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 23 #define DIO_WAIT 0x00000010 24 #define DIO_METADATA 0x00000020 25 26 struct gfs2_log_operations; 27 struct gfs2_log_element; 28 struct gfs2_holder; 29 struct gfs2_glock; 30 struct gfs2_quota_data; 31 struct gfs2_trans; 32 struct gfs2_ail; 33 struct gfs2_jdesc; 34 struct gfs2_sbd; 35 struct lm_lockops; 36 37 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); 38 39 struct gfs2_log_header_host { 40 u64 lh_sequence; /* Sequence number of this transaction */ 41 u32 lh_flags; /* GFS2_LOG_HEAD_... */ 42 u32 lh_tail; /* Block number of log tail */ 43 u32 lh_blkno; 44 u32 lh_hash; 45 }; 46 47 /* 48 * Structure of operations that are associated with each 49 * type of element in the log. 50 */ 51 52 struct gfs2_log_operations { 53 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le); 54 void (*lo_before_commit) (struct gfs2_sbd *sdp); 55 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); 56 void (*lo_before_scan) (struct gfs2_jdesc *jd, 57 struct gfs2_log_header_host *head, int pass); 58 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, 59 struct gfs2_log_descriptor *ld, __be64 *ptr, 60 int pass); 61 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); 62 const char *lo_name; 63 }; 64 65 struct gfs2_log_element { 66 struct list_head le_list; 67 const struct gfs2_log_operations *le_ops; 68 }; 69 70 #define GBF_FULL 1 71 72 struct gfs2_bitmap { 73 struct buffer_head *bi_bh; 74 char *bi_clone; 75 unsigned long bi_flags; 76 u32 bi_offset; 77 u32 bi_start; 78 u32 bi_len; 79 }; 80 81 struct gfs2_rgrpd { 82 struct rb_node rd_node; /* Link with superblock */ 83 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 84 u64 rd_addr; /* grp block disk address */ 85 u64 rd_data0; /* first data location */ 86 u32 rd_length; /* length of rgrp header in fs blocks */ 87 u32 rd_data; /* num of data blocks in rgrp */ 88 u32 rd_bitbytes; /* number of bytes in data bitmaps */ 89 u32 rd_free; 90 u32 rd_free_clone; 91 u32 rd_dinodes; 92 u64 rd_igeneration; 93 struct gfs2_bitmap *rd_bits; 94 struct gfs2_sbd *rd_sbd; 95 u32 rd_last_alloc; 96 u32 rd_flags; 97 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 98 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 99 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 100 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 101 }; 102 103 enum gfs2_state_bits { 104 BH_Pinned = BH_PrivateStart, 105 BH_Escaped = BH_PrivateStart + 1, 106 BH_Zeronew = BH_PrivateStart + 2, 107 }; 108 109 BUFFER_FNS(Pinned, pinned) 110 TAS_BUFFER_FNS(Pinned, pinned) 111 BUFFER_FNS(Escaped, escaped) 112 TAS_BUFFER_FNS(Escaped, escaped) 113 BUFFER_FNS(Zeronew, zeronew) 114 TAS_BUFFER_FNS(Zeronew, zeronew) 115 116 struct gfs2_bufdata { 117 struct buffer_head *bd_bh; 118 struct gfs2_glock *bd_gl; 119 120 union { 121 struct list_head list_tr; 122 u64 blkno; 123 } u; 124 #define bd_list_tr u.list_tr 125 #define bd_blkno u.blkno 126 127 struct gfs2_log_element bd_le; 128 129 struct gfs2_ail *bd_ail; 130 struct list_head bd_ail_st_list; 131 struct list_head bd_ail_gl_list; 132 }; 133 134 /* 135 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 136 * prefix of lock_dlm_ gets awkward. 137 */ 138 139 #define GDLM_STRNAME_BYTES 25 140 #define GDLM_LVB_SIZE 32 141 142 /* 143 * ls_recover_flags: 144 * 145 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 146 * held by failed nodes whose journals need recovery. Those locks should 147 * only be used for journal recovery until the journal recovery is done. 148 * This is set by the dlm recover_prep callback and cleared by the 149 * gfs2_control thread when journal recovery is complete. To avoid 150 * races between recover_prep setting and gfs2_control clearing, recover_spin 151 * is held while changing this bit and reading/writing recover_block 152 * and recover_start. 153 * 154 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 155 * 156 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 157 * recovery of all journals before allowing other nodes to mount the fs. 158 * This is cleared when FIRST_MOUNT_DONE is set. 159 * 160 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 161 * recovery of all journals, and now allows other nodes to mount the fs. 162 * 163 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 164 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 165 * control clearing BLOCK_LOCKS for further recoveries. 166 * 167 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 168 * 169 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 170 * and recover_done(), i.e. set while recover_block == recover_start. 171 */ 172 173 enum { 174 DFL_BLOCK_LOCKS = 0, 175 DFL_NO_DLM_OPS = 1, 176 DFL_FIRST_MOUNT = 2, 177 DFL_FIRST_MOUNT_DONE = 3, 178 DFL_MOUNT_DONE = 4, 179 DFL_UNMOUNT = 5, 180 DFL_DLM_RECOVERY = 6, 181 }; 182 183 struct lm_lockname { 184 u64 ln_number; 185 unsigned int ln_type; 186 }; 187 188 #define lm_name_equal(name1, name2) \ 189 (((name1)->ln_number == (name2)->ln_number) && \ 190 ((name1)->ln_type == (name2)->ln_type)) 191 192 193 struct gfs2_glock_operations { 194 void (*go_xmote_th) (struct gfs2_glock *gl); 195 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 196 void (*go_inval) (struct gfs2_glock *gl, int flags); 197 int (*go_demote_ok) (const struct gfs2_glock *gl); 198 int (*go_lock) (struct gfs2_holder *gh); 199 void (*go_unlock) (struct gfs2_holder *gh); 200 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 201 void (*go_callback) (struct gfs2_glock *gl); 202 const int go_type; 203 const unsigned long go_flags; 204 #define GLOF_ASPACE 1 205 }; 206 207 enum { 208 /* States */ 209 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 210 HIF_FIRST = 7, 211 HIF_WAIT = 10, 212 }; 213 214 struct gfs2_holder { 215 struct list_head gh_list; 216 217 struct gfs2_glock *gh_gl; 218 struct pid *gh_owner_pid; 219 unsigned int gh_state; 220 unsigned gh_flags; 221 222 int gh_error; 223 unsigned long gh_iflags; /* HIF_... */ 224 unsigned long gh_ip; 225 }; 226 227 enum { 228 GLF_LOCK = 1, 229 GLF_DEMOTE = 3, 230 GLF_PENDING_DEMOTE = 4, 231 GLF_DEMOTE_IN_PROGRESS = 5, 232 GLF_DIRTY = 6, 233 GLF_LFLUSH = 7, 234 GLF_INVALIDATE_IN_PROGRESS = 8, 235 GLF_REPLY_PENDING = 9, 236 GLF_INITIAL = 10, 237 GLF_FROZEN = 11, 238 GLF_QUEUED = 12, 239 GLF_LRU = 13, 240 GLF_OBJECT = 14, /* Used only for tracing */ 241 }; 242 243 struct gfs2_glock { 244 struct hlist_bl_node gl_list; 245 unsigned long gl_flags; /* GLF_... */ 246 struct lm_lockname gl_name; 247 atomic_t gl_ref; 248 249 spinlock_t gl_spin; 250 251 /* State fields protected by gl_spin */ 252 unsigned int gl_state:2, /* Current state */ 253 gl_target:2, /* Target state */ 254 gl_demote_state:2, /* State requested by remote node */ 255 gl_req:2, /* State in last dlm request */ 256 gl_reply:8; /* Last reply from the dlm */ 257 258 unsigned int gl_hash; 259 unsigned long gl_demote_time; /* time of first demote request */ 260 long gl_hold_time; 261 struct list_head gl_holders; 262 263 const struct gfs2_glock_operations *gl_ops; 264 char gl_strname[GDLM_STRNAME_BYTES]; 265 struct dlm_lksb gl_lksb; 266 char gl_lvb[32]; 267 unsigned long gl_tchange; 268 void *gl_object; 269 270 struct list_head gl_lru; 271 272 struct gfs2_sbd *gl_sbd; 273 274 struct list_head gl_ail_list; 275 atomic_t gl_ail_count; 276 atomic_t gl_revokes; 277 struct delayed_work gl_work; 278 struct work_struct gl_delete; 279 struct rcu_head gl_rcu; 280 }; 281 282 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 283 284 struct gfs2_qadata { /* quota allocation data */ 285 /* Quota stuff */ 286 struct gfs2_quota_data *qa_qd[2*MAXQUOTAS]; 287 struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS]; 288 unsigned int qa_qd_num; 289 }; 290 291 struct gfs2_blkreserv { 292 u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */ 293 struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */ 294 }; 295 296 enum { 297 GIF_INVALID = 0, 298 GIF_QD_LOCKED = 1, 299 GIF_ALLOC_FAILED = 2, 300 GIF_SW_PAGED = 3, 301 }; 302 303 304 struct gfs2_inode { 305 struct inode i_inode; 306 u64 i_no_addr; 307 u64 i_no_formal_ino; 308 u64 i_generation; 309 u64 i_eattr; 310 unsigned long i_flags; /* GIF_... */ 311 struct gfs2_glock *i_gl; /* Move into i_gh? */ 312 struct gfs2_holder i_iopen_gh; 313 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 314 struct gfs2_qadata *i_qadata; /* quota allocation data */ 315 struct gfs2_blkreserv *i_res; /* resource group block reservation */ 316 struct gfs2_rgrpd *i_rgd; 317 u64 i_goal; /* goal block for allocations */ 318 struct rw_semaphore i_rw_mutex; 319 struct list_head i_trunc_list; 320 __be64 *i_hash_cache; 321 u32 i_entries; 322 u32 i_diskflags; 323 u8 i_height; 324 u8 i_depth; 325 }; 326 327 /* 328 * Since i_inode is the first element of struct gfs2_inode, 329 * this is effectively a cast. 330 */ 331 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 332 { 333 return container_of(inode, struct gfs2_inode, i_inode); 334 } 335 336 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 337 { 338 return inode->i_sb->s_fs_info; 339 } 340 341 struct gfs2_file { 342 struct mutex f_fl_mutex; 343 struct gfs2_holder f_fl_gh; 344 }; 345 346 struct gfs2_revoke_replay { 347 struct list_head rr_list; 348 u64 rr_blkno; 349 unsigned int rr_where; 350 }; 351 352 enum { 353 QDF_USER = 0, 354 QDF_CHANGE = 1, 355 QDF_LOCKED = 2, 356 QDF_REFRESH = 3, 357 }; 358 359 struct gfs2_quota_data { 360 struct list_head qd_list; 361 struct list_head qd_reclaim; 362 363 atomic_t qd_count; 364 365 u32 qd_id; 366 unsigned long qd_flags; /* QDF_... */ 367 368 s64 qd_change; 369 s64 qd_change_sync; 370 371 unsigned int qd_slot; 372 unsigned int qd_slot_count; 373 374 struct buffer_head *qd_bh; 375 struct gfs2_quota_change *qd_bh_qc; 376 unsigned int qd_bh_count; 377 378 struct gfs2_glock *qd_gl; 379 struct gfs2_quota_lvb qd_qb; 380 381 u64 qd_sync_gen; 382 unsigned long qd_last_warn; 383 }; 384 385 struct gfs2_trans { 386 unsigned long tr_ip; 387 388 unsigned int tr_blocks; 389 unsigned int tr_revokes; 390 unsigned int tr_reserved; 391 392 struct gfs2_holder tr_t_gh; 393 394 int tr_touched; 395 396 unsigned int tr_num_buf; 397 unsigned int tr_num_buf_new; 398 unsigned int tr_num_databuf_new; 399 unsigned int tr_num_buf_rm; 400 unsigned int tr_num_databuf_rm; 401 struct list_head tr_list_buf; 402 403 unsigned int tr_num_revoke; 404 unsigned int tr_num_revoke_rm; 405 }; 406 407 struct gfs2_ail { 408 struct list_head ai_list; 409 410 unsigned int ai_first; 411 struct list_head ai_ail1_list; 412 struct list_head ai_ail2_list; 413 }; 414 415 struct gfs2_journal_extent { 416 struct list_head extent_list; 417 418 unsigned int lblock; /* First logical block */ 419 u64 dblock; /* First disk block */ 420 u64 blocks; 421 }; 422 423 struct gfs2_jdesc { 424 struct list_head jd_list; 425 struct list_head extent_list; 426 struct work_struct jd_work; 427 struct inode *jd_inode; 428 unsigned long jd_flags; 429 #define JDF_RECOVERY 1 430 unsigned int jd_jid; 431 unsigned int jd_blocks; 432 int jd_recover_error; 433 }; 434 435 struct gfs2_statfs_change_host { 436 s64 sc_total; 437 s64 sc_free; 438 s64 sc_dinodes; 439 }; 440 441 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 442 #define GFS2_QUOTA_OFF 0 443 #define GFS2_QUOTA_ACCOUNT 1 444 #define GFS2_QUOTA_ON 2 445 446 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 447 #define GFS2_DATA_WRITEBACK 1 448 #define GFS2_DATA_ORDERED 2 449 450 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 451 #define GFS2_ERRORS_WITHDRAW 0 452 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 453 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 454 #define GFS2_ERRORS_PANIC 3 455 456 struct gfs2_args { 457 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 458 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 459 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 460 unsigned int ar_spectator:1; /* Don't get a journal */ 461 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 462 unsigned int ar_debug:1; /* Oops on errors */ 463 unsigned int ar_posix_acl:1; /* Enable posix acls */ 464 unsigned int ar_quota:2; /* off/account/on */ 465 unsigned int ar_suiddir:1; /* suiddir support */ 466 unsigned int ar_data:2; /* ordered/writeback */ 467 unsigned int ar_meta:1; /* mount metafs */ 468 unsigned int ar_discard:1; /* discard requests */ 469 unsigned int ar_errors:2; /* errors=withdraw | panic */ 470 unsigned int ar_nobarrier:1; /* do not send barriers */ 471 int ar_commit; /* Commit interval */ 472 int ar_statfs_quantum; /* The fast statfs interval */ 473 int ar_quota_quantum; /* The quota interval */ 474 int ar_statfs_percent; /* The % change to force sync */ 475 }; 476 477 struct gfs2_tune { 478 spinlock_t gt_spin; 479 480 unsigned int gt_logd_secs; 481 482 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ 483 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 484 unsigned int gt_quota_scale_num; /* Numerator */ 485 unsigned int gt_quota_scale_den; /* Denominator */ 486 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 487 unsigned int gt_new_files_jdata; 488 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 489 unsigned int gt_complain_secs; 490 unsigned int gt_statfs_quantum; 491 unsigned int gt_statfs_slow; 492 }; 493 494 enum { 495 SDF_JOURNAL_CHECKED = 0, 496 SDF_JOURNAL_LIVE = 1, 497 SDF_SHUTDOWN = 2, 498 SDF_NOBARRIERS = 3, 499 SDF_NORECOVERY = 4, 500 SDF_DEMOTE = 5, 501 SDF_NOJOURNALID = 6, 502 SDF_RORECOVERY = 7, /* read only recovery */ 503 }; 504 505 #define GFS2_FSNAME_LEN 256 506 507 struct gfs2_inum_host { 508 u64 no_formal_ino; 509 u64 no_addr; 510 }; 511 512 struct gfs2_sb_host { 513 u32 sb_magic; 514 u32 sb_type; 515 u32 sb_format; 516 517 u32 sb_fs_format; 518 u32 sb_multihost_format; 519 u32 sb_bsize; 520 u32 sb_bsize_shift; 521 522 struct gfs2_inum_host sb_master_dir; 523 struct gfs2_inum_host sb_root_dir; 524 525 char sb_lockproto[GFS2_LOCKNAME_LEN]; 526 char sb_locktable[GFS2_LOCKNAME_LEN]; 527 }; 528 529 /* 530 * lm_mount() return values 531 * 532 * ls_jid - the journal ID this node should use 533 * ls_first - this node is the first to mount the file system 534 * ls_lockspace - lock module's context for this file system 535 * ls_ops - lock module's functions 536 */ 537 538 struct lm_lockstruct { 539 int ls_jid; 540 unsigned int ls_first; 541 unsigned int ls_nodir; 542 const struct lm_lockops *ls_ops; 543 dlm_lockspace_t *ls_dlm; 544 545 int ls_recover_jid_done; /* These two are deprecated, */ 546 int ls_recover_jid_status; /* used previously by gfs_controld */ 547 548 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 549 struct dlm_lksb ls_control_lksb; /* control_lock */ 550 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 551 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 552 553 spinlock_t ls_recover_spin; /* protects following fields */ 554 unsigned long ls_recover_flags; /* DFL_ */ 555 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 556 uint32_t ls_recover_start; /* gen in last recover_done cb */ 557 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 558 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 559 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 560 uint32_t *ls_recover_result; /* result of last jid recovery */ 561 }; 562 563 struct gfs2_sbd { 564 struct super_block *sd_vfs; 565 struct kobject sd_kobj; 566 unsigned long sd_flags; /* SDF_... */ 567 struct gfs2_sb_host sd_sb; 568 569 /* Constants computed on mount */ 570 571 u32 sd_fsb2bb; 572 u32 sd_fsb2bb_shift; 573 u32 sd_diptrs; /* Number of pointers in a dinode */ 574 u32 sd_inptrs; /* Number of pointers in a indirect block */ 575 u32 sd_jbsize; /* Size of a journaled data block */ 576 u32 sd_hash_bsize; /* sizeof(exhash block) */ 577 u32 sd_hash_bsize_shift; 578 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 579 u32 sd_qc_per_block; 580 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 581 u32 sd_max_height; /* Max height of a file's metadata tree */ 582 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 583 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 584 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 585 586 struct gfs2_args sd_args; /* Mount arguments */ 587 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 588 589 /* Lock Stuff */ 590 591 struct lm_lockstruct sd_lockstruct; 592 struct gfs2_holder sd_live_gh; 593 struct gfs2_glock *sd_rename_gl; 594 struct gfs2_glock *sd_trans_gl; 595 wait_queue_head_t sd_glock_wait; 596 atomic_t sd_glock_disposal; 597 struct completion sd_locking_init; 598 struct delayed_work sd_control_work; 599 600 /* Inode Stuff */ 601 602 struct dentry *sd_master_dir; 603 struct dentry *sd_root_dir; 604 605 struct inode *sd_jindex; 606 struct inode *sd_statfs_inode; 607 struct inode *sd_sc_inode; 608 struct inode *sd_qc_inode; 609 struct inode *sd_rindex; 610 struct inode *sd_quota_inode; 611 612 /* StatFS stuff */ 613 614 spinlock_t sd_statfs_spin; 615 struct gfs2_statfs_change_host sd_statfs_master; 616 struct gfs2_statfs_change_host sd_statfs_local; 617 int sd_statfs_force_sync; 618 619 /* Resource group stuff */ 620 621 int sd_rindex_uptodate; 622 spinlock_t sd_rindex_spin; 623 struct mutex sd_rindex_mutex; 624 struct rb_root sd_rindex_tree; 625 unsigned int sd_rgrps; 626 unsigned int sd_max_rg_data; 627 628 /* Journal index stuff */ 629 630 struct list_head sd_jindex_list; 631 spinlock_t sd_jindex_spin; 632 struct mutex sd_jindex_mutex; 633 unsigned int sd_journals; 634 635 struct gfs2_jdesc *sd_jdesc; 636 struct gfs2_holder sd_journal_gh; 637 struct gfs2_holder sd_jinode_gh; 638 639 struct gfs2_holder sd_sc_gh; 640 struct gfs2_holder sd_qc_gh; 641 642 /* Daemon stuff */ 643 644 struct task_struct *sd_logd_process; 645 struct task_struct *sd_quotad_process; 646 647 /* Quota stuff */ 648 649 struct list_head sd_quota_list; 650 atomic_t sd_quota_count; 651 struct mutex sd_quota_mutex; 652 wait_queue_head_t sd_quota_wait; 653 struct list_head sd_trunc_list; 654 spinlock_t sd_trunc_lock; 655 656 unsigned int sd_quota_slots; 657 unsigned int sd_quota_chunks; 658 unsigned char **sd_quota_bitmap; 659 660 u64 sd_quota_sync_gen; 661 662 /* Log stuff */ 663 664 spinlock_t sd_log_lock; 665 666 unsigned int sd_log_blks_reserved; 667 unsigned int sd_log_commited_buf; 668 unsigned int sd_log_commited_databuf; 669 int sd_log_commited_revoke; 670 671 atomic_t sd_log_pinned; 672 unsigned int sd_log_num_buf; 673 unsigned int sd_log_num_revoke; 674 unsigned int sd_log_num_rg; 675 unsigned int sd_log_num_databuf; 676 677 struct list_head sd_log_le_buf; 678 struct list_head sd_log_le_revoke; 679 struct list_head sd_log_le_rg; 680 struct list_head sd_log_le_databuf; 681 struct list_head sd_log_le_ordered; 682 683 atomic_t sd_log_thresh1; 684 atomic_t sd_log_thresh2; 685 atomic_t sd_log_blks_free; 686 wait_queue_head_t sd_log_waitq; 687 wait_queue_head_t sd_logd_waitq; 688 689 u64 sd_log_sequence; 690 unsigned int sd_log_head; 691 unsigned int sd_log_tail; 692 int sd_log_idle; 693 694 struct rw_semaphore sd_log_flush_lock; 695 atomic_t sd_log_in_flight; 696 wait_queue_head_t sd_log_flush_wait; 697 698 unsigned int sd_log_flush_head; 699 u64 sd_log_flush_wrapped; 700 701 spinlock_t sd_ail_lock; 702 struct list_head sd_ail1_list; 703 struct list_head sd_ail2_list; 704 705 /* Replay stuff */ 706 707 struct list_head sd_revoke_list; 708 unsigned int sd_replay_tail; 709 710 unsigned int sd_found_blocks; 711 unsigned int sd_found_revokes; 712 unsigned int sd_replayed_blocks; 713 714 /* For quiescing the filesystem */ 715 716 struct gfs2_holder sd_freeze_gh; 717 struct mutex sd_freeze_lock; 718 unsigned int sd_freeze_count; 719 720 char sd_fsname[GFS2_FSNAME_LEN]; 721 char sd_table_name[GFS2_FSNAME_LEN]; 722 char sd_proto_name[GFS2_FSNAME_LEN]; 723 724 /* Debugging crud */ 725 726 unsigned long sd_last_warning; 727 struct dentry *debugfs_dir; /* debugfs directory */ 728 struct dentry *debugfs_dentry_glocks; /* for debugfs */ 729 }; 730 731 #endif /* __INCORE_DOT_H__ */ 732 733