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 s64 lh_local_total; 46 s64 lh_local_free; 47 s64 lh_local_dinodes; 48 }; 49 50 /* 51 * Structure of operations that are associated with each 52 * type of element in the log. 53 */ 54 55 struct gfs2_log_operations { 56 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 58 void (*lo_before_scan) (struct gfs2_jdesc *jd, 59 struct gfs2_log_header_host *head, int pass); 60 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, 61 struct gfs2_log_descriptor *ld, __be64 *ptr, 62 int pass); 63 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); 64 const char *lo_name; 65 }; 66 67 #define GBF_FULL 1 68 69 /** 70 * Clone bitmaps (bi_clone): 71 * 72 * - When a block is freed, we remember the previous state of the block in the 73 * clone bitmap, and only mark the block as free in the real bitmap. 74 * 75 * - When looking for a block to allocate, we check for a free block in the 76 * clone bitmap, and if no clone bitmap exists, in the real bitmap. 77 * 78 * - For allocating a block, we mark it as allocated in the real bitmap, and if 79 * a clone bitmap exists, also in the clone bitmap. 80 * 81 * - At the end of a log_flush, we copy the real bitmap into the clone bitmap 82 * to make the clone bitmap reflect the current allocation state. 83 * (Alternatively, we could remove the clone bitmap.) 84 * 85 * The clone bitmaps are in-core only, and is never written to disk. 86 * 87 * These steps ensure that blocks which have been freed in a transaction cannot 88 * be reallocated in that same transaction. 89 */ 90 struct gfs2_bitmap { 91 struct buffer_head *bi_bh; 92 char *bi_clone; 93 unsigned long bi_flags; 94 u32 bi_offset; 95 u32 bi_start; 96 u32 bi_bytes; 97 u32 bi_blocks; 98 }; 99 100 struct gfs2_rgrpd { 101 struct rb_node rd_node; /* Link with superblock */ 102 struct gfs2_glock *rd_gl; /* Glock for this rgrp */ 103 u64 rd_addr; /* grp block disk address */ 104 u64 rd_data0; /* first data location */ 105 u32 rd_length; /* length of rgrp header in fs blocks */ 106 u32 rd_data; /* num of data blocks in rgrp */ 107 u32 rd_bitbytes; /* number of bytes in data bitmaps */ 108 u32 rd_free; 109 u32 rd_reserved; /* number of blocks reserved */ 110 u32 rd_free_clone; 111 u32 rd_dinodes; 112 u64 rd_igeneration; 113 struct gfs2_bitmap *rd_bits; 114 struct gfs2_sbd *rd_sbd; 115 struct gfs2_rgrp_lvb *rd_rgl; 116 u32 rd_last_alloc; 117 u32 rd_flags; 118 u32 rd_extfail_pt; /* extent failure point */ 119 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */ 120 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */ 121 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */ 122 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */ 123 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */ 124 spinlock_t rd_rsspin; /* protects reservation related vars */ 125 struct rb_root rd_rstree; /* multi-block reservation tree */ 126 }; 127 128 struct gfs2_rbm { 129 struct gfs2_rgrpd *rgd; 130 u32 offset; /* The offset is bitmap relative */ 131 int bii; /* Bitmap index */ 132 }; 133 134 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm) 135 { 136 return rbm->rgd->rd_bits + rbm->bii; 137 } 138 139 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm) 140 { 141 BUG_ON(rbm->offset >= rbm->rgd->rd_data); 142 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) + 143 rbm->offset; 144 } 145 146 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1, 147 const struct gfs2_rbm *rbm2) 148 { 149 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) && 150 (rbm1->offset == rbm2->offset); 151 } 152 153 enum gfs2_state_bits { 154 BH_Pinned = BH_PrivateStart, 155 BH_Escaped = BH_PrivateStart + 1, 156 }; 157 158 BUFFER_FNS(Pinned, pinned) 159 TAS_BUFFER_FNS(Pinned, pinned) 160 BUFFER_FNS(Escaped, escaped) 161 TAS_BUFFER_FNS(Escaped, escaped) 162 163 struct gfs2_bufdata { 164 struct buffer_head *bd_bh; 165 struct gfs2_glock *bd_gl; 166 u64 bd_blkno; 167 168 struct list_head bd_list; 169 170 struct gfs2_trans *bd_tr; 171 struct list_head bd_ail_st_list; 172 struct list_head bd_ail_gl_list; 173 }; 174 175 /* 176 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a 177 * prefix of lock_dlm_ gets awkward. 178 */ 179 180 #define GDLM_STRNAME_BYTES 25 181 #define GDLM_LVB_SIZE 32 182 183 /* 184 * ls_recover_flags: 185 * 186 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been 187 * held by failed nodes whose journals need recovery. Those locks should 188 * only be used for journal recovery until the journal recovery is done. 189 * This is set by the dlm recover_prep callback and cleared by the 190 * gfs2_control thread when journal recovery is complete. To avoid 191 * races between recover_prep setting and gfs2_control clearing, recover_spin 192 * is held while changing this bit and reading/writing recover_block 193 * and recover_start. 194 * 195 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used. 196 * 197 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing 198 * recovery of all journals before allowing other nodes to mount the fs. 199 * This is cleared when FIRST_MOUNT_DONE is set. 200 * 201 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished 202 * recovery of all journals, and now allows other nodes to mount the fs. 203 * 204 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared 205 * BLOCK_LOCKS for the first time. The gfs2_control thread should now 206 * control clearing BLOCK_LOCKS for further recoveries. 207 * 208 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq. 209 * 210 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep() 211 * and recover_done(), i.e. set while recover_block == recover_start. 212 */ 213 214 enum { 215 DFL_BLOCK_LOCKS = 0, 216 DFL_NO_DLM_OPS = 1, 217 DFL_FIRST_MOUNT = 2, 218 DFL_FIRST_MOUNT_DONE = 3, 219 DFL_MOUNT_DONE = 4, 220 DFL_UNMOUNT = 5, 221 DFL_DLM_RECOVERY = 6, 222 }; 223 224 /* 225 * We are using struct lm_lockname as an rhashtable key. Avoid holes within 226 * the struct; padding at the end is fine. 227 */ 228 struct lm_lockname { 229 u64 ln_number; 230 struct gfs2_sbd *ln_sbd; 231 unsigned int ln_type; 232 }; 233 234 #define lm_name_equal(name1, name2) \ 235 (((name1)->ln_number == (name2)->ln_number) && \ 236 ((name1)->ln_type == (name2)->ln_type) && \ 237 ((name1)->ln_sbd == (name2)->ln_sbd)) 238 239 240 struct gfs2_glock_operations { 241 int (*go_sync) (struct gfs2_glock *gl); 242 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh); 243 void (*go_inval) (struct gfs2_glock *gl, int flags); 244 int (*go_demote_ok) (const struct gfs2_glock *gl); 245 int (*go_lock) (struct gfs2_holder *gh); 246 void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl, 247 const char *fs_id_buf); 248 void (*go_callback)(struct gfs2_glock *gl, bool remote); 249 void (*go_free)(struct gfs2_glock *gl); 250 const int go_type; 251 const unsigned long go_flags; 252 #define GLOF_ASPACE 1 /* address space attached */ 253 #define GLOF_LVB 2 /* Lock Value Block attached */ 254 #define GLOF_LRU 4 /* LRU managed */ 255 #define GLOF_NONDISK 8 /* not I/O related */ 256 }; 257 258 enum { 259 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */ 260 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */ 261 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */ 262 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */ 263 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */ 264 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */ 265 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */ 266 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */ 267 GFS2_NR_LKSTATS 268 }; 269 270 struct gfs2_lkstats { 271 u64 stats[GFS2_NR_LKSTATS]; 272 }; 273 274 enum { 275 /* States */ 276 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */ 277 HIF_FIRST = 7, 278 HIF_WAIT = 10, 279 }; 280 281 struct gfs2_holder { 282 struct list_head gh_list; 283 284 struct gfs2_glock *gh_gl; 285 struct pid *gh_owner_pid; 286 u16 gh_flags; 287 u16 gh_state; 288 289 int gh_error; 290 unsigned long gh_iflags; /* HIF_... */ 291 unsigned long gh_ip; 292 }; 293 294 /* Number of quota types we support */ 295 #define GFS2_MAXQUOTAS 2 296 297 struct gfs2_qadata { /* quota allocation data */ 298 /* Quota stuff */ 299 struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS]; 300 struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS]; 301 unsigned int qa_qd_num; 302 int qa_ref; 303 }; 304 305 /* Resource group multi-block reservation, in order of appearance: 306 307 Step 1. Function prepares to write, allocates a mb, sets the size hint. 308 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info 309 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use 310 Step 4. Bits are assigned from the rgrp based on either the reservation 311 or wherever it can. 312 */ 313 314 struct gfs2_blkreserv { 315 struct rb_node rs_node; /* link to other block reservations */ 316 struct gfs2_rbm rs_rbm; /* Start of reservation */ 317 u32 rs_free; /* how many blocks are still free */ 318 }; 319 320 /* 321 * Allocation parameters 322 * @target: The number of blocks we'd ideally like to allocate 323 * @aflags: The flags (e.g. Orlov flag) 324 * 325 * The intent is to gradually expand this structure over time in 326 * order to give more information, e.g. alignment, min extent size 327 * to the allocation code. 328 */ 329 struct gfs2_alloc_parms { 330 u64 target; 331 u32 min_target; 332 u32 aflags; 333 u64 allowed; 334 }; 335 336 enum { 337 GLF_LOCK = 1, 338 GLF_DEMOTE = 3, 339 GLF_PENDING_DEMOTE = 4, 340 GLF_DEMOTE_IN_PROGRESS = 5, 341 GLF_DIRTY = 6, 342 GLF_LFLUSH = 7, 343 GLF_INVALIDATE_IN_PROGRESS = 8, 344 GLF_REPLY_PENDING = 9, 345 GLF_INITIAL = 10, 346 GLF_FROZEN = 11, 347 GLF_LRU = 13, 348 GLF_OBJECT = 14, /* Used only for tracing */ 349 GLF_BLOCKING = 15, 350 GLF_INODE_CREATING = 16, /* Inode creation occurring */ 351 GLF_PENDING_DELETE = 17, 352 GLF_FREEING = 18, /* Wait for glock to be freed */ 353 }; 354 355 struct gfs2_glock { 356 unsigned long gl_flags; /* GLF_... */ 357 struct lm_lockname gl_name; 358 359 struct lockref gl_lockref; 360 361 /* State fields protected by gl_lockref.lock */ 362 unsigned int gl_state:2, /* Current state */ 363 gl_target:2, /* Target state */ 364 gl_demote_state:2, /* State requested by remote node */ 365 gl_req:2, /* State in last dlm request */ 366 gl_reply:8; /* Last reply from the dlm */ 367 368 unsigned long gl_demote_time; /* time of first demote request */ 369 long gl_hold_time; 370 struct list_head gl_holders; 371 372 const struct gfs2_glock_operations *gl_ops; 373 ktime_t gl_dstamp; 374 struct gfs2_lkstats gl_stats; 375 struct dlm_lksb gl_lksb; 376 unsigned long gl_tchange; 377 void *gl_object; 378 379 struct list_head gl_lru; 380 struct list_head gl_ail_list; 381 atomic_t gl_ail_count; 382 atomic_t gl_revokes; 383 struct delayed_work gl_work; 384 /* For iopen glocks only */ 385 struct { 386 struct delayed_work gl_delete; 387 u64 gl_no_formal_ino; 388 }; 389 struct rcu_head gl_rcu; 390 struct rhash_head gl_node; 391 }; 392 393 enum { 394 GIF_INVALID = 0, 395 GIF_QD_LOCKED = 1, 396 GIF_ALLOC_FAILED = 2, 397 GIF_SW_PAGED = 3, 398 GIF_FREE_VFS_INODE = 5, 399 GIF_GLOP_PENDING = 6, 400 GIF_DEFERRED_DELETE = 7, 401 }; 402 403 struct gfs2_inode { 404 struct inode i_inode; 405 u64 i_no_addr; 406 u64 i_no_formal_ino; 407 u64 i_generation; 408 u64 i_eattr; 409 unsigned long i_flags; /* GIF_... */ 410 struct gfs2_glock *i_gl; /* Move into i_gh? */ 411 struct gfs2_holder i_iopen_gh; 412 struct gfs2_holder i_gh; /* for prepare/commit_write only */ 413 struct gfs2_qadata *i_qadata; /* quota allocation data */ 414 struct gfs2_holder i_rgd_gh; 415 struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */ 416 u64 i_goal; /* goal block for allocations */ 417 atomic_t i_sizehint; /* hint of the write size */ 418 struct rw_semaphore i_rw_mutex; 419 struct list_head i_ordered; 420 struct list_head i_trunc_list; 421 __be64 *i_hash_cache; 422 u32 i_entries; 423 u32 i_diskflags; 424 u8 i_height; 425 u8 i_depth; 426 u16 i_rahead; 427 }; 428 429 /* 430 * Since i_inode is the first element of struct gfs2_inode, 431 * this is effectively a cast. 432 */ 433 static inline struct gfs2_inode *GFS2_I(struct inode *inode) 434 { 435 return container_of(inode, struct gfs2_inode, i_inode); 436 } 437 438 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) 439 { 440 return inode->i_sb->s_fs_info; 441 } 442 443 struct gfs2_file { 444 struct mutex f_fl_mutex; 445 struct gfs2_holder f_fl_gh; 446 }; 447 448 struct gfs2_revoke_replay { 449 struct list_head rr_list; 450 u64 rr_blkno; 451 unsigned int rr_where; 452 }; 453 454 enum { 455 QDF_CHANGE = 1, 456 QDF_LOCKED = 2, 457 QDF_REFRESH = 3, 458 QDF_QMSG_QUIET = 4, 459 }; 460 461 struct gfs2_quota_data { 462 struct hlist_bl_node qd_hlist; 463 struct list_head qd_list; 464 struct kqid qd_id; 465 struct gfs2_sbd *qd_sbd; 466 struct lockref qd_lockref; 467 struct list_head qd_lru; 468 unsigned qd_hash; 469 470 unsigned long qd_flags; /* QDF_... */ 471 472 s64 qd_change; 473 s64 qd_change_sync; 474 475 unsigned int qd_slot; 476 unsigned int qd_slot_count; 477 478 struct buffer_head *qd_bh; 479 struct gfs2_quota_change *qd_bh_qc; 480 unsigned int qd_bh_count; 481 482 struct gfs2_glock *qd_gl; 483 struct gfs2_quota_lvb qd_qb; 484 485 u64 qd_sync_gen; 486 unsigned long qd_last_warn; 487 struct rcu_head qd_rcu; 488 }; 489 490 enum { 491 TR_TOUCHED = 1, 492 TR_ATTACHED = 2, 493 TR_ALLOCED = 3, 494 }; 495 496 struct gfs2_trans { 497 unsigned long tr_ip; 498 499 unsigned int tr_blocks; 500 unsigned int tr_revokes; 501 unsigned int tr_reserved; 502 unsigned long tr_flags; 503 504 unsigned int tr_num_buf_new; 505 unsigned int tr_num_databuf_new; 506 unsigned int tr_num_buf_rm; 507 unsigned int tr_num_databuf_rm; 508 unsigned int tr_num_revoke; 509 unsigned int tr_num_revoke_rm; 510 511 struct list_head tr_list; 512 struct list_head tr_databuf; 513 struct list_head tr_buf; 514 515 unsigned int tr_first; 516 struct list_head tr_ail1_list; 517 struct list_head tr_ail2_list; 518 }; 519 520 struct gfs2_journal_extent { 521 struct list_head list; 522 523 unsigned int lblock; /* First logical block */ 524 u64 dblock; /* First disk block */ 525 u64 blocks; 526 }; 527 528 struct gfs2_jdesc { 529 struct list_head jd_list; 530 struct list_head extent_list; 531 unsigned int nr_extents; 532 struct work_struct jd_work; 533 struct inode *jd_inode; 534 unsigned long jd_flags; 535 #define JDF_RECOVERY 1 536 unsigned int jd_jid; 537 u32 jd_blocks; 538 int jd_recover_error; 539 /* Replay stuff */ 540 541 unsigned int jd_found_blocks; 542 unsigned int jd_found_revokes; 543 unsigned int jd_replayed_blocks; 544 545 struct list_head jd_revoke_list; 546 unsigned int jd_replay_tail; 547 548 u64 jd_no_addr; 549 }; 550 551 struct gfs2_statfs_change_host { 552 s64 sc_total; 553 s64 sc_free; 554 s64 sc_dinodes; 555 }; 556 557 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF 558 #define GFS2_QUOTA_OFF 0 559 #define GFS2_QUOTA_ACCOUNT 1 560 #define GFS2_QUOTA_ON 2 561 562 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED 563 #define GFS2_DATA_WRITEBACK 1 564 #define GFS2_DATA_ORDERED 2 565 566 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW 567 #define GFS2_ERRORS_WITHDRAW 0 568 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ 569 #define GFS2_ERRORS_RO 2 /* place holder for future feature */ 570 #define GFS2_ERRORS_PANIC 3 571 572 struct gfs2_args { 573 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ 574 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ 575 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ 576 unsigned int ar_spectator:1; /* Don't get a journal */ 577 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ 578 unsigned int ar_debug:1; /* Oops on errors */ 579 unsigned int ar_posix_acl:1; /* Enable posix acls */ 580 unsigned int ar_quota:2; /* off/account/on */ 581 unsigned int ar_suiddir:1; /* suiddir support */ 582 unsigned int ar_data:2; /* ordered/writeback */ 583 unsigned int ar_meta:1; /* mount metafs */ 584 unsigned int ar_discard:1; /* discard requests */ 585 unsigned int ar_errors:2; /* errors=withdraw | panic */ 586 unsigned int ar_nobarrier:1; /* do not send barriers */ 587 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ 588 unsigned int ar_loccookie:1; /* use location based readdir 589 cookies */ 590 s32 ar_commit; /* Commit interval */ 591 s32 ar_statfs_quantum; /* The fast statfs interval */ 592 s32 ar_quota_quantum; /* The quota interval */ 593 s32 ar_statfs_percent; /* The % change to force sync */ 594 }; 595 596 struct gfs2_tune { 597 spinlock_t gt_spin; 598 599 unsigned int gt_logd_secs; 600 601 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ 602 unsigned int gt_quota_scale_num; /* Numerator */ 603 unsigned int gt_quota_scale_den; /* Denominator */ 604 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ 605 unsigned int gt_new_files_jdata; 606 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ 607 unsigned int gt_complain_secs; 608 unsigned int gt_statfs_quantum; 609 unsigned int gt_statfs_slow; 610 }; 611 612 enum { 613 SDF_JOURNAL_CHECKED = 0, 614 SDF_JOURNAL_LIVE = 1, 615 SDF_WITHDRAWN = 2, 616 SDF_NOBARRIERS = 3, 617 SDF_NORECOVERY = 4, 618 SDF_DEMOTE = 5, 619 SDF_NOJOURNALID = 6, 620 SDF_RORECOVERY = 7, /* read only recovery */ 621 SDF_SKIP_DLM_UNLOCK = 8, 622 SDF_FORCE_AIL_FLUSH = 9, 623 SDF_FS_FROZEN = 10, 624 SDF_WITHDRAWING = 11, /* Will withdraw eventually */ 625 SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */ 626 SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */ 627 SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are 628 withdrawing */ 629 }; 630 631 enum gfs2_freeze_state { 632 SFS_UNFROZEN = 0, 633 SFS_STARTING_FREEZE = 1, 634 SFS_FROZEN = 2, 635 }; 636 637 #define GFS2_FSNAME_LEN 256 638 639 struct gfs2_inum_host { 640 u64 no_formal_ino; 641 u64 no_addr; 642 }; 643 644 struct gfs2_sb_host { 645 u32 sb_magic; 646 u32 sb_type; 647 u32 sb_format; 648 649 u32 sb_fs_format; 650 u32 sb_multihost_format; 651 u32 sb_bsize; 652 u32 sb_bsize_shift; 653 654 struct gfs2_inum_host sb_master_dir; 655 struct gfs2_inum_host sb_root_dir; 656 657 char sb_lockproto[GFS2_LOCKNAME_LEN]; 658 char sb_locktable[GFS2_LOCKNAME_LEN]; 659 }; 660 661 /* 662 * lm_mount() return values 663 * 664 * ls_jid - the journal ID this node should use 665 * ls_first - this node is the first to mount the file system 666 * ls_lockspace - lock module's context for this file system 667 * ls_ops - lock module's functions 668 */ 669 670 struct lm_lockstruct { 671 int ls_jid; 672 unsigned int ls_first; 673 const struct lm_lockops *ls_ops; 674 dlm_lockspace_t *ls_dlm; 675 676 int ls_recover_jid_done; /* These two are deprecated, */ 677 int ls_recover_jid_status; /* used previously by gfs_controld */ 678 679 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ 680 struct dlm_lksb ls_control_lksb; /* control_lock */ 681 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ 682 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ 683 char *ls_lvb_bits; 684 685 spinlock_t ls_recover_spin; /* protects following fields */ 686 unsigned long ls_recover_flags; /* DFL_ */ 687 uint32_t ls_recover_mount; /* gen in first recover_done cb */ 688 uint32_t ls_recover_start; /* gen in last recover_done cb */ 689 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ 690 uint32_t ls_recover_size; /* size of recover_submit, recover_result */ 691 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ 692 uint32_t *ls_recover_result; /* result of last jid recovery */ 693 }; 694 695 struct gfs2_pcpu_lkstats { 696 /* One struct for each glock type */ 697 struct gfs2_lkstats lkstats[10]; 698 }; 699 700 /* List of local (per node) statfs inodes */ 701 struct local_statfs_inode { 702 struct list_head si_list; 703 struct inode *si_sc_inode; 704 unsigned int si_jid; /* journal id this statfs inode corresponds to */ 705 }; 706 707 struct gfs2_sbd { 708 struct super_block *sd_vfs; 709 struct gfs2_pcpu_lkstats __percpu *sd_lkstats; 710 struct kobject sd_kobj; 711 struct completion sd_kobj_unregister; 712 unsigned long sd_flags; /* SDF_... */ 713 struct gfs2_sb_host sd_sb; 714 715 /* Constants computed on mount */ 716 717 u32 sd_fsb2bb; 718 u32 sd_fsb2bb_shift; 719 u32 sd_diptrs; /* Number of pointers in a dinode */ 720 u32 sd_inptrs; /* Number of pointers in a indirect block */ 721 u32 sd_ldptrs; /* Number of pointers in a log descriptor block */ 722 u32 sd_jbsize; /* Size of a journaled data block */ 723 u32 sd_hash_bsize; /* sizeof(exhash block) */ 724 u32 sd_hash_bsize_shift; 725 u32 sd_hash_ptrs; /* Number of pointers in a hash block */ 726 u32 sd_qc_per_block; 727 u32 sd_blocks_per_bitmap; 728 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ 729 u32 sd_max_height; /* Max height of a file's metadata tree */ 730 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; 731 u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ 732 733 struct gfs2_args sd_args; /* Mount arguments */ 734 struct gfs2_tune sd_tune; /* Filesystem tuning structure */ 735 736 /* Lock Stuff */ 737 738 struct lm_lockstruct sd_lockstruct; 739 struct gfs2_holder sd_live_gh; 740 struct gfs2_glock *sd_rename_gl; 741 struct gfs2_glock *sd_freeze_gl; 742 struct work_struct sd_freeze_work; 743 wait_queue_head_t sd_glock_wait; 744 wait_queue_head_t sd_async_glock_wait; 745 atomic_t sd_glock_disposal; 746 struct completion sd_locking_init; 747 struct completion sd_wdack; 748 struct delayed_work sd_control_work; 749 750 /* Inode Stuff */ 751 752 struct dentry *sd_master_dir; 753 struct dentry *sd_root_dir; 754 755 struct inode *sd_jindex; 756 struct inode *sd_statfs_inode; 757 struct inode *sd_sc_inode; 758 struct list_head sd_sc_inodes_list; 759 struct inode *sd_qc_inode; 760 struct inode *sd_rindex; 761 struct inode *sd_quota_inode; 762 763 /* StatFS stuff */ 764 765 spinlock_t sd_statfs_spin; 766 struct gfs2_statfs_change_host sd_statfs_master; 767 struct gfs2_statfs_change_host sd_statfs_local; 768 int sd_statfs_force_sync; 769 770 /* Resource group stuff */ 771 772 int sd_rindex_uptodate; 773 spinlock_t sd_rindex_spin; 774 struct rb_root sd_rindex_tree; 775 unsigned int sd_rgrps; 776 unsigned int sd_max_rg_data; 777 778 /* Journal index stuff */ 779 780 struct list_head sd_jindex_list; 781 spinlock_t sd_jindex_spin; 782 struct mutex sd_jindex_mutex; 783 unsigned int sd_journals; 784 785 struct gfs2_jdesc *sd_jdesc; 786 struct gfs2_holder sd_journal_gh; 787 struct gfs2_holder sd_jinode_gh; 788 struct gfs2_glock *sd_jinode_gl; 789 790 struct gfs2_holder sd_sc_gh; 791 struct gfs2_holder sd_qc_gh; 792 793 struct completion sd_journal_ready; 794 795 /* Daemon stuff */ 796 797 struct task_struct *sd_logd_process; 798 struct task_struct *sd_quotad_process; 799 800 /* Quota stuff */ 801 802 struct list_head sd_quota_list; 803 atomic_t sd_quota_count; 804 struct mutex sd_quota_mutex; 805 struct mutex sd_quota_sync_mutex; 806 wait_queue_head_t sd_quota_wait; 807 struct list_head sd_trunc_list; 808 spinlock_t sd_trunc_lock; 809 810 unsigned int sd_quota_slots; 811 unsigned long *sd_quota_bitmap; 812 spinlock_t sd_bitmap_lock; 813 814 u64 sd_quota_sync_gen; 815 816 /* Log stuff */ 817 818 struct address_space sd_aspace; 819 820 spinlock_t sd_log_lock; 821 822 struct gfs2_trans *sd_log_tr; 823 unsigned int sd_log_blks_reserved; 824 int sd_log_committed_revoke; 825 826 atomic_t sd_log_pinned; 827 unsigned int sd_log_num_revoke; 828 829 struct list_head sd_log_revokes; 830 struct list_head sd_log_ordered; 831 spinlock_t sd_ordered_lock; 832 833 atomic_t sd_log_thresh1; 834 atomic_t sd_log_thresh2; 835 atomic_t sd_log_blks_free; 836 atomic_t sd_log_blks_needed; 837 wait_queue_head_t sd_log_waitq; 838 wait_queue_head_t sd_logd_waitq; 839 840 u64 sd_log_sequence; 841 unsigned int sd_log_head; 842 unsigned int sd_log_tail; 843 int sd_log_idle; 844 845 struct rw_semaphore sd_log_flush_lock; 846 atomic_t sd_log_in_flight; 847 struct bio *sd_log_bio; 848 wait_queue_head_t sd_log_flush_wait; 849 int sd_log_error; /* First log error */ 850 wait_queue_head_t sd_withdraw_wait; 851 852 atomic_t sd_reserving_log; 853 wait_queue_head_t sd_reserving_log_wait; 854 855 unsigned int sd_log_flush_head; 856 857 spinlock_t sd_ail_lock; 858 struct list_head sd_ail1_list; 859 struct list_head sd_ail2_list; 860 861 /* For quiescing the filesystem */ 862 struct gfs2_holder sd_freeze_gh; 863 atomic_t sd_freeze_state; 864 struct mutex sd_freeze_mutex; 865 866 char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2]; 867 char sd_table_name[GFS2_FSNAME_LEN]; 868 char sd_proto_name[GFS2_FSNAME_LEN]; 869 870 /* Debugging crud */ 871 872 unsigned long sd_last_warning; 873 struct dentry *debugfs_dir; /* debugfs directory */ 874 unsigned long sd_glock_dqs_held; 875 }; 876 877 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) 878 { 879 gl->gl_stats.stats[which]++; 880 } 881 882 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) 883 { 884 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 885 preempt_disable(); 886 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; 887 preempt_enable(); 888 } 889 890 extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); 891 892 static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip) 893 { 894 return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); 895 } 896 897 #endif /* __INCORE_DOT_H__ */ 898 899