1 /* 2 * Copyright (c) 2011-2018 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@dragonflybsd.org> 6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 3. Neither the name of The DragonFly Project nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific, prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES 38 * 39 * This header file contains structures used internally by the HAMMER2 40 * implementation. See hammer2_disk.h for on-disk structures. 41 * 42 * There is an in-memory representation of all on-media data structure. 43 * Almost everything is represented by a hammer2_chain structure in-memory. 44 * Other higher-level structures typically map to chains. 45 * 46 * A great deal of data is accessed simply via its buffer cache buffer, 47 * which is mapped for the duration of the chain's lock. Hammer2 must 48 * implement its own buffer cache layer on top of the system layer to 49 * allow for different threads to lock different sub-block-sized buffers. 50 * 51 * When modifications are made to a chain a new filesystem block must be 52 * allocated. Multiple modifications do not typically allocate new blocks 53 * until the current block has been flushed. Flushes do not block the 54 * front-end unless the front-end operation crosses the current inode being 55 * flushed. 56 * 57 * The in-memory representation may remain cached (for example in order to 58 * placemark clustering locks) even after the related data has been 59 * detached. 60 */ 61 62 #ifndef _VFS_HAMMER2_HAMMER2_H_ 63 #define _VFS_HAMMER2_HAMMER2_H_ 64 65 #ifdef _KERNEL 66 #include <sys/param.h> 67 #endif 68 #include <sys/types.h> 69 #ifdef _KERNEL 70 #include <sys/kernel.h> 71 #endif 72 #include <sys/conf.h> 73 #ifdef _KERNEL 74 #include <sys/systm.h> 75 #endif 76 #include <sys/tree.h> 77 #include <sys/malloc.h> 78 #include <sys/mount.h> 79 #include <sys/vnode.h> 80 #include <sys/proc.h> 81 #include <sys/mountctl.h> 82 #include <sys/priv.h> 83 #include <sys/stat.h> 84 #include <sys/thread.h> 85 #include <sys/globaldata.h> 86 #include <sys/lockf.h> 87 #include <sys/buf.h> 88 #include <sys/queue.h> 89 #include <sys/limits.h> 90 #include <sys/dmsg.h> 91 #include <sys/mutex.h> 92 #ifdef _KERNEL 93 #include <sys/kern_syscall.h> 94 #endif 95 96 #ifdef _KERNEL 97 #include <sys/signal2.h> 98 #include <sys/buf2.h> 99 #include <sys/mutex2.h> 100 #include <sys/spinlock2.h> 101 #endif 102 103 #include "hammer2_xxhash.h" 104 #include "hammer2_disk.h" 105 #include "hammer2_mount.h" 106 #include "hammer2_ioctl.h" 107 108 struct hammer2_io; 109 struct hammer2_chain; 110 struct hammer2_cluster; 111 struct hammer2_inode; 112 struct hammer2_depend; 113 struct hammer2_dev; 114 struct hammer2_pfs; 115 struct hammer2_span; 116 struct hammer2_msg; 117 struct hammer2_thread; 118 union hammer2_xop; 119 120 /* 121 * Mutex and lock shims. Hammer2 requires support for asynchronous and 122 * abortable locks, and both exclusive and shared spinlocks. Normal 123 * synchronous non-abortable locks can be substituted for spinlocks. 124 */ 125 typedef mtx_t hammer2_mtx_t; 126 typedef mtx_link_t hammer2_mtx_link_t; 127 typedef mtx_state_t hammer2_mtx_state_t; 128 129 typedef struct spinlock hammer2_spin_t; 130 131 #define hammer2_mtx_ex mtx_lock_ex_quick 132 #define hammer2_mtx_ex_try mtx_lock_ex_try 133 #define hammer2_mtx_sh mtx_lock_sh_quick 134 #define hammer2_mtx_sh_again mtx_lock_sh_again 135 #define hammer2_mtx_sh_try mtx_lock_sh_try 136 #define hammer2_mtx_unlock mtx_unlock 137 #define hammer2_mtx_downgrade mtx_downgrade 138 #define hammer2_mtx_owned mtx_owned 139 #define hammer2_mtx_init mtx_init 140 #define hammer2_mtx_temp_release mtx_lock_temp_release 141 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 142 #define hammer2_mtx_refs mtx_lockrefs 143 144 #define hammer2_spin_init spin_init 145 #define hammer2_spin_sh spin_lock_shared 146 #define hammer2_spin_ex spin_lock 147 #define hammer2_spin_unsh spin_unlock_shared 148 #define hammer2_spin_unex spin_unlock 149 150 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 151 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 152 153 typedef struct hammer2_xop_list hammer2_xop_list_t; 154 155 #ifdef _KERNEL 156 /* 157 * General lock support 158 */ 159 static __inline 160 int 161 hammer2_mtx_upgrade_try(hammer2_mtx_t *mtx) 162 { 163 return mtx_upgrade_try(mtx); 164 } 165 166 #endif 167 168 /* 169 * The xid tracks internal transactional updates. 170 * 171 * XXX fix-me, really needs to be 64-bits 172 */ 173 typedef uint32_t hammer2_xid_t; 174 175 #define HAMMER2_XID_MIN 0x00000000U 176 #define HAMMER2_XID_MAX 0x7FFFFFFFU 177 178 /* 179 * Cap the dynamic calculation for the maximum number of dirty 180 * chains and dirty inodes allowed. 181 */ 182 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 183 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 184 185 /* 186 * The chain structure tracks a portion of the media topology from the 187 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 188 * data blocks, and freemap nodes and leafs. 189 * 190 * The chain structure utilizes a simple singly-homed topology and the 191 * chain's in-memory topology will move around as the chains do, due mainly 192 * to renames and indirect block creation. 193 * 194 * Block Table Updates 195 * 196 * Block table updates for insertions and updates are delayed until the 197 * flush. This allows us to avoid having to modify the parent chain 198 * all the way to the root. 199 * 200 * Block table deletions are performed immediately (modifying the parent 201 * in the process) because the flush code uses the chain structure to 202 * track delayed updates and the chain will be (likely) gone or moved to 203 * another location in the topology after a deletion. 204 * 205 * A prior iteration of the code tried to keep the relationship intact 206 * on deletes by doing a delete-duplicate operation on the chain, but 207 * it added way too much complexity to the codebase. 208 * 209 * Flush Synchronization 210 * 211 * The flush code must flush modified chains bottom-up. Because chain 212 * structures can shift around and are NOT topologically stable, 213 * modified chains are independently indexed for the flush. As the flush 214 * runs it modifies (or further modifies) and updates the parents, 215 * propagating the flush all the way to the volume root. 216 * 217 * Modifying front-end operations can occur during a flush but will block 218 * in two cases: (1) when the front-end tries to operate on the inode 219 * currently in the midst of being flushed and (2) if the front-end 220 * crosses an inode currently being flushed (such as during a rename). 221 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 222 * the flusher is currently working on "a/b/c", the rename will block 223 * temporarily in order to ensure that "x" exists in one place or the 224 * other. 225 * 226 * Meta-data statistics are updated by the flusher. The front-end will 227 * make estimates but meta-data must be fully synchronized only during a 228 * flush in order to ensure that it remains correct across a crash. 229 * 230 * Multiple flush synchronizations can theoretically be in-flight at the 231 * same time but the implementation is not coded to handle the case and 232 * currently serializes them. 233 * 234 * Snapshots: 235 * 236 * Snapshots currently require the subdirectory tree being snapshotted 237 * to be flushed. The snapshot then creates a new super-root inode which 238 * copies the flushed blockdata of the directory or file that was 239 * snapshotted. 240 * 241 * RBTREE NOTES: 242 * 243 * - Note that the radix tree runs in powers of 2 only so sub-trees 244 * cannot straddle edges. 245 */ 246 RB_HEAD(hammer2_chain_tree, hammer2_chain); 247 TAILQ_HEAD(h2_flush_list, hammer2_chain); 248 TAILQ_HEAD(h2_core_list, hammer2_chain); 249 250 struct hammer2_reptrack { 251 hammer2_spin_t spin; 252 struct hammer2_reptrack *next; 253 struct hammer2_chain *chain; 254 }; 255 256 /* 257 * Core topology for chain (embedded in chain). Protected by a spinlock. 258 */ 259 struct hammer2_chain_core { 260 hammer2_spin_t spin; 261 struct hammer2_reptrack *reptrack; 262 struct hammer2_chain_tree rbtree; /* sub-chains */ 263 int live_zero; /* blockref array opt */ 264 u_int live_count; /* live (not deleted) chains in tree */ 265 u_int chain_count; /* live + deleted chains under core */ 266 int generation; /* generation number (inserts only) */ 267 }; 268 269 typedef struct hammer2_chain_core hammer2_chain_core_t; 270 271 RB_HEAD(hammer2_io_tree, hammer2_io); 272 273 /* 274 * DIO - Management structure wrapping system buffer cache. 275 * 276 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 277 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 278 * structures. 279 */ 280 /* #define HAMMER2_IO_DEBUG */ 281 282 #ifdef HAMMER2_IO_DEBUG 283 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 284 #define HAMMER2_IO_DEBUG_CALL , file, line 285 #define HAMMER2_IO_DEBUG_COUNT 2048 286 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 287 #else 288 #define HAMMER2_IO_DEBUG_ARGS 289 #define HAMMER2_IO_DEBUG_CALL 290 #endif 291 292 struct hammer2_io { 293 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 294 struct hammer2_dev *hmp; 295 struct buf *bp; 296 off_t pbase; 297 uint64_t refs; 298 int psize; 299 int act; /* activity */ 300 int btype; /* approximate BREF_TYPE_* */ 301 int ticks; 302 int error; 303 #ifdef HAMMER2_IO_DEBUG 304 int debug_index; 305 #else 306 int unused01; 307 #endif 308 uint64_t dedup_valid; /* valid for dedup operation */ 309 uint64_t dedup_alloc; /* allocated / de-dupable */ 310 #ifdef HAMMER2_IO_DEBUG 311 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 312 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 313 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 314 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 315 #endif 316 }; 317 318 typedef struct hammer2_io hammer2_io_t; 319 320 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 321 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 322 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 323 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 324 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 325 326 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 327 328 /* 329 * Primary chain structure keeps track of the topology in-memory. 330 */ 331 struct hammer2_chain { 332 hammer2_mtx_t lock; 333 hammer2_chain_core_t core; 334 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 335 hammer2_blockref_t bref; 336 struct hammer2_chain *parent; 337 struct hammer2_dev *hmp; 338 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 339 340 struct lock diolk; /* xop focus interlock */ 341 hammer2_io_t *dio; /* physical data buffer */ 342 hammer2_media_data_t *data; /* data pointer shortcut */ 343 u_int bytes; /* physical data size */ 344 u_int flags; 345 u_int refs; 346 u_int lockcnt; 347 int error; /* on-lock data error state */ 348 int cache_index; /* heur speeds up lookup */ 349 350 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 351 }; 352 353 typedef struct hammer2_chain hammer2_chain_t; 354 355 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 356 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 357 358 /* 359 * Special notes on flags: 360 * 361 * INITIAL - This flag allows a chain to be created and for storage to 362 * be allocated without having to immediately instantiate the 363 * related buffer. The data is assumed to be all-zeros. It 364 * is primarily used for indirect blocks. 365 * 366 * MODIFIED - The chain's media data has been modified. Prevents chain 367 * free on lastdrop if still in the topology. 368 * 369 * UPDATE - Chain might not be modified but parent blocktable needs 370 * an update. Prevents chain free on lastdrop if still in 371 * the topology. 372 * 373 * FICTITIOUS - Faked chain as a placeholder for an error condition. This 374 * chain is unsuitable for I/O. 375 * 376 * BMAPPED - Indicates that the chain is present in the parent blockmap. 377 * 378 * BMAPUPD - Indicates that the chain is present but needs to be updated 379 * in the parent blockmap. 380 */ 381 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 382 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 383 #define HAMMER2_CHAIN_DESTROY 0x00000004 384 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 385 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 386 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 387 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 388 #define HAMMER2_CHAIN_UNUSED0080 0x00000080 389 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 390 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 391 #define HAMMER2_CHAIN_FICTITIOUS 0x00000400 /* unsuitable for I/O */ 392 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 393 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 394 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 395 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 396 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 397 #define HAMMER2_CHAIN_EMBEDDED 0x00010000 /* embedded data */ 398 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 399 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */ 400 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */ 401 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 402 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 403 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 404 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 405 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 406 407 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 408 HAMMER2_CHAIN_UPDATE | \ 409 HAMMER2_CHAIN_ONFLUSH | \ 410 HAMMER2_CHAIN_DESTROY) 411 412 /* 413 * Hammer2 error codes, used by chain->error and cluster->error. The error 414 * code is typically set on-lock unless no I/O was requested, and set on 415 * I/O otherwise. If set for a cluster it generally means that the cluster 416 * code could not find a valid copy to present. 417 * 418 * All H2 error codes are flags and can be accumulated by ORing them 419 * together. 420 * 421 * IO - An I/O error occurred 422 * CHECK - I/O succeeded but did not match the check code 423 * INCOMPLETE - A cluster is not complete enough to use, or 424 * a chain cannot be loaded because its parent has an error. 425 * 426 * NOTE: API allows callers to check zero/non-zero to determine if an error 427 * condition exists. 428 * 429 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 430 * NULL on other errors. Check chain->error, not chain->data. 431 */ 432 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 433 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 434 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 435 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 436 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 437 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 438 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 439 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 440 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 441 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 442 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 443 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 444 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 445 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 446 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 447 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 448 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 449 #define HAMMER2_ERROR_EDEADLK 0x00010000 450 #define HAMMER2_ERROR_ESRCH 0x00020000 451 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 452 453 /* 454 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 455 * 456 * NOTES: 457 * NODATA - Asks that the chain->data not be resolved in order 458 * to avoid I/O. 459 * 460 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 461 * the inode itself if the inode is in DIRECTDATA mode 462 * (i.e. file is <= 512 bytes). Used by the synchronization 463 * code to prevent confusion. 464 * 465 * SHARED - The input chain is expected to be locked shared, 466 * and the output chain is locked shared. 467 * 468 * MATCHIND - Allows an indirect block / freemap node to be returned 469 * when the passed key range matches the radix. Remember 470 * that key_end is inclusive (e.g. {0x000,0xFFF}, 471 * not {0x000,0x1000}). 472 * 473 * (Cannot be used for remote or cluster ops). 474 * 475 * ALLNODES - Allows NULL focus. 476 * 477 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 478 * missing, bulk file data is not resolved but inodes and 479 * other meta-data will. 480 */ 481 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 482 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 483 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 484 #define HAMMER2_LOOKUP_SHARED 0x00000100 485 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 486 #define HAMMER2_LOOKUP_ALLNODES 0x00000400 /* allow NULL focus */ 487 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 488 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 489 490 /* 491 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 492 * 493 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 494 * blocks in the INITIAL-create state. 495 */ 496 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 497 #define HAMMER2_MODIFY_NO_MODIFY_TID 0x00000004 498 #define HAMMER2_MODIFY_UNUSED0008 0x00000008 499 500 /* 501 * Flags passed to hammer2_chain_lock() 502 * 503 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 504 * will be made to either the cluster being locked or any underlying 505 * cluster. It allows the cluster to lock and access data for a subset 506 * of available nodes instead of all available nodes. 507 * 508 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 509 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 510 * operation. 511 */ 512 #define HAMMER2_RESOLVE_NEVER 1 513 #define HAMMER2_RESOLVE_MAYBE 2 514 #define HAMMER2_RESOLVE_ALWAYS 3 515 #define HAMMER2_RESOLVE_MASK 0x0F 516 517 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 518 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 519 #define HAMMER2_RESOLVE_UNUSED40 0x40 520 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 521 522 /* 523 * Flags passed to hammer2_chain_delete() 524 */ 525 #define HAMMER2_DELETE_PERMANENT 0x0001 526 527 /* 528 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 529 * or hammer2_chain_create(). 530 */ 531 #define HAMMER2_INSERT_PFSROOT 0x0004 532 #define HAMMER2_INSERT_SAMEPARENT 0x0008 533 534 /* 535 * Flags passed to hammer2_chain_delete_duplicate() 536 */ 537 #define HAMMER2_DELDUP_RECORE 0x0001 538 539 /* 540 * Cluster different types of storage together for allocations 541 */ 542 #define HAMMER2_FREECACHE_INODE 0 543 #define HAMMER2_FREECACHE_INDIR 1 544 #define HAMMER2_FREECACHE_DATA 2 545 #define HAMMER2_FREECACHE_UNUSED3 3 546 #define HAMMER2_FREECACHE_TYPES 4 547 548 /* 549 * hammer2_freemap_alloc() block preference 550 */ 551 #define HAMMER2_OFF_NOPREF ((hammer2_off_t)-1) 552 553 /* 554 * BMAP read-ahead maximum parameters 555 */ 556 #define HAMMER2_BMAP_COUNT 16 /* max bmap read-ahead */ 557 #define HAMMER2_BMAP_BYTES (HAMMER2_PBUFSIZE * HAMMER2_BMAP_COUNT) 558 559 /* 560 * hammer2_freemap_adjust() 561 */ 562 #define HAMMER2_FREEMAP_DORECOVER 1 563 #define HAMMER2_FREEMAP_DOMAYFREE 2 564 #define HAMMER2_FREEMAP_DOREALFREE 3 565 566 /* 567 * HAMMER2 cluster - A set of chains representing the same entity. 568 * 569 * hammer2_cluster typically represents a temporary set of representitive 570 * chains. The one exception is that a hammer2_cluster is embedded in 571 * hammer2_inode. This embedded cluster is ONLY used to track the 572 * representitive chains and cannot be directly locked. 573 * 574 * A cluster is usually temporary (and thus per-thread) for locking purposes, 575 * allowing us to embed the asynchronous storage required for cluster 576 * operations in the cluster itself and adjust the state and status without 577 * having to worry too much about SMP issues. 578 * 579 * The exception is the cluster embedded in the hammer2_inode structure. 580 * This is used to cache the cluster state on an inode-by-inode basis. 581 * Individual hammer2_chain structures not incorporated into clusters might 582 * also stick around to cache miscellanious elements. 583 * 584 * Because the cluster is a 'working copy' and is usually subject to cluster 585 * quorum rules, it is quite possible for us to end up with an insufficient 586 * number of live chains to execute an operation. If an insufficient number 587 * of chains remain in a working copy, the operation may have to be 588 * downgraded, retried, stall until the requisit number of chains are 589 * available, or possibly even error out depending on the mount type. 590 * 591 * A cluster's focus is set when it is locked. The focus can only be set 592 * to a chain still part of the synchronized set. 593 */ 594 #define HAMMER2_XOPFIFO 16 595 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 596 #define HAMMER2_XOPGROUPS 32 597 #define HAMMER2_XOPGROUPS_MASK (HAMMER2_XOPGROUPS - 1) 598 599 #define HAMMER2_MAXCLUSTER 8 600 #define HAMMER2_XOPMASK_CLUSTER (uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1) 601 #define HAMMER2_XOPMASK_VOP (uint64_t)0x0000000080000000LLU 602 #define HAMMER2_XOPMASK_FIFOW (uint64_t)0x0000000040000000LLU 603 #define HAMMER2_XOPMASK_WAIT (uint64_t)0x0000000020000000LLU 604 #define HAMMER2_XOPMASK_FEED (uint64_t)0x0000000100000000LLU 605 606 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 607 608 #define HAMMER2_SPECTHREADS 1 /* sync */ 609 610 struct hammer2_cluster_item { 611 hammer2_chain_t *chain; 612 int error; 613 uint32_t flags; 614 }; 615 616 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 617 618 /* 619 * INVALID - Invalid for focus, i.e. not part of synchronized set. 620 * Once set, this bit is sticky across operations. 621 * 622 * FEMOD - Indicates that front-end modifying operations can 623 * mess with this entry and MODSYNC will copy also 624 * effect it. 625 */ 626 #define HAMMER2_CITEM_INVALID 0x00000001 627 #define HAMMER2_CITEM_FEMOD 0x00000002 628 #define HAMMER2_CITEM_NULL 0x00000004 629 630 struct hammer2_cluster { 631 int refs; /* track for deallocation */ 632 int ddflag; 633 struct hammer2_pfs *pmp; 634 uint32_t flags; 635 int nchains; 636 int error; /* error code valid on lock */ 637 int focus_index; 638 hammer2_chain_t *focus; /* current focus (or mod) */ 639 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 640 }; 641 642 typedef struct hammer2_cluster hammer2_cluster_t; 643 644 /* 645 * WRHARD - Hard mounts can write fully synchronized 646 * RDHARD - Hard mounts can read fully synchronized 647 * UNHARD - Unsynchronized masters present 648 * NOHARD - No masters visible 649 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 650 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 651 * UNSOFT - Unsynchronized slaves present 652 * NOSOFT - No slaves visible 653 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 654 * MSYNCED - All masters are fully synchronized 655 * SSYNCED - All known local slaves are fully synchronized to masters 656 * 657 * All available masters are always incorporated. All PFSs belonging to a 658 * cluster (master, slave, copy, whatever) always try to synchronize the 659 * total number of known masters in the PFSs root inode. 660 * 661 * A cluster might have access to many slaves, copies, or caches, but we 662 * have a limited number of cluster slots. Any such elements which are 663 * directly mounted from block device(s) will always be incorporated. Note 664 * that SSYNCED only applies to such elements which are directly mounted, 665 * not to any remote slaves, copies, or caches that could be available. These 666 * bits are used to monitor and drive our synchronization threads. 667 * 668 * When asking the question 'is any data accessible at all', then a simple 669 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 670 * these bits are set the object can be read with certain caveats: 671 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 672 * and RDSLAVE - not authoritative, has some data but it could be old or 673 * incomplete. 674 * 675 * When both soft and hard mounts are available, data will be read and written 676 * via the soft mount only. But all might be in the cluster because 677 * background synchronization threads still need to do their work. 678 */ 679 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 680 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 681 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 682 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 683 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 684 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 685 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 686 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 687 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 688 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 689 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 690 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 691 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 692 693 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 694 HAMMER2_CLUSTER_RDSOFT | \ 695 HAMMER2_CLUSTER_RDSLAVE) 696 697 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 698 HAMMER2_CLUSTER_RDSOFT) 699 700 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 701 HAMMER2_CLUSTER_WRSOFT) 702 703 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 704 HAMMER2_CLUSTER_RDHARD | \ 705 HAMMER2_CLUSTER_WRSOFT | \ 706 HAMMER2_CLUSTER_RDSOFT | \ 707 HAMMER2_CLUSTER_MSYNCED | \ 708 HAMMER2_CLUSTER_SSYNCED) 709 710 /* 711 * Helper functions (cluster must be locked for flags to be valid). 712 */ 713 static __inline 714 int 715 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 716 { 717 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 718 } 719 720 static __inline 721 int 722 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 723 { 724 return (cluster->flags & HAMMER2_CLUSTER_WROK); 725 } 726 727 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 728 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 729 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 730 731 struct hammer2_depend { 732 TAILQ_ENTRY(hammer2_depend) entry; 733 struct inoq_head sideq; 734 long count; 735 int pass2; 736 int unused01; 737 }; 738 739 typedef struct hammer2_depend hammer2_depend_t; 740 741 /* 742 * A hammer2 inode. 743 * 744 * NOTE: The inode-embedded cluster is never used directly for I/O (since 745 * it may be shared). Instead it will be replicated-in and synchronized 746 * back out if changed. 747 */ 748 struct hammer2_inode { 749 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 750 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 751 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 752 hammer2_depend_t depend_static; /* (in-place allocation) */ 753 hammer2_mtx_t lock; /* inode lock */ 754 hammer2_mtx_t truncate_lock; /* prevent truncates */ 755 struct hammer2_pfs *pmp; /* PFS mount */ 756 struct vnode *vp; 757 struct spinlock cluster_spin; /* update cluster */ 758 hammer2_cluster_t cluster; 759 struct lockf advlock; 760 u_int flags; 761 u_int refs; /* +vpref, +flushref */ 762 uint8_t comp_heuristic; 763 hammer2_inode_meta_t meta; /* copy of meta-data */ 764 hammer2_off_t osize; 765 }; 766 767 typedef struct hammer2_inode hammer2_inode_t; 768 769 /* 770 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 771 * RESIZED - Inode truncated (any) or inode extended beyond 772 * EMBEDDED_BYTES. 773 * 774 * SYNCQ - Inode is included in the current filesystem sync. The 775 * DELETING and CREATING flags will be acted upon. 776 * 777 * SIDEQ - Inode has likely been disconnected from the vnode topology 778 * and so is not visible to the vnode-based filesystem syncer 779 * code, but is dirty and must be included in the next 780 * filesystem sync. These inodes are moved to the SYNCQ at 781 * the time the sync occurs. 782 * 783 * Inodes are not placed on this queue simply because they have 784 * become dirty, if a vnode is attached. 785 * 786 * DELETING - Inode is flagged for deletion during the next filesystem 787 * sync. That is, the inode's chain is currently connected 788 * and must be deleting during the current or next fs sync. 789 * 790 * CREATING - Inode is flagged for creation during the next filesystem 791 * sync. That is, the inode's chain topology exists (so 792 * kernel buffer flushes can occur), but is currently 793 * disconnected and must be inserted during the current or 794 * next fs sync. If the DELETING flag is also set, the 795 * topology can be thrown away instead. 796 * 797 * If an inode that is already part of the current filesystem sync is 798 * modified by the frontend, including by buffer flushes, the inode lock 799 * code detects the SYNCQ flag and moves the inode to the head of the 800 * flush-in-progress, then blocks until the flush has gotten past it. 801 */ 802 #define HAMMER2_INODE_MODIFIED 0x0001 803 #define HAMMER2_INODE_SROOT 0x0002 /* kmalloc special case */ 804 #define HAMMER2_INODE_RENAME_INPROG 0x0004 805 #define HAMMER2_INODE_ONRBTREE 0x0008 806 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_fsync */ 807 #define HAMMER2_INODE_UNUSED0020 0x0020 808 #define HAMMER2_INODE_ISUNLINKED 0x0040 809 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 810 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 811 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 812 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 813 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 814 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 815 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 816 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 817 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 818 819 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 820 HAMMER2_INODE_DIRTYDATA | \ 821 HAMMER2_INODE_DELETING | \ 822 HAMMER2_INODE_CREATING) 823 824 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 825 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 826 hammer2_tid_t); 827 828 /* 829 * Transaction management sub-structure under hammer2_pfs 830 */ 831 struct hammer2_trans { 832 uint32_t flags; 833 uint32_t sync_wait; 834 }; 835 836 typedef struct hammer2_trans hammer2_trans_t; 837 838 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 839 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 840 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 841 #define HAMMER2_TRANS_UNUSED10 0x10000000 842 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 843 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 844 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 845 846 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-MINIORADIX */ 847 #define HAMMER2_FREEMAP_HEUR_TYPES 8 848 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 849 HAMMER2_FREEMAP_HEUR_TYPES) 850 851 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 852 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 853 854 #define HAMMER2_FLUSH_TOP 0x0001 855 #define HAMMER2_FLUSH_ALL 0x0002 856 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 857 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 858 859 860 /* 861 * Hammer2 support thread element. 862 * 863 * Potentially many support threads can hang off of hammer2, primarily 864 * off the hammer2_pfs structure. Typically: 865 * 866 * td x Nodes A synchronization thread for each node. 867 * td x Nodes x workers Worker threads for frontend operations. 868 * td x 1 Bioq thread for logical buffer writes. 869 * 870 * In addition, the synchronization thread(s) associated with the 871 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 872 * and dedup scans. 873 */ 874 struct hammer2_thread { 875 struct hammer2_pfs *pmp; 876 struct hammer2_dev *hmp; 877 hammer2_xop_list_t xopq; 878 thread_t td; 879 uint32_t flags; 880 int depth; 881 int clindex; /* cluster element index */ 882 int repidx; 883 char *scratch; /* MAXPHYS */ 884 }; 885 886 typedef struct hammer2_thread hammer2_thread_t; 887 888 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 889 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 890 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 891 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 892 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 893 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 894 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 895 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 896 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 897 #define HAMMER2_THREAD_UNFREEZE 0x0200 898 899 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 900 HAMMER2_THREAD_REMASTER | \ 901 HAMMER2_THREAD_STOP | \ 902 HAMMER2_THREAD_FREEZE | \ 903 HAMMER2_THREAD_XOPQ) 904 905 /* 906 * Support structure for dedup heuristic. 907 */ 908 struct hammer2_dedup { 909 hammer2_off_t data_off; 910 uint64_t data_crc; 911 uint32_t ticks; 912 uint32_t unused03; 913 }; 914 915 typedef struct hammer2_dedup hammer2_dedup_t; 916 917 /* 918 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 919 * 920 * This structure is used to distribute a VOP operation across multiple 921 * nodes. It provides a rendezvous for concurrent node execution and 922 * can be detached from the frontend operation to allow the frontend to 923 * return early. 924 * 925 * This structure also sequences operations on up to three inodes. 926 */ 927 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 928 int clindex); 929 930 struct hammer2_xop_desc { 931 hammer2_xop_func_t storage_func; /* local storage function */ 932 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 933 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 934 const char *id; 935 }; 936 937 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 938 939 struct hammer2_xop_fifo { 940 TAILQ_ENTRY(hammer2_xop_head) entry; 941 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 942 int errors[HAMMER2_XOPFIFO]; 943 int ri; 944 int wi; 945 int flags; 946 hammer2_thread_t *thr; 947 }; 948 949 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 950 951 #define HAMMER2_XOP_FIFO_RUN 0x0001 952 #define HAMMER2_XOP_FIFO_STALL 0x0002 953 954 struct hammer2_xop_head { 955 hammer2_xop_desc_t *desc; 956 hammer2_tid_t mtid; 957 struct hammer2_inode *ip1; 958 struct hammer2_inode *ip2; 959 struct hammer2_inode *ip3; 960 uint64_t run_mask; 961 uint64_t chk_mask; 962 int flags; 963 int state; 964 int error; 965 hammer2_key_t collect_key; 966 char *name1; 967 size_t name1_len; 968 char *name2; 969 size_t name2_len; 970 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 971 hammer2_cluster_t cluster; /* help collections */ 972 hammer2_io_t *focus_dio; 973 }; 974 975 typedef struct hammer2_xop_head hammer2_xop_head_t; 976 977 struct hammer2_xop_ipcluster { 978 hammer2_xop_head_t head; 979 }; 980 981 struct hammer2_xop_strategy { 982 hammer2_xop_head_t head; 983 hammer2_key_t lbase; 984 int finished; 985 hammer2_mtx_t lock; 986 struct bio *bio; 987 }; 988 989 struct hammer2_xop_readdir { 990 hammer2_xop_head_t head; 991 hammer2_key_t lkey; 992 }; 993 994 struct hammer2_xop_nresolve { 995 hammer2_xop_head_t head; 996 hammer2_key_t lhc; /* if name is NULL used lhc */ 997 }; 998 999 struct hammer2_xop_unlink { 1000 hammer2_xop_head_t head; 1001 int isdir; 1002 int dopermanent; 1003 }; 1004 1005 #define H2DOPERM_PERMANENT 0x01 1006 #define H2DOPERM_FORCE 0x02 1007 #define H2DOPERM_IGNINO 0x04 1008 1009 struct hammer2_xop_nrename { 1010 hammer2_xop_head_t head; 1011 hammer2_tid_t lhc; 1012 int ip_key; 1013 }; 1014 1015 struct hammer2_xop_scanlhc { 1016 hammer2_xop_head_t head; 1017 hammer2_key_t lhc; 1018 }; 1019 1020 struct hammer2_xop_scanall { 1021 hammer2_xop_head_t head; 1022 hammer2_key_t key_beg; /* inclusive */ 1023 hammer2_key_t key_end; /* inclusive */ 1024 int resolve_flags; 1025 int lookup_flags; 1026 }; 1027 1028 struct hammer2_xop_lookup { 1029 hammer2_xop_head_t head; 1030 hammer2_key_t lhc; 1031 }; 1032 1033 struct hammer2_xop_mkdirent { 1034 hammer2_xop_head_t head; 1035 hammer2_dirent_head_t dirent; 1036 hammer2_key_t lhc; 1037 }; 1038 1039 struct hammer2_xop_create { 1040 hammer2_xop_head_t head; 1041 hammer2_inode_meta_t meta; /* initial metadata */ 1042 hammer2_key_t lhc; 1043 int flags; 1044 }; 1045 1046 struct hammer2_xop_destroy { 1047 hammer2_xop_head_t head; 1048 }; 1049 1050 struct hammer2_xop_fsync { 1051 hammer2_xop_head_t head; 1052 hammer2_inode_meta_t meta; 1053 hammer2_off_t osize; 1054 u_int ipflags; 1055 int clear_directdata; 1056 }; 1057 1058 struct hammer2_xop_unlinkall { 1059 hammer2_xop_head_t head; 1060 hammer2_key_t key_beg; 1061 hammer2_key_t key_end; 1062 }; 1063 1064 struct hammer2_xop_connect { 1065 hammer2_xop_head_t head; 1066 hammer2_key_t lhc; 1067 }; 1068 1069 struct hammer2_xop_flush { 1070 hammer2_xop_head_t head; 1071 }; 1072 1073 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1074 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1075 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1076 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1077 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1078 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1079 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1080 typedef struct hammer2_xop_create hammer2_xop_create_t; 1081 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1082 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1083 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1084 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1085 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1086 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1087 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1088 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1089 1090 union hammer2_xop { 1091 hammer2_xop_head_t head; 1092 hammer2_xop_ipcluster_t xop_ipcluster; 1093 hammer2_xop_readdir_t xop_readdir; 1094 hammer2_xop_nresolve_t xop_nresolve; 1095 hammer2_xop_unlink_t xop_unlink; 1096 hammer2_xop_nrename_t xop_nrename; 1097 hammer2_xop_strategy_t xop_strategy; 1098 hammer2_xop_mkdirent_t xop_mkdirent; 1099 hammer2_xop_create_t xop_create; 1100 hammer2_xop_destroy_t xop_destroy; 1101 hammer2_xop_fsync_t xop_fsync; 1102 hammer2_xop_unlinkall_t xop_unlinkall; 1103 hammer2_xop_scanlhc_t xop_scanlhc; 1104 hammer2_xop_scanall_t xop_scanall; 1105 hammer2_xop_lookup_t xop_lookup; 1106 hammer2_xop_flush_t xop_flush; 1107 hammer2_xop_connect_t xop_connect; 1108 }; 1109 1110 typedef union hammer2_xop hammer2_xop_t; 1111 1112 /* 1113 * hammer2_xop_group - Manage XOP support threads. 1114 */ 1115 struct hammer2_xop_group { 1116 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1117 }; 1118 1119 typedef struct hammer2_xop_group hammer2_xop_group_t; 1120 1121 /* 1122 * flags to hammer2_xop_collect() 1123 */ 1124 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1125 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1126 1127 /* 1128 * flags to hammer2_xop_alloc() 1129 * 1130 * MODIFYING - This is a modifying transaction, allocate a mtid. 1131 * RECURSE - Recurse top-level inode (for root flushes) 1132 */ 1133 #define HAMMER2_XOP_MODIFYING 0x00000001 1134 #define HAMMER2_XOP_STRATEGY 0x00000002 1135 #define HAMMER2_XOP_INODE_STOP 0x00000004 1136 #define HAMMER2_XOP_VOLHDR 0x00000008 1137 #define HAMMER2_XOP_FSSYNC 0x00000010 1138 #define HAMMER2_XOP_IROOT 0x00000020 1139 1140 /* 1141 * Global (per partition) management structure, represents a hard block 1142 * device. Typically referenced by hammer2_chain structures when applicable. 1143 * Typically not used for network-managed elements. 1144 * 1145 * Note that a single hammer2_dev can be indirectly tied to multiple system 1146 * mount points. There is no direct relationship. System mounts are 1147 * per-cluster-id, not per-block-device, and a single hard mount might contain 1148 * many PFSs and those PFSs might combine together in various ways to form 1149 * the set of available clusters. 1150 */ 1151 struct hammer2_dev { 1152 struct vnode *devvp; /* device vnode */ 1153 int ronly; /* read-only mount */ 1154 int mount_count; /* number of actively mounted PFSs */ 1155 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1156 1157 struct malloc_type *mchain; 1158 int nipstacks; 1159 int maxipstacks; 1160 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1161 struct spinlock io_spin; /* iotree, iolruq access */ 1162 struct hammer2_io_tree iotree; 1163 int iofree_count; 1164 int freemap_relaxed; 1165 hammer2_chain_t vchain; /* anchor chain (topology) */ 1166 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1167 struct spinlock list_spin; 1168 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1169 struct lock vollk; /* lockmgr lock */ 1170 struct lock bulklk; /* bulkfree operation lock */ 1171 struct lock bflock; /* bulk-free manual function lock */ 1172 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1173 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1174 int volhdrno; /* last volhdrno written */ 1175 uint32_t hflags; /* HMNT2 flags applicable to device */ 1176 hammer2_off_t free_reserved; /* nominal free reserved */ 1177 hammer2_thread_t bfthr; /* bulk-free thread */ 1178 char devrepname[64]; /* for kprintf */ 1179 hammer2_ioc_bulkfree_t bflast; /* stats for last bulkfree run */ 1180 hammer2_volume_data_t voldata; 1181 hammer2_volume_data_t volsync; /* synchronized voldata */ 1182 }; 1183 1184 typedef struct hammer2_dev hammer2_dev_t; 1185 1186 /* 1187 * Helper functions (cluster must be locked for flags to be valid). 1188 */ 1189 static __inline 1190 int 1191 hammer2_chain_rdok(hammer2_chain_t *chain) 1192 { 1193 return (chain->error == 0); 1194 } 1195 1196 static __inline 1197 int 1198 hammer2_chain_wrok(hammer2_chain_t *chain) 1199 { 1200 return (chain->error == 0 && chain->hmp->ronly == 0); 1201 } 1202 1203 /* 1204 * Per-cluster management structure. This structure will be tied to a 1205 * system mount point if the system is mounting the PFS, but is also used 1206 * to manage clusters encountered during the super-root scan or received 1207 * via LNK_SPANs that might not be mounted. 1208 * 1209 * This structure is also used to represent the super-root that hangs off 1210 * of a hard mount point. The super-root is not really a cluster element. 1211 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1212 * this than to special case super-root manipulation in the hammer2_chain* 1213 * code as being only hammer2_dev-related. 1214 * 1215 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1216 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1217 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1218 * how many masters have been configured for a cluster and is always 1219 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1220 * iroot cluster and describes the PFS types of the nodes making up the 1221 * cluster. 1222 * 1223 * WARNING! Portions of this structure have deferred initialization. In 1224 * particular, if not mounted there will be no wthread. 1225 * umounted network PFSs will also be missing iroot and numerous 1226 * other fields will not be initialized prior to mount. 1227 * 1228 * Synchronization threads are chain-specific and only applicable 1229 * to local hard PFS entries. A hammer2_pfs structure may contain 1230 * more than one when multiple hard PFSs are present on the local 1231 * machine which require synchronization monitoring. Most PFSs 1232 * (such as snapshots) are 1xMASTER PFSs which do not need a 1233 * synchronization thread. 1234 * 1235 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1236 * hammer2_dev->mount_count when the pfs is associated with a mount 1237 * point. 1238 */ 1239 struct hammer2_pfs { 1240 struct mount *mp; 1241 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1242 uuid_t pfs_clid; 1243 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1244 hammer2_dev_t *force_local; /* only if 'local' mount */ 1245 hammer2_inode_t *iroot; /* PFS root inode */ 1246 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1247 char *pfs_names[HAMMER2_MAXCLUSTER]; 1248 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1249 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1250 hammer2_trans_t trans; 1251 struct lock lock; /* PFS lock for certain ops */ 1252 struct lock lock_nlink; /* rename and nlink lock */ 1253 struct netexport export; /* nfs export */ 1254 int unused00; 1255 int ronly; /* read-only mount */ 1256 int hflags; /* pfs-specific mount flags */ 1257 struct malloc_type *minode; 1258 struct malloc_type *mmsg; 1259 struct spinlock inum_spin; /* inumber lookup */ 1260 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1261 long inum_count; /* #of inodes in inum_tree */ 1262 struct spinlock lru_spin; /* inumber lookup */ 1263 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1264 int lru_count; /* #of chains on LRU */ 1265 int flags; 1266 hammer2_tid_t modify_tid; /* modify transaction id */ 1267 hammer2_tid_t inode_tid; /* inode allocator */ 1268 uint8_t pfs_nmasters; /* total masters */ 1269 uint8_t pfs_mode; /* operating mode PFSMODE */ 1270 uint8_t unused01; 1271 uint8_t unused02; 1272 int free_ticks; /* free_* calculations */ 1273 long inmem_inodes; 1274 hammer2_off_t free_reserved; 1275 hammer2_off_t free_nominal; 1276 uint32_t inmem_dirty_chains; 1277 int count_lwinprog; /* logical write in prog */ 1278 struct spinlock list_spin; 1279 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1280 struct depq_head depq; /* SIDEQ flagged inodes */ 1281 long sideq_count; /* total inodes on depq */ 1282 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1283 uint32_t cluster_flags; /* cached cluster flags */ 1284 int has_xop_threads; 1285 struct spinlock xop_spin; /* xop sequencer */ 1286 hammer2_xop_group_t xop_groups[HAMMER2_XOPGROUPS]; 1287 }; 1288 1289 typedef struct hammer2_pfs hammer2_pfs_t; 1290 1291 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1292 1293 #define HAMMER2_PMPF_SPMP 0x00000001 1294 1295 /* 1296 * NOTE: The LRU list contains at least all the chains with refs == 0 1297 * that can be recycled, and may contain additional chains which 1298 * cannot. 1299 */ 1300 #define HAMMER2_LRU_LIMIT 4096 1301 1302 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1303 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1304 1305 #define HAMMER2_LWINPROG_WAITING 0x80000000 1306 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1307 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1308 1309 /* 1310 * hammer2_cluster_check 1311 */ 1312 #define HAMMER2_CHECK_NULL 0x00000001 1313 1314 /* 1315 * Misc 1316 */ 1317 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1318 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1319 #endif 1320 1321 #if defined(_KERNEL) 1322 1323 MALLOC_DECLARE(M_HAMMER2); 1324 1325 #define ITOV(ip) ((ip)->vp) 1326 1327 /* 1328 * Currently locked chains retain the locked buffer cache buffer for 1329 * indirect blocks, and indirect blocks can be one of two sizes. The 1330 * device buffer has to match the case to avoid deadlocking recursive 1331 * chains that might otherwise try to access different offsets within 1332 * the same device buffer. 1333 */ 1334 static __inline 1335 int 1336 hammer2_devblkradix(int radix) 1337 { 1338 #if 0 1339 if (radix <= HAMMER2_LBUFRADIX) { 1340 return (HAMMER2_LBUFRADIX); 1341 } else { 1342 return (HAMMER2_PBUFRADIX); 1343 } 1344 #endif 1345 return (HAMMER2_PBUFRADIX); 1346 } 1347 1348 /* 1349 * XXX almost time to remove this. DIO uses PBUFSIZE exclusively now. 1350 */ 1351 static __inline 1352 size_t 1353 hammer2_devblksize(size_t bytes) 1354 { 1355 #if 0 1356 if (bytes <= HAMMER2_LBUFSIZE) { 1357 return(HAMMER2_LBUFSIZE); 1358 } else { 1359 KKASSERT(bytes <= HAMMER2_PBUFSIZE && 1360 (bytes ^ (bytes - 1)) == ((bytes << 1) - 1)); 1361 return (HAMMER2_PBUFSIZE); 1362 } 1363 #endif 1364 return (HAMMER2_PBUFSIZE); 1365 } 1366 1367 1368 static __inline 1369 hammer2_pfs_t * 1370 MPTOPMP(struct mount *mp) 1371 { 1372 return ((hammer2_pfs_t *)mp->mnt_data); 1373 } 1374 1375 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1376 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1377 1378 static __inline 1379 uint64_t 1380 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1381 { 1382 int bbeg; 1383 int bits; 1384 uint64_t mask; 1385 1386 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1387 HAMMER2_DEDUP_FRAGRADIX; 1388 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1389 HAMMER2_DEDUP_FRAGRADIX); 1390 mask = ((uint64_t)1 << bbeg) - 1; 1391 if (bbeg + bits == 64) 1392 mask = (uint64_t)-1; 1393 else 1394 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1395 1396 mask &= ~(((uint64_t)1 << bbeg) - 1); 1397 1398 return mask; 1399 } 1400 1401 static __inline 1402 int 1403 hammer2_error_to_errno(int error) 1404 { 1405 if (error) { 1406 if (error & HAMMER2_ERROR_EIO) 1407 error = EIO; 1408 else if (error & HAMMER2_ERROR_CHECK) 1409 error = EDOM; 1410 else if (error & HAMMER2_ERROR_ABORTED) 1411 error = EINTR; 1412 else if (error & HAMMER2_ERROR_BADBREF) 1413 error = EIO; 1414 else if (error & HAMMER2_ERROR_ENOSPC) 1415 error = ENOSPC; 1416 else if (error & HAMMER2_ERROR_ENOENT) 1417 error = ENOENT; 1418 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1419 error = ENOTEMPTY; 1420 else if (error & HAMMER2_ERROR_EAGAIN) 1421 error = EAGAIN; 1422 else if (error & HAMMER2_ERROR_ENOTDIR) 1423 error = ENOTDIR; 1424 else if (error & HAMMER2_ERROR_EISDIR) 1425 error = EISDIR; 1426 else if (error & HAMMER2_ERROR_EINPROGRESS) 1427 error = EINPROGRESS; 1428 else if (error & HAMMER2_ERROR_EEXIST) 1429 error = EEXIST; 1430 else 1431 error = EDOM; 1432 } 1433 return error; 1434 } 1435 1436 static __inline 1437 int 1438 hammer2_errno_to_error(int error) 1439 { 1440 switch(error) { 1441 case 0: 1442 return 0; 1443 case EIO: 1444 return HAMMER2_ERROR_EIO; 1445 case EINVAL: 1446 default: 1447 return HAMMER2_ERROR_EINVAL; 1448 } 1449 } 1450 1451 1452 extern struct vop_ops hammer2_vnode_vops; 1453 extern struct vop_ops hammer2_spec_vops; 1454 extern struct vop_ops hammer2_fifo_vops; 1455 extern struct hammer2_pfslist hammer2_pfslist; 1456 extern struct lock hammer2_mntlk; 1457 1458 1459 extern int hammer2_debug; 1460 extern long hammer2_debug_inode; 1461 extern int hammer2_cluster_meta_read; 1462 extern int hammer2_cluster_data_read; 1463 extern int hammer2_cluster_write; 1464 extern int hammer2_dedup_enable; 1465 extern int hammer2_always_compress; 1466 extern int hammer2_inval_enable; 1467 extern int hammer2_flush_pipe; 1468 extern int hammer2_dio_count; 1469 extern int hammer2_dio_limit; 1470 extern int hammer2_bulkfree_tps; 1471 extern int hammer2_worker_rmask; 1472 extern long hammer2_chain_allocs; 1473 extern long hammer2_chain_frees; 1474 extern long hammer2_limit_dirty_chains; 1475 extern long hammer2_limit_dirty_inodes; 1476 extern long hammer2_count_modified_chains; 1477 extern long hammer2_iod_invals; 1478 extern long hammer2_iod_file_read; 1479 extern long hammer2_iod_meta_read; 1480 extern long hammer2_iod_indr_read; 1481 extern long hammer2_iod_fmap_read; 1482 extern long hammer2_iod_volu_read; 1483 extern long hammer2_iod_file_write; 1484 extern long hammer2_iod_file_wembed; 1485 extern long hammer2_iod_file_wzero; 1486 extern long hammer2_iod_file_wdedup; 1487 extern long hammer2_iod_meta_write; 1488 extern long hammer2_iod_indr_write; 1489 extern long hammer2_iod_fmap_write; 1490 extern long hammer2_iod_volu_write; 1491 1492 extern long hammer2_process_xxhash64; 1493 extern long hammer2_process_icrc32; 1494 1495 extern struct objcache *cache_buffer_read; 1496 extern struct objcache *cache_buffer_write; 1497 extern struct objcache *cache_xops; 1498 1499 /* 1500 * hammer2_subr.c 1501 */ 1502 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1503 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1504 1505 int hammer2_signal_check(time_t *timep); 1506 const char *hammer2_error_str(int error); 1507 const char *hammer2_bref_type_str(hammer2_blockref_t *bref); 1508 1509 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1510 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1511 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1512 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1513 void hammer2_inode_unlock(hammer2_inode_t *ip); 1514 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1515 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1516 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1517 int clindex, hammer2_chain_t **parentp, int how); 1518 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1519 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1520 hammer2_mtx_state_t ostate); 1521 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1522 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1523 1524 void hammer2_dev_exlock(hammer2_dev_t *hmp); 1525 void hammer2_dev_shlock(hammer2_dev_t *hmp); 1526 void hammer2_dev_unlock(hammer2_dev_t *hmp); 1527 1528 int hammer2_get_dtype(uint8_t type); 1529 int hammer2_get_vtype(uint8_t type); 1530 uint8_t hammer2_get_obj_type(enum vtype vtype); 1531 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1532 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1533 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1534 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1535 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1536 1537 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1538 int hammer2_getradix(size_t bytes); 1539 1540 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1541 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1542 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1543 void hammer2_update_time(uint64_t *timep); 1544 void hammer2_adjreadcounter(hammer2_blockref_t *bref, size_t bytes); 1545 1546 /* 1547 * hammer2_inode.c 1548 */ 1549 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1550 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1551 hammer2_tid_t inum); 1552 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1553 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1554 void hammer2_inode_free(hammer2_inode_t *ip); 1555 void hammer2_inode_ref(hammer2_inode_t *ip); 1556 void hammer2_inode_drop(hammer2_inode_t *ip); 1557 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_inode_t *pip, 1558 hammer2_cluster_t *cluster); 1559 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1560 int idx); 1561 void hammer2_inode_modify(hammer2_inode_t *ip); 1562 void hammer2_inode_run_sideq(hammer2_pfs_t *pmp, int doall); 1563 1564 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1565 struct vattr *vap, struct ucred *cred, 1566 hammer2_key_t inum, int *errorp); 1567 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1568 const uint8_t *name, size_t name_len, 1569 int *errorp); 1570 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1571 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1572 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1573 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1574 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1575 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1576 size_t name_len, hammer2_key_t inum, uint8_t type); 1577 1578 /* 1579 * hammer2_chain.c 1580 */ 1581 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1582 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1583 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1584 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1585 hammer2_pfs_t *pmp, 1586 hammer2_blockref_t *bref); 1587 void hammer2_chain_core_init(hammer2_chain_t *chain); 1588 void hammer2_chain_ref(hammer2_chain_t *chain); 1589 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1590 void hammer2_chain_drop(hammer2_chain_t *chain); 1591 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1592 void hammer2_chain_unhold(hammer2_chain_t *chain); 1593 void hammer2_chain_rehold(hammer2_chain_t *chain); 1594 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1595 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1596 void hammer2_chain_load_data(hammer2_chain_t *chain); 1597 const hammer2_media_data_t *hammer2_chain_rdata(hammer2_chain_t *chain); 1598 hammer2_media_data_t *hammer2_chain_wdata(hammer2_chain_t *chain); 1599 1600 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1601 int clindex, int flags, 1602 hammer2_chain_t **parentp, 1603 hammer2_chain_t **chainp); 1604 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1605 hammer2_off_t dedup_off, int flags); 1606 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1607 hammer2_tid_t mtid, int flags); 1608 int hammer2_chain_resize(hammer2_chain_t *chain, 1609 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1610 int nradix, int flags); 1611 void hammer2_chain_unlock(hammer2_chain_t *chain); 1612 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1613 void hammer2_chain_wait(hammer2_chain_t *chain); 1614 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1615 hammer2_blockref_t *bref, int how); 1616 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1617 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1618 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1619 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1620 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1621 hammer2_key_t *key_nextp, 1622 hammer2_key_t key_beg, hammer2_key_t key_end, 1623 int *errorp, int flags); 1624 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1625 hammer2_chain_t *chain, 1626 hammer2_key_t *key_nextp, 1627 hammer2_key_t key_beg, hammer2_key_t key_end, 1628 int *errorp, int flags); 1629 int hammer2_chain_scan(hammer2_chain_t *parent, 1630 hammer2_chain_t **chainp, 1631 hammer2_blockref_t *bref, 1632 int *firstp, int flags); 1633 1634 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1635 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1636 int methods, hammer2_key_t key, int keybits, 1637 int type, size_t bytes, hammer2_tid_t mtid, 1638 hammer2_off_t dedup_off, int flags); 1639 void hammer2_chain_rename(hammer2_chain_t **parentp, 1640 hammer2_chain_t *chain, 1641 hammer2_tid_t mtid, int flags); 1642 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1643 hammer2_tid_t mtid, int flags); 1644 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1645 hammer2_chain_t *chain); 1646 void hammer2_chain_setflush(hammer2_chain_t *chain); 1647 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1648 hammer2_blockref_t *base, int count); 1649 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1650 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1651 1652 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1653 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1654 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1655 size_t name_len); 1656 1657 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1658 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1659 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp); 1660 1661 void hammer2_base_delete(hammer2_chain_t *parent, 1662 hammer2_blockref_t *base, int count, 1663 hammer2_chain_t *chain, 1664 hammer2_blockref_t *obref); 1665 void hammer2_base_insert(hammer2_chain_t *parent, 1666 hammer2_blockref_t *base, int count, 1667 hammer2_chain_t *chain, 1668 hammer2_blockref_t *elm); 1669 1670 /* 1671 * hammer2_flush.c 1672 */ 1673 int hammer2_flush(hammer2_chain_t *chain, int istop); 1674 void hammer2_delayed_flush(hammer2_chain_t *chain); 1675 1676 /* 1677 * hammer2_trans.c 1678 */ 1679 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1680 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1681 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1682 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1683 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1684 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1685 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1686 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1687 const char *data); 1688 1689 /* 1690 * hammer2_ioctl.c 1691 */ 1692 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1693 int fflag, struct ucred *cred); 1694 1695 /* 1696 * hammer2_io.c 1697 */ 1698 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1699 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1700 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1701 void hammer2_io_bkvasync(hammer2_io_t *dio); 1702 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1703 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1704 hammer2_off_t data_off, u_int bytes); 1705 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1706 u_int bytes); 1707 void hammer2_io_callback(struct bio *bio); 1708 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1709 hammer2_io_t **diop); 1710 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1711 hammer2_io_t **diop); 1712 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1713 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1714 void hammer2_io_setdirty(hammer2_io_t *dio); 1715 1716 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1717 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1718 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1719 int lsize HAMMER2_IO_DEBUG_ARGS); 1720 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1721 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1722 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1723 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1724 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1725 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1726 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1727 1728 #ifndef HAMMER2_IO_DEBUG 1729 1730 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1731 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1732 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1733 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1734 #define hammer2_io_putblk(diop) \ 1735 _hammer2_io_putblk(diop) 1736 #define hammer2_io_bwrite(diop) \ 1737 _hammer2_io_bwrite((diop)) 1738 #define hammer2_io_bawrite(diop) \ 1739 _hammer2_io_bawrite((diop)) 1740 #define hammer2_io_bdwrite(diop) \ 1741 _hammer2_io_bdwrite((diop)) 1742 #define hammer2_io_brelse(diop) \ 1743 _hammer2_io_brelse((diop)) 1744 #define hammer2_io_bqrelse(diop) \ 1745 _hammer2_io_bqrelse((diop)) 1746 #define hammer2_io_ref(dio) \ 1747 _hammer2_io_ref((dio)) 1748 1749 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1750 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1751 1752 #else 1753 1754 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1755 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1756 __FILE__, __LINE__) 1757 1758 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1759 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1760 1761 #define hammer2_io_putblk(diop) \ 1762 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1763 1764 #define hammer2_io_bwrite(diop) \ 1765 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1766 #define hammer2_io_bawrite(diop) \ 1767 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1768 #define hammer2_io_bdwrite(diop) \ 1769 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1770 #define hammer2_io_brelse(diop) \ 1771 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1772 #define hammer2_io_bqrelse(diop) \ 1773 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1774 #define hammer2_io_ref(dio) \ 1775 _hammer2_io_ref((dio), __FILE__, __LINE__) 1776 1777 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1778 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1779 __FILE__, __LINE__) 1780 1781 #endif 1782 1783 /* 1784 * hammer2_thread.c 1785 */ 1786 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1787 void hammer2_thr_signal2(hammer2_thread_t *thr, 1788 uint32_t pflags, uint32_t nflags); 1789 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1790 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1791 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1792 void hammer2_thr_create(hammer2_thread_t *thr, 1793 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1794 const char *id, int clindex, int repidx, 1795 void (*func)(void *arg)); 1796 void hammer2_thr_delete(hammer2_thread_t *thr); 1797 void hammer2_thr_remaster(hammer2_thread_t *thr); 1798 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1799 void hammer2_thr_freeze(hammer2_thread_t *thr); 1800 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1801 int hammer2_thr_break(hammer2_thread_t *thr); 1802 void hammer2_primary_xops_thread(void *arg); 1803 1804 /* 1805 * hammer2_thread.c (XOP API) 1806 */ 1807 void hammer2_xop_group_init(hammer2_pfs_t *pmp, hammer2_xop_group_t *xgrp); 1808 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1809 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1810 const char *name, size_t name_len); 1811 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1812 const char *name, size_t name_len); 1813 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1814 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1815 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1816 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1817 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1818 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1819 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1820 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1821 int notidx); 1822 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1823 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1824 int hammer2_xop_active(hammer2_xop_head_t *xop); 1825 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1826 int clindex, int error); 1827 1828 /* 1829 * hammer2_synchro.c 1830 */ 1831 void hammer2_primary_sync_thread(void *arg); 1832 1833 /* 1834 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1835 * may be integrated into other source files. 1836 */ 1837 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1844 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1845 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1847 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1848 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1849 void *scratch, int clindex); 1850 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1851 void *scratch, int clindex); 1852 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1853 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1854 int clindex); 1855 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1856 int clindex); 1857 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1858 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1859 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1860 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1861 1862 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1863 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1864 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1865 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1866 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1867 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1868 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1869 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1870 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1871 int clindex); 1872 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1873 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1874 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1875 int clindex); 1876 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1877 int clindex); 1878 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1879 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1880 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1881 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1882 int clindex); 1883 1884 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1885 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1886 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1887 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1888 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1889 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1890 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1891 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1892 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1893 int clindex); 1894 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1895 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1896 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1897 int clindex); 1898 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1899 int clindex); 1900 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1901 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1902 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1903 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1904 int clindex); 1905 1906 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1907 extern hammer2_xop_desc_t hammer2_readdir_desc; 1908 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1909 extern hammer2_xop_desc_t hammer2_unlink_desc; 1910 extern hammer2_xop_desc_t hammer2_nrename_desc; 1911 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1912 extern hammer2_xop_desc_t hammer2_scanall_desc; 1913 extern hammer2_xop_desc_t hammer2_lookup_desc; 1914 extern hammer2_xop_desc_t hammer2_delete_desc; 1915 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1916 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1917 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1918 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1919 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1920 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1921 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1922 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1923 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1924 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1925 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1926 1927 /* 1928 * hammer2_msgops.c 1929 */ 1930 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1931 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1932 1933 /* 1934 * hammer2_vfsops.c 1935 */ 1936 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1937 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int *countp, char pfx, 1938 u_int flags); 1939 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1940 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1941 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1942 1943 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1944 const hammer2_inode_data_t *ripdata, 1945 hammer2_tid_t modify_tid, 1946 hammer2_dev_t *force_local); 1947 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1948 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1949 ino_t ino, struct vnode **vpp); 1950 1951 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1952 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1953 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1954 1955 /* 1956 * hammer2_freemap.c 1957 */ 1958 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1959 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1960 hammer2_blockref_t *bref, int how); 1961 1962 /* 1963 * hammer2_cluster.c 1964 */ 1965 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1966 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1967 hammer2_cluster_t *hammer2_cluster_alloc(hammer2_pfs_t *pmp, 1968 hammer2_blockref_t *bref); 1969 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1970 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1971 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1972 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1973 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1974 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1975 int flags); 1976 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1977 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1978 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1979 1980 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1981 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1982 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1983 struct hammer2_ioc_bulkfree *bfi); 1984 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1985 hammer2_chain_t *chain); 1986 1987 /* 1988 * hammer2_iocom.c 1989 */ 1990 void hammer2_iocom_init(hammer2_dev_t *hmp); 1991 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1992 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1993 1994 /* 1995 * hammer2_strategy.c 1996 */ 1997 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1998 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1999 void hammer2_write_thread(void *arg); 2000 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 2001 void hammer2_dedup_clear(hammer2_dev_t *hmp); 2002 2003 /* 2004 * More complex inlines 2005 */ 2006 2007 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 2008 2009 static __inline 2010 const hammer2_media_data_t * 2011 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 2012 { 2013 hammer2_chain_t *focus; 2014 const void *data; 2015 2016 focus = xop->cluster.focus; 2017 if (focus->dio) { 2018 lockmgr(&focus->diolk, LK_SHARED); 2019 if ((xop->focus_dio = focus->dio) != NULL) { 2020 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2021 hammer2_io_bkvasync(xop->focus_dio); 2022 } 2023 data = focus->data; 2024 lockmgr(&focus->diolk, LK_RELEASE); 2025 } else { 2026 data = focus->data; 2027 } 2028 2029 return data; 2030 } 2031 2032 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2033 2034 static __inline 2035 void 2036 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2037 { 2038 if (xop->focus_dio) 2039 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2040 } 2041 2042 #endif /* !_KERNEL */ 2043 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2044