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_jdesc; 35 struct gfs2_sbd; 36 struct lm_lockops; 37 38 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); 39 40 struct gfs2_log_header_host { 41 u64 lh_sequence; /* Sequence number of this transaction */ 42 u32 lh_flags; /* GFS2_LOG_HEAD_... */ 43 u32 lh_tail; /* Block number of log tail */ 44 u32 lh_blkno; 45 u32 lh_hash; 46 }; 47 48 /* 49 * Structure of operations that are associated with each 50 * type of element in the log. 51 */ 52 53 struct gfs2_log_operations { 54 void (*lo_before_commit) (struct gfs2_sbd *sdp); 55 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 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 #define GBF_FULL 1 66 67 struct gfs2_bitmap { 68 struct buffer_head *bi_bh; 69 char *bi_clone; 70 unsigned long bi_flags; 71 u32 bi_offset; 72 u32 bi_start; 73 u32 bi_len; 74 }; 75 76 struct gfs2_rgrpd { 77 struct rb_node rd_node; /* Link with superblock */ 78 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 79 u64 rd_addr; /* grp block disk address */ 80 u64 rd_data0; /* first data location */ 81 u32 rd_length; /* length of rgrp header in fs blocks */ 82 u32 rd_data; /* num of data blocks in rgrp */ 83 u32 rd_bitbytes; /* number of bytes in data bitmaps */ 84 u32 rd_free; 85 u32 rd_reserved; /* number of blocks reserved */ 86 u32 rd_free_clone; 87 u32 rd_dinodes; 88 u64 rd_igeneration; 89 struct gfs2_bitmap *rd_bits; 90 struct gfs2_sbd *rd_sbd; 91 struct gfs2_rgrp_lvb *rd_rgl; 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 spinlock_t rd_rsspin; /* protects reservation related vars */ 99 struct rb_root rd_rstree; /* multi-block reservation tree */ 100 }; 101 102 struct gfs2_rbm { 103 struct gfs2_rgrpd *rgd; 104 struct gfs2_bitmap *bi; /* Bitmap must belong to the rgd */ 105 u32 offset; /* The offset is bitmap relative */ 106 }; 107 108 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 109 { 110 return rbm->rgd->rd_data0 + (rbm->bi->bi_start * GFS2_NBBY) + rbm->offset; 111 } 112 113 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 114 const struct gfs2_rbm *rbm2) 115 { 116 return (rbm1->rgd == rbm2->rgd) && (rbm1->bi == rbm2->bi) && 117 (rbm1->offset == rbm2->offset); 118 } 119 120 enum gfs2_state_bits { 121 BH_Pinned = BH_PrivateStart, 122 BH_Escaped = BH_PrivateStart + 1, 123 BH_Zeronew = BH_PrivateStart + 2, 124 }; 125 126 BUFFER_FNS(Pinned, pinned) 127 TAS_BUFFER_FNS(Pinned, pinned) 128 BUFFER_FNS(Escaped, escaped) 129 TAS_BUFFER_FNS(Escaped, escaped) 130 BUFFER_FNS(Zeronew, zeronew) 131 TAS_BUFFER_FNS(Zeronew, zeronew) 132 133 struct gfs2_bufdata { 134 struct buffer_head *bd_bh; 135 struct gfs2_glock *bd_gl; 136 u64 bd_blkno; 137 138 struct list_head bd_list; 139 const struct gfs2_log_operations *bd_ops; 140 141 struct gfs2_trans *bd_tr; 142 struct list_head bd_ail_st_list; 143 struct list_head bd_ail_gl_list; 144 }; 145 146 /* 147 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 148 * prefix of lock_dlm_ gets awkward. 149 */ 150 151 #define GDLM_STRNAME_BYTES 25 152 #define GDLM_LVB_SIZE 32 153 154 /* 155 * ls_recover_flags: 156 * 157 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 158 * held by failed nodes whose journals need recovery. Those locks should 159 * only be used for journal recovery until the journal recovery is done. 160 * This is set by the dlm recover_prep callback and cleared by the 161 * gfs2_control thread when journal recovery is complete. To avoid 162 * races between recover_prep setting and gfs2_control clearing, recover_spin 163 * is held while changing this bit and reading/writing recover_block 164 * and recover_start. 165 * 166 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 167 * 168 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 169 * recovery of all journals before allowing other nodes to mount the fs. 170 * This is cleared when FIRST_MOUNT_DONE is set. 171 * 172 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 173 * recovery of all journals, and now allows other nodes to mount the fs. 174 * 175 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 176 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 177 * control clearing BLOCK_LOCKS for further recoveries. 178 * 179 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 180 * 181 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 182 * and recover_done(), i.e. set while recover_block == recover_start. 183 */ 184 185 enum { 186 DFL_BLOCK_LOCKS = 0, 187 DFL_NO_DLM_OPS = 1, 188 DFL_FIRST_MOUNT = 2, 189 DFL_FIRST_MOUNT_DONE = 3, 190 DFL_MOUNT_DONE = 4, 191 DFL_UNMOUNT = 5, 192 DFL_DLM_RECOVERY = 6, 193 }; 194 195 struct lm_lockname { 196 u64 ln_number; 197 unsigned int ln_type; 198 }; 199 200 #define lm_name_equal(name1, name2) \ 201 (((name1)->ln_number == (name2)->ln_number) && \ 202 ((name1)->ln_type == (name2)->ln_type)) 203 204 205 struct gfs2_glock_operations { 206 void (*go_sync) (struct gfs2_glock *gl); 207 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 208 void (*go_inval) (struct gfs2_glock *gl, int flags); 209 int (*go_demote_ok) (const struct gfs2_glock *gl); 210 int (*go_lock) (struct gfs2_holder *gh); 211 void (*go_unlock) (struct gfs2_holder *gh); 212 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl); 213 void (*go_callback)(struct gfs2_glock *gl, bool remote); 214 const int go_type; 215 const unsigned long go_flags; 216 #define GLOF_ASPACE 1 217 #define GLOF_LVB 2 218 }; 219 220 enum { 221 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 222 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 223 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 224 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 225 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 226 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 227 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 228 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 229 GFS2_NR_LKSTATS 230 }; 231 232 struct gfs2_lkstats { 233 s64 stats[GFS2_NR_LKSTATS]; 234 }; 235 236 enum { 237 /* States */ 238 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 239 HIF_FIRST = 7, 240 HIF_WAIT = 10, 241 }; 242 243 struct gfs2_holder { 244 struct list_head gh_list; 245 246 struct gfs2_glock *gh_gl; 247 struct pid *gh_owner_pid; 248 unsigned int gh_state; 249 unsigned gh_flags; 250 251 int gh_error; 252 unsigned long gh_iflags; /* HIF_... */ 253 unsigned long gh_ip; 254 }; 255 256 /* Resource group multi-block reservation, in order of appearance: 257 258 Step 1. Function prepares to write, allocates a mb, sets the size hint. 259 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 260 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 261 Step 4. Bits are assigned from the rgrp based on either the reservation 262 or wherever it can. 263 */ 264 265 struct gfs2_blkreserv { 266 /* components used during write (step 1): */ 267 atomic_t rs_sizehint; /* hint of the write size */ 268 269 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */ 270 struct rb_node rs_node; /* link to other block reservations */ 271 struct gfs2_rbm rs_rbm; /* Start of reservation */ 272 u32 rs_free; /* how many blocks are still free */ 273 u64 rs_inum; /* Inode number for reservation */ 274 275 /* ancillary quota stuff */ 276 struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; 277 struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; 278 unsigned int rs_qa_qd_num; 279 }; 280 281 enum { 282 GLF_LOCK = 1, 283 GLF_DEMOTE = 3, 284 GLF_PENDING_DEMOTE = 4, 285 GLF_DEMOTE_IN_PROGRESS = 5, 286 GLF_DIRTY = 6, 287 GLF_LFLUSH = 7, 288 GLF_INVALIDATE_IN_PROGRESS = 8, 289 GLF_REPLY_PENDING = 9, 290 GLF_INITIAL = 10, 291 GLF_FROZEN = 11, 292 GLF_QUEUED = 12, 293 GLF_LRU = 13, 294 GLF_OBJECT = 14, /* Used only for tracing */ 295 GLF_BLOCKING = 15, 296 }; 297 298 struct gfs2_glock { 299 struct hlist_bl_node gl_list; 300 struct gfs2_sbd *gl_sbd; 301 unsigned long gl_flags; /* GLF_... */ 302 struct lm_lockname gl_name; 303 atomic_t gl_ref; 304 305 spinlock_t gl_spin; 306 307 /* State fields protected by gl_spin */ 308 unsigned int gl_state:2, /* Current state */ 309 gl_target:2, /* Target state */ 310 gl_demote_state:2, /* State requested by remote node */ 311 gl_req:2, /* State in last dlm request */ 312 gl_reply:8; /* Last reply from the dlm */ 313 314 unsigned int gl_hash; 315 unsigned long gl_demote_time; /* time of first demote request */ 316 long gl_hold_time; 317 struct list_head gl_holders; 318 319 const struct gfs2_glock_operations *gl_ops; 320 ktime_t gl_dstamp; 321 struct gfs2_lkstats gl_stats; 322 struct dlm_lksb gl_lksb; 323 unsigned long gl_tchange; 324 void *gl_object; 325 326 struct list_head gl_lru; 327 struct list_head gl_ail_list; 328 atomic_t gl_ail_count; 329 atomic_t gl_revokes; 330 struct delayed_work gl_work; 331 struct work_struct gl_delete; 332 struct rcu_head gl_rcu; 333 }; 334 335 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ 336 337 enum { 338 GIF_INVALID = 0, 339 GIF_QD_LOCKED = 1, 340 GIF_ALLOC_FAILED = 2, 341 GIF_SW_PAGED = 3, 342 GIF_ORDERED = 4, 343 }; 344 345 struct gfs2_inode { 346 struct inode i_inode; 347 u64 i_no_addr; 348 u64 i_no_formal_ino; 349 u64 i_generation; 350 u64 i_eattr; 351 unsigned long i_flags; /* GIF_... */ 352 struct gfs2_glock *i_gl; /* Move into i_gh? */ 353 struct gfs2_holder i_iopen_gh; 354 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 355 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */ 356 struct gfs2_rgrpd *i_rgd; 357 u64 i_goal; /* goal block for allocations */ 358 struct rw_semaphore i_rw_mutex; 359 struct list_head i_ordered; 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_CHANGE = 1, 395 QDF_LOCKED = 2, 396 QDF_REFRESH = 3, 397 }; 398 399 struct gfs2_quota_data { 400 struct list_head qd_list; 401 struct list_head qd_reclaim; 402 403 atomic_t qd_count; 404 405 struct kqid qd_id; 406 unsigned long qd_flags; /* QDF_... */ 407 408 s64 qd_change; 409 s64 qd_change_sync; 410 411 unsigned int qd_slot; 412 unsigned int qd_slot_count; 413 414 struct buffer_head *qd_bh; 415 struct gfs2_quota_change *qd_bh_qc; 416 unsigned int qd_bh_count; 417 418 struct gfs2_glock *qd_gl; 419 struct gfs2_quota_lvb qd_qb; 420 421 u64 qd_sync_gen; 422 unsigned long qd_last_warn; 423 }; 424 425 struct gfs2_trans { 426 unsigned long tr_ip; 427 428 unsigned int tr_blocks; 429 unsigned int tr_revokes; 430 unsigned int tr_reserved; 431 432 struct gfs2_holder tr_t_gh; 433 434 int tr_touched; 435 int tr_attached; 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 struct list_head tr_list; 445 446 unsigned int tr_first; 447 struct list_head tr_ail1_list; 448 struct list_head tr_ail2_list; 449 }; 450 451 struct gfs2_journal_extent { 452 struct list_head extent_list; 453 454 unsigned int lblock; /* First logical block */ 455 u64 dblock; /* First disk block */ 456 u64 blocks; 457 }; 458 459 struct gfs2_jdesc { 460 struct list_head jd_list; 461 struct list_head extent_list; 462 struct work_struct jd_work; 463 struct inode *jd_inode; 464 unsigned long jd_flags; 465 #define JDF_RECOVERY 1 466 unsigned int jd_jid; 467 unsigned int jd_blocks; 468 int jd_recover_error; 469 }; 470 471 struct gfs2_statfs_change_host { 472 s64 sc_total; 473 s64 sc_free; 474 s64 sc_dinodes; 475 }; 476 477 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 478 #define GFS2_QUOTA_OFF 0 479 #define GFS2_QUOTA_ACCOUNT 1 480 #define GFS2_QUOTA_ON 2 481 482 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 483 #define GFS2_DATA_WRITEBACK 1 484 #define GFS2_DATA_ORDERED 2 485 486 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 487 #define GFS2_ERRORS_WITHDRAW 0 488 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 489 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 490 #define GFS2_ERRORS_PANIC 3 491 492 struct gfs2_args { 493 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 494 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 495 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 496 unsigned int ar_spectator:1; /* Don't get a journal */ 497 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 498 unsigned int ar_debug:1; /* Oops on errors */ 499 unsigned int ar_posix_acl:1; /* Enable posix acls */ 500 unsigned int ar_quota:2; /* off/account/on */ 501 unsigned int ar_suiddir:1; /* suiddir support */ 502 unsigned int ar_data:2; /* ordered/writeback */ 503 unsigned int ar_meta:1; /* mount metafs */ 504 unsigned int ar_discard:1; /* discard requests */ 505 unsigned int ar_errors:2; /* errors=withdraw | panic */ 506 unsigned int ar_nobarrier:1; /* do not send barriers */ 507 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 508 int ar_commit; /* Commit interval */ 509 int ar_statfs_quantum; /* The fast statfs interval */ 510 int ar_quota_quantum; /* The quota interval */ 511 int ar_statfs_percent; /* The % change to force sync */ 512 }; 513 514 struct gfs2_tune { 515 spinlock_t gt_spin; 516 517 unsigned int gt_logd_secs; 518 519 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ 520 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 521 unsigned int gt_quota_scale_num; /* Numerator */ 522 unsigned int gt_quota_scale_den; /* Denominator */ 523 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 524 unsigned int gt_new_files_jdata; 525 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 526 unsigned int gt_complain_secs; 527 unsigned int gt_statfs_quantum; 528 unsigned int gt_statfs_slow; 529 }; 530 531 enum { 532 SDF_JOURNAL_CHECKED = 0, 533 SDF_JOURNAL_LIVE = 1, 534 SDF_SHUTDOWN = 2, 535 SDF_NOBARRIERS = 3, 536 SDF_NORECOVERY = 4, 537 SDF_DEMOTE = 5, 538 SDF_NOJOURNALID = 6, 539 SDF_RORECOVERY = 7, /* read only recovery */ 540 SDF_SKIP_DLM_UNLOCK = 8, 541 }; 542 543 #define GFS2_FSNAME_LEN 256 544 545 struct gfs2_inum_host { 546 u64 no_formal_ino; 547 u64 no_addr; 548 }; 549 550 struct gfs2_sb_host { 551 u32 sb_magic; 552 u32 sb_type; 553 u32 sb_format; 554 555 u32 sb_fs_format; 556 u32 sb_multihost_format; 557 u32 sb_bsize; 558 u32 sb_bsize_shift; 559 560 struct gfs2_inum_host sb_master_dir; 561 struct gfs2_inum_host sb_root_dir; 562 563 char sb_lockproto[GFS2_LOCKNAME_LEN]; 564 char sb_locktable[GFS2_LOCKNAME_LEN]; 565 }; 566 567 /* 568 * lm_mount() return values 569 * 570 * ls_jid - the journal ID this node should use 571 * ls_first - this node is the first to mount the file system 572 * ls_lockspace - lock module's context for this file system 573 * ls_ops - lock module's functions 574 */ 575 576 struct lm_lockstruct { 577 int ls_jid; 578 unsigned int ls_first; 579 const struct lm_lockops *ls_ops; 580 dlm_lockspace_t *ls_dlm; 581 582 int ls_recover_jid_done; /* These two are deprecated, */ 583 int ls_recover_jid_status; /* used previously by gfs_controld */ 584 585 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 586 struct dlm_lksb ls_control_lksb; /* control_lock */ 587 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 588 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 589 char *ls_lvb_bits; 590 591 spinlock_t ls_recover_spin; /* protects following fields */ 592 unsigned long ls_recover_flags; /* DFL_ */ 593 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 594 uint32_t ls_recover_start; /* gen in last recover_done cb */ 595 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 596 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 597 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 598 uint32_t *ls_recover_result; /* result of last jid recovery */ 599 }; 600 601 struct gfs2_pcpu_lkstats { 602 /* One struct for each glock type */ 603 struct gfs2_lkstats lkstats[10]; 604 }; 605 606 struct gfs2_sbd { 607 struct super_block *sd_vfs; 608 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 609 struct kobject sd_kobj; 610 unsigned long sd_flags; /* SDF_... */ 611 struct gfs2_sb_host sd_sb; 612 613 /* Constants computed on mount */ 614 615 u32 sd_fsb2bb; 616 u32 sd_fsb2bb_shift; 617 u32 sd_diptrs; /* Number of pointers in a dinode */ 618 u32 sd_inptrs; /* Number of pointers in a indirect block */ 619 u32 sd_jbsize; /* Size of a journaled data block */ 620 u32 sd_hash_bsize; /* sizeof(exhash block) */ 621 u32 sd_hash_bsize_shift; 622 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 623 u32 sd_qc_per_block; 624 u32 sd_blocks_per_bitmap; 625 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 626 u32 sd_max_height; /* Max height of a file's metadata tree */ 627 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 628 u32 sd_max_jheight; /* Max height of journaled file's meta tree */ 629 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; 630 631 struct gfs2_args sd_args; /* Mount arguments */ 632 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 633 634 /* Lock Stuff */ 635 636 struct lm_lockstruct sd_lockstruct; 637 struct gfs2_holder sd_live_gh; 638 struct gfs2_glock *sd_rename_gl; 639 struct gfs2_glock *sd_trans_gl; 640 wait_queue_head_t sd_glock_wait; 641 atomic_t sd_glock_disposal; 642 struct completion sd_locking_init; 643 struct completion sd_wdack; 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 struct gfs2_trans *sd_log_tr; 712 unsigned int sd_log_blks_reserved; 713 unsigned int sd_log_commited_buf; 714 unsigned int sd_log_commited_databuf; 715 int sd_log_commited_revoke; 716 717 atomic_t sd_log_pinned; 718 unsigned int sd_log_num_buf; 719 unsigned int sd_log_num_revoke; 720 unsigned int sd_log_num_rg; 721 unsigned int sd_log_num_databuf; 722 723 struct list_head sd_log_le_buf; 724 struct list_head sd_log_le_revoke; 725 struct list_head sd_log_le_databuf; 726 struct list_head sd_log_le_ordered; 727 spinlock_t sd_ordered_lock; 728 729 atomic_t sd_log_thresh1; 730 atomic_t sd_log_thresh2; 731 atomic_t sd_log_blks_free; 732 wait_queue_head_t sd_log_waitq; 733 wait_queue_head_t sd_logd_waitq; 734 735 u64 sd_log_sequence; 736 unsigned int sd_log_head; 737 unsigned int sd_log_tail; 738 int sd_log_idle; 739 740 struct rw_semaphore sd_log_flush_lock; 741 atomic_t sd_log_in_flight; 742 struct bio *sd_log_bio; 743 wait_queue_head_t sd_log_flush_wait; 744 int sd_log_error; 745 746 unsigned int sd_log_flush_head; 747 u64 sd_log_flush_wrapped; 748 749 spinlock_t sd_ail_lock; 750 struct list_head sd_ail1_list; 751 struct list_head sd_ail2_list; 752 753 /* Replay stuff */ 754 755 struct list_head sd_revoke_list; 756 unsigned int sd_replay_tail; 757 758 unsigned int sd_found_blocks; 759 unsigned int sd_found_revokes; 760 unsigned int sd_replayed_blocks; 761 762 /* For quiescing the filesystem */ 763 struct gfs2_holder sd_freeze_gh; 764 765 char sd_fsname[GFS2_FSNAME_LEN]; 766 char sd_table_name[GFS2_FSNAME_LEN]; 767 char sd_proto_name[GFS2_FSNAME_LEN]; 768 769 /* Debugging crud */ 770 771 unsigned long sd_last_warning; 772 struct dentry *debugfs_dir; /* debugfs directory */ 773 struct dentry *debugfs_dentry_glocks; 774 struct dentry *debugfs_dentry_glstats; 775 struct dentry *debugfs_dentry_sbstats; 776 }; 777 778 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 779 { 780 gl->gl_stats.stats[which]++; 781 } 782 783 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 784 { 785 const struct gfs2_sbd *sdp = gl->gl_sbd; 786 preempt_disable(); 787 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 788 preempt_enable(); 789 } 790 791 #endif /* __INCORE_DOT_H__ */ 792 793