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_ERROR 0x40000000 /* error in rg */ 123 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ 124 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 125 spinlock_t rd_rsspin; /* protects reservation related vars */ 126 struct mutex rd_mutex; 127 struct rb_root rd_rstree; /* multi-block reservation tree */ 128 }; 129 130 enum gfs2_state_bits { 131 BH_Pinned = BH_PrivateStart, 132 BH_Escaped = BH_PrivateStart + 1, 133 }; 134 135 BUFFER_FNS(Pinned, pinned) 136 TAS_BUFFER_FNS(Pinned, pinned) 137 BUFFER_FNS(Escaped, escaped) 138 TAS_BUFFER_FNS(Escaped, escaped) 139 140 struct gfs2_bufdata { 141 struct buffer_head *bd_bh; 142 struct gfs2_glock *bd_gl; 143 u64 bd_blkno; 144 145 struct list_head bd_list; 146 147 struct gfs2_trans *bd_tr; 148 struct list_head bd_ail_st_list; 149 struct list_head bd_ail_gl_list; 150 }; 151 152 /* 153 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 154 * prefix of lock_dlm_ gets awkward. 155 */ 156 157 #define GDLM_STRNAME_BYTES 25 158 #define GDLM_LVB_SIZE 32 159 160 /* 161 * ls_recover_flags: 162 * 163 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 164 * held by failed nodes whose journals need recovery. Those locks should 165 * only be used for journal recovery until the journal recovery is done. 166 * This is set by the dlm recover_prep callback and cleared by the 167 * gfs2_control thread when journal recovery is complete. To avoid 168 * races between recover_prep setting and gfs2_control clearing, recover_spin 169 * is held while changing this bit and reading/writing recover_block 170 * and recover_start. 171 * 172 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 173 * 174 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 175 * recovery of all journals before allowing other nodes to mount the fs. 176 * This is cleared when FIRST_MOUNT_DONE is set. 177 * 178 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 179 * recovery of all journals, and now allows other nodes to mount the fs. 180 * 181 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 182 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 183 * control clearing BLOCK_LOCKS for further recoveries. 184 * 185 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 186 * 187 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 188 * and recover_done(), i.e. set while recover_block == recover_start. 189 */ 190 191 enum { 192 DFL_BLOCK_LOCKS = 0, 193 DFL_NO_DLM_OPS = 1, 194 DFL_FIRST_MOUNT = 2, 195 DFL_FIRST_MOUNT_DONE = 3, 196 DFL_MOUNT_DONE = 4, 197 DFL_UNMOUNT = 5, 198 DFL_DLM_RECOVERY = 6, 199 }; 200 201 /* 202 * We are using struct lm_lockname as an rhashtable key. Avoid holes within 203 * the struct; padding at the end is fine. 204 */ 205 struct lm_lockname { 206 u64 ln_number; 207 struct gfs2_sbd *ln_sbd; 208 unsigned int ln_type; 209 }; 210 211 #define lm_name_equal(name1, name2) \ 212 (((name1)->ln_number == (name2)->ln_number) && \ 213 ((name1)->ln_type == (name2)->ln_type) && \ 214 ((name1)->ln_sbd == (name2)->ln_sbd)) 215 216 217 struct gfs2_glock_operations { 218 int (*go_sync) (struct gfs2_glock *gl); 219 int (*go_xmote_bh)(struct gfs2_glock *gl); 220 void (*go_inval) (struct gfs2_glock *gl, int flags); 221 int (*go_instantiate) (struct gfs2_glock *gl); 222 int (*go_held)(struct gfs2_holder *gh); 223 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl, 224 const char *fs_id_buf); 225 void (*go_callback)(struct gfs2_glock *gl, bool remote); 226 void (*go_unlocked)(struct gfs2_glock *gl); 227 const int go_subclass; 228 const int go_type; 229 const unsigned long go_flags; 230 #define GLOF_ASPACE 1 /* address space attached */ 231 #define GLOF_LVB 2 /* Lock Value Block attached */ 232 #define GLOF_NONDISK 8 /* not I/O related */ 233 }; 234 235 enum { 236 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 237 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 238 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 239 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 240 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 241 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 242 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 243 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 244 GFS2_NR_LKSTATS 245 }; 246 247 struct gfs2_lkstats { 248 u64 stats[GFS2_NR_LKSTATS]; 249 }; 250 251 enum { 252 /* States */ 253 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 254 HIF_WAIT = 10, 255 }; 256 257 struct gfs2_holder { 258 struct list_head gh_list; 259 260 struct gfs2_glock *gh_gl; 261 struct pid *gh_owner_pid; 262 u16 gh_flags; 263 u16 gh_state; 264 265 int gh_error; 266 unsigned long gh_iflags; /* HIF_... */ 267 unsigned long gh_ip; 268 }; 269 270 /* Number of quota types we support */ 271 #define GFS2_MAXQUOTAS 2 272 273 struct gfs2_qadata { /* quota allocation data */ 274 /* Quota stuff */ 275 struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS]; 276 struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 277 unsigned int qa_qd_num; 278 int qa_ref; 279 }; 280 281 /* Resource group multi-block reservation, in order of appearance: 282 283 Step 1. Function prepares to write, allocates a mb, sets the size hint. 284 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 285 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 286 Step 4. Bits are assigned from the rgrp based on either the reservation 287 or wherever it can. 288 */ 289 290 struct gfs2_blkreserv { 291 struct rb_node rs_node; /* node within rd_rstree */ 292 struct gfs2_rgrpd *rs_rgd; 293 u64 rs_start; 294 u32 rs_requested; 295 u32 rs_reserved; /* number of reserved blocks */ 296 }; 297 298 /* 299 * Allocation parameters 300 * @target: The number of blocks we'd ideally like to allocate 301 * @aflags: The flags (e.g. Orlov flag) 302 * 303 * The intent is to gradually expand this structure over time in 304 * order to give more information, e.g. alignment, min extent size 305 * to the allocation code. 306 */ 307 struct gfs2_alloc_parms { 308 u64 target; 309 u32 min_target; 310 u32 aflags; 311 u64 allowed; 312 }; 313 314 enum { 315 GLF_LOCK = 1, 316 GLF_INSTANTIATE_NEEDED = 2, /* needs instantiate */ 317 GLF_DEMOTE = 3, 318 GLF_PENDING_DEMOTE = 4, 319 GLF_DEMOTE_IN_PROGRESS = 5, 320 GLF_DIRTY = 6, 321 GLF_LFLUSH = 7, 322 GLF_INVALIDATE_IN_PROGRESS = 8, 323 GLF_HAVE_REPLY = 9, 324 GLF_INITIAL = 10, 325 GLF_HAVE_FROZEN_REPLY = 11, 326 GLF_INSTANTIATE_IN_PROG = 12, /* instantiate happening now */ 327 GLF_LRU = 13, 328 GLF_OBJECT = 14, /* Used only for tracing */ 329 GLF_BLOCKING = 15, 330 GLF_UNLOCKED = 16, /* Wait for glock to be unlocked */ 331 GLF_TRY_TO_EVICT = 17, /* iopen glocks only */ 332 GLF_VERIFY_DELETE = 18, /* iopen glocks only */ 333 GLF_PENDING_REPLY = 19, 334 GLF_DEFER_DELETE = 20, /* iopen glocks only */ 335 GLF_CANCELING = 21, 336 }; 337 338 struct gfs2_glock { 339 unsigned long gl_flags; /* GLF_... */ 340 struct lm_lockname gl_name; 341 342 struct lockref gl_lockref; 343 344 /* State fields protected by gl_lockref.lock */ 345 unsigned int gl_state:2, /* Current state */ 346 gl_target:2, /* Target state */ 347 gl_demote_state:2, /* State requested by remote node */ 348 gl_req:2, /* State in last dlm request */ 349 gl_reply:8; /* Last reply from the dlm */ 350 351 unsigned long gl_demote_time; /* time of first demote request */ 352 long gl_hold_time; 353 struct list_head gl_holders; 354 355 const struct gfs2_glock_operations *gl_ops; 356 ktime_t gl_dstamp; 357 struct gfs2_lkstats gl_stats; 358 struct dlm_lksb gl_lksb; 359 unsigned long gl_tchange; 360 void *gl_object; 361 362 struct list_head gl_lru; 363 struct list_head gl_ail_list; 364 atomic_t gl_ail_count; 365 atomic_t gl_revokes; 366 struct delayed_work gl_work; 367 /* For iopen glocks only */ 368 struct { 369 struct delayed_work gl_delete; 370 u64 gl_no_formal_ino; 371 }; 372 struct rcu_head gl_rcu; 373 struct rhash_head gl_node; 374 }; 375 376 enum { 377 GIF_QD_LOCKED = 1, 378 GIF_ALLOC_FAILED = 2, 379 GIF_SW_PAGED = 3, 380 GIF_FREE_VFS_INODE = 5, 381 GIF_GLOP_PENDING = 6, 382 }; 383 384 struct gfs2_inode { 385 struct inode i_inode; 386 u64 i_no_addr; 387 u64 i_no_formal_ino; 388 u64 i_generation; 389 u64 i_eattr; 390 unsigned long i_flags; /* GIF_... */ 391 struct gfs2_glock *i_gl; 392 struct gfs2_holder i_iopen_gh; 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 __be64 *i_hash_cache; 401 u32 i_entries; 402 u32 i_diskflags; 403 u8 i_height; 404 u8 i_depth; 405 u16 i_rahead; 406 }; 407 408 /* 409 * Since i_inode is the first element of struct gfs2_inode, 410 * this is effectively a cast. 411 */ GFS2_I(struct inode * inode)412 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 413 { 414 return container_of(inode, struct gfs2_inode, i_inode); 415 } 416 GFS2_SB(const struct inode * inode)417 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 418 { 419 return inode->i_sb->s_fs_info; 420 } 421 422 struct gfs2_file { 423 struct mutex f_fl_mutex; 424 struct gfs2_holder f_fl_gh; 425 }; 426 427 struct gfs2_revoke_replay { 428 struct list_head rr_list; 429 u64 rr_blkno; 430 unsigned int rr_where; 431 }; 432 433 enum { 434 QDF_CHANGE = 1, 435 QDF_LOCKED = 2, 436 QDF_REFRESH = 3, 437 QDF_QMSG_QUIET = 4, 438 }; 439 440 struct gfs2_quota_data { 441 struct hlist_bl_node qd_hlist; 442 struct list_head qd_list; 443 struct kqid qd_id; 444 struct gfs2_sbd *qd_sbd; 445 struct lockref qd_lockref; 446 struct list_head qd_lru; 447 unsigned qd_hash; 448 449 unsigned long qd_flags; /* QDF_... */ 450 451 s64 qd_change; 452 s64 qd_change_sync; 453 454 unsigned int qd_slot; 455 unsigned int qd_slot_ref; 456 457 struct buffer_head *qd_bh; 458 struct gfs2_quota_change *qd_bh_qc; 459 unsigned int qd_bh_count; 460 461 struct gfs2_glock *qd_gl; 462 struct gfs2_quota_lvb qd_qb; 463 464 u64 qd_sync_gen; 465 unsigned long qd_last_warn; 466 struct rcu_head qd_rcu; 467 }; 468 469 enum { 470 TR_TOUCHED = 1, 471 TR_ATTACHED = 2, 472 TR_ONSTACK = 3, 473 }; 474 475 struct gfs2_trans { 476 unsigned long tr_ip; 477 478 unsigned int tr_blocks; 479 unsigned int tr_revokes; 480 unsigned int tr_reserved; 481 unsigned long tr_flags; 482 483 unsigned int tr_num_buf_new; 484 unsigned int tr_num_databuf_new; 485 unsigned int tr_num_buf_rm; 486 unsigned int tr_num_databuf_rm; 487 unsigned int tr_num_revoke; 488 489 struct list_head tr_list; 490 struct list_head tr_databuf; 491 struct list_head tr_buf; 492 493 unsigned int tr_first; 494 struct list_head tr_ail1_list; 495 struct list_head tr_ail2_list; 496 }; 497 498 struct gfs2_journal_extent { 499 struct list_head list; 500 501 unsigned int lblock; /* First logical block */ 502 u64 dblock; /* First disk block */ 503 u64 blocks; 504 }; 505 506 struct gfs2_jdesc { 507 struct list_head jd_list; 508 struct list_head extent_list; 509 unsigned int nr_extents; 510 struct work_struct jd_work; 511 struct inode *jd_inode; 512 struct bio *jd_log_bio; 513 unsigned long jd_flags; 514 #define JDF_RECOVERY 1 515 unsigned int jd_jid; 516 u32 jd_blocks; 517 int jd_recover_error; 518 /* Replay stuff */ 519 520 unsigned int jd_found_blocks; 521 unsigned int jd_found_revokes; 522 unsigned int jd_replayed_blocks; 523 524 struct list_head jd_revoke_list; 525 unsigned int jd_replay_tail; 526 527 u64 jd_no_addr; 528 }; 529 530 struct gfs2_statfs_change_host { 531 s64 sc_total; 532 s64 sc_free; 533 s64 sc_dinodes; 534 }; 535 536 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 537 #define GFS2_QUOTA_OFF 0 538 #define GFS2_QUOTA_ACCOUNT 1 539 #define GFS2_QUOTA_ON 2 540 #define GFS2_QUOTA_QUIET 3 /* on but not complaining */ 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_FREEZE_INITIATOR = 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 SDF_KILL = 15, 611 SDF_EVICTING = 16, 612 SDF_FROZEN = 17, 613 }; 614 615 #define GFS2_FSNAME_LEN 256 616 617 struct gfs2_inum_host { 618 u64 no_formal_ino; 619 u64 no_addr; 620 }; 621 622 struct gfs2_sb_host { 623 u32 sb_magic; 624 u32 sb_type; 625 626 u32 sb_fs_format; 627 u32 sb_multihost_format; 628 u32 sb_bsize; 629 u32 sb_bsize_shift; 630 631 struct gfs2_inum_host sb_master_dir; 632 struct gfs2_inum_host sb_root_dir; 633 634 char sb_lockproto[GFS2_LOCKNAME_LEN]; 635 char sb_locktable[GFS2_LOCKNAME_LEN]; 636 }; 637 638 /* 639 * lm_mount() return values 640 * 641 * ls_jid - the journal ID this node should use 642 * ls_first - this node is the first to mount the file system 643 * ls_lockspace - lock module's context for this file system 644 * ls_ops - lock module's functions 645 */ 646 647 struct lm_lockstruct { 648 int ls_jid; 649 unsigned int ls_first; 650 const struct lm_lockops *ls_ops; 651 dlm_lockspace_t *ls_dlm; 652 653 int ls_recover_jid_done; /* These two are deprecated, */ 654 int ls_recover_jid_status; /* used previously by gfs_controld */ 655 656 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 657 struct dlm_lksb ls_control_lksb; /* control_lock */ 658 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 659 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 660 char *ls_lvb_bits; 661 662 spinlock_t ls_recover_spin; /* protects following fields */ 663 unsigned long ls_recover_flags; /* DFL_ */ 664 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 665 uint32_t ls_recover_start; /* gen in last recover_done cb */ 666 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 667 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 668 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 669 uint32_t *ls_recover_result; /* result of last jid recovery */ 670 }; 671 672 struct gfs2_pcpu_lkstats { 673 /* One struct for each glock type */ 674 struct gfs2_lkstats lkstats[10]; 675 }; 676 677 /* List of local (per node) statfs inodes */ 678 struct local_statfs_inode { 679 struct list_head si_list; 680 struct inode *si_sc_inode; 681 unsigned int si_jid; /* journal id this statfs inode corresponds to */ 682 }; 683 684 struct gfs2_sbd { 685 struct super_block *sd_vfs; 686 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 687 struct kobject sd_kobj; 688 struct completion sd_kobj_unregister; 689 unsigned long sd_flags; /* SDF_... */ 690 struct gfs2_sb_host sd_sb; 691 692 /* Constants computed on mount */ 693 694 u32 sd_fsb2bb; 695 u32 sd_fsb2bb_shift; 696 u32 sd_diptrs; /* Number of pointers in a dinode */ 697 u32 sd_inptrs; /* Number of pointers in a indirect block */ 698 u32 sd_ldptrs; /* Number of pointers in a log descriptor block */ 699 u32 sd_jbsize; /* Size of a journaled data block */ 700 u32 sd_hash_bsize; /* sizeof(exhash block) */ 701 u32 sd_hash_bsize_shift; 702 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 703 u32 sd_qc_per_block; 704 u32 sd_blocks_per_bitmap; 705 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 706 u32 sd_max_height; /* Max height of a file's metadata tree */ 707 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 708 u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ 709 710 struct gfs2_args sd_args; /* Mount arguments */ 711 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 712 713 /* Lock Stuff */ 714 715 struct lm_lockstruct sd_lockstruct; 716 struct gfs2_holder sd_live_gh; 717 struct gfs2_glock *sd_rename_gl; 718 struct gfs2_glock *sd_freeze_gl; 719 struct work_struct sd_freeze_work; 720 wait_queue_head_t sd_kill_wait; 721 wait_queue_head_t sd_async_glock_wait; 722 atomic_t sd_glock_disposal; 723 struct completion sd_locking_init; 724 struct completion sd_wdack; 725 struct delayed_work sd_control_work; 726 727 /* Inode Stuff */ 728 729 struct dentry *sd_master_dir; 730 struct dentry *sd_root_dir; 731 732 struct inode *sd_jindex; 733 struct inode *sd_statfs_inode; 734 struct inode *sd_sc_inode; 735 struct list_head sd_sc_inodes_list; 736 struct inode *sd_qc_inode; 737 struct inode *sd_rindex; 738 struct inode *sd_quota_inode; 739 740 /* StatFS stuff */ 741 742 spinlock_t sd_statfs_spin; 743 struct gfs2_statfs_change_host sd_statfs_master; 744 struct gfs2_statfs_change_host sd_statfs_local; 745 int sd_statfs_force_sync; 746 747 /* Resource group stuff */ 748 749 int sd_rindex_uptodate; 750 spinlock_t sd_rindex_spin; 751 struct rb_root sd_rindex_tree; 752 unsigned int sd_rgrps; 753 unsigned int sd_max_rg_data; 754 755 /* Journal index stuff */ 756 757 struct list_head sd_jindex_list; 758 spinlock_t sd_jindex_spin; 759 struct mutex sd_jindex_mutex; 760 unsigned int sd_journals; 761 762 struct gfs2_jdesc *sd_jdesc; 763 struct gfs2_holder sd_journal_gh; 764 struct gfs2_holder sd_jinode_gh; 765 struct gfs2_glock *sd_jinode_gl; 766 767 struct gfs2_holder sd_sc_gh; 768 struct buffer_head *sd_sc_bh; 769 struct gfs2_holder sd_qc_gh; 770 771 struct completion sd_journal_ready; 772 773 /* Workqueue stuff */ 774 775 struct workqueue_struct *sd_glock_wq; 776 struct workqueue_struct *sd_delete_wq; 777 778 /* Daemon stuff */ 779 780 struct task_struct *sd_logd_process; 781 struct task_struct *sd_quotad_process; 782 783 /* Quota stuff */ 784 785 struct list_head sd_quota_list; 786 atomic_t sd_quota_count; 787 struct mutex sd_quota_sync_mutex; 788 wait_queue_head_t sd_quota_wait; 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 struct mutex sd_freeze_mutex; 841 struct list_head sd_dead_glocks; 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 gfs2_glstats_inc(struct gfs2_glock * gl,int which)854 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 855 { 856 gl->gl_stats.stats[which]++; 857 } 858 gfs2_sbstats_inc(const struct gfs2_glock * gl,int which)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 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); 868 gfs2_max_stuffed_size(const struct gfs2_inode * ip)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