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 u32 rd_rs_cnt; /* count of current reservations */ 103 }; 104 105 enum gfs2_state_bits { 106 BH_Pinned = BH_PrivateStart, 107 BH_Escaped = BH_PrivateStart + 1, 108 BH_Zeronew = BH_PrivateStart + 2, 109 }; 110 111 BUFFER_FNS(Pinned, pinned) 112 TAS_BUFFER_FNS(Pinned, pinned) 113 BUFFER_FNS(Escaped, escaped) 114 TAS_BUFFER_FNS(Escaped, escaped) 115 BUFFER_FNS(Zeronew, zeronew) 116 TAS_BUFFER_FNS(Zeronew, zeronew) 117 118 struct gfs2_bufdata { 119 struct buffer_head *bd_bh; 120 struct gfs2_glock *bd_gl; 121 u64 bd_blkno; 122 123 struct list_head bd_list; 124 const struct gfs2_log_operations *bd_ops; 125 126 struct gfs2_ail *bd_ail; 127 struct list_head bd_ail_st_list; 128 struct list_head bd_ail_gl_list; 129 }; 130 131 /* 132 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 133 * prefix of lock_dlm_ gets awkward. 134 */ 135 136 #define GDLM_STRNAME_BYTES 25 137 #define GDLM_LVB_SIZE 32 138 139 /* 140 * ls_recover_flags: 141 * 142 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 143 * held by failed nodes whose journals need recovery. Those locks should 144 * only be used for journal recovery until the journal recovery is done. 145 * This is set by the dlm recover_prep callback and cleared by the 146 * gfs2_control thread when journal recovery is complete. To avoid 147 * races between recover_prep setting and gfs2_control clearing, recover_spin 148 * is held while changing this bit and reading/writing recover_block 149 * and recover_start. 150 * 151 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 152 * 153 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 154 * recovery of all journals before allowing other nodes to mount the fs. 155 * This is cleared when FIRST_MOUNT_DONE is set. 156 * 157 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 158 * recovery of all journals, and now allows other nodes to mount the fs. 159 * 160 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 161 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 162 * control clearing BLOCK_LOCKS for further recoveries. 163 * 164 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 165 * 166 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 167 * and recover_done(), i.e. set while recover_block == recover_start. 168 */ 169 170 enum { 171 DFL_BLOCK_LOCKS = 0, 172 DFL_NO_DLM_OPS = 1, 173 DFL_FIRST_MOUNT = 2, 174 DFL_FIRST_MOUNT_DONE = 3, 175 DFL_MOUNT_DONE = 4, 176 DFL_UNMOUNT = 5, 177 DFL_DLM_RECOVERY = 6, 178 }; 179 180 struct lm_lockname { 181 u64 ln_number; 182 unsigned int ln_type; 183 }; 184 185 #define lm_name_equal(name1, name2) \ 186 (((name1)->ln_number == (name2)->ln_number) && \ 187 ((name1)->ln_type == (name2)->ln_type)) 188 189 190 struct gfs2_glock_operations { 191 void (*go_xmote_th) (struct gfs2_glock *gl); 192 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 193 void (*go_inval) (struct gfs2_glock *gl, int flags); 194 int (*go_demote_ok) (const struct gfs2_glock *gl); 195 int (*go_lock) (struct gfs2_holder *gh); 196 void (*go_unlock) (struct gfs2_holder *gh); 197 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 198 void (*go_callback) (struct gfs2_glock *gl); 199 const int go_type; 200 const unsigned long go_flags; 201 #define GLOF_ASPACE 1 202 }; 203 204 enum { 205 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 206 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 207 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 208 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 209 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 210 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 211 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 212 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 213 GFS2_NR_LKSTATS 214 }; 215 216 struct gfs2_lkstats { 217 s64 stats[GFS2_NR_LKSTATS]; 218 }; 219 220 enum { 221 /* States */ 222 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 223 HIF_FIRST = 7, 224 HIF_WAIT = 10, 225 }; 226 227 struct gfs2_holder { 228 struct list_head gh_list; 229 230 struct gfs2_glock *gh_gl; 231 struct pid *gh_owner_pid; 232 unsigned int gh_state; 233 unsigned gh_flags; 234 235 int gh_error; 236 unsigned long gh_iflags; /* HIF_... */ 237 unsigned long gh_ip; 238 }; 239 240 /* Resource group multi-block reservation, in order of appearance: 241 242 Step 1. Function prepares to write, allocates a mb, sets the size hint. 243 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 244 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 245 Step 4. Bits are assigned from the rgrp based on either the reservation 246 or wherever it can. 247 */ 248 249 struct gfs2_blkreserv { 250 /* components used during write (step 1): */ 251 atomic_t rs_sizehint; /* hint of the write size */ 252 253 /* components used during inplace_reserve (step 2): */ 254 u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */ 255 256 /* components used during get_local_rgrp (step 3): */ 257 struct gfs2_rgrpd *rs_rgd; /* pointer to the gfs2_rgrpd */ 258 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 259 struct rb_node rs_node; /* link to other block reservations */ 260 261 /* components used during block searches and assignments (step 4): */ 262 struct gfs2_bitmap *rs_bi; /* bitmap for the current allocation */ 263 u32 rs_biblk; /* start block relative to the bi */ 264 u32 rs_free; /* how many blocks are still free */ 265 266 /* ancillary quota stuff */ 267 struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; 268 struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; 269 unsigned int rs_qa_qd_num; 270 }; 271 272 enum { 273 GLF_LOCK = 1, 274 GLF_DEMOTE = 3, 275 GLF_PENDING_DEMOTE = 4, 276 GLF_DEMOTE_IN_PROGRESS = 5, 277 GLF_DIRTY = 6, 278 GLF_LFLUSH = 7, 279 GLF_INVALIDATE_IN_PROGRESS = 8, 280 GLF_REPLY_PENDING = 9, 281 GLF_INITIAL = 10, 282 GLF_FROZEN = 11, 283 GLF_QUEUED = 12, 284 GLF_LRU = 13, 285 GLF_OBJECT = 14, /* Used only for tracing */ 286 GLF_BLOCKING = 15, 287 }; 288 289 struct gfs2_glock { 290 struct hlist_bl_node gl_list; 291 struct gfs2_sbd *gl_sbd; 292 unsigned long gl_flags; /* GLF_... */ 293 struct lm_lockname gl_name; 294 atomic_t gl_ref; 295 296 spinlock_t gl_spin; 297 298 /* State fields protected by gl_spin */ 299 unsigned int gl_state:2, /* Current state */ 300 gl_target:2, /* Target state */ 301 gl_demote_state:2, /* State requested by remote node */ 302 gl_req:2, /* State in last dlm request */ 303 gl_reply:8; /* Last reply from the dlm */ 304 305 unsigned int gl_hash; 306 unsigned long gl_demote_time; /* time of first demote request */ 307 long gl_hold_time; 308 struct list_head gl_holders; 309 310 const struct gfs2_glock_operations *gl_ops; 311 ktime_t gl_dstamp; 312 struct gfs2_lkstats gl_stats; 313 struct dlm_lksb gl_lksb; 314 char gl_lvb[32]; 315 unsigned long gl_tchange; 316 void *gl_object; 317 318 struct list_head gl_lru; 319 struct list_head gl_ail_list; 320 atomic_t gl_ail_count; 321 atomic_t gl_revokes; 322 struct delayed_work gl_work; 323 struct work_struct gl_delete; 324 struct rcu_head gl_rcu; 325 }; 326 327 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 328 329 enum { 330 GIF_INVALID = 0, 331 GIF_QD_LOCKED = 1, 332 GIF_ALLOC_FAILED = 2, 333 GIF_SW_PAGED = 3, 334 }; 335 336 struct gfs2_inode { 337 struct inode i_inode; 338 u64 i_no_addr; 339 u64 i_no_formal_ino; 340 u64 i_generation; 341 u64 i_eattr; 342 unsigned long i_flags; /* GIF_... */ 343 struct gfs2_glock *i_gl; /* Move into i_gh? */ 344 struct gfs2_holder i_iopen_gh; 345 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 346 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 347 struct gfs2_rgrpd *i_rgd; 348 u64 i_goal; /* goal block for allocations */ 349 struct rw_semaphore i_rw_mutex; 350 struct list_head i_trunc_list; 351 __be64 *i_hash_cache; 352 u32 i_entries; 353 u32 i_diskflags; 354 u8 i_height; 355 u8 i_depth; 356 }; 357 358 /* 359 * Since i_inode is the first element of struct gfs2_inode, 360 * this is effectively a cast. 361 */ 362 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 363 { 364 return container_of(inode, struct gfs2_inode, i_inode); 365 } 366 367 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 368 { 369 return inode->i_sb->s_fs_info; 370 } 371 372 struct gfs2_file { 373 struct mutex f_fl_mutex; 374 struct gfs2_holder f_fl_gh; 375 }; 376 377 struct gfs2_revoke_replay { 378 struct list_head rr_list; 379 u64 rr_blkno; 380 unsigned int rr_where; 381 }; 382 383 enum { 384 QDF_USER = 0, 385 QDF_CHANGE = 1, 386 QDF_LOCKED = 2, 387 QDF_REFRESH = 3, 388 }; 389 390 struct gfs2_quota_data { 391 struct list_head qd_list; 392 struct list_head qd_reclaim; 393 394 atomic_t qd_count; 395 396 u32 qd_id; 397 unsigned long qd_flags; /* QDF_... */ 398 399 s64 qd_change; 400 s64 qd_change_sync; 401 402 unsigned int qd_slot; 403 unsigned int qd_slot_count; 404 405 struct buffer_head *qd_bh; 406 struct gfs2_quota_change *qd_bh_qc; 407 unsigned int qd_bh_count; 408 409 struct gfs2_glock *qd_gl; 410 struct gfs2_quota_lvb qd_qb; 411 412 u64 qd_sync_gen; 413 unsigned long qd_last_warn; 414 }; 415 416 struct gfs2_trans { 417 unsigned long tr_ip; 418 419 unsigned int tr_blocks; 420 unsigned int tr_revokes; 421 unsigned int tr_reserved; 422 423 struct gfs2_holder tr_t_gh; 424 425 int tr_touched; 426 427 unsigned int tr_num_buf_new; 428 unsigned int tr_num_databuf_new; 429 unsigned int tr_num_buf_rm; 430 unsigned int tr_num_databuf_rm; 431 unsigned int tr_num_revoke; 432 unsigned int tr_num_revoke_rm; 433 }; 434 435 struct gfs2_ail { 436 struct list_head ai_list; 437 438 unsigned int ai_first; 439 struct list_head ai_ail1_list; 440 struct list_head ai_ail2_list; 441 }; 442 443 struct gfs2_journal_extent { 444 struct list_head extent_list; 445 446 unsigned int lblock; /* First logical block */ 447 u64 dblock; /* First disk block */ 448 u64 blocks; 449 }; 450 451 struct gfs2_jdesc { 452 struct list_head jd_list; 453 struct list_head extent_list; 454 struct work_struct jd_work; 455 struct inode *jd_inode; 456 unsigned long jd_flags; 457 #define JDF_RECOVERY 1 458 unsigned int jd_jid; 459 unsigned int jd_blocks; 460 int jd_recover_error; 461 }; 462 463 struct gfs2_statfs_change_host { 464 s64 sc_total; 465 s64 sc_free; 466 s64 sc_dinodes; 467 }; 468 469 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 470 #define GFS2_QUOTA_OFF 0 471 #define GFS2_QUOTA_ACCOUNT 1 472 #define GFS2_QUOTA_ON 2 473 474 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 475 #define GFS2_DATA_WRITEBACK 1 476 #define GFS2_DATA_ORDERED 2 477 478 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 479 #define GFS2_ERRORS_WITHDRAW 0 480 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 481 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 482 #define GFS2_ERRORS_PANIC 3 483 484 struct gfs2_args { 485 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 486 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 487 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 488 unsigned int ar_spectator:1; /* Don't get a journal */ 489 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 490 unsigned int ar_debug:1; /* Oops on errors */ 491 unsigned int ar_posix_acl:1; /* Enable posix acls */ 492 unsigned int ar_quota:2; /* off/account/on */ 493 unsigned int ar_suiddir:1; /* suiddir support */ 494 unsigned int ar_data:2; /* ordered/writeback */ 495 unsigned int ar_meta:1; /* mount metafs */ 496 unsigned int ar_discard:1; /* discard requests */ 497 unsigned int ar_errors:2; /* errors=withdraw | panic */ 498 unsigned int ar_nobarrier:1; /* do not send barriers */ 499 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 500 int ar_commit; /* Commit interval */ 501 int ar_statfs_quantum; /* The fast statfs interval */ 502 int ar_quota_quantum; /* The quota interval */ 503 int ar_statfs_percent; /* The % change to force sync */ 504 }; 505 506 struct gfs2_tune { 507 spinlock_t gt_spin; 508 509 unsigned int gt_logd_secs; 510 511 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ 512 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 513 unsigned int gt_quota_scale_num; /* Numerator */ 514 unsigned int gt_quota_scale_den; /* Denominator */ 515 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 516 unsigned int gt_new_files_jdata; 517 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 518 unsigned int gt_complain_secs; 519 unsigned int gt_statfs_quantum; 520 unsigned int gt_statfs_slow; 521 }; 522 523 enum { 524 SDF_JOURNAL_CHECKED = 0, 525 SDF_JOURNAL_LIVE = 1, 526 SDF_SHUTDOWN = 2, 527 SDF_NOBARRIERS = 3, 528 SDF_NORECOVERY = 4, 529 SDF_DEMOTE = 5, 530 SDF_NOJOURNALID = 6, 531 SDF_RORECOVERY = 7, /* read only recovery */ 532 }; 533 534 #define GFS2_FSNAME_LEN 256 535 536 struct gfs2_inum_host { 537 u64 no_formal_ino; 538 u64 no_addr; 539 }; 540 541 struct gfs2_sb_host { 542 u32 sb_magic; 543 u32 sb_type; 544 u32 sb_format; 545 546 u32 sb_fs_format; 547 u32 sb_multihost_format; 548 u32 sb_bsize; 549 u32 sb_bsize_shift; 550 551 struct gfs2_inum_host sb_master_dir; 552 struct gfs2_inum_host sb_root_dir; 553 554 char sb_lockproto[GFS2_LOCKNAME_LEN]; 555 char sb_locktable[GFS2_LOCKNAME_LEN]; 556 }; 557 558 /* 559 * lm_mount() return values 560 * 561 * ls_jid - the journal ID this node should use 562 * ls_first - this node is the first to mount the file system 563 * ls_lockspace - lock module's context for this file system 564 * ls_ops - lock module's functions 565 */ 566 567 struct lm_lockstruct { 568 int ls_jid; 569 unsigned int ls_first; 570 const struct lm_lockops *ls_ops; 571 dlm_lockspace_t *ls_dlm; 572 573 int ls_recover_jid_done; /* These two are deprecated, */ 574 int ls_recover_jid_status; /* used previously by gfs_controld */ 575 576 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 577 struct dlm_lksb ls_control_lksb; /* control_lock */ 578 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 579 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 580 581 spinlock_t ls_recover_spin; /* protects following fields */ 582 unsigned long ls_recover_flags; /* DFL_ */ 583 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 584 uint32_t ls_recover_start; /* gen in last recover_done cb */ 585 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 586 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 587 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 588 uint32_t *ls_recover_result; /* result of last jid recovery */ 589 }; 590 591 struct gfs2_pcpu_lkstats { 592 /* One struct for each glock type */ 593 struct gfs2_lkstats lkstats[10]; 594 }; 595 596 struct gfs2_sbd { 597 struct super_block *sd_vfs; 598 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 599 struct kobject sd_kobj; 600 unsigned long sd_flags; /* SDF_... */ 601 struct gfs2_sb_host sd_sb; 602 603 /* Constants computed on mount */ 604 605 u32 sd_fsb2bb; 606 u32 sd_fsb2bb_shift; 607 u32 sd_diptrs; /* Number of pointers in a dinode */ 608 u32 sd_inptrs; /* Number of pointers in a indirect block */ 609 u32 sd_jbsize; /* Size of a journaled data block */ 610 u32 sd_hash_bsize; /* sizeof(exhash block) */ 611 u32 sd_hash_bsize_shift; 612 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 613 u32 sd_qc_per_block; 614 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 615 u32 sd_max_height; /* Max height of a file's metadata tree */ 616 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 617 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 618 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 619 620 struct gfs2_args sd_args; /* Mount arguments */ 621 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 622 623 /* Lock Stuff */ 624 625 struct lm_lockstruct sd_lockstruct; 626 struct gfs2_holder sd_live_gh; 627 struct gfs2_glock *sd_rename_gl; 628 struct gfs2_glock *sd_trans_gl; 629 wait_queue_head_t sd_glock_wait; 630 atomic_t sd_glock_disposal; 631 struct completion sd_locking_init; 632 struct delayed_work sd_control_work; 633 634 /* Inode Stuff */ 635 636 struct dentry *sd_master_dir; 637 struct dentry *sd_root_dir; 638 639 struct inode *sd_jindex; 640 struct inode *sd_statfs_inode; 641 struct inode *sd_sc_inode; 642 struct inode *sd_qc_inode; 643 struct inode *sd_rindex; 644 struct inode *sd_quota_inode; 645 646 /* StatFS stuff */ 647 648 spinlock_t sd_statfs_spin; 649 struct gfs2_statfs_change_host sd_statfs_master; 650 struct gfs2_statfs_change_host sd_statfs_local; 651 int sd_statfs_force_sync; 652 653 /* Resource group stuff */ 654 655 int sd_rindex_uptodate; 656 spinlock_t sd_rindex_spin; 657 struct rb_root sd_rindex_tree; 658 unsigned int sd_rgrps; 659 unsigned int sd_max_rg_data; 660 661 /* Journal index stuff */ 662 663 struct list_head sd_jindex_list; 664 spinlock_t sd_jindex_spin; 665 struct mutex sd_jindex_mutex; 666 unsigned int sd_journals; 667 668 struct gfs2_jdesc *sd_jdesc; 669 struct gfs2_holder sd_journal_gh; 670 struct gfs2_holder sd_jinode_gh; 671 672 struct gfs2_holder sd_sc_gh; 673 struct gfs2_holder sd_qc_gh; 674 675 /* Daemon stuff */ 676 677 struct task_struct *sd_logd_process; 678 struct task_struct *sd_quotad_process; 679 680 /* Quota stuff */ 681 682 struct list_head sd_quota_list; 683 atomic_t sd_quota_count; 684 struct mutex sd_quota_mutex; 685 wait_queue_head_t sd_quota_wait; 686 struct list_head sd_trunc_list; 687 spinlock_t sd_trunc_lock; 688 689 unsigned int sd_quota_slots; 690 unsigned int sd_quota_chunks; 691 unsigned char **sd_quota_bitmap; 692 693 u64 sd_quota_sync_gen; 694 695 /* Log stuff */ 696 697 spinlock_t sd_log_lock; 698 699 unsigned int sd_log_blks_reserved; 700 unsigned int sd_log_commited_buf; 701 unsigned int sd_log_commited_databuf; 702 int sd_log_commited_revoke; 703 704 atomic_t sd_log_pinned; 705 unsigned int sd_log_num_buf; 706 unsigned int sd_log_num_revoke; 707 unsigned int sd_log_num_rg; 708 unsigned int sd_log_num_databuf; 709 710 struct list_head sd_log_le_buf; 711 struct list_head sd_log_le_revoke; 712 struct list_head sd_log_le_databuf; 713 struct list_head sd_log_le_ordered; 714 715 atomic_t sd_log_thresh1; 716 atomic_t sd_log_thresh2; 717 atomic_t sd_log_blks_free; 718 wait_queue_head_t sd_log_waitq; 719 wait_queue_head_t sd_logd_waitq; 720 721 u64 sd_log_sequence; 722 unsigned int sd_log_head; 723 unsigned int sd_log_tail; 724 int sd_log_idle; 725 726 struct rw_semaphore sd_log_flush_lock; 727 atomic_t sd_log_in_flight; 728 struct bio *sd_log_bio; 729 wait_queue_head_t sd_log_flush_wait; 730 int sd_log_error; 731 732 unsigned int sd_log_flush_head; 733 u64 sd_log_flush_wrapped; 734 735 spinlock_t sd_ail_lock; 736 struct list_head sd_ail1_list; 737 struct list_head sd_ail2_list; 738 739 /* Replay stuff */ 740 741 struct list_head sd_revoke_list; 742 unsigned int sd_replay_tail; 743 744 unsigned int sd_found_blocks; 745 unsigned int sd_found_revokes; 746 unsigned int sd_replayed_blocks; 747 748 /* For quiescing the filesystem */ 749 750 struct gfs2_holder sd_freeze_gh; 751 struct mutex sd_freeze_lock; 752 unsigned int sd_freeze_count; 753 754 char sd_fsname[GFS2_FSNAME_LEN]; 755 char sd_table_name[GFS2_FSNAME_LEN]; 756 char sd_proto_name[GFS2_FSNAME_LEN]; 757 758 /* Debugging crud */ 759 760 unsigned long sd_last_warning; 761 struct dentry *debugfs_dir; /* debugfs directory */ 762 struct dentry *debugfs_dentry_glocks; 763 struct dentry *debugfs_dentry_glstats; 764 struct dentry *debugfs_dentry_sbstats; 765 }; 766 767 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 768 { 769 gl->gl_stats.stats[which]++; 770 } 771 772 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 773 { 774 const struct gfs2_sbd *sdp = gl->gl_sbd; 775 preempt_disable(); 776 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 777 preempt_enable(); 778 } 779 780 #endif /* __INCORE_DOT_H__ */ 781 782