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 24 #define DIO_WAIT 0x00000010 25 #define DIO_METADATA 0x00000020 26 27 struct gfs2_log_operations; 28 struct gfs2_bufdata; 29 struct gfs2_holder; 30 struct gfs2_glock; 31 struct gfs2_quota_data; 32 struct gfs2_trans; 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 }; 45 46 /* 47 * Structure of operations that are associated with each 48 * type of element in the log. 49 */ 50 51 struct gfs2_log_operations { 52 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 53 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 54 void (*lo_before_scan) (struct gfs2_jdesc *jd, 55 struct gfs2_log_header_host *head, int pass); 56 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, 57 struct gfs2_log_descriptor *ld, __be64 *ptr, 58 int pass); 59 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); 60 const char *lo_name; 61 }; 62 63 #define GBF_FULL 1 64 65 /** 66 * Clone bitmaps (bi_clone): 67 * 68 * - When a block is freed, we remember the previous state of the block in the 69 * clone bitmap, and only mark the block as free in the real bitmap. 70 * 71 * - When looking for a block to allocate, we check for a free block in the 72 * clone bitmap, and if no clone bitmap exists, in the real bitmap. 73 * 74 * - For allocating a block, we mark it as allocated in the real bitmap, and if 75 * a clone bitmap exists, also in the clone bitmap. 76 * 77 * - At the end of a log_flush, we copy the real bitmap into the clone bitmap 78 * to make the clone bitmap reflect the current allocation state. 79 * (Alternatively, we could remove the clone bitmap.) 80 * 81 * The clone bitmaps are in-core only, and is never written to disk. 82 * 83 * These steps ensure that blocks which have been freed in a transaction cannot 84 * be reallocated in that same transaction. 85 */ 86 struct gfs2_bitmap { 87 struct buffer_head *bi_bh; 88 char *bi_clone; 89 unsigned long bi_flags; 90 u32 bi_offset; 91 u32 bi_start; 92 u32 bi_bytes; 93 u32 bi_blocks; 94 }; 95 96 struct gfs2_rgrpd { 97 struct rb_node rd_node; /* Link with superblock */ 98 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 99 u64 rd_addr; /* grp block disk address */ 100 u64 rd_data0; /* first data location */ 101 u32 rd_length; /* length of rgrp header in fs blocks */ 102 u32 rd_data; /* num of data blocks in rgrp */ 103 u32 rd_bitbytes; /* number of bytes in data bitmaps */ 104 u32 rd_free; 105 u32 rd_reserved; /* number of blocks reserved */ 106 u32 rd_free_clone; 107 u32 rd_dinodes; 108 u64 rd_igeneration; 109 struct gfs2_bitmap *rd_bits; 110 struct gfs2_sbd *rd_sbd; 111 struct gfs2_rgrp_lvb *rd_rgl; 112 u32 rd_last_alloc; 113 u32 rd_flags; 114 u32 rd_extfail_pt; /* extent failure point */ 115 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 116 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 117 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 118 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ 119 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 120 spinlock_t rd_rsspin; /* protects reservation related vars */ 121 struct rb_root rd_rstree; /* multi-block reservation tree */ 122 }; 123 124 struct gfs2_rbm { 125 struct gfs2_rgrpd *rgd; 126 u32 offset; /* The offset is bitmap relative */ 127 int bii; /* Bitmap index */ 128 }; 129 130 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) 131 { 132 return rbm->rgd->rd_bits + rbm->bii; 133 } 134 135 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 136 { 137 BUG_ON(rbm->offset >= rbm->rgd->rd_data); 138 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + 139 rbm->offset; 140 } 141 142 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 143 const struct gfs2_rbm *rbm2) 144 { 145 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && 146 (rbm1->offset == rbm2->offset); 147 } 148 149 enum gfs2_state_bits { 150 BH_Pinned = BH_PrivateStart, 151 BH_Escaped = BH_PrivateStart + 1, 152 }; 153 154 BUFFER_FNS(Pinned, pinned) 155 TAS_BUFFER_FNS(Pinned, pinned) 156 BUFFER_FNS(Escaped, escaped) 157 TAS_BUFFER_FNS(Escaped, escaped) 158 159 struct gfs2_bufdata { 160 struct buffer_head *bd_bh; 161 struct gfs2_glock *bd_gl; 162 u64 bd_blkno; 163 164 struct list_head bd_list; 165 166 struct gfs2_trans *bd_tr; 167 struct list_head bd_ail_st_list; 168 struct list_head bd_ail_gl_list; 169 }; 170 171 /* 172 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 173 * prefix of lock_dlm_ gets awkward. 174 */ 175 176 #define GDLM_STRNAME_BYTES 25 177 #define GDLM_LVB_SIZE 32 178 179 /* 180 * ls_recover_flags: 181 * 182 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 183 * held by failed nodes whose journals need recovery. Those locks should 184 * only be used for journal recovery until the journal recovery is done. 185 * This is set by the dlm recover_prep callback and cleared by the 186 * gfs2_control thread when journal recovery is complete. To avoid 187 * races between recover_prep setting and gfs2_control clearing, recover_spin 188 * is held while changing this bit and reading/writing recover_block 189 * and recover_start. 190 * 191 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 192 * 193 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 194 * recovery of all journals before allowing other nodes to mount the fs. 195 * This is cleared when FIRST_MOUNT_DONE is set. 196 * 197 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 198 * recovery of all journals, and now allows other nodes to mount the fs. 199 * 200 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 201 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 202 * control clearing BLOCK_LOCKS for further recoveries. 203 * 204 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 205 * 206 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 207 * and recover_done(), i.e. set while recover_block == recover_start. 208 */ 209 210 enum { 211 DFL_BLOCK_LOCKS = 0, 212 DFL_NO_DLM_OPS = 1, 213 DFL_FIRST_MOUNT = 2, 214 DFL_FIRST_MOUNT_DONE = 3, 215 DFL_MOUNT_DONE = 4, 216 DFL_UNMOUNT = 5, 217 DFL_DLM_RECOVERY = 6, 218 }; 219 220 /* 221 * We are using struct lm_lockname as an rhashtable key. Avoid holes within 222 * the struct; padding at the end is fine. 223 */ 224 struct lm_lockname { 225 u64 ln_number; 226 struct gfs2_sbd *ln_sbd; 227 unsigned int ln_type; 228 }; 229 230 #define lm_name_equal(name1, name2) \ 231 (((name1)->ln_number == (name2)->ln_number) && \ 232 ((name1)->ln_type == (name2)->ln_type) && \ 233 ((name1)->ln_sbd == (name2)->ln_sbd)) 234 235 236 struct gfs2_glock_operations { 237 int (*go_sync) (struct gfs2_glock *gl); 238 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 239 void (*go_inval) (struct gfs2_glock *gl, int flags); 240 int (*go_demote_ok) (const struct gfs2_glock *gl); 241 int (*go_lock) (struct gfs2_holder *gh); 242 void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl, 243 const char *fs_id_buf); 244 void (*go_callback)(struct gfs2_glock *gl, bool remote); 245 void (*go_free)(struct gfs2_glock *gl); 246 const int go_type; 247 const unsigned long go_flags; 248 #define GLOF_ASPACE 1 /* address space attached */ 249 #define GLOF_LVB 2 /* Lock Value Block attached */ 250 #define GLOF_LRU 4 /* LRU managed */ 251 #define GLOF_NONDISK 8 /* not I/O related */ 252 }; 253 254 enum { 255 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 256 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 257 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 258 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 259 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 260 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 261 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 262 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 263 GFS2_NR_LKSTATS 264 }; 265 266 struct gfs2_lkstats { 267 u64 stats[GFS2_NR_LKSTATS]; 268 }; 269 270 enum { 271 /* States */ 272 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 273 HIF_FIRST = 7, 274 HIF_WAIT = 10, 275 }; 276 277 struct gfs2_holder { 278 struct list_head gh_list; 279 280 struct gfs2_glock *gh_gl; 281 struct pid *gh_owner_pid; 282 u16 gh_flags; 283 u16 gh_state; 284 285 int gh_error; 286 unsigned long gh_iflags; /* HIF_... */ 287 unsigned long gh_ip; 288 }; 289 290 /* Number of quota types we support */ 291 #define GFS2_MAXQUOTAS 2 292 293 struct gfs2_qadata { /* quota allocation data */ 294 /* Quota stuff */ 295 struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS]; 296 struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 297 unsigned int qa_qd_num; 298 int qa_ref; 299 }; 300 301 /* Resource group multi-block reservation, in order of appearance: 302 303 Step 1. Function prepares to write, allocates a mb, sets the size hint. 304 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 305 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 306 Step 4. Bits are assigned from the rgrp based on either the reservation 307 or wherever it can. 308 */ 309 310 struct gfs2_blkreserv { 311 struct rb_node rs_node; /* link to other block reservations */ 312 struct gfs2_rbm rs_rbm; /* Start of reservation */ 313 u32 rs_free; /* how many blocks are still free */ 314 }; 315 316 /* 317 * Allocation parameters 318 * @target: The number of blocks we'd ideally like to allocate 319 * @aflags: The flags (e.g. Orlov flag) 320 * 321 * The intent is to gradually expand this structure over time in 322 * order to give more information, e.g. alignment, min extent size 323 * to the allocation code. 324 */ 325 struct gfs2_alloc_parms { 326 u64 target; 327 u32 min_target; 328 u32 aflags; 329 u64 allowed; 330 }; 331 332 enum { 333 GLF_LOCK = 1, 334 GLF_DEMOTE = 3, 335 GLF_PENDING_DEMOTE = 4, 336 GLF_DEMOTE_IN_PROGRESS = 5, 337 GLF_DIRTY = 6, 338 GLF_LFLUSH = 7, 339 GLF_INVALIDATE_IN_PROGRESS = 8, 340 GLF_REPLY_PENDING = 9, 341 GLF_INITIAL = 10, 342 GLF_FROZEN = 11, 343 GLF_QUEUED = 12, 344 GLF_LRU = 13, 345 GLF_OBJECT = 14, /* Used only for tracing */ 346 GLF_BLOCKING = 15, 347 GLF_INODE_CREATING = 16, /* Inode creation occurring */ 348 GLF_PENDING_DELETE = 17, 349 GLF_FREEING = 18, /* Wait for glock to be freed */ 350 }; 351 352 struct gfs2_glock { 353 unsigned long gl_flags; /* GLF_... */ 354 struct lm_lockname gl_name; 355 356 struct lockref gl_lockref; 357 358 /* State fields protected by gl_lockref.lock */ 359 unsigned int gl_state:2, /* Current state */ 360 gl_target:2, /* Target state */ 361 gl_demote_state:2, /* State requested by remote node */ 362 gl_req:2, /* State in last dlm request */ 363 gl_reply:8; /* Last reply from the dlm */ 364 365 unsigned long gl_demote_time; /* time of first demote request */ 366 long gl_hold_time; 367 struct list_head gl_holders; 368 369 const struct gfs2_glock_operations *gl_ops; 370 ktime_t gl_dstamp; 371 struct gfs2_lkstats gl_stats; 372 struct dlm_lksb gl_lksb; 373 unsigned long gl_tchange; 374 void *gl_object; 375 376 struct list_head gl_lru; 377 struct list_head gl_ail_list; 378 atomic_t gl_ail_count; 379 atomic_t gl_revokes; 380 struct delayed_work gl_work; 381 union { 382 /* For iopen glocks only */ 383 struct { 384 struct delayed_work gl_delete; 385 u64 gl_no_formal_ino; 386 }; 387 /* For rgrp glocks only */ 388 struct { 389 loff_t start; 390 loff_t end; 391 } gl_vm; 392 }; 393 struct rcu_head gl_rcu; 394 struct rhash_head gl_node; 395 }; 396 397 enum { 398 GIF_INVALID = 0, 399 GIF_QD_LOCKED = 1, 400 GIF_ALLOC_FAILED = 2, 401 GIF_SW_PAGED = 3, 402 GIF_ORDERED = 4, 403 GIF_FREE_VFS_INODE = 5, 404 GIF_GLOP_PENDING = 6, 405 GIF_DEFERRED_DELETE = 7, 406 }; 407 408 struct gfs2_inode { 409 struct inode i_inode; 410 u64 i_no_addr; 411 u64 i_no_formal_ino; 412 u64 i_generation; 413 u64 i_eattr; 414 unsigned long i_flags; /* GIF_... */ 415 struct gfs2_glock *i_gl; /* Move into i_gh? */ 416 struct gfs2_holder i_iopen_gh; 417 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 418 struct gfs2_qadata *i_qadata; /* quota allocation data */ 419 struct gfs2_holder i_rgd_gh; 420 struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */ 421 u64 i_goal; /* goal block for allocations */ 422 atomic_t i_sizehint; /* hint of the write size */ 423 struct rw_semaphore i_rw_mutex; 424 struct list_head i_ordered; 425 struct list_head i_trunc_list; 426 __be64 *i_hash_cache; 427 u32 i_entries; 428 u32 i_diskflags; 429 u8 i_height; 430 u8 i_depth; 431 u16 i_rahead; 432 }; 433 434 /* 435 * Since i_inode is the first element of struct gfs2_inode, 436 * this is effectively a cast. 437 */ 438 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 439 { 440 return container_of(inode, struct gfs2_inode, i_inode); 441 } 442 443 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 444 { 445 return inode->i_sb->s_fs_info; 446 } 447 448 struct gfs2_file { 449 struct mutex f_fl_mutex; 450 struct gfs2_holder f_fl_gh; 451 }; 452 453 struct gfs2_revoke_replay { 454 struct list_head rr_list; 455 u64 rr_blkno; 456 unsigned int rr_where; 457 }; 458 459 enum { 460 QDF_CHANGE = 1, 461 QDF_LOCKED = 2, 462 QDF_REFRESH = 3, 463 QDF_QMSG_QUIET = 4, 464 }; 465 466 struct gfs2_quota_data { 467 struct hlist_bl_node qd_hlist; 468 struct list_head qd_list; 469 struct kqid qd_id; 470 struct gfs2_sbd *qd_sbd; 471 struct lockref qd_lockref; 472 struct list_head qd_lru; 473 unsigned qd_hash; 474 475 unsigned long qd_flags; /* QDF_... */ 476 477 s64 qd_change; 478 s64 qd_change_sync; 479 480 unsigned int qd_slot; 481 unsigned int qd_slot_count; 482 483 struct buffer_head *qd_bh; 484 struct gfs2_quota_change *qd_bh_qc; 485 unsigned int qd_bh_count; 486 487 struct gfs2_glock *qd_gl; 488 struct gfs2_quota_lvb qd_qb; 489 490 u64 qd_sync_gen; 491 unsigned long qd_last_warn; 492 struct rcu_head qd_rcu; 493 }; 494 495 enum { 496 TR_TOUCHED = 1, 497 TR_ATTACHED = 2, 498 TR_ALLOCED = 3, 499 }; 500 501 struct gfs2_trans { 502 unsigned long tr_ip; 503 504 unsigned int tr_blocks; 505 unsigned int tr_revokes; 506 unsigned int tr_reserved; 507 unsigned long tr_flags; 508 509 unsigned int tr_num_buf_new; 510 unsigned int tr_num_databuf_new; 511 unsigned int tr_num_buf_rm; 512 unsigned int tr_num_databuf_rm; 513 unsigned int tr_num_revoke; 514 unsigned int tr_num_revoke_rm; 515 516 struct list_head tr_list; 517 struct list_head tr_databuf; 518 struct list_head tr_buf; 519 520 unsigned int tr_first; 521 struct list_head tr_ail1_list; 522 struct list_head tr_ail2_list; 523 }; 524 525 struct gfs2_journal_extent { 526 struct list_head list; 527 528 unsigned int lblock; /* First logical block */ 529 u64 dblock; /* First disk block */ 530 u64 blocks; 531 }; 532 533 struct gfs2_jdesc { 534 struct list_head jd_list; 535 struct list_head extent_list; 536 unsigned int nr_extents; 537 struct work_struct jd_work; 538 struct inode *jd_inode; 539 unsigned long jd_flags; 540 #define JDF_RECOVERY 1 541 unsigned int jd_jid; 542 u32 jd_blocks; 543 int jd_recover_error; 544 /* Replay stuff */ 545 546 unsigned int jd_found_blocks; 547 unsigned int jd_found_revokes; 548 unsigned int jd_replayed_blocks; 549 550 struct list_head jd_revoke_list; 551 unsigned int jd_replay_tail; 552 553 u64 jd_no_addr; 554 }; 555 556 struct gfs2_statfs_change_host { 557 s64 sc_total; 558 s64 sc_free; 559 s64 sc_dinodes; 560 }; 561 562 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 563 #define GFS2_QUOTA_OFF 0 564 #define GFS2_QUOTA_ACCOUNT 1 565 #define GFS2_QUOTA_ON 2 566 567 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 568 #define GFS2_DATA_WRITEBACK 1 569 #define GFS2_DATA_ORDERED 2 570 571 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 572 #define GFS2_ERRORS_WITHDRAW 0 573 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 574 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 575 #define GFS2_ERRORS_PANIC 3 576 577 struct gfs2_args { 578 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 579 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 580 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 581 unsigned int ar_spectator:1; /* Don't get a journal */ 582 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 583 unsigned int ar_debug:1; /* Oops on errors */ 584 unsigned int ar_posix_acl:1; /* Enable posix acls */ 585 unsigned int ar_quota:2; /* off/account/on */ 586 unsigned int ar_suiddir:1; /* suiddir support */ 587 unsigned int ar_data:2; /* ordered/writeback */ 588 unsigned int ar_meta:1; /* mount metafs */ 589 unsigned int ar_discard:1; /* discard requests */ 590 unsigned int ar_errors:2; /* errors=withdraw | panic */ 591 unsigned int ar_nobarrier:1; /* do not send barriers */ 592 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 593 unsigned int ar_loccookie:1; /* use location based readdir 594 cookies */ 595 s32 ar_commit; /* Commit interval */ 596 s32 ar_statfs_quantum; /* The fast statfs interval */ 597 s32 ar_quota_quantum; /* The quota interval */ 598 s32 ar_statfs_percent; /* The % change to force sync */ 599 }; 600 601 struct gfs2_tune { 602 spinlock_t gt_spin; 603 604 unsigned int gt_logd_secs; 605 606 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 607 unsigned int gt_quota_scale_num; /* Numerator */ 608 unsigned int gt_quota_scale_den; /* Denominator */ 609 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 610 unsigned int gt_new_files_jdata; 611 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 612 unsigned int gt_complain_secs; 613 unsigned int gt_statfs_quantum; 614 unsigned int gt_statfs_slow; 615 }; 616 617 enum { 618 SDF_JOURNAL_CHECKED = 0, 619 SDF_JOURNAL_LIVE = 1, 620 SDF_WITHDRAWN = 2, 621 SDF_NOBARRIERS = 3, 622 SDF_NORECOVERY = 4, 623 SDF_DEMOTE = 5, 624 SDF_NOJOURNALID = 6, 625 SDF_RORECOVERY = 7, /* read only recovery */ 626 SDF_SKIP_DLM_UNLOCK = 8, 627 SDF_FORCE_AIL_FLUSH = 9, 628 SDF_FS_FROZEN = 10, 629 SDF_WITHDRAWING = 11, /* Will withdraw eventually */ 630 SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */ 631 SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */ 632 SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are 633 withdrawing */ 634 }; 635 636 enum gfs2_freeze_state { 637 SFS_UNFROZEN = 0, 638 SFS_STARTING_FREEZE = 1, 639 SFS_FROZEN = 2, 640 }; 641 642 #define GFS2_FSNAME_LEN 256 643 644 struct gfs2_inum_host { 645 u64 no_formal_ino; 646 u64 no_addr; 647 }; 648 649 struct gfs2_sb_host { 650 u32 sb_magic; 651 u32 sb_type; 652 u32 sb_format; 653 654 u32 sb_fs_format; 655 u32 sb_multihost_format; 656 u32 sb_bsize; 657 u32 sb_bsize_shift; 658 659 struct gfs2_inum_host sb_master_dir; 660 struct gfs2_inum_host sb_root_dir; 661 662 char sb_lockproto[GFS2_LOCKNAME_LEN]; 663 char sb_locktable[GFS2_LOCKNAME_LEN]; 664 }; 665 666 /* 667 * lm_mount() return values 668 * 669 * ls_jid - the journal ID this node should use 670 * ls_first - this node is the first to mount the file system 671 * ls_lockspace - lock module's context for this file system 672 * ls_ops - lock module's functions 673 */ 674 675 struct lm_lockstruct { 676 int ls_jid; 677 unsigned int ls_first; 678 const struct lm_lockops *ls_ops; 679 dlm_lockspace_t *ls_dlm; 680 681 int ls_recover_jid_done; /* These two are deprecated, */ 682 int ls_recover_jid_status; /* used previously by gfs_controld */ 683 684 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 685 struct dlm_lksb ls_control_lksb; /* control_lock */ 686 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 687 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 688 char *ls_lvb_bits; 689 690 spinlock_t ls_recover_spin; /* protects following fields */ 691 unsigned long ls_recover_flags; /* DFL_ */ 692 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 693 uint32_t ls_recover_start; /* gen in last recover_done cb */ 694 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 695 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 696 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 697 uint32_t *ls_recover_result; /* result of last jid recovery */ 698 }; 699 700 struct gfs2_pcpu_lkstats { 701 /* One struct for each glock type */ 702 struct gfs2_lkstats lkstats[10]; 703 }; 704 705 struct gfs2_sbd { 706 struct super_block *sd_vfs; 707 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 708 struct kobject sd_kobj; 709 unsigned long sd_flags; /* SDF_... */ 710 struct gfs2_sb_host sd_sb; 711 712 /* Constants computed on mount */ 713 714 u32 sd_fsb2bb; 715 u32 sd_fsb2bb_shift; 716 u32 sd_diptrs; /* Number of pointers in a dinode */ 717 u32 sd_inptrs; /* Number of pointers in a indirect block */ 718 u32 sd_ldptrs; /* Number of pointers in a log descriptor block */ 719 u32 sd_jbsize; /* Size of a journaled data block */ 720 u32 sd_hash_bsize; /* sizeof(exhash block) */ 721 u32 sd_hash_bsize_shift; 722 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 723 u32 sd_qc_per_block; 724 u32 sd_blocks_per_bitmap; 725 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 726 u32 sd_max_height; /* Max height of a file's metadata tree */ 727 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 728 u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ 729 730 struct gfs2_args sd_args; /* Mount arguments */ 731 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 732 733 /* Lock Stuff */ 734 735 struct lm_lockstruct sd_lockstruct; 736 struct gfs2_holder sd_live_gh; 737 struct gfs2_glock *sd_rename_gl; 738 struct gfs2_glock *sd_freeze_gl; 739 struct work_struct sd_freeze_work; 740 wait_queue_head_t sd_glock_wait; 741 wait_queue_head_t sd_async_glock_wait; 742 atomic_t sd_glock_disposal; 743 struct completion sd_locking_init; 744 struct completion sd_wdack; 745 struct delayed_work sd_control_work; 746 747 /* Inode Stuff */ 748 749 struct dentry *sd_master_dir; 750 struct dentry *sd_root_dir; 751 752 struct inode *sd_jindex; 753 struct inode *sd_statfs_inode; 754 struct inode *sd_sc_inode; 755 struct inode *sd_qc_inode; 756 struct inode *sd_rindex; 757 struct inode *sd_quota_inode; 758 759 /* StatFS stuff */ 760 761 spinlock_t sd_statfs_spin; 762 struct gfs2_statfs_change_host sd_statfs_master; 763 struct gfs2_statfs_change_host sd_statfs_local; 764 int sd_statfs_force_sync; 765 766 /* Resource group stuff */ 767 768 int sd_rindex_uptodate; 769 spinlock_t sd_rindex_spin; 770 struct rb_root sd_rindex_tree; 771 unsigned int sd_rgrps; 772 unsigned int sd_max_rg_data; 773 774 /* Journal index stuff */ 775 776 struct list_head sd_jindex_list; 777 spinlock_t sd_jindex_spin; 778 struct mutex sd_jindex_mutex; 779 unsigned int sd_journals; 780 781 struct gfs2_jdesc *sd_jdesc; 782 struct gfs2_holder sd_journal_gh; 783 struct gfs2_holder sd_jinode_gh; 784 struct gfs2_glock *sd_jinode_gl; 785 786 struct gfs2_holder sd_sc_gh; 787 struct gfs2_holder sd_qc_gh; 788 789 struct completion sd_journal_ready; 790 791 /* Daemon stuff */ 792 793 struct task_struct *sd_logd_process; 794 struct task_struct *sd_quotad_process; 795 796 /* Quota stuff */ 797 798 struct list_head sd_quota_list; 799 atomic_t sd_quota_count; 800 struct mutex sd_quota_mutex; 801 struct mutex sd_quota_sync_mutex; 802 wait_queue_head_t sd_quota_wait; 803 struct list_head sd_trunc_list; 804 spinlock_t sd_trunc_lock; 805 806 unsigned int sd_quota_slots; 807 unsigned long *sd_quota_bitmap; 808 spinlock_t sd_bitmap_lock; 809 810 u64 sd_quota_sync_gen; 811 812 /* Log stuff */ 813 814 struct address_space sd_aspace; 815 816 spinlock_t sd_log_lock; 817 818 struct gfs2_trans *sd_log_tr; 819 unsigned int sd_log_blks_reserved; 820 int sd_log_committed_revoke; 821 822 atomic_t sd_log_pinned; 823 unsigned int sd_log_num_revoke; 824 825 struct list_head sd_log_revokes; 826 struct list_head sd_log_ordered; 827 spinlock_t sd_ordered_lock; 828 829 atomic_t sd_log_thresh1; 830 atomic_t sd_log_thresh2; 831 atomic_t sd_log_blks_free; 832 atomic_t sd_log_blks_needed; 833 wait_queue_head_t sd_log_waitq; 834 wait_queue_head_t sd_logd_waitq; 835 836 u64 sd_log_sequence; 837 unsigned int sd_log_head; 838 unsigned int sd_log_tail; 839 int sd_log_idle; 840 841 struct rw_semaphore sd_log_flush_lock; 842 atomic_t sd_log_in_flight; 843 struct bio *sd_log_bio; 844 wait_queue_head_t sd_log_flush_wait; 845 int sd_log_error; /* First log error */ 846 wait_queue_head_t sd_withdraw_wait; 847 848 atomic_t sd_reserving_log; 849 wait_queue_head_t sd_reserving_log_wait; 850 851 unsigned int sd_log_flush_head; 852 853 spinlock_t sd_ail_lock; 854 struct list_head sd_ail1_list; 855 struct list_head sd_ail2_list; 856 857 /* For quiescing the filesystem */ 858 struct gfs2_holder sd_freeze_gh; 859 atomic_t sd_freeze_state; 860 struct mutex sd_freeze_mutex; 861 862 char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2]; 863 char sd_table_name[GFS2_FSNAME_LEN]; 864 char sd_proto_name[GFS2_FSNAME_LEN]; 865 866 /* Debugging crud */ 867 868 unsigned long sd_last_warning; 869 struct dentry *debugfs_dir; /* debugfs directory */ 870 unsigned long sd_glock_dqs_held; 871 }; 872 873 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 874 { 875 gl->gl_stats.stats[which]++; 876 } 877 878 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 879 { 880 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 881 preempt_disable(); 882 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 883 preempt_enable(); 884 } 885 886 extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); 887 888 static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip) 889 { 890 return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 891 } 892 893 #endif /* __INCORE_DOT_H__ */ 894 895