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_free_clone; 88 u32 rd_dinodes; 89 u64 rd_igeneration; 90 struct gfs2_bitmap *rd_bits; 91 struct gfs2_sbd *rd_sbd; 92 u32 rd_last_alloc; 93 u32 rd_flags; 94 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 95 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 96 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 97 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 98 }; 99 100 enum gfs2_state_bits { 101 BH_Pinned = BH_PrivateStart, 102 BH_Escaped = BH_PrivateStart + 1, 103 BH_Zeronew = BH_PrivateStart + 2, 104 }; 105 106 BUFFER_FNS(Pinned, pinned) 107 TAS_BUFFER_FNS(Pinned, pinned) 108 BUFFER_FNS(Escaped, escaped) 109 TAS_BUFFER_FNS(Escaped, escaped) 110 BUFFER_FNS(Zeronew, zeronew) 111 TAS_BUFFER_FNS(Zeronew, zeronew) 112 113 struct gfs2_bufdata { 114 struct buffer_head *bd_bh; 115 struct gfs2_glock *bd_gl; 116 u64 bd_blkno; 117 118 struct list_head bd_list; 119 const struct gfs2_log_operations *bd_ops; 120 121 struct gfs2_ail *bd_ail; 122 struct list_head bd_ail_st_list; 123 struct list_head bd_ail_gl_list; 124 }; 125 126 /* 127 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 128 * prefix of lock_dlm_ gets awkward. 129 */ 130 131 #define GDLM_STRNAME_BYTES 25 132 #define GDLM_LVB_SIZE 32 133 134 /* 135 * ls_recover_flags: 136 * 137 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 138 * held by failed nodes whose journals need recovery. Those locks should 139 * only be used for journal recovery until the journal recovery is done. 140 * This is set by the dlm recover_prep callback and cleared by the 141 * gfs2_control thread when journal recovery is complete. To avoid 142 * races between recover_prep setting and gfs2_control clearing, recover_spin 143 * is held while changing this bit and reading/writing recover_block 144 * and recover_start. 145 * 146 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 147 * 148 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 149 * recovery of all journals before allowing other nodes to mount the fs. 150 * This is cleared when FIRST_MOUNT_DONE is set. 151 * 152 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 153 * recovery of all journals, and now allows other nodes to mount the fs. 154 * 155 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 156 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 157 * control clearing BLOCK_LOCKS for further recoveries. 158 * 159 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 160 * 161 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 162 * and recover_done(), i.e. set while recover_block == recover_start. 163 */ 164 165 enum { 166 DFL_BLOCK_LOCKS = 0, 167 DFL_NO_DLM_OPS = 1, 168 DFL_FIRST_MOUNT = 2, 169 DFL_FIRST_MOUNT_DONE = 3, 170 DFL_MOUNT_DONE = 4, 171 DFL_UNMOUNT = 5, 172 DFL_DLM_RECOVERY = 6, 173 }; 174 175 struct lm_lockname { 176 u64 ln_number; 177 unsigned int ln_type; 178 }; 179 180 #define lm_name_equal(name1, name2) \ 181 (((name1)->ln_number == (name2)->ln_number) && \ 182 ((name1)->ln_type == (name2)->ln_type)) 183 184 185 struct gfs2_glock_operations { 186 void (*go_xmote_th) (struct gfs2_glock *gl); 187 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 188 void (*go_inval) (struct gfs2_glock *gl, int flags); 189 int (*go_demote_ok) (const struct gfs2_glock *gl); 190 int (*go_lock) (struct gfs2_holder *gh); 191 void (*go_unlock) (struct gfs2_holder *gh); 192 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 193 void (*go_callback) (struct gfs2_glock *gl); 194 const int go_type; 195 const unsigned long go_flags; 196 #define GLOF_ASPACE 1 197 }; 198 199 enum { 200 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 201 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 202 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 203 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 204 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 205 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 206 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 207 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 208 GFS2_NR_LKSTATS 209 }; 210 211 struct gfs2_lkstats { 212 s64 stats[GFS2_NR_LKSTATS]; 213 }; 214 215 enum { 216 /* States */ 217 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 218 HIF_FIRST = 7, 219 HIF_WAIT = 10, 220 }; 221 222 struct gfs2_holder { 223 struct list_head gh_list; 224 225 struct gfs2_glock *gh_gl; 226 struct pid *gh_owner_pid; 227 unsigned int gh_state; 228 unsigned gh_flags; 229 230 int gh_error; 231 unsigned long gh_iflags; /* HIF_... */ 232 unsigned long gh_ip; 233 }; 234 235 enum { 236 GLF_LOCK = 1, 237 GLF_DEMOTE = 3, 238 GLF_PENDING_DEMOTE = 4, 239 GLF_DEMOTE_IN_PROGRESS = 5, 240 GLF_DIRTY = 6, 241 GLF_LFLUSH = 7, 242 GLF_INVALIDATE_IN_PROGRESS = 8, 243 GLF_REPLY_PENDING = 9, 244 GLF_INITIAL = 10, 245 GLF_FROZEN = 11, 246 GLF_QUEUED = 12, 247 GLF_LRU = 13, 248 GLF_OBJECT = 14, /* Used only for tracing */ 249 GLF_BLOCKING = 15, 250 }; 251 252 struct gfs2_glock { 253 struct hlist_bl_node gl_list; 254 struct gfs2_sbd *gl_sbd; 255 unsigned long gl_flags; /* GLF_... */ 256 struct lm_lockname gl_name; 257 atomic_t gl_ref; 258 259 spinlock_t gl_spin; 260 261 /* State fields protected by gl_spin */ 262 unsigned int gl_state:2, /* Current state */ 263 gl_target:2, /* Target state */ 264 gl_demote_state:2, /* State requested by remote node */ 265 gl_req:2, /* State in last dlm request */ 266 gl_reply:8; /* Last reply from the dlm */ 267 268 unsigned int gl_hash; 269 unsigned long gl_demote_time; /* time of first demote request */ 270 long gl_hold_time; 271 struct list_head gl_holders; 272 273 const struct gfs2_glock_operations *gl_ops; 274 ktime_t gl_dstamp; 275 struct gfs2_lkstats gl_stats; 276 struct dlm_lksb gl_lksb; 277 char gl_lvb[32]; 278 unsigned long gl_tchange; 279 void *gl_object; 280 281 struct list_head gl_lru; 282 struct list_head gl_ail_list; 283 atomic_t gl_ail_count; 284 atomic_t gl_revokes; 285 struct delayed_work gl_work; 286 struct work_struct gl_delete; 287 struct rcu_head gl_rcu; 288 }; 289 290 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 291 292 struct gfs2_qadata { /* quota allocation data */ 293 /* Quota stuff */ 294 struct gfs2_quota_data *qa_qd[2*MAXQUOTAS]; 295 struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS]; 296 unsigned int qa_qd_num; 297 }; 298 299 struct gfs2_blkreserv { 300 u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */ 301 struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */ 302 }; 303 304 enum { 305 GIF_INVALID = 0, 306 GIF_QD_LOCKED = 1, 307 GIF_ALLOC_FAILED = 2, 308 GIF_SW_PAGED = 3, 309 }; 310 311 312 struct gfs2_inode { 313 struct inode i_inode; 314 u64 i_no_addr; 315 u64 i_no_formal_ino; 316 u64 i_generation; 317 u64 i_eattr; 318 unsigned long i_flags; /* GIF_... */ 319 struct gfs2_glock *i_gl; /* Move into i_gh? */ 320 struct gfs2_holder i_iopen_gh; 321 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 322 struct gfs2_qadata *i_qadata; /* quota allocation data */ 323 struct gfs2_blkreserv *i_res; /* resource group block reservation */ 324 struct gfs2_rgrpd *i_rgd; 325 u64 i_goal; /* goal block for allocations */ 326 struct rw_semaphore i_rw_mutex; 327 struct list_head i_trunc_list; 328 __be64 *i_hash_cache; 329 u32 i_entries; 330 u32 i_diskflags; 331 u8 i_height; 332 u8 i_depth; 333 }; 334 335 /* 336 * Since i_inode is the first element of struct gfs2_inode, 337 * this is effectively a cast. 338 */ 339 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 340 { 341 return container_of(inode, struct gfs2_inode, i_inode); 342 } 343 344 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 345 { 346 return inode->i_sb->s_fs_info; 347 } 348 349 struct gfs2_file { 350 struct mutex f_fl_mutex; 351 struct gfs2_holder f_fl_gh; 352 }; 353 354 struct gfs2_revoke_replay { 355 struct list_head rr_list; 356 u64 rr_blkno; 357 unsigned int rr_where; 358 }; 359 360 enum { 361 QDF_USER = 0, 362 QDF_CHANGE = 1, 363 QDF_LOCKED = 2, 364 QDF_REFRESH = 3, 365 }; 366 367 struct gfs2_quota_data { 368 struct list_head qd_list; 369 struct list_head qd_reclaim; 370 371 atomic_t qd_count; 372 373 u32 qd_id; 374 unsigned long qd_flags; /* QDF_... */ 375 376 s64 qd_change; 377 s64 qd_change_sync; 378 379 unsigned int qd_slot; 380 unsigned int qd_slot_count; 381 382 struct buffer_head *qd_bh; 383 struct gfs2_quota_change *qd_bh_qc; 384 unsigned int qd_bh_count; 385 386 struct gfs2_glock *qd_gl; 387 struct gfs2_quota_lvb qd_qb; 388 389 u64 qd_sync_gen; 390 unsigned long qd_last_warn; 391 }; 392 393 struct gfs2_trans { 394 unsigned long tr_ip; 395 396 unsigned int tr_blocks; 397 unsigned int tr_revokes; 398 unsigned int tr_reserved; 399 400 struct gfs2_holder tr_t_gh; 401 402 int tr_touched; 403 404 unsigned int tr_num_buf_new; 405 unsigned int tr_num_databuf_new; 406 unsigned int tr_num_buf_rm; 407 unsigned int tr_num_databuf_rm; 408 unsigned int tr_num_revoke; 409 unsigned int tr_num_revoke_rm; 410 }; 411 412 struct gfs2_ail { 413 struct list_head ai_list; 414 415 unsigned int ai_first; 416 struct list_head ai_ail1_list; 417 struct list_head ai_ail2_list; 418 }; 419 420 struct gfs2_journal_extent { 421 struct list_head extent_list; 422 423 unsigned int lblock; /* First logical block */ 424 u64 dblock; /* First disk block */ 425 u64 blocks; 426 }; 427 428 struct gfs2_jdesc { 429 struct list_head jd_list; 430 struct list_head extent_list; 431 struct work_struct jd_work; 432 struct inode *jd_inode; 433 unsigned long jd_flags; 434 #define JDF_RECOVERY 1 435 unsigned int jd_jid; 436 unsigned int jd_blocks; 437 int jd_recover_error; 438 }; 439 440 struct gfs2_statfs_change_host { 441 s64 sc_total; 442 s64 sc_free; 443 s64 sc_dinodes; 444 }; 445 446 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 447 #define GFS2_QUOTA_OFF 0 448 #define GFS2_QUOTA_ACCOUNT 1 449 #define GFS2_QUOTA_ON 2 450 451 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 452 #define GFS2_DATA_WRITEBACK 1 453 #define GFS2_DATA_ORDERED 2 454 455 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 456 #define GFS2_ERRORS_WITHDRAW 0 457 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 458 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 459 #define GFS2_ERRORS_PANIC 3 460 461 struct gfs2_args { 462 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 463 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 464 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 465 unsigned int ar_spectator:1; /* Don't get a journal */ 466 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 467 unsigned int ar_debug:1; /* Oops on errors */ 468 unsigned int ar_posix_acl:1; /* Enable posix acls */ 469 unsigned int ar_quota:2; /* off/account/on */ 470 unsigned int ar_suiddir:1; /* suiddir support */ 471 unsigned int ar_data:2; /* ordered/writeback */ 472 unsigned int ar_meta:1; /* mount metafs */ 473 unsigned int ar_discard:1; /* discard requests */ 474 unsigned int ar_errors:2; /* errors=withdraw | panic */ 475 unsigned int ar_nobarrier:1; /* do not send barriers */ 476 int ar_commit; /* Commit interval */ 477 int ar_statfs_quantum; /* The fast statfs interval */ 478 int ar_quota_quantum; /* The quota interval */ 479 int ar_statfs_percent; /* The % change to force sync */ 480 }; 481 482 struct gfs2_tune { 483 spinlock_t gt_spin; 484 485 unsigned int gt_logd_secs; 486 487 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ 488 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 489 unsigned int gt_quota_scale_num; /* Numerator */ 490 unsigned int gt_quota_scale_den; /* Denominator */ 491 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 492 unsigned int gt_new_files_jdata; 493 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 494 unsigned int gt_complain_secs; 495 unsigned int gt_statfs_quantum; 496 unsigned int gt_statfs_slow; 497 }; 498 499 enum { 500 SDF_JOURNAL_CHECKED = 0, 501 SDF_JOURNAL_LIVE = 1, 502 SDF_SHUTDOWN = 2, 503 SDF_NOBARRIERS = 3, 504 SDF_NORECOVERY = 4, 505 SDF_DEMOTE = 5, 506 SDF_NOJOURNALID = 6, 507 SDF_RORECOVERY = 7, /* read only recovery */ 508 }; 509 510 #define GFS2_FSNAME_LEN 256 511 512 struct gfs2_inum_host { 513 u64 no_formal_ino; 514 u64 no_addr; 515 }; 516 517 struct gfs2_sb_host { 518 u32 sb_magic; 519 u32 sb_type; 520 u32 sb_format; 521 522 u32 sb_fs_format; 523 u32 sb_multihost_format; 524 u32 sb_bsize; 525 u32 sb_bsize_shift; 526 527 struct gfs2_inum_host sb_master_dir; 528 struct gfs2_inum_host sb_root_dir; 529 530 char sb_lockproto[GFS2_LOCKNAME_LEN]; 531 char sb_locktable[GFS2_LOCKNAME_LEN]; 532 }; 533 534 /* 535 * lm_mount() return values 536 * 537 * ls_jid - the journal ID this node should use 538 * ls_first - this node is the first to mount the file system 539 * ls_lockspace - lock module's context for this file system 540 * ls_ops - lock module's functions 541 */ 542 543 struct lm_lockstruct { 544 int ls_jid; 545 unsigned int ls_first; 546 const struct lm_lockops *ls_ops; 547 dlm_lockspace_t *ls_dlm; 548 549 int ls_recover_jid_done; /* These two are deprecated, */ 550 int ls_recover_jid_status; /* used previously by gfs_controld */ 551 552 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 553 struct dlm_lksb ls_control_lksb; /* control_lock */ 554 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 555 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 556 557 spinlock_t ls_recover_spin; /* protects following fields */ 558 unsigned long ls_recover_flags; /* DFL_ */ 559 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 560 uint32_t ls_recover_start; /* gen in last recover_done cb */ 561 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 562 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 563 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 564 uint32_t *ls_recover_result; /* result of last jid recovery */ 565 }; 566 567 struct gfs2_pcpu_lkstats { 568 /* One struct for each glock type */ 569 struct gfs2_lkstats lkstats[10]; 570 }; 571 572 struct gfs2_sbd { 573 struct super_block *sd_vfs; 574 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 575 struct kobject sd_kobj; 576 unsigned long sd_flags; /* SDF_... */ 577 struct gfs2_sb_host sd_sb; 578 579 /* Constants computed on mount */ 580 581 u32 sd_fsb2bb; 582 u32 sd_fsb2bb_shift; 583 u32 sd_diptrs; /* Number of pointers in a dinode */ 584 u32 sd_inptrs; /* Number of pointers in a indirect block */ 585 u32 sd_jbsize; /* Size of a journaled data block */ 586 u32 sd_hash_bsize; /* sizeof(exhash block) */ 587 u32 sd_hash_bsize_shift; 588 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 589 u32 sd_qc_per_block; 590 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 591 u32 sd_max_height; /* Max height of a file's metadata tree */ 592 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 593 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 594 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 595 596 struct gfs2_args sd_args; /* Mount arguments */ 597 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 598 599 /* Lock Stuff */ 600 601 struct lm_lockstruct sd_lockstruct; 602 struct gfs2_holder sd_live_gh; 603 struct gfs2_glock *sd_rename_gl; 604 struct gfs2_glock *sd_trans_gl; 605 wait_queue_head_t sd_glock_wait; 606 atomic_t sd_glock_disposal; 607 struct completion sd_locking_init; 608 struct delayed_work sd_control_work; 609 610 /* Inode Stuff */ 611 612 struct dentry *sd_master_dir; 613 struct dentry *sd_root_dir; 614 615 struct inode *sd_jindex; 616 struct inode *sd_statfs_inode; 617 struct inode *sd_sc_inode; 618 struct inode *sd_qc_inode; 619 struct inode *sd_rindex; 620 struct inode *sd_quota_inode; 621 622 /* StatFS stuff */ 623 624 spinlock_t sd_statfs_spin; 625 struct gfs2_statfs_change_host sd_statfs_master; 626 struct gfs2_statfs_change_host sd_statfs_local; 627 int sd_statfs_force_sync; 628 629 /* Resource group stuff */ 630 631 int sd_rindex_uptodate; 632 spinlock_t sd_rindex_spin; 633 struct rb_root sd_rindex_tree; 634 unsigned int sd_rgrps; 635 unsigned int sd_max_rg_data; 636 637 /* Journal index stuff */ 638 639 struct list_head sd_jindex_list; 640 spinlock_t sd_jindex_spin; 641 struct mutex sd_jindex_mutex; 642 unsigned int sd_journals; 643 644 struct gfs2_jdesc *sd_jdesc; 645 struct gfs2_holder sd_journal_gh; 646 struct gfs2_holder sd_jinode_gh; 647 648 struct gfs2_holder sd_sc_gh; 649 struct gfs2_holder sd_qc_gh; 650 651 /* Daemon stuff */ 652 653 struct task_struct *sd_logd_process; 654 struct task_struct *sd_quotad_process; 655 656 /* Quota stuff */ 657 658 struct list_head sd_quota_list; 659 atomic_t sd_quota_count; 660 struct mutex sd_quota_mutex; 661 wait_queue_head_t sd_quota_wait; 662 struct list_head sd_trunc_list; 663 spinlock_t sd_trunc_lock; 664 665 unsigned int sd_quota_slots; 666 unsigned int sd_quota_chunks; 667 unsigned char **sd_quota_bitmap; 668 669 u64 sd_quota_sync_gen; 670 671 /* Log stuff */ 672 673 spinlock_t sd_log_lock; 674 675 unsigned int sd_log_blks_reserved; 676 unsigned int sd_log_commited_buf; 677 unsigned int sd_log_commited_databuf; 678 int sd_log_commited_revoke; 679 680 atomic_t sd_log_pinned; 681 unsigned int sd_log_num_buf; 682 unsigned int sd_log_num_revoke; 683 unsigned int sd_log_num_rg; 684 unsigned int sd_log_num_databuf; 685 686 struct list_head sd_log_le_buf; 687 struct list_head sd_log_le_revoke; 688 struct list_head sd_log_le_databuf; 689 struct list_head sd_log_le_ordered; 690 691 atomic_t sd_log_thresh1; 692 atomic_t sd_log_thresh2; 693 atomic_t sd_log_blks_free; 694 wait_queue_head_t sd_log_waitq; 695 wait_queue_head_t sd_logd_waitq; 696 697 u64 sd_log_sequence; 698 unsigned int sd_log_head; 699 unsigned int sd_log_tail; 700 int sd_log_idle; 701 702 struct rw_semaphore sd_log_flush_lock; 703 atomic_t sd_log_in_flight; 704 struct bio *sd_log_bio; 705 wait_queue_head_t sd_log_flush_wait; 706 int sd_log_error; 707 708 unsigned int sd_log_flush_head; 709 u64 sd_log_flush_wrapped; 710 711 spinlock_t sd_ail_lock; 712 struct list_head sd_ail1_list; 713 struct list_head sd_ail2_list; 714 715 /* Replay stuff */ 716 717 struct list_head sd_revoke_list; 718 unsigned int sd_replay_tail; 719 720 unsigned int sd_found_blocks; 721 unsigned int sd_found_revokes; 722 unsigned int sd_replayed_blocks; 723 724 /* For quiescing the filesystem */ 725 726 struct gfs2_holder sd_freeze_gh; 727 struct mutex sd_freeze_lock; 728 unsigned int sd_freeze_count; 729 730 char sd_fsname[GFS2_FSNAME_LEN]; 731 char sd_table_name[GFS2_FSNAME_LEN]; 732 char sd_proto_name[GFS2_FSNAME_LEN]; 733 734 /* Debugging crud */ 735 736 unsigned long sd_last_warning; 737 struct dentry *debugfs_dir; /* debugfs directory */ 738 struct dentry *debugfs_dentry_glocks; 739 struct dentry *debugfs_dentry_glstats; 740 struct dentry *debugfs_dentry_sbstats; 741 }; 742 743 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 744 { 745 gl->gl_stats.stats[which]++; 746 } 747 748 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 749 { 750 const struct gfs2_sbd *sdp = gl->gl_sbd; 751 preempt_disable(); 752 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 753 preempt_enable(); 754 } 755 756 #endif /* __INCORE_DOT_H__ */ 757 758