1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. 5 */ 6 7 #ifndef __INCORE_DOT_H__ 8 #define __INCORE_DOT_H__ 9 10 #include <linux/fs.h> 11 #include <linux/kobject.h> 12 #include <linux/workqueue.h> 13 #include <linux/dlm.h> 14 #include <linux/buffer_head.h> 15 #include <linux/rcupdate.h> 16 #include <linux/rculist_bl.h> 17 #include <linux/completion.h> 18 #include <linux/rbtree.h> 19 #include <linux/ktime.h> 20 #include <linux/percpu.h> 21 #include <linux/lockref.h> 22 #include <linux/rhashtable.h> 23 #include <linux/mutex.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 46 s64 lh_local_total; 47 s64 lh_local_free; 48 s64 lh_local_dinodes; 49 }; 50 51 /* 52 * Structure of operations that are associated with each 53 * type of element in the log. 54 */ 55 56 struct gfs2_log_operations { 57 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 58 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 59 void (*lo_before_scan) (struct gfs2_jdesc *jd, 60 struct gfs2_log_header_host *head, int pass); 61 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, 62 struct gfs2_log_descriptor *ld, __be64 *ptr, 63 int pass); 64 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); 65 const char *lo_name; 66 }; 67 68 #define GBF_FULL 1 69 70 /** 71 * Clone bitmaps (bi_clone): 72 * 73 * - When a block is freed, we remember the previous state of the block in the 74 * clone bitmap, and only mark the block as free in the real bitmap. 75 * 76 * - When looking for a block to allocate, we check for a free block in the 77 * clone bitmap, and if no clone bitmap exists, in the real bitmap. 78 * 79 * - For allocating a block, we mark it as allocated in the real bitmap, and if 80 * a clone bitmap exists, also in the clone bitmap. 81 * 82 * - At the end of a log_flush, we copy the real bitmap into the clone bitmap 83 * to make the clone bitmap reflect the current allocation state. 84 * (Alternatively, we could remove the clone bitmap.) 85 * 86 * The clone bitmaps are in-core only, and is never written to disk. 87 * 88 * These steps ensure that blocks which have been freed in a transaction cannot 89 * be reallocated in that same transaction. 90 */ 91 struct gfs2_bitmap { 92 struct buffer_head *bi_bh; 93 char *bi_clone; 94 unsigned long bi_flags; 95 u32 bi_offset; 96 u32 bi_start; 97 u32 bi_bytes; 98 u32 bi_blocks; 99 }; 100 101 struct gfs2_rgrpd { 102 struct rb_node rd_node; /* Link with superblock */ 103 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 104 u64 rd_addr; /* grp block disk address */ 105 u64 rd_data0; /* first data location */ 106 u32 rd_length; /* length of rgrp header in fs blocks */ 107 u32 rd_data; /* num of data blocks in rgrp */ 108 u32 rd_bitbytes; /* number of bytes in data bitmaps */ 109 u32 rd_free; 110 u32 rd_requested; /* number of blocks in rd_rstree */ 111 u32 rd_reserved; /* number of reserved blocks */ 112 u32 rd_free_clone; 113 u32 rd_dinodes; 114 u64 rd_igeneration; 115 struct gfs2_bitmap *rd_bits; 116 struct gfs2_sbd *rd_sbd; 117 struct gfs2_rgrp_lvb *rd_rgl; 118 u32 rd_last_alloc; 119 u32 rd_flags; 120 u32 rd_extfail_pt; /* extent failure point */ 121 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 122 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 123 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 124 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ 125 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 126 spinlock_t rd_rsspin; /* protects reservation related vars */ 127 struct mutex rd_mutex; 128 struct rb_root rd_rstree; /* multi-block reservation tree */ 129 }; 130 131 enum gfs2_state_bits { 132 BH_Pinned = BH_PrivateStart, 133 BH_Escaped = BH_PrivateStart + 1, 134 }; 135 136 BUFFER_FNS(Pinned, pinned) 137 TAS_BUFFER_FNS(Pinned, pinned) 138 BUFFER_FNS(Escaped, escaped) 139 TAS_BUFFER_FNS(Escaped, escaped) 140 141 struct gfs2_bufdata { 142 struct buffer_head *bd_bh; 143 struct gfs2_glock *bd_gl; 144 u64 bd_blkno; 145 146 struct list_head bd_list; 147 148 struct gfs2_trans *bd_tr; 149 struct list_head bd_ail_st_list; 150 struct list_head bd_ail_gl_list; 151 }; 152 153 /* 154 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 155 * prefix of lock_dlm_ gets awkward. 156 */ 157 158 #define GDLM_STRNAME_BYTES 25 159 #define GDLM_LVB_SIZE 32 160 161 /* 162 * ls_recover_flags: 163 * 164 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 165 * held by failed nodes whose journals need recovery. Those locks should 166 * only be used for journal recovery until the journal recovery is done. 167 * This is set by the dlm recover_prep callback and cleared by the 168 * gfs2_control thread when journal recovery is complete. To avoid 169 * races between recover_prep setting and gfs2_control clearing, recover_spin 170 * is held while changing this bit and reading/writing recover_block 171 * and recover_start. 172 * 173 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 174 * 175 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 176 * recovery of all journals before allowing other nodes to mount the fs. 177 * This is cleared when FIRST_MOUNT_DONE is set. 178 * 179 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 180 * recovery of all journals, and now allows other nodes to mount the fs. 181 * 182 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 183 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 184 * control clearing BLOCK_LOCKS for further recoveries. 185 * 186 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 187 * 188 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 189 * and recover_done(), i.e. set while recover_block == recover_start. 190 */ 191 192 enum { 193 DFL_BLOCK_LOCKS = 0, 194 DFL_NO_DLM_OPS = 1, 195 DFL_FIRST_MOUNT = 2, 196 DFL_FIRST_MOUNT_DONE = 3, 197 DFL_MOUNT_DONE = 4, 198 DFL_UNMOUNT = 5, 199 DFL_DLM_RECOVERY = 6, 200 }; 201 202 /* 203 * We are using struct lm_lockname as an rhashtable key. Avoid holes within 204 * the struct; padding at the end is fine. 205 */ 206 struct lm_lockname { 207 u64 ln_number; 208 struct gfs2_sbd *ln_sbd; 209 unsigned int ln_type; 210 }; 211 212 #define lm_name_equal(name1, name2) \ 213 (((name1)->ln_number == (name2)->ln_number) && \ 214 ((name1)->ln_type == (name2)->ln_type) && \ 215 ((name1)->ln_sbd == (name2)->ln_sbd)) 216 217 218 struct gfs2_glock_operations { 219 int (*go_sync) (struct gfs2_glock *gl); 220 int (*go_xmote_bh)(struct gfs2_glock *gl); 221 void (*go_inval) (struct gfs2_glock *gl, int flags); 222 int (*go_demote_ok) (const struct gfs2_glock *gl); 223 int (*go_lock) (struct gfs2_holder *gh); 224 void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl, 225 const char *fs_id_buf); 226 void (*go_callback)(struct gfs2_glock *gl, bool remote); 227 void (*go_free)(struct gfs2_glock *gl); 228 const int go_subclass; 229 const int go_type; 230 const unsigned long go_flags; 231 #define GLOF_ASPACE 1 /* address space attached */ 232 #define GLOF_LVB 2 /* Lock Value Block attached */ 233 #define GLOF_LRU 4 /* LRU managed */ 234 #define GLOF_NONDISK 8 /* not I/O related */ 235 }; 236 237 enum { 238 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 239 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 240 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 241 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 242 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 243 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 244 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 245 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 246 GFS2_NR_LKSTATS 247 }; 248 249 struct gfs2_lkstats { 250 u64 stats[GFS2_NR_LKSTATS]; 251 }; 252 253 enum { 254 /* States */ 255 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 256 HIF_FIRST = 7, 257 HIF_WAIT = 10, 258 }; 259 260 struct gfs2_holder { 261 struct list_head gh_list; 262 263 struct gfs2_glock *gh_gl; 264 struct pid *gh_owner_pid; 265 u16 gh_flags; 266 u16 gh_state; 267 268 int gh_error; 269 unsigned long gh_iflags; /* HIF_... */ 270 unsigned long gh_ip; 271 }; 272 273 /* Number of quota types we support */ 274 #define GFS2_MAXQUOTAS 2 275 276 struct gfs2_qadata { /* quota allocation data */ 277 /* Quota stuff */ 278 struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS]; 279 struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 280 unsigned int qa_qd_num; 281 int qa_ref; 282 }; 283 284 /* Resource group multi-block reservation, in order of appearance: 285 286 Step 1. Function prepares to write, allocates a mb, sets the size hint. 287 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 288 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 289 Step 4. Bits are assigned from the rgrp based on either the reservation 290 or wherever it can. 291 */ 292 293 struct gfs2_blkreserv { 294 struct rb_node rs_node; /* node within rd_rstree */ 295 struct gfs2_rgrpd *rs_rgd; 296 u64 rs_start; 297 u32 rs_requested; 298 u32 rs_reserved; /* number of reserved blocks */ 299 }; 300 301 /* 302 * Allocation parameters 303 * @target: The number of blocks we'd ideally like to allocate 304 * @aflags: The flags (e.g. Orlov flag) 305 * 306 * The intent is to gradually expand this structure over time in 307 * order to give more information, e.g. alignment, min extent size 308 * to the allocation code. 309 */ 310 struct gfs2_alloc_parms { 311 u64 target; 312 u32 min_target; 313 u32 aflags; 314 u64 allowed; 315 }; 316 317 enum { 318 GLF_LOCK = 1, 319 GLF_DEMOTE = 3, 320 GLF_PENDING_DEMOTE = 4, 321 GLF_DEMOTE_IN_PROGRESS = 5, 322 GLF_DIRTY = 6, 323 GLF_LFLUSH = 7, 324 GLF_INVALIDATE_IN_PROGRESS = 8, 325 GLF_REPLY_PENDING = 9, 326 GLF_INITIAL = 10, 327 GLF_FROZEN = 11, 328 GLF_LRU = 13, 329 GLF_OBJECT = 14, /* Used only for tracing */ 330 GLF_BLOCKING = 15, 331 GLF_PENDING_DELETE = 17, 332 GLF_FREEING = 18, /* Wait for glock to be freed */ 333 }; 334 335 struct gfs2_glock { 336 unsigned long gl_flags; /* GLF_... */ 337 struct lm_lockname gl_name; 338 339 struct lockref gl_lockref; 340 341 /* State fields protected by gl_lockref.lock */ 342 unsigned int gl_state:2, /* Current state */ 343 gl_target:2, /* Target state */ 344 gl_demote_state:2, /* State requested by remote node */ 345 gl_req:2, /* State in last dlm request */ 346 gl_reply:8; /* Last reply from the dlm */ 347 348 unsigned long gl_demote_time; /* time of first demote request */ 349 long gl_hold_time; 350 struct list_head gl_holders; 351 352 const struct gfs2_glock_operations *gl_ops; 353 ktime_t gl_dstamp; 354 struct gfs2_lkstats gl_stats; 355 struct dlm_lksb gl_lksb; 356 unsigned long gl_tchange; 357 void *gl_object; 358 359 struct list_head gl_lru; 360 struct list_head gl_ail_list; 361 atomic_t gl_ail_count; 362 atomic_t gl_revokes; 363 struct delayed_work gl_work; 364 /* For iopen glocks only */ 365 struct { 366 struct delayed_work gl_delete; 367 u64 gl_no_formal_ino; 368 }; 369 struct rcu_head gl_rcu; 370 struct rhash_head gl_node; 371 }; 372 373 enum { 374 GIF_INVALID = 0, 375 GIF_QD_LOCKED = 1, 376 GIF_ALLOC_FAILED = 2, 377 GIF_SW_PAGED = 3, 378 GIF_FREE_VFS_INODE = 5, 379 GIF_GLOP_PENDING = 6, 380 GIF_DEFERRED_DELETE = 7, 381 }; 382 383 struct gfs2_inode { 384 struct inode i_inode; 385 u64 i_no_addr; 386 u64 i_no_formal_ino; 387 u64 i_generation; 388 u64 i_eattr; 389 unsigned long i_flags; /* GIF_... */ 390 struct gfs2_glock *i_gl; /* Move into i_gh? */ 391 struct gfs2_holder i_iopen_gh; 392 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 393 struct gfs2_qadata *i_qadata; /* quota allocation data */ 394 struct gfs2_holder i_rgd_gh; 395 struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */ 396 u64 i_goal; /* goal block for allocations */ 397 atomic_t i_sizehint; /* hint of the write size */ 398 struct rw_semaphore i_rw_mutex; 399 struct list_head i_ordered; 400 struct list_head i_trunc_list; 401 __be64 *i_hash_cache; 402 u32 i_entries; 403 u32 i_diskflags; 404 u8 i_height; 405 u8 i_depth; 406 u16 i_rahead; 407 }; 408 409 /* 410 * Since i_inode is the first element of struct gfs2_inode, 411 * this is effectively a cast. 412 */ 413 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 414 { 415 return container_of(inode, struct gfs2_inode, i_inode); 416 } 417 418 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 419 { 420 return inode->i_sb->s_fs_info; 421 } 422 423 struct gfs2_file { 424 struct mutex f_fl_mutex; 425 struct gfs2_holder f_fl_gh; 426 }; 427 428 struct gfs2_revoke_replay { 429 struct list_head rr_list; 430 u64 rr_blkno; 431 unsigned int rr_where; 432 }; 433 434 enum { 435 QDF_CHANGE = 1, 436 QDF_LOCKED = 2, 437 QDF_REFRESH = 3, 438 QDF_QMSG_QUIET = 4, 439 }; 440 441 struct gfs2_quota_data { 442 struct hlist_bl_node qd_hlist; 443 struct list_head qd_list; 444 struct kqid qd_id; 445 struct gfs2_sbd *qd_sbd; 446 struct lockref qd_lockref; 447 struct list_head qd_lru; 448 unsigned qd_hash; 449 450 unsigned long qd_flags; /* QDF_... */ 451 452 s64 qd_change; 453 s64 qd_change_sync; 454 455 unsigned int qd_slot; 456 unsigned int qd_slot_count; 457 458 struct buffer_head *qd_bh; 459 struct gfs2_quota_change *qd_bh_qc; 460 unsigned int qd_bh_count; 461 462 struct gfs2_glock *qd_gl; 463 struct gfs2_quota_lvb qd_qb; 464 465 u64 qd_sync_gen; 466 unsigned long qd_last_warn; 467 struct rcu_head qd_rcu; 468 }; 469 470 enum { 471 TR_TOUCHED = 1, 472 TR_ATTACHED = 2, 473 TR_ONSTACK = 3, 474 }; 475 476 struct gfs2_trans { 477 unsigned long tr_ip; 478 479 unsigned int tr_blocks; 480 unsigned int tr_revokes; 481 unsigned int tr_reserved; 482 unsigned long tr_flags; 483 484 unsigned int tr_num_buf_new; 485 unsigned int tr_num_databuf_new; 486 unsigned int tr_num_buf_rm; 487 unsigned int tr_num_databuf_rm; 488 unsigned int tr_num_revoke; 489 490 struct list_head tr_list; 491 struct list_head tr_databuf; 492 struct list_head tr_buf; 493 494 unsigned int tr_first; 495 struct list_head tr_ail1_list; 496 struct list_head tr_ail2_list; 497 }; 498 499 struct gfs2_journal_extent { 500 struct list_head list; 501 502 unsigned int lblock; /* First logical block */ 503 u64 dblock; /* First disk block */ 504 u64 blocks; 505 }; 506 507 struct gfs2_jdesc { 508 struct list_head jd_list; 509 struct list_head extent_list; 510 unsigned int nr_extents; 511 struct work_struct jd_work; 512 struct inode *jd_inode; 513 struct bio *jd_log_bio; 514 unsigned long jd_flags; 515 #define JDF_RECOVERY 1 516 unsigned int jd_jid; 517 u32 jd_blocks; 518 int jd_recover_error; 519 /* Replay stuff */ 520 521 unsigned int jd_found_blocks; 522 unsigned int jd_found_revokes; 523 unsigned int jd_replayed_blocks; 524 525 struct list_head jd_revoke_list; 526 unsigned int jd_replay_tail; 527 528 u64 jd_no_addr; 529 }; 530 531 struct gfs2_statfs_change_host { 532 s64 sc_total; 533 s64 sc_free; 534 s64 sc_dinodes; 535 }; 536 537 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 538 #define GFS2_QUOTA_OFF 0 539 #define GFS2_QUOTA_ACCOUNT 1 540 #define GFS2_QUOTA_ON 2 541 542 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 543 #define GFS2_DATA_WRITEBACK 1 544 #define GFS2_DATA_ORDERED 2 545 546 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 547 #define GFS2_ERRORS_WITHDRAW 0 548 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 549 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 550 #define GFS2_ERRORS_PANIC 3 551 552 struct gfs2_args { 553 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 554 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 555 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 556 unsigned int ar_spectator:1; /* Don't get a journal */ 557 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 558 unsigned int ar_debug:1; /* Oops on errors */ 559 unsigned int ar_posix_acl:1; /* Enable posix acls */ 560 unsigned int ar_quota:2; /* off/account/on */ 561 unsigned int ar_suiddir:1; /* suiddir support */ 562 unsigned int ar_data:2; /* ordered/writeback */ 563 unsigned int ar_meta:1; /* mount metafs */ 564 unsigned int ar_discard:1; /* discard requests */ 565 unsigned int ar_errors:2; /* errors=withdraw | panic */ 566 unsigned int ar_nobarrier:1; /* do not send barriers */ 567 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 568 unsigned int ar_got_rgrplvb:1; /* Was the rgrplvb opt given? */ 569 unsigned int ar_loccookie:1; /* use location based readdir 570 cookies */ 571 s32 ar_commit; /* Commit interval */ 572 s32 ar_statfs_quantum; /* The fast statfs interval */ 573 s32 ar_quota_quantum; /* The quota interval */ 574 s32 ar_statfs_percent; /* The % change to force sync */ 575 }; 576 577 struct gfs2_tune { 578 spinlock_t gt_spin; 579 580 unsigned int gt_logd_secs; 581 582 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 583 unsigned int gt_quota_scale_num; /* Numerator */ 584 unsigned int gt_quota_scale_den; /* Denominator */ 585 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 586 unsigned int gt_new_files_jdata; 587 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 588 unsigned int gt_complain_secs; 589 unsigned int gt_statfs_quantum; 590 unsigned int gt_statfs_slow; 591 }; 592 593 enum { 594 SDF_JOURNAL_CHECKED = 0, 595 SDF_JOURNAL_LIVE = 1, 596 SDF_WITHDRAWN = 2, 597 SDF_NOBARRIERS = 3, 598 SDF_NORECOVERY = 4, 599 SDF_DEMOTE = 5, 600 SDF_NOJOURNALID = 6, 601 SDF_RORECOVERY = 7, /* read only recovery */ 602 SDF_SKIP_DLM_UNLOCK = 8, 603 SDF_FORCE_AIL_FLUSH = 9, 604 SDF_FS_FROZEN = 10, 605 SDF_WITHDRAWING = 11, /* Will withdraw eventually */ 606 SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */ 607 SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */ 608 SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are 609 withdrawing */ 610 }; 611 612 enum gfs2_freeze_state { 613 SFS_UNFROZEN = 0, 614 SFS_STARTING_FREEZE = 1, 615 SFS_FROZEN = 2, 616 }; 617 618 #define GFS2_FSNAME_LEN 256 619 620 struct gfs2_inum_host { 621 u64 no_formal_ino; 622 u64 no_addr; 623 }; 624 625 struct gfs2_sb_host { 626 u32 sb_magic; 627 u32 sb_type; 628 629 u32 sb_fs_format; 630 u32 sb_multihost_format; 631 u32 sb_bsize; 632 u32 sb_bsize_shift; 633 634 struct gfs2_inum_host sb_master_dir; 635 struct gfs2_inum_host sb_root_dir; 636 637 char sb_lockproto[GFS2_LOCKNAME_LEN]; 638 char sb_locktable[GFS2_LOCKNAME_LEN]; 639 }; 640 641 /* 642 * lm_mount() return values 643 * 644 * ls_jid - the journal ID this node should use 645 * ls_first - this node is the first to mount the file system 646 * ls_lockspace - lock module's context for this file system 647 * ls_ops - lock module's functions 648 */ 649 650 struct lm_lockstruct { 651 int ls_jid; 652 unsigned int ls_first; 653 const struct lm_lockops *ls_ops; 654 dlm_lockspace_t *ls_dlm; 655 656 int ls_recover_jid_done; /* These two are deprecated, */ 657 int ls_recover_jid_status; /* used previously by gfs_controld */ 658 659 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 660 struct dlm_lksb ls_control_lksb; /* control_lock */ 661 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 662 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 663 char *ls_lvb_bits; 664 665 spinlock_t ls_recover_spin; /* protects following fields */ 666 unsigned long ls_recover_flags; /* DFL_ */ 667 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 668 uint32_t ls_recover_start; /* gen in last recover_done cb */ 669 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 670 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 671 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 672 uint32_t *ls_recover_result; /* result of last jid recovery */ 673 }; 674 675 struct gfs2_pcpu_lkstats { 676 /* One struct for each glock type */ 677 struct gfs2_lkstats lkstats[10]; 678 }; 679 680 /* List of local (per node) statfs inodes */ 681 struct local_statfs_inode { 682 struct list_head si_list; 683 struct inode *si_sc_inode; 684 unsigned int si_jid; /* journal id this statfs inode corresponds to */ 685 }; 686 687 struct gfs2_sbd { 688 struct super_block *sd_vfs; 689 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 690 struct kobject sd_kobj; 691 struct completion sd_kobj_unregister; 692 unsigned long sd_flags; /* SDF_... */ 693 struct gfs2_sb_host sd_sb; 694 695 /* Constants computed on mount */ 696 697 u32 sd_fsb2bb; 698 u32 sd_fsb2bb_shift; 699 u32 sd_diptrs; /* Number of pointers in a dinode */ 700 u32 sd_inptrs; /* Number of pointers in a indirect block */ 701 u32 sd_ldptrs; /* Number of pointers in a log descriptor block */ 702 u32 sd_jbsize; /* Size of a journaled data block */ 703 u32 sd_hash_bsize; /* sizeof(exhash block) */ 704 u32 sd_hash_bsize_shift; 705 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 706 u32 sd_qc_per_block; 707 u32 sd_blocks_per_bitmap; 708 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 709 u32 sd_max_height; /* Max height of a file's metadata tree */ 710 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 711 u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ 712 713 struct gfs2_args sd_args; /* Mount arguments */ 714 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 715 716 /* Lock Stuff */ 717 718 struct lm_lockstruct sd_lockstruct; 719 struct gfs2_holder sd_live_gh; 720 struct gfs2_glock *sd_rename_gl; 721 struct gfs2_glock *sd_freeze_gl; 722 struct work_struct sd_freeze_work; 723 wait_queue_head_t sd_glock_wait; 724 wait_queue_head_t sd_async_glock_wait; 725 atomic_t sd_glock_disposal; 726 struct completion sd_locking_init; 727 struct completion sd_wdack; 728 struct delayed_work sd_control_work; 729 730 /* Inode Stuff */ 731 732 struct dentry *sd_master_dir; 733 struct dentry *sd_root_dir; 734 735 struct inode *sd_jindex; 736 struct inode *sd_statfs_inode; 737 struct inode *sd_sc_inode; 738 struct list_head sd_sc_inodes_list; 739 struct inode *sd_qc_inode; 740 struct inode *sd_rindex; 741 struct inode *sd_quota_inode; 742 743 /* StatFS stuff */ 744 745 spinlock_t sd_statfs_spin; 746 struct gfs2_statfs_change_host sd_statfs_master; 747 struct gfs2_statfs_change_host sd_statfs_local; 748 int sd_statfs_force_sync; 749 750 /* Resource group stuff */ 751 752 int sd_rindex_uptodate; 753 spinlock_t sd_rindex_spin; 754 struct rb_root sd_rindex_tree; 755 unsigned int sd_rgrps; 756 unsigned int sd_max_rg_data; 757 758 /* Journal index stuff */ 759 760 struct list_head sd_jindex_list; 761 spinlock_t sd_jindex_spin; 762 struct mutex sd_jindex_mutex; 763 unsigned int sd_journals; 764 765 struct gfs2_jdesc *sd_jdesc; 766 struct gfs2_holder sd_journal_gh; 767 struct gfs2_holder sd_jinode_gh; 768 struct gfs2_glock *sd_jinode_gl; 769 770 struct gfs2_holder sd_sc_gh; 771 struct gfs2_holder sd_qc_gh; 772 773 struct completion sd_journal_ready; 774 775 /* Daemon stuff */ 776 777 struct task_struct *sd_logd_process; 778 struct task_struct *sd_quotad_process; 779 780 /* Quota stuff */ 781 782 struct list_head sd_quota_list; 783 atomic_t sd_quota_count; 784 struct mutex sd_quota_mutex; 785 struct mutex sd_quota_sync_mutex; 786 wait_queue_head_t sd_quota_wait; 787 struct list_head sd_trunc_list; 788 spinlock_t sd_trunc_lock; 789 790 unsigned int sd_quota_slots; 791 unsigned long *sd_quota_bitmap; 792 spinlock_t sd_bitmap_lock; 793 794 u64 sd_quota_sync_gen; 795 796 /* Log stuff */ 797 798 struct address_space sd_aspace; 799 800 spinlock_t sd_log_lock; 801 802 struct gfs2_trans *sd_log_tr; 803 unsigned int sd_log_blks_reserved; 804 805 atomic_t sd_log_pinned; 806 unsigned int sd_log_num_revoke; 807 808 struct list_head sd_log_revokes; 809 struct list_head sd_log_ordered; 810 spinlock_t sd_ordered_lock; 811 812 atomic_t sd_log_thresh1; 813 atomic_t sd_log_thresh2; 814 atomic_t sd_log_blks_free; 815 atomic_t sd_log_blks_needed; 816 atomic_t sd_log_revokes_available; 817 wait_queue_head_t sd_log_waitq; 818 wait_queue_head_t sd_logd_waitq; 819 820 u64 sd_log_sequence; 821 int sd_log_idle; 822 823 struct rw_semaphore sd_log_flush_lock; 824 atomic_t sd_log_in_flight; 825 wait_queue_head_t sd_log_flush_wait; 826 int sd_log_error; /* First log error */ 827 wait_queue_head_t sd_withdraw_wait; 828 829 unsigned int sd_log_tail; 830 unsigned int sd_log_flush_tail; 831 unsigned int sd_log_head; 832 unsigned int sd_log_flush_head; 833 834 spinlock_t sd_ail_lock; 835 struct list_head sd_ail1_list; 836 struct list_head sd_ail2_list; 837 838 /* For quiescing the filesystem */ 839 struct gfs2_holder sd_freeze_gh; 840 atomic_t sd_freeze_state; 841 struct mutex sd_freeze_mutex; 842 843 char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2]; 844 char sd_table_name[GFS2_FSNAME_LEN]; 845 char sd_proto_name[GFS2_FSNAME_LEN]; 846 847 /* Debugging crud */ 848 849 unsigned long sd_last_warning; 850 struct dentry *debugfs_dir; /* debugfs directory */ 851 unsigned long sd_glock_dqs_held; 852 }; 853 854 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 855 { 856 gl->gl_stats.stats[which]++; 857 } 858 859 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 860 { 861 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 862 preempt_disable(); 863 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 864 preempt_enable(); 865 } 866 867 extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); 868 869 static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip) 870 { 871 return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 872 } 873 874 #endif /* __INCORE_DOT_H__ */ 875 876