... */ 304 struct lm_lockname gl_name; 305 atomic_t gl_ref; 306 307 spinlock_t gl_spin; 308 309 /* State fields protected by gl_spin */ 310 unsigned int gl_state:2, /* Current state */ 311 gl_target:2, /* Target state */ 312 gl_demote_state:2, /* State requested by remote node */ 313 gl_req:2, /* State in last dlm request */ 314 gl_reply:8; /* Last reply from the dlm */ 315 316 unsigned int gl_hash; 317 unsigned long gl_demote_time; /* time of first demote request */ 318 long gl_hold_time; 319 struct list_head gl_holders; 320 321 const struct gfs2_glock_operations *gl_ops; 322 ktime_t gl_dstamp; 323 struct gfs2_lkstats gl_stats; 324 struct dlm_lksb gl_lksb; 325 unsigned long gl_tchange; 326 void *gl_object; 327 328 struct list_head gl_lru; 329 struct list_head gl_ail_list; 330 atomic_t gl_ail_count; 331 atomic_t gl_revokes; 332 struct delayed_work gl_work; 333 struct work_struct gl_delete; 334 struct rcu_head gl_rcu; 335 }; 336 337 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 338 339 enum { 340 GIF_INVALID = 0, 341 GIF_QD_LOCKED = 1, 342 GIF_ALLOC_FAILED = 2, 343 GIF_SW_PAGED = 3, 344 }; 345 346 struct gfs2_inode { 347 struct inode i_inode; 348 u64 i_no_addr; 349 u64 i_no_formal_ino; 350 u64 i_generation; 351 u64 i_eattr; 352 unsigned long i_flags; /* GIF_... */ 353 struct gfs2_glock *i_gl; /* Move into i_gh? */ 354 struct gfs2_holder i_iopen_gh; 355 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 356 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 357 struct gfs2_rgrpd *i_rgd; 358 u64 i_goal; /* goal block for allocations */ 359 struct rw_semaphore i_rw_mutex; 360 struct list_head i_trunc_list; 361 __be64 *i_hash_cache; 362 u32 i_entries; 363 u32 i_diskflags; 364 u8 i_height; 365 u8 i_depth; 366 }; 367 368 /* 369 * Since i_inode is the first element of struct gfs2_inode, 370 * this is effectively a cast. 371 */ 372 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 373 { 374 return container_of(inode, struct gfs2_inode, i_inode); 375 } 376 377 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 378 { 379 return inode->i_sb->s_fs_info; 380 } 381 382 struct gfs2_file { 383 struct mutex f_fl_mutex; 384 struct gfs2_holder f_fl_gh; 385 }; 386 387 struct gfs2_revoke_replay { 388 struct list_head rr_list; 389 u64 rr_blkno; 390 unsigned int rr_where; 391 }; 392 393 enum { 394 QDF_USER = 0, 395 QDF_CHANGE = 1, 396 QDF_LOCKED = 2, 397 QDF_REFRESH = 3, 398 }; 399 400 struct gfs2_quota_data { 401 struct list_head qd_list; 402 struct list_head qd_reclaim; 403 404 atomic_t qd_count; 405 406 u32 qd_id; 407 unsigned long qd_flags; /* QDF_... */ 408 409 s64 qd_change; 410 s64 qd_change_sync; 411 412 unsigned int qd_slot; 413 unsigned int qd_slot_count; 414 415 struct buffer_head *qd_bh; 416 struct gfs2_quota_change *qd_bh_qc; 417 unsigned int qd_bh_count; 418 419 struct gfs2_glock *qd_gl; 420 struct gfs2_quota_lvb qd_qb; 421 422 u64 qd_sync_gen; 423 unsigned long qd_last_warn; 424 }; 425 426 struct gfs2_trans { 427 unsigned long tr_ip; 428 429 unsigned int tr_blocks; 430 unsigned int tr_revokes; 431 unsigned int tr_reserved; 432 433 struct gfs2_holder tr_t_gh; 434 435 int tr_touched; 436 437 unsigned int tr_num_buf_new; 438 unsigned int tr_num_databuf_new; 439 unsigned int tr_num_buf_rm; 440 unsigned int tr_num_databuf_rm; 441 unsigned int tr_num_revoke; 442 unsigned int tr_num_revoke_rm; 443 }; 444 445 struct gfs2_ail { 446 struct list_head ai_list; 447 448 unsigned int ai_first; 449 struct list_head ai_ail1_list; 450 struct list_head ai_ail2_list; 451 }; 452 453 struct gfs2_journal_extent { 454 struct list_head extent_list; 455 456 unsigned int lblock; /* First logical block */ 457 u64 dblock; /* First disk block */ 458 u64 blocks; 459 }; 460 461 struct gfs2_jdesc { 462 struct list_head jd_list; 463 struct list_head extent_list; 464 struct work_struct jd_work; 465 struct inode *jd_inode; 466 unsigned long jd_flags; 467 #define JDF_RECOVERY 1 468 unsigned int jd_jid; 469 unsigned int jd_blocks; 470 int jd_recover_error; 471 }; 472 473 struct gfs2_statfs_change_host { 474 s64 sc_total; 475 s64 sc_free; 476 s64 sc_dinodes; 477 }; 478 479 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 480 #define GFS2_QUOTA_OFF 0 481 #define GFS2_QUOTA_ACCOUNT 1 482 #define GFS2_QUOTA_ON 2 483 484 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 485 #define GFS2_DATA_WRITEBACK 1 486 #define GFS2_DATA_ORDERED 2 487 488 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 489 #define GFS2_ERRORS_WITHDRAW 0 490 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 491 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 492 #define GFS2_ERRORS_PANIC 3 493 494 struct gfs2_args { 495 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 496 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 497 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 498 unsigned int ar_spectator:1; /* Don't get a journal */ 499 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 500 unsigned int ar_debug:1; /* Oops on errors */ 501 unsigned int ar_posix_acl:1; /* Enable posix acls */ 502 unsigned int ar_quota:2; /* off/account/on */ 503 unsigned int ar_suiddir:1; /* suiddir support */ 504 unsigned int ar_data:2; /* ordered/writeback */ 505 unsigned int ar_meta:1; /* mount metafs */ 506 unsigned int ar_discard:1; /* discard requests */ 507 unsigned int ar_errors:2; /* errors=withdraw | panic */ 508 unsigned int ar_nobarrier:1; /* do not send barriers */ 509 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 510 int ar_commit; /* Commit interval */ 511 int ar_statfs_quantum; /* The fast statfs interval */ 512 int ar_quota_quantum; /* The quota interval */ 513 int ar_statfs_percent; /* The % change to force sync */ 514 }; 515 516 struct gfs2_tune { 517 spinlock_t gt_spin; 518 519 unsigned int gt_logd_secs; 520 521 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ 522 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 523 unsigned int gt_quota_scale_num; /* Numerator */ 524 unsigned int gt_quota_scale_den; /* Denominator */ 525 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 526 unsigned int gt_new_files_jdata; 527 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 528 unsigned int gt_complain_secs; 529 unsigned int gt_statfs_quantum; 530 unsigned int gt_statfs_slow; 531 }; 532 533 enum { 534 SDF_JOURNAL_CHECKED = 0, 535 SDF_JOURNAL_LIVE = 1, 536 SDF_SHUTDOWN = 2, 537 SDF_NOBARRIERS = 3, 538 SDF_NORECOVERY = 4, 539 SDF_DEMOTE = 5, 540 SDF_NOJOURNALID = 6, 541 SDF_RORECOVERY = 7, /* read only recovery */ 542 SDF_SKIP_DLM_UNLOCK = 8, 543 }; 544 545 #define GFS2_FSNAME_LEN 256 546 547 struct gfs2_inum_host { 548 u64 no_formal_ino; 549 u64 no_addr; 550 }; 551 552 struct gfs2_sb_host { 553 u32 sb_magic; 554 u32 sb_type; 555 u32 sb_format; 556 557 u32 sb_fs_format; 558 u32 sb_multihost_format; 559 u32 sb_bsize; 560 u32 sb_bsize_shift; 561 562 struct gfs2_inum_host sb_master_dir; 563 struct gfs2_inum_host sb_root_dir; 564 565 char sb_lockproto[GFS2_LOCKNAME_LEN]; 566 char sb_locktable[GFS2_LOCKNAME_LEN]; 567 }; 568 569 /* 570 * lm_mount() return values 571 * 572 * ls_jid - the journal ID this node should use 573 * ls_first - this node is the first to mount the file system 574 * ls_lockspace - lock module's context for this file system 575 * ls_ops - lock module's functions 576 */ 577 578 struct lm_lockstruct { 579 int ls_jid; 580 unsigned int ls_first; 581 const struct lm_lockops *ls_ops; 582 dlm_lockspace_t *ls_dlm; 583 584 int ls_recover_jid_done; /* These two are deprecated, */ 585 int ls_recover_jid_status; /* used previously by gfs_controld */ 586 587 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 588 struct dlm_lksb ls_control_lksb; /* control_lock */ 589 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 590 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 591 592 spinlock_t ls_recover_spin; /* protects following fields */ 593 unsigned long ls_recover_flags; /* DFL_ */ 594 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 595 uint32_t ls_recover_start; /* gen in last recover_done cb */ 596 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 597 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 598 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 599 uint32_t *ls_recover_result; /* result of last jid recovery */ 600 }; 601 602 struct gfs2_pcpu_lkstats { 603 /* One struct for each glock type */ 604 struct gfs2_lkstats lkstats[10]; 605 }; 606 607 struct gfs2_sbd { 608 struct super_block *sd_vfs; 609 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 610 struct kobject sd_kobj; 611 unsigned long sd_flags; /* SDF_... */ 612 struct gfs2_sb_host sd_sb; 613 614 /* Constants computed on mount */ 615 616 u32 sd_fsb2bb; 617 u32 sd_fsb2bb_shift; 618 u32 sd_diptrs; /* Number of pointers in a dinode */ 619 u32 sd_inptrs; /* Number of pointers in a indirect block */ 620 u32 sd_jbsize; /* Size of a journaled data block */ 621 u32 sd_hash_bsize; /* sizeof(exhash block) */ 622 u32 sd_hash_bsize_shift; 623 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 624 u32 sd_qc_per_block; 625 u32 sd_blocks_per_bitmap; 626 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 627 u32 sd_max_height; /* Max height of a file's metadata tree */ 628 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 629 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 630 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 631 632 struct gfs2_args sd_args; /* Mount arguments */ 633 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 634 635 /* Lock Stuff */ 636 637 struct lm_lockstruct sd_lockstruct; 638 struct gfs2_holder sd_live_gh; 639 struct gfs2_glock *sd_rename_gl; 640 struct gfs2_glock *sd_trans_gl; 641 wait_queue_head_t sd_glock_wait; 642 atomic_t sd_glock_disposal; 643 struct completion sd_locking_init; 644 struct delayed_work sd_control_work; 645 646 /* Inode Stuff */ 647 648 struct dentry *sd_master_dir; 649 struct dentry *sd_root_dir; 650 651 struct inode *sd_jindex; 652 struct inode *sd_statfs_inode; 653 struct inode *sd_sc_inode; 654 struct inode *sd_qc_inode; 655 struct inode *sd_rindex; 656 struct inode *sd_quota_inode; 657 658 /* StatFS stuff */ 659 660 spinlock_t sd_statfs_spin; 661 struct gfs2_statfs_change_host sd_statfs_master; 662 struct gfs2_statfs_change_host sd_statfs_local; 663 int sd_statfs_force_sync; 664 665 /* Resource group stuff */ 666 667 int sd_rindex_uptodate; 668 spinlock_t sd_rindex_spin; 669 struct rb_root sd_rindex_tree; 670 unsigned int sd_rgrps; 671 unsigned int sd_max_rg_data; 672 673 /* Journal index stuff */ 674 675 struct list_head sd_jindex_list; 676 spinlock_t sd_jindex_spin; 677 struct mutex sd_jindex_mutex; 678 unsigned int sd_journals; 679 680 struct gfs2_jdesc *sd_jdesc; 681 struct gfs2_holder sd_journal_gh; 682 struct gfs2_holder sd_jinode_gh; 683 684 struct gfs2_holder sd_sc_gh; 685 struct gfs2_holder sd_qc_gh; 686 687 /* Daemon stuff */ 688 689 struct task_struct *sd_logd_process; 690 struct task_struct *sd_quotad_process; 691 692 /* Quota stuff */ 693 694 struct list_head sd_quota_list; 695 atomic_t sd_quota_count; 696 struct mutex sd_quota_mutex; 697 wait_queue_head_t sd_quota_wait; 698 struct list_head sd_trunc_list; 699 spinlock_t sd_trunc_lock; 700 701 unsigned int sd_quota_slots; 702 unsigned int sd_quota_chunks; 703 unsigned char **sd_quota_bitmap; 704 705 u64 sd_quota_sync_gen; 706 707 /* Log stuff */ 708 709 spinlock_t sd_log_lock; 710 711 unsigned int sd_log_blks_reserved; 712 unsigned int sd_log_commited_buf; 713 unsigned int sd_log_commited_databuf; 714 int sd_log_commited_revoke; 715 716 atomic_t sd_log_pinned; 717 unsigned int sd_log_num_buf; 718 unsigned int sd_log_num_revoke; 719 unsigned int sd_log_num_rg; 720 unsigned int sd_log_num_databuf; 721 722 struct list_head sd_log_le_buf; 723 struct list_head sd_log_le_revoke; 724 struct list_head sd_log_le_databuf; 725 struct list_head sd_log_le_ordered; 726 727 atomic_t sd_log_thresh1; 728 atomic_t sd_log_thresh2; 729 atomic_t sd_log_blks_free; 730 wait_queue_head_t sd_log_waitq; 731 wait_queue_head_t sd_logd_waitq; 732 733 u64 sd_log_sequence; 734 unsigned int sd_log_head; 735 unsigned int sd_log_tail; 736 int sd_log_idle; 737 738 struct rw_semaphore sd_log_flush_lock; 739 atomic_t sd_log_in_flight; 740 struct bio *sd_log_bio; 741 wait_queue_head_t sd_log_flush_wait; 742 int sd_log_error; 743 744 unsigned int sd_log_flush_head; 745 u64 sd_log_flush_wrapped; 746 747 spinlock_t sd_ail_lock; 748 struct list_head sd_ail1_list; 749 struct list_head sd_ail2_list; 750 751 /* Replay stuff */ 752 753 struct list_head sd_revoke_list; 754 unsigned int sd_replay_tail; 755 756 unsigned int sd_found_blocks; 757 unsigned int sd_found_revokes; 758 unsigned int sd_replayed_blocks; 759 760 /* For quiescing the filesystem */ 761 762 struct gfs2_holder sd_freeze_gh; 763 struct mutex sd_freeze_lock; 764 unsigned int sd_freeze_count; 765 766 char sd_fsname[GFS2_FSNAME_LEN]; 767 char sd_table_name[GFS2_FSNAME_LEN]; 768 char sd_proto_name[GFS2_FSNAME_LEN]; 769 770 /* Debugging crud */ 771 772 unsigned long sd_last_warning; 773 struct dentry *debugfs_dir; /* debugfs directory */ 774 struct dentry *debugfs_dentry_glocks; 775 struct dentry *debugfs_dentry_glstats; 776 struct dentry *debugfs_dentry_sbstats; 777 }; 778 779 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 780 { 781 gl->gl_stats.stats[which]++; 782 } 783 784 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 785 { 786 const struct gfs2_sbd *sdp = gl->gl_sbd; 787 preempt_disable(); 788 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 789 preempt_enable(); 790 } 791 792 #endif /* __INCORE_DOT_H__ */ 793 794