1 /* 2 * Copyright (c) 2011-2017 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/thread2.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_dev; 113 struct hammer2_pfs; 114 struct hammer2_span; 115 struct hammer2_state; 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_sh mtx_lock_sh_quick 133 #define hammer2_mtx_sh_again mtx_lock_sh_again 134 #define hammer2_mtx_unlock mtx_unlock 135 #define hammer2_mtx_downgrade mtx_downgrade 136 #define hammer2_mtx_owned mtx_owned 137 #define hammer2_mtx_init mtx_init 138 #define hammer2_mtx_temp_release mtx_lock_temp_release 139 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 140 #define hammer2_mtx_refs mtx_lockrefs 141 142 #define hammer2_spin_init spin_init 143 #define hammer2_spin_sh spin_lock_shared 144 #define hammer2_spin_ex spin_lock 145 #define hammer2_spin_unsh spin_unlock_shared 146 #define hammer2_spin_unex spin_unlock 147 148 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 149 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 150 151 typedef struct hammer2_xop_list hammer2_xop_list_t; 152 153 #ifdef _KERNEL 154 /* 155 * General lock support 156 */ 157 static __inline 158 int 159 hammer2_mtx_upgrade_try(hammer2_mtx_t *mtx) 160 { 161 return mtx_upgrade_try(mtx); 162 } 163 164 #endif 165 166 /* 167 * The xid tracks internal transactional updates. 168 * 169 * XXX fix-me, really needs to be 64-bits 170 */ 171 typedef uint32_t hammer2_xid_t; 172 173 #define HAMMER2_XID_MIN 0x00000000U 174 #define HAMMER2_XID_MAX 0x7FFFFFFFU 175 176 #define HAMMER2_LIMIT_DIRTY_CHAINS (65536) 177 178 /* 179 * The chain structure tracks a portion of the media topology from the 180 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 181 * data blocks, and freemap nodes and leafs. 182 * 183 * The chain structure utilizes a simple singly-homed topology and the 184 * chain's in-memory topology will move around as the chains do, due mainly 185 * to renames and indirect block creation. 186 * 187 * Block Table Updates 188 * 189 * Block table updates for insertions and updates are delayed until the 190 * flush. This allows us to avoid having to modify the parent chain 191 * all the way to the root. 192 * 193 * Block table deletions are performed immediately (modifying the parent 194 * in the process) because the flush code uses the chain structure to 195 * track delayed updates and the chain will be (likely) gone or moved to 196 * another location in the topology after a deletion. 197 * 198 * A prior iteration of the code tried to keep the relationship intact 199 * on deletes by doing a delete-duplicate operation on the chain, but 200 * it added way too much complexity to the codebase. 201 * 202 * Flush Synchronization 203 * 204 * The flush code must flush modified chains bottom-up. Because chain 205 * structures can shift around and are NOT topologically stable, 206 * modified chains are independently indexed for the flush. As the flush 207 * runs it modifies (or further modifies) and updates the parents, 208 * propagating the flush all the way to the volume root. 209 * 210 * Modifying front-end operations can occur during a flush but will block 211 * in two cases: (1) when the front-end tries to operate on the inode 212 * currently in the midst of being flushed and (2) if the front-end 213 * crosses an inode currently being flushed (such as during a rename). 214 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 215 * the flusher is currently working on "a/b/c", the rename will block 216 * temporarily in order to ensure that "x" exists in one place or the 217 * other. 218 * 219 * Meta-data statistics are updated by the flusher. The front-end will 220 * make estimates but meta-data must be fully synchronized only during a 221 * flush in order to ensure that it remains correct across a crash. 222 * 223 * Multiple flush synchronizations can theoretically be in-flight at the 224 * same time but the implementation is not coded to handle the case and 225 * currently serializes them. 226 * 227 * Snapshots: 228 * 229 * Snapshots currently require the subdirectory tree being snapshotted 230 * to be flushed. The snapshot then creates a new super-root inode which 231 * copies the flushed blockdata of the directory or file that was 232 * snapshotted. 233 * 234 * RBTREE NOTES: 235 * 236 * - Note that the radix tree runs in powers of 2 only so sub-trees 237 * cannot straddle edges. 238 */ 239 RB_HEAD(hammer2_chain_tree, hammer2_chain); 240 TAILQ_HEAD(h2_flush_list, hammer2_chain); 241 TAILQ_HEAD(h2_core_list, hammer2_chain); 242 243 #define CHAIN_CORE_DELETE_BMAP_ENTRIES \ 244 (HAMMER2_PBUFSIZE / sizeof(hammer2_blockref_t) / sizeof(uint32_t)) 245 246 /* 247 * Core topology for chain (embedded in chain). Protected by a spinlock. 248 */ 249 struct hammer2_chain_core { 250 hammer2_spin_t spin; 251 struct hammer2_chain_tree rbtree; /* sub-chains */ 252 int live_zero; /* blockref array opt */ 253 u_int live_count; /* live (not deleted) chains in tree */ 254 u_int chain_count; /* live + deleted chains under core */ 255 int generation; /* generation number (inserts only) */ 256 }; 257 258 typedef struct hammer2_chain_core hammer2_chain_core_t; 259 260 RB_HEAD(hammer2_io_tree, hammer2_io); 261 262 /* 263 * DIO - Management structure wrapping system buffer cache. 264 * 265 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 266 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 267 * structures. 268 */ 269 struct hammer2_io { 270 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 271 struct hammer2_dev *hmp; 272 struct buf *bp; 273 off_t pbase; 274 uint64_t refs; 275 int psize; 276 int act; /* activity */ 277 int btype; /* approximate BREF_TYPE_* */ 278 int ticks; 279 int error; 280 int unused01; 281 uint64_t dedup_valid; /* valid for dedup operation */ 282 uint64_t dedup_alloc; /* allocated / de-dupable */ 283 }; 284 285 typedef struct hammer2_io hammer2_io_t; 286 287 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 288 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 289 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 290 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 291 292 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 293 294 /* 295 * Primary chain structure keeps track of the topology in-memory. 296 */ 297 struct hammer2_chain { 298 hammer2_mtx_t lock; 299 hammer2_chain_core_t core; 300 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 301 hammer2_blockref_t bref; 302 struct hammer2_chain *parent; 303 struct hammer2_state *state; /* if active cache msg */ 304 struct hammer2_dev *hmp; 305 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 306 307 hammer2_io_t *dio; /* physical data buffer */ 308 u_int bytes; /* physical data size */ 309 u_int flags; 310 u_int refs; 311 u_int lockcnt; 312 int error; /* on-lock data error state */ 313 int cache_index; /* heur speeds up lookup */ 314 315 hammer2_media_data_t *data; /* data pointer shortcut */ 316 TAILQ_ENTRY(hammer2_chain) flush_node; /* flush list */ 317 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 318 }; 319 320 typedef struct hammer2_chain hammer2_chain_t; 321 322 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 323 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 324 325 /* 326 * Special notes on flags: 327 * 328 * INITIAL - This flag allows a chain to be created and for storage to 329 * be allocated without having to immediately instantiate the 330 * related buffer. The data is assumed to be all-zeros. It 331 * is primarily used for indirect blocks. 332 * 333 * MODIFIED - The chain's media data has been modified. Prevents chain 334 * free on lastdrop if still in the topology. 335 * 336 * UPDATE - Chain might not be modified but parent blocktable needs 337 * an update. Prevents chain free on lastdrop if still in 338 * the topology. 339 * 340 * FICTITIOUS - Faked chain as a placeholder for an error condition. This 341 * chain is unsuitable for I/O. 342 * 343 * BMAPPED - Indicates that the chain is present in the parent blockmap. 344 * 345 * BMAPUPD - Indicates that the chain is present but needs to be updated 346 * in the parent blockmap. 347 */ 348 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 349 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 350 #define HAMMER2_CHAIN_DESTROY 0x00000004 351 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 352 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 353 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 354 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 355 #define HAMMER2_CHAIN_DEFERRED 0x00000080 /* flush depth defer */ 356 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 357 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 358 #define HAMMER2_CHAIN_FICTITIOUS 0x00000400 /* unsuitable for I/O */ 359 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 360 #define HAMMER2_CHAIN_DELAYED 0x00001000 /* delayed flush */ 361 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 362 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 363 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 364 #define HAMMER2_CHAIN_EMBEDDED 0x00010000 /* embedded data */ 365 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 366 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */ 367 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */ 368 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 369 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 370 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 371 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 372 373 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 374 HAMMER2_CHAIN_UPDATE | \ 375 HAMMER2_CHAIN_ONFLUSH | \ 376 HAMMER2_CHAIN_DESTROY) 377 378 /* 379 * Hammer2 error codes, used by chain->error and cluster->error. The error 380 * code is typically set on-lock unless no I/O was requested, and set on 381 * I/O otherwise. If set for a cluster it generally means that the cluster 382 * code could not find a valid copy to present. 383 * 384 * All H2 error codes are flags and can be accumulated by ORing them 385 * together. 386 * 387 * IO - An I/O error occurred 388 * CHECK - I/O succeeded but did not match the check code 389 * INCOMPLETE - A cluster is not complete enough to use, or 390 * a chain cannot be loaded because its parent has an error. 391 * 392 * NOTE: API allows callers to check zero/non-zero to determine if an error 393 * condition exists. 394 * 395 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 396 * NULL on other errors. Check chain->error, not chain->data. 397 */ 398 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 399 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 400 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 401 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 402 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 403 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 404 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 405 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 406 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 407 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 408 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 409 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 410 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 411 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 412 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 413 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 414 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 415 #define HAMMER2_ERROR_EDEADLK 0x00010000 416 #define HAMMER2_ERROR_ESRCH 0x00020000 417 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 418 419 /* 420 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 421 * 422 * NOTES: 423 * NOLOCK - Input and output chains are referenced only and not 424 * locked. Output chain might be temporarily locked 425 * internally. 426 * 427 * NODATA - Asks that the chain->data not be resolved in order 428 * to avoid I/O. 429 * 430 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 431 * the inode itself if the inode is in DIRECTDATA mode 432 * (i.e. file is <= 512 bytes). Used by the synchronization 433 * code to prevent confusion. 434 * 435 * SHARED - The input chain is expected to be locked shared, 436 * and the output chain is locked shared. 437 * 438 * MATCHIND - Allows an indirect block / freemap node to be returned 439 * when the passed key range matches the radix. Remember 440 * that key_end is inclusive (e.g. {0x000,0xFFF}, 441 * not {0x000,0x1000}). 442 * 443 * (Cannot be used for remote or cluster ops). 444 * 445 * ALLNODES - Allows NULL focus. 446 * 447 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 448 * missing, bulk file data is not resolved but inodes and 449 * other meta-data will. 450 * 451 * NOUNLOCK - Used by hammer2_chain_next() to leave the lock on 452 * the input chain intact. The chain is still dropped. 453 * This allows the caller to add a reference to the chain 454 * and retain it in a locked state (used by the 455 * XOP/feed/collect code). 456 */ 457 #define HAMMER2_LOOKUP_NOLOCK 0x00000001 /* ref only */ 458 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 459 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 460 #define HAMMER2_LOOKUP_SHARED 0x00000100 461 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 462 #define HAMMER2_LOOKUP_ALLNODES 0x00000400 /* allow NULL focus */ 463 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 464 #define HAMMER2_LOOKUP_NOUNLOCK 0x00001000 /* leave lock intact */ 465 466 /* 467 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 468 * 469 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 470 * blocks in the INITIAL-create state. 471 */ 472 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 473 #define HAMMER2_MODIFY_NO_MODIFY_TID 0x00000004 474 #define HAMMER2_MODIFY_UNUSED0008 0x00000008 475 476 /* 477 * Flags passed to hammer2_chain_lock() 478 * 479 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 480 * will be made to either the cluster being locked or any underlying 481 * cluster. It allows the cluster to lock and access data for a subset 482 * of available nodes instead of all available nodes. 483 */ 484 #define HAMMER2_RESOLVE_NEVER 1 485 #define HAMMER2_RESOLVE_MAYBE 2 486 #define HAMMER2_RESOLVE_ALWAYS 3 487 #define HAMMER2_RESOLVE_MASK 0x0F 488 489 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 490 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 491 #define HAMMER2_RESOLVE_RDONLY 0x40 /* higher level op flag */ 492 493 /* 494 * Flags passed to hammer2_chain_delete() 495 */ 496 #define HAMMER2_DELETE_PERMANENT 0x0001 497 498 /* 499 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 500 * or hammer2_chain_create(). 501 */ 502 #define HAMMER2_INSERT_PFSROOT 0x0004 503 #define HAMMER2_INSERT_SAMEPARENT 0x0008 504 505 /* 506 * Flags passed to hammer2_chain_delete_duplicate() 507 */ 508 #define HAMMER2_DELDUP_RECORE 0x0001 509 510 /* 511 * Cluster different types of storage together for allocations 512 */ 513 #define HAMMER2_FREECACHE_INODE 0 514 #define HAMMER2_FREECACHE_INDIR 1 515 #define HAMMER2_FREECACHE_DATA 2 516 #define HAMMER2_FREECACHE_UNUSED3 3 517 #define HAMMER2_FREECACHE_TYPES 4 518 519 /* 520 * hammer2_freemap_alloc() block preference 521 */ 522 #define HAMMER2_OFF_NOPREF ((hammer2_off_t)-1) 523 524 /* 525 * BMAP read-ahead maximum parameters 526 */ 527 #define HAMMER2_BMAP_COUNT 16 /* max bmap read-ahead */ 528 #define HAMMER2_BMAP_BYTES (HAMMER2_PBUFSIZE * HAMMER2_BMAP_COUNT) 529 530 /* 531 * hammer2_freemap_adjust() 532 */ 533 #define HAMMER2_FREEMAP_DORECOVER 1 534 #define HAMMER2_FREEMAP_DOMAYFREE 2 535 #define HAMMER2_FREEMAP_DOREALFREE 3 536 537 /* 538 * HAMMER2 cluster - A set of chains representing the same entity. 539 * 540 * hammer2_cluster typically represents a temporary set of representitive 541 * chains. The one exception is that a hammer2_cluster is embedded in 542 * hammer2_inode. This embedded cluster is ONLY used to track the 543 * representitive chains and cannot be directly locked. 544 * 545 * A cluster is usually temporary (and thus per-thread) for locking purposes, 546 * allowing us to embed the asynchronous storage required for cluster 547 * operations in the cluster itself and adjust the state and status without 548 * having to worry too much about SMP issues. 549 * 550 * The exception is the cluster embedded in the hammer2_inode structure. 551 * This is used to cache the cluster state on an inode-by-inode basis. 552 * Individual hammer2_chain structures not incorporated into clusters might 553 * also stick around to cache miscellanious elements. 554 * 555 * Because the cluster is a 'working copy' and is usually subject to cluster 556 * quorum rules, it is quite possible for us to end up with an insufficient 557 * number of live chains to execute an operation. If an insufficient number 558 * of chains remain in a working copy, the operation may have to be 559 * downgraded, retried, stall until the requisit number of chains are 560 * available, or possibly even error out depending on the mount type. 561 * 562 * A cluster's focus is set when it is locked. The focus can only be set 563 * to a chain still part of the synchronized set. 564 */ 565 #define HAMMER2_XOPFIFO 16 566 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 567 #define HAMMER2_XOPGROUPS 32 568 #define HAMMER2_XOPGROUPS_MASK (HAMMER2_XOPGROUPS - 1) 569 570 #define HAMMER2_MAXCLUSTER 8 571 #define HAMMER2_XOPMASK_CLUSTER (uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1) 572 #define HAMMER2_XOPMASK_VOP (uint64_t)0x0000000080000000LLU 573 #define HAMMER2_XOPMASK_FIFOW (uint64_t)0x0000000040000000LLU 574 #define HAMMER2_XOPMASK_WAIT (uint64_t)0x0000000020000000LLU 575 #define HAMMER2_XOPMASK_FEED (uint64_t)0x0000000100000000LLU 576 577 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 578 579 #define HAMMER2_SPECTHREADS 1 /* sync */ 580 581 struct hammer2_cluster_item { 582 hammer2_chain_t *chain; 583 int error; 584 uint32_t flags; 585 }; 586 587 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 588 589 /* 590 * INVALID - Invalid for focus, i.e. not part of synchronized set. 591 * Once set, this bit is sticky across operations. 592 * 593 * FEMOD - Indicates that front-end modifying operations can 594 * mess with this entry and MODSYNC will copy also 595 * effect it. 596 */ 597 #define HAMMER2_CITEM_INVALID 0x00000001 598 #define HAMMER2_CITEM_FEMOD 0x00000002 599 #define HAMMER2_CITEM_NULL 0x00000004 600 601 struct hammer2_cluster { 602 int refs; /* track for deallocation */ 603 int ddflag; 604 struct hammer2_pfs *pmp; 605 uint32_t flags; 606 int nchains; 607 int error; /* error code valid on lock */ 608 int focus_index; 609 hammer2_chain_t *focus; /* current focus (or mod) */ 610 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 611 }; 612 613 typedef struct hammer2_cluster hammer2_cluster_t; 614 615 /* 616 * WRHARD - Hard mounts can write fully synchronized 617 * RDHARD - Hard mounts can read fully synchronized 618 * UNHARD - Unsynchronized masters present 619 * NOHARD - No masters visible 620 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 621 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 622 * UNSOFT - Unsynchronized slaves present 623 * NOSOFT - No slaves visible 624 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 625 * MSYNCED - All masters are fully synchronized 626 * SSYNCED - All known local slaves are fully synchronized to masters 627 * 628 * All available masters are always incorporated. All PFSs belonging to a 629 * cluster (master, slave, copy, whatever) always try to synchronize the 630 * total number of known masters in the PFSs root inode. 631 * 632 * A cluster might have access to many slaves, copies, or caches, but we 633 * have a limited number of cluster slots. Any such elements which are 634 * directly mounted from block device(s) will always be incorporated. Note 635 * that SSYNCED only applies to such elements which are directly mounted, 636 * not to any remote slaves, copies, or caches that could be available. These 637 * bits are used to monitor and drive our synchronization threads. 638 * 639 * When asking the question 'is any data accessible at all', then a simple 640 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 641 * these bits are set the object can be read with certain caveats: 642 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 643 * and RDSLAVE - not authoritative, has some data but it could be old or 644 * incomplete. 645 * 646 * When both soft and hard mounts are available, data will be read and written 647 * via the soft mount only. But all might be in the cluster because 648 * background synchronization threads still need to do their work. 649 */ 650 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 651 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 652 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 653 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 654 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 655 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 656 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 657 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 658 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 659 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 660 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 661 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 662 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 663 664 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 665 HAMMER2_CLUSTER_RDSOFT | \ 666 HAMMER2_CLUSTER_RDSLAVE) 667 668 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 669 HAMMER2_CLUSTER_RDSOFT) 670 671 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 672 HAMMER2_CLUSTER_WRSOFT) 673 674 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 675 HAMMER2_CLUSTER_RDHARD | \ 676 HAMMER2_CLUSTER_WRSOFT | \ 677 HAMMER2_CLUSTER_RDSOFT | \ 678 HAMMER2_CLUSTER_MSYNCED | \ 679 HAMMER2_CLUSTER_SSYNCED) 680 681 /* 682 * Helper functions (cluster must be locked for flags to be valid). 683 */ 684 static __inline 685 int 686 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 687 { 688 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 689 } 690 691 static __inline 692 int 693 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 694 { 695 return (cluster->flags & HAMMER2_CLUSTER_WROK); 696 } 697 698 RB_HEAD(hammer2_inode_tree, hammer2_inode); 699 700 /* 701 * A hammer2 inode. 702 * 703 * NOTE: The inode-embedded cluster is never used directly for I/O (since 704 * it may be shared). Instead it will be replicated-in and synchronized 705 * back out if changed. 706 */ 707 struct hammer2_inode { 708 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 709 hammer2_mtx_t lock; /* inode lock */ 710 hammer2_mtx_t truncate_lock; /* prevent truncates */ 711 struct hammer2_pfs *pmp; /* PFS mount */ 712 struct vnode *vp; 713 struct spinlock cluster_spin; /* update cluster */ 714 hammer2_cluster_t cluster; 715 struct lockf advlock; 716 u_int flags; 717 u_int refs; /* +vpref, +flushref */ 718 uint8_t comp_heuristic; 719 hammer2_inode_meta_t meta; /* copy of meta-data */ 720 hammer2_off_t osize; 721 }; 722 723 typedef struct hammer2_inode hammer2_inode_t; 724 725 /* 726 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 727 * RESIZED - Inode truncated (any) or inode extended beyond 728 * EMBEDDED_BYTES. 729 */ 730 #define HAMMER2_INODE_MODIFIED 0x0001 731 #define HAMMER2_INODE_SROOT 0x0002 /* kmalloc special case */ 732 #define HAMMER2_INODE_RENAME_INPROG 0x0004 733 #define HAMMER2_INODE_ONRBTREE 0x0008 734 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_fsync */ 735 #define HAMMER2_INODE_ISDELETED 0x0020 /* deleted */ 736 #define HAMMER2_INODE_ISUNLINKED 0x0040 737 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 738 #define HAMMER2_INODE_ONSIDEQ 0x0100 /* on side processing queue */ 739 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 740 741 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 742 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 743 hammer2_tid_t); 744 745 /* 746 * inode-unlink side-structure 747 */ 748 struct hammer2_inode_sideq { 749 TAILQ_ENTRY(hammer2_inode_sideq) entry; 750 hammer2_inode_t *ip; 751 }; 752 TAILQ_HEAD(h2_sideq_list, hammer2_inode_sideq); 753 754 typedef struct hammer2_inode_sideq hammer2_inode_sideq_t; 755 756 /* 757 * Transaction management sub-structure under hammer2_pfs 758 */ 759 struct hammer2_trans { 760 uint32_t flags; 761 uint32_t sync_wait; 762 }; 763 764 typedef struct hammer2_trans hammer2_trans_t; 765 766 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 767 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 768 #define HAMMER2_TRANS_UNUSED20 0x20000000 769 #define HAMMER2_TRANS_FPENDING 0x10000000 /* flush pending */ 770 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 771 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 772 773 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-MINIORADIX */ 774 #define HAMMER2_FREEMAP_HEUR_TYPES 8 775 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 776 HAMMER2_FREEMAP_HEUR_TYPES) 777 778 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 779 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 780 781 #define HAMMER2_FLUSH_TOP 0x0001 782 #define HAMMER2_FLUSH_ALL 0x0002 783 784 785 /* 786 * Hammer2 support thread element. 787 * 788 * Potentially many support threads can hang off of hammer2, primarily 789 * off the hammer2_pfs structure. Typically: 790 * 791 * td x Nodes A synchronization thread for each node. 792 * td x Nodes x workers Worker threads for frontend operations. 793 * td x 1 Bioq thread for logical buffer writes. 794 * 795 * In addition, the synchronization thread(s) associated with the 796 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 797 * and dedup scans. 798 */ 799 struct hammer2_thread { 800 struct hammer2_pfs *pmp; 801 struct hammer2_dev *hmp; 802 hammer2_xop_list_t xopq; 803 thread_t td; 804 uint32_t flags; 805 int depth; 806 int clindex; /* cluster element index */ 807 int repidx; 808 char *scratch; /* MAXPHYS */ 809 }; 810 811 typedef struct hammer2_thread hammer2_thread_t; 812 813 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 814 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 815 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 816 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 817 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 818 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 819 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 820 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 821 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 822 #define HAMMER2_THREAD_UNFREEZE 0x0200 823 824 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 825 HAMMER2_THREAD_REMASTER | \ 826 HAMMER2_THREAD_STOP | \ 827 HAMMER2_THREAD_FREEZE | \ 828 HAMMER2_THREAD_XOPQ) 829 830 /* 831 * Support structure for dedup heuristic. 832 */ 833 struct hammer2_dedup { 834 hammer2_off_t data_off; 835 uint64_t data_crc; 836 uint32_t ticks; 837 uint32_t unused03; 838 }; 839 840 typedef struct hammer2_dedup hammer2_dedup_t; 841 842 /* 843 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 844 * 845 * This structure is used to distribute a VOP operation across multiple 846 * nodes. It provides a rendezvous for concurrent node execution and 847 * can be detached from the frontend operation to allow the frontend to 848 * return early. 849 * 850 * This structure also sequences operations on up to three inodes. 851 */ 852 typedef void (*hammer2_xop_func_t)(hammer2_thread_t *thr, 853 union hammer2_xop *xop); 854 855 struct hammer2_xop_fifo { 856 TAILQ_ENTRY(hammer2_xop_head) entry; 857 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 858 int errors[HAMMER2_XOPFIFO]; 859 int ri; 860 int wi; 861 int flags; 862 hammer2_thread_t *thr; 863 }; 864 865 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 866 867 #define HAMMER2_XOP_FIFO_RUN 0x0001 868 #define HAMMER2_XOP_FIFO_STALL 0x0002 869 870 struct hammer2_xop_head { 871 hammer2_xop_func_t func; 872 hammer2_tid_t mtid; 873 struct hammer2_inode *ip1; 874 struct hammer2_inode *ip2; 875 struct hammer2_inode *ip3; 876 uint64_t run_mask; 877 uint64_t chk_mask; 878 int flags; 879 int state; 880 int error; 881 hammer2_key_t collect_key; 882 char *name1; 883 size_t name1_len; 884 char *name2; 885 size_t name2_len; 886 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 887 hammer2_cluster_t cluster; /* help collections */ 888 }; 889 890 typedef struct hammer2_xop_head hammer2_xop_head_t; 891 892 struct hammer2_xop_ipcluster { 893 hammer2_xop_head_t head; 894 }; 895 896 struct hammer2_xop_strategy { 897 hammer2_xop_head_t head; 898 hammer2_key_t lbase; 899 int finished; 900 hammer2_mtx_t lock; 901 struct bio *bio; 902 }; 903 904 struct hammer2_xop_readdir { 905 hammer2_xop_head_t head; 906 hammer2_key_t lkey; 907 }; 908 909 struct hammer2_xop_nresolve { 910 hammer2_xop_head_t head; 911 hammer2_key_t lhc; /* if name is NULL used lhc */ 912 }; 913 914 struct hammer2_xop_unlink { 915 hammer2_xop_head_t head; 916 int isdir; 917 int dopermanent; 918 }; 919 920 #define H2DOPERM_PERMANENT 0x01 921 #define H2DOPERM_FORCE 0x02 922 #define H2DOPERM_IGNINO 0x04 923 924 struct hammer2_xop_nrename { 925 hammer2_xop_head_t head; 926 hammer2_tid_t lhc; 927 int ip_key; 928 }; 929 930 struct hammer2_xop_scanlhc { 931 hammer2_xop_head_t head; 932 hammer2_key_t lhc; 933 }; 934 935 struct hammer2_xop_scanall { 936 hammer2_xop_head_t head; 937 hammer2_key_t key_beg; /* inclusive */ 938 hammer2_key_t key_end; /* inclusive */ 939 int resolve_flags; 940 int lookup_flags; 941 }; 942 943 struct hammer2_xop_lookup { 944 hammer2_xop_head_t head; 945 hammer2_key_t lhc; 946 }; 947 948 struct hammer2_xop_mkdirent { 949 hammer2_xop_head_t head; 950 hammer2_dirent_head_t dirent; 951 hammer2_key_t lhc; 952 }; 953 954 struct hammer2_xop_create { 955 hammer2_xop_head_t head; 956 hammer2_inode_meta_t meta; /* initial metadata */ 957 hammer2_key_t lhc; 958 int flags; 959 }; 960 961 struct hammer2_xop_destroy { 962 hammer2_xop_head_t head; 963 }; 964 965 struct hammer2_xop_fsync { 966 hammer2_xop_head_t head; 967 hammer2_inode_meta_t meta; 968 hammer2_off_t osize; 969 u_int ipflags; 970 int clear_directdata; 971 }; 972 973 struct hammer2_xop_unlinkall { 974 hammer2_xop_head_t head; 975 hammer2_key_t key_beg; 976 hammer2_key_t key_end; 977 }; 978 979 struct hammer2_xop_connect { 980 hammer2_xop_head_t head; 981 hammer2_key_t lhc; 982 }; 983 984 struct hammer2_xop_flush { 985 hammer2_xop_head_t head; 986 }; 987 988 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 989 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 990 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 991 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 992 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 993 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 994 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 995 typedef struct hammer2_xop_create hammer2_xop_create_t; 996 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 997 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 998 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 999 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1000 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1001 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1002 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1003 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1004 1005 union hammer2_xop { 1006 hammer2_xop_head_t head; 1007 hammer2_xop_ipcluster_t xop_ipcluster; 1008 hammer2_xop_readdir_t xop_readdir; 1009 hammer2_xop_nresolve_t xop_nresolve; 1010 hammer2_xop_unlink_t xop_unlink; 1011 hammer2_xop_nrename_t xop_nrename; 1012 hammer2_xop_strategy_t xop_strategy; 1013 hammer2_xop_mkdirent_t xop_mkdirent; 1014 hammer2_xop_create_t xop_create; 1015 hammer2_xop_destroy_t xop_destroy; 1016 hammer2_xop_fsync_t xop_fsync; 1017 hammer2_xop_unlinkall_t xop_unlinkall; 1018 hammer2_xop_scanlhc_t xop_scanlhc; 1019 hammer2_xop_scanall_t xop_scanall; 1020 hammer2_xop_lookup_t xop_lookup; 1021 hammer2_xop_flush_t xop_flush; 1022 hammer2_xop_connect_t xop_connect; 1023 }; 1024 1025 typedef union hammer2_xop hammer2_xop_t; 1026 1027 /* 1028 * hammer2_xop_group - Manage XOP support threads. 1029 */ 1030 struct hammer2_xop_group { 1031 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1032 }; 1033 1034 typedef struct hammer2_xop_group hammer2_xop_group_t; 1035 1036 /* 1037 * flags to hammer2_xop_collect() 1038 */ 1039 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1040 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1041 1042 /* 1043 * flags to hammer2_xop_alloc() 1044 * 1045 * MODIFYING - This is a modifying transaction, allocate a mtid. 1046 */ 1047 #define HAMMER2_XOP_MODIFYING 0x00000001 1048 #define HAMMER2_XOP_STRATEGY 0x00000002 1049 1050 /* 1051 * Global (per partition) management structure, represents a hard block 1052 * device. Typically referenced by hammer2_chain structures when applicable. 1053 * Typically not used for network-managed elements. 1054 * 1055 * Note that a single hammer2_dev can be indirectly tied to multiple system 1056 * mount points. There is no direct relationship. System mounts are 1057 * per-cluster-id, not per-block-device, and a single hard mount might contain 1058 * many PFSs and those PFSs might combine together in various ways to form 1059 * the set of available clusters. 1060 */ 1061 struct hammer2_dev { 1062 struct vnode *devvp; /* device vnode */ 1063 int ronly; /* read-only mount */ 1064 int mount_count; /* number of actively mounted PFSs */ 1065 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1066 1067 struct malloc_type *mchain; 1068 int nipstacks; 1069 int maxipstacks; 1070 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1071 struct spinlock io_spin; /* iotree, iolruq access */ 1072 struct hammer2_io_tree iotree; 1073 int iofree_count; 1074 int freemap_relaxed; 1075 hammer2_chain_t vchain; /* anchor chain (topology) */ 1076 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1077 struct spinlock list_spin; 1078 struct h2_flush_list flushq; /* flush seeds */ 1079 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1080 struct lock vollk; /* lockmgr lock */ 1081 struct lock bulklk; /* bulkfree operation lock */ 1082 struct lock bflock; /* bulk-free manual function lock */ 1083 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1084 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1085 int volhdrno; /* last volhdrno written */ 1086 uint32_t hflags; /* HMNT2 flags applicable to device */ 1087 hammer2_off_t free_reserved; /* nominal free reserved */ 1088 hammer2_thread_t bfthr; /* bulk-free thread */ 1089 char devrepname[64]; /* for kprintf */ 1090 hammer2_ioc_bulkfree_t bflast; /* stats for last bulkfree run */ 1091 hammer2_volume_data_t voldata; 1092 hammer2_volume_data_t volsync; /* synchronized voldata */ 1093 }; 1094 1095 typedef struct hammer2_dev hammer2_dev_t; 1096 1097 /* 1098 * Helper functions (cluster must be locked for flags to be valid). 1099 */ 1100 static __inline 1101 int 1102 hammer2_chain_rdok(hammer2_chain_t *chain) 1103 { 1104 return (chain->error == 0); 1105 } 1106 1107 static __inline 1108 int 1109 hammer2_chain_wrok(hammer2_chain_t *chain) 1110 { 1111 return (chain->error == 0 && chain->hmp->ronly == 0); 1112 } 1113 1114 /* 1115 * Per-cluster management structure. This structure will be tied to a 1116 * system mount point if the system is mounting the PFS, but is also used 1117 * to manage clusters encountered during the super-root scan or received 1118 * via LNK_SPANs that might not be mounted. 1119 * 1120 * This structure is also used to represent the super-root that hangs off 1121 * of a hard mount point. The super-root is not really a cluster element. 1122 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1123 * this than to special case super-root manipulation in the hammer2_chain* 1124 * code as being only hammer2_dev-related. 1125 * 1126 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1127 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1128 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1129 * how many masters have been configured for a cluster and is always 1130 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1131 * iroot cluster and describes the PFS types of the nodes making up the 1132 * cluster. 1133 * 1134 * WARNING! Portions of this structure have deferred initialization. In 1135 * particular, if not mounted there will be no wthread. 1136 * umounted network PFSs will also be missing iroot and numerous 1137 * other fields will not be initialized prior to mount. 1138 * 1139 * Synchronization threads are chain-specific and only applicable 1140 * to local hard PFS entries. A hammer2_pfs structure may contain 1141 * more than one when multiple hard PFSs are present on the local 1142 * machine which require synchronization monitoring. Most PFSs 1143 * (such as snapshots) are 1xMASTER PFSs which do not need a 1144 * synchronization thread. 1145 * 1146 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1147 * hammer2_dev->mount_count when the pfs is associated with a mount 1148 * point. 1149 */ 1150 struct hammer2_pfs { 1151 struct mount *mp; 1152 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1153 uuid_t pfs_clid; 1154 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1155 hammer2_dev_t *force_local; /* only if 'local' mount */ 1156 hammer2_inode_t *iroot; /* PFS root inode */ 1157 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1158 char *pfs_names[HAMMER2_MAXCLUSTER]; 1159 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1160 hammer2_trans_t trans; 1161 struct lock lock; /* PFS lock for certain ops */ 1162 struct lock lock_nlink; /* rename and nlink lock */ 1163 struct netexport export; /* nfs export */ 1164 int ronly; /* read-only mount */ 1165 int hflags; /* pfs-specific mount flags */ 1166 struct malloc_type *minode; 1167 struct malloc_type *mmsg; 1168 struct spinlock inum_spin; /* inumber lookup */ 1169 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1170 long inum_count; /* #of inodes in inum_tree */ 1171 struct spinlock lru_spin; /* inumber lookup */ 1172 struct hammer2_chain_list lru_list; /* chains on LRU */ 1173 int lru_count; /* #of chains on LRU */ 1174 hammer2_tid_t modify_tid; /* modify transaction id */ 1175 hammer2_tid_t inode_tid; /* inode allocator */ 1176 uint8_t pfs_nmasters; /* total masters */ 1177 uint8_t pfs_mode; /* operating mode PFSMODE */ 1178 uint8_t unused01; 1179 uint8_t unused02; 1180 int free_ticks; /* free_* calculations */ 1181 long inmem_inodes; 1182 hammer2_off_t free_reserved; 1183 hammer2_off_t free_nominal; 1184 uint32_t inmem_dirty_chains; 1185 int count_lwinprog; /* logical write in prog */ 1186 struct spinlock list_spin; 1187 struct h2_sideq_list sideq; /* last-close dirty/unlink */ 1188 long sideq_count; 1189 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1190 uint32_t cluster_flags; /* cached cluster flags */ 1191 int has_xop_threads; 1192 struct spinlock xop_spin; /* xop sequencer */ 1193 hammer2_xop_group_t xop_groups[HAMMER2_XOPGROUPS]; 1194 }; 1195 1196 typedef struct hammer2_pfs hammer2_pfs_t; 1197 1198 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1199 1200 #define HAMMER2_LRU_LIMIT 1024 /* per pmp lru_list */ 1201 1202 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1203 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1204 1205 #define HAMMER2_LWINPROG_WAITING 0x80000000 1206 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1207 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1208 1209 /* 1210 * hammer2_cluster_check 1211 */ 1212 #define HAMMER2_CHECK_NULL 0x00000001 1213 1214 /* 1215 * Misc 1216 */ 1217 #if defined(_KERNEL) 1218 1219 MALLOC_DECLARE(M_HAMMER2); 1220 1221 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1222 #define ITOV(ip) ((ip)->vp) 1223 1224 /* 1225 * Currently locked chains retain the locked buffer cache buffer for 1226 * indirect blocks, and indirect blocks can be one of two sizes. The 1227 * device buffer has to match the case to avoid deadlocking recursive 1228 * chains that might otherwise try to access different offsets within 1229 * the same device buffer. 1230 */ 1231 static __inline 1232 int 1233 hammer2_devblkradix(int radix) 1234 { 1235 #if 0 1236 if (radix <= HAMMER2_LBUFRADIX) { 1237 return (HAMMER2_LBUFRADIX); 1238 } else { 1239 return (HAMMER2_PBUFRADIX); 1240 } 1241 #endif 1242 return (HAMMER2_PBUFRADIX); 1243 } 1244 1245 /* 1246 * XXX almost time to remove this. DIO uses PBUFSIZE exclusively now. 1247 */ 1248 static __inline 1249 size_t 1250 hammer2_devblksize(size_t bytes) 1251 { 1252 #if 0 1253 if (bytes <= HAMMER2_LBUFSIZE) { 1254 return(HAMMER2_LBUFSIZE); 1255 } else { 1256 KKASSERT(bytes <= HAMMER2_PBUFSIZE && 1257 (bytes ^ (bytes - 1)) == ((bytes << 1) - 1)); 1258 return (HAMMER2_PBUFSIZE); 1259 } 1260 #endif 1261 return (HAMMER2_PBUFSIZE); 1262 } 1263 1264 1265 static __inline 1266 hammer2_pfs_t * 1267 MPTOPMP(struct mount *mp) 1268 { 1269 return ((hammer2_pfs_t *)mp->mnt_data); 1270 } 1271 1272 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1273 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1274 1275 static __inline 1276 uint64_t 1277 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1278 { 1279 int bbeg; 1280 int bits; 1281 uint64_t mask; 1282 1283 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1284 HAMMER2_DEDUP_FRAGRADIX; 1285 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1286 HAMMER2_DEDUP_FRAGRADIX); 1287 mask = ((uint64_t)1 << bbeg) - 1; 1288 if (bbeg + bits == 64) 1289 mask = (uint64_t)-1; 1290 else 1291 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1292 1293 mask &= ~(((uint64_t)1 << bbeg) - 1); 1294 1295 return mask; 1296 } 1297 1298 static __inline 1299 int 1300 hammer2_error_to_errno(int error) 1301 { 1302 if (error) { 1303 if (error & HAMMER2_ERROR_EIO) 1304 error = EIO; 1305 else if (error & HAMMER2_ERROR_CHECK) 1306 error = EDOM; 1307 else if (error & HAMMER2_ERROR_ABORTED) 1308 error = EINTR; 1309 else if (error & HAMMER2_ERROR_BADBREF) 1310 error = EIO; 1311 else if (error & HAMMER2_ERROR_ENOSPC) 1312 error = ENOSPC; 1313 else if (error & HAMMER2_ERROR_ENOENT) 1314 error = ENOENT; 1315 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1316 error = ENOTEMPTY; 1317 else if (error & HAMMER2_ERROR_EAGAIN) 1318 error = EAGAIN; 1319 else if (error & HAMMER2_ERROR_ENOTDIR) 1320 error = ENOTDIR; 1321 else if (error & HAMMER2_ERROR_EISDIR) 1322 error = EISDIR; 1323 else if (error & HAMMER2_ERROR_EINPROGRESS) 1324 error = EINPROGRESS; 1325 else if (error & HAMMER2_ERROR_EEXIST) 1326 error = EEXIST; 1327 else 1328 error = EDOM; 1329 } 1330 return error; 1331 } 1332 1333 static __inline 1334 int 1335 hammer2_errno_to_error(int error) 1336 { 1337 switch(error) { 1338 case 0: 1339 return 0; 1340 case EIO: 1341 return HAMMER2_ERROR_EIO; 1342 case EINVAL: 1343 default: 1344 return HAMMER2_ERROR_EINVAL; 1345 } 1346 } 1347 1348 extern struct vop_ops hammer2_vnode_vops; 1349 extern struct vop_ops hammer2_spec_vops; 1350 extern struct vop_ops hammer2_fifo_vops; 1351 extern struct hammer2_pfslist hammer2_pfslist; 1352 extern struct lock hammer2_mntlk; 1353 1354 1355 extern int hammer2_debug; 1356 extern int hammer2_cluster_meta_read; 1357 extern int hammer2_cluster_data_read; 1358 extern int hammer2_dedup_enable; 1359 extern int hammer2_always_compress; 1360 extern int hammer2_inval_enable; 1361 extern int hammer2_flush_pipe; 1362 extern int hammer2_synchronous_flush; 1363 extern int hammer2_dio_count; 1364 extern int hammer2_limit_dio; 1365 extern int hammer2_bulkfree_tps; 1366 extern long hammer2_chain_allocs; 1367 extern long hammer2_chain_frees; 1368 extern long hammer2_limit_dirty_chains; 1369 extern long hammer2_count_modified_chains; 1370 extern long hammer2_iod_invals; 1371 extern long hammer2_iod_file_read; 1372 extern long hammer2_iod_meta_read; 1373 extern long hammer2_iod_indr_read; 1374 extern long hammer2_iod_fmap_read; 1375 extern long hammer2_iod_volu_read; 1376 extern long hammer2_iod_file_write; 1377 extern long hammer2_iod_file_wembed; 1378 extern long hammer2_iod_file_wzero; 1379 extern long hammer2_iod_file_wdedup; 1380 extern long hammer2_iod_meta_write; 1381 extern long hammer2_iod_indr_write; 1382 extern long hammer2_iod_fmap_write; 1383 extern long hammer2_iod_volu_write; 1384 1385 extern long hammer2_check_xxhash64; 1386 extern long hammer2_check_icrc32; 1387 1388 extern struct objcache *cache_buffer_read; 1389 extern struct objcache *cache_buffer_write; 1390 extern struct objcache *cache_xops; 1391 1392 /* 1393 * hammer2_subr.c 1394 */ 1395 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1396 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1397 1398 int hammer2_signal_check(time_t *timep); 1399 const char *hammer2_error_str(int error); 1400 1401 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1402 void hammer2_inode_unlock(hammer2_inode_t *ip); 1403 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1404 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1405 int clindex, hammer2_chain_t **parentp, int how); 1406 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1407 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1408 hammer2_mtx_state_t ostate); 1409 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1410 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1411 1412 void hammer2_dev_exlock(hammer2_dev_t *hmp); 1413 void hammer2_dev_shlock(hammer2_dev_t *hmp); 1414 void hammer2_dev_unlock(hammer2_dev_t *hmp); 1415 1416 int hammer2_get_dtype(uint8_t type); 1417 int hammer2_get_vtype(uint8_t type); 1418 uint8_t hammer2_get_obj_type(enum vtype vtype); 1419 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1420 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1421 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1422 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1423 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1424 1425 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1426 int hammer2_getradix(size_t bytes); 1427 1428 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1429 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1430 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1431 void hammer2_update_time(uint64_t *timep); 1432 void hammer2_adjreadcounter(hammer2_blockref_t *bref, size_t bytes); 1433 1434 /* 1435 * hammer2_inode.c 1436 */ 1437 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1438 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1439 hammer2_tid_t inum); 1440 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, hammer2_inode_t *dip, 1441 hammer2_cluster_t *cluster, int idx); 1442 void hammer2_inode_free(hammer2_inode_t *ip); 1443 void hammer2_inode_ref(hammer2_inode_t *ip); 1444 void hammer2_inode_drop(hammer2_inode_t *ip); 1445 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_inode_t *pip, 1446 hammer2_cluster_t *cluster); 1447 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1448 int idx); 1449 void hammer2_inode_modify(hammer2_inode_t *ip); 1450 void hammer2_inode_run_sideq(hammer2_pfs_t *pmp, int doall); 1451 1452 hammer2_inode_t *hammer2_inode_create(hammer2_inode_t *dip, 1453 hammer2_inode_t *pip, 1454 struct vattr *vap, struct ucred *cred, 1455 const uint8_t *name, size_t name_len, hammer2_key_t lhc, 1456 hammer2_key_t inum, uint8_t type, uint8_t target_type, 1457 int flags, int *errorp); 1458 void hammer2_inode_chain_sync(hammer2_inode_t *ip); 1459 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1460 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1461 size_t name_len, hammer2_key_t inum, uint8_t type); 1462 1463 /* 1464 * hammer2_chain.c 1465 */ 1466 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1467 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1468 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1469 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1470 hammer2_pfs_t *pmp, 1471 hammer2_blockref_t *bref); 1472 void hammer2_chain_core_init(hammer2_chain_t *chain); 1473 void hammer2_chain_ref(hammer2_chain_t *chain); 1474 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1475 void hammer2_chain_drop(hammer2_chain_t *chain); 1476 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1477 void hammer2_chain_lock(hammer2_chain_t *chain, int how); 1478 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1479 void hammer2_chain_load_data(hammer2_chain_t *chain); 1480 const hammer2_media_data_t *hammer2_chain_rdata(hammer2_chain_t *chain); 1481 hammer2_media_data_t *hammer2_chain_wdata(hammer2_chain_t *chain); 1482 1483 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1484 int clindex, int flags, 1485 hammer2_chain_t **parentp, 1486 hammer2_chain_t **chainp); 1487 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1488 hammer2_off_t dedup_off, int flags); 1489 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1490 hammer2_tid_t mtid, int flags); 1491 int hammer2_chain_resize(hammer2_chain_t *chain, 1492 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1493 int nradix, int flags); 1494 void hammer2_chain_unlock(hammer2_chain_t *chain); 1495 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1496 void hammer2_chain_wait(hammer2_chain_t *chain); 1497 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1498 hammer2_blockref_t *bref); 1499 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1500 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1501 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1502 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1503 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1504 hammer2_key_t *key_nextp, 1505 hammer2_key_t key_beg, hammer2_key_t key_end, 1506 int *errorp, int flags); 1507 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1508 hammer2_chain_t *chain, 1509 hammer2_key_t *key_nextp, 1510 hammer2_key_t key_beg, hammer2_key_t key_end, 1511 int *errorp, int flags); 1512 int hammer2_chain_scan(hammer2_chain_t *parent, 1513 hammer2_chain_t **chainp, 1514 hammer2_blockref_t *bref, 1515 int *firstp, int flags); 1516 1517 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1518 hammer2_pfs_t *pmp, int methods, 1519 hammer2_key_t key, int keybits, 1520 int type, size_t bytes, hammer2_tid_t mtid, 1521 hammer2_off_t dedup_off, int flags); 1522 void hammer2_chain_rename(hammer2_blockref_t *bref, 1523 hammer2_chain_t **parentp, 1524 hammer2_chain_t *chain, 1525 hammer2_tid_t mtid, int flags); 1526 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1527 hammer2_tid_t mtid, int flags); 1528 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1529 hammer2_chain_t *chain); 1530 void hammer2_chain_setflush(hammer2_chain_t *chain); 1531 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1532 hammer2_blockref_t *base, int count); 1533 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1534 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1535 1536 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1537 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1538 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1539 size_t name_len); 1540 1541 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1542 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1543 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp); 1544 1545 void hammer2_base_delete(hammer2_chain_t *parent, 1546 hammer2_blockref_t *base, int count, 1547 hammer2_chain_t *chain); 1548 void hammer2_base_insert(hammer2_chain_t *parent, 1549 hammer2_blockref_t *base, int count, 1550 hammer2_chain_t *chain, 1551 hammer2_blockref_t *elm); 1552 1553 /* 1554 * hammer2_flush.c 1555 */ 1556 int hammer2_flush(hammer2_chain_t *chain, int istop); 1557 void hammer2_delayed_flush(hammer2_chain_t *chain); 1558 1559 /* 1560 * hammer2_trans.c 1561 */ 1562 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1563 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1564 void hammer2_trans_done(hammer2_pfs_t *pmp); 1565 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1566 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1567 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1568 char *data); 1569 1570 /* 1571 * hammer2_ioctl.c 1572 */ 1573 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1574 int fflag, struct ucred *cred); 1575 1576 /* 1577 * hammer2_io.c 1578 */ 1579 void hammer2_io_putblk(hammer2_io_t **diop); 1580 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1581 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1582 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1583 void hammer2_io_bkvasync(hammer2_io_t *dio); 1584 hammer2_io_t *hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1585 int lsize, int op); 1586 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1587 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1588 hammer2_off_t data_off, u_int bytes); 1589 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1590 u_int bytes); 1591 void hammer2_io_callback(struct bio *bio); 1592 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1593 hammer2_io_t **diop); 1594 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1595 hammer2_io_t **diop); 1596 int hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1597 hammer2_io_t **diop); 1598 hammer2_io_t *hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, int lsize); 1599 void hammer2_io_bawrite(hammer2_io_t **diop); 1600 void hammer2_io_bdwrite(hammer2_io_t **diop); 1601 int hammer2_io_bwrite(hammer2_io_t **diop); 1602 void hammer2_io_setdirty(hammer2_io_t *dio); 1603 void hammer2_io_brelse(hammer2_io_t **diop); 1604 void hammer2_io_bqrelse(hammer2_io_t **diop); 1605 1606 /* 1607 * hammer2_thread.c 1608 */ 1609 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1610 void hammer2_thr_signal2(hammer2_thread_t *thr, 1611 uint32_t pflags, uint32_t nflags); 1612 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1613 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1614 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1615 void hammer2_thr_create(hammer2_thread_t *thr, 1616 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1617 const char *id, int clindex, int repidx, 1618 void (*func)(void *arg)); 1619 void hammer2_thr_delete(hammer2_thread_t *thr); 1620 void hammer2_thr_remaster(hammer2_thread_t *thr); 1621 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1622 void hammer2_thr_freeze(hammer2_thread_t *thr); 1623 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1624 int hammer2_thr_break(hammer2_thread_t *thr); 1625 void hammer2_primary_xops_thread(void *arg); 1626 1627 /* 1628 * hammer2_thread.c (XOP API) 1629 */ 1630 void hammer2_xop_group_init(hammer2_pfs_t *pmp, hammer2_xop_group_t *xgrp); 1631 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1632 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1633 const char *name, size_t name_len); 1634 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1635 const char *name, size_t name_len); 1636 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1637 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1638 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1639 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1640 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1641 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1642 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_func_t func); 1643 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_func_t func, 1644 int notidx); 1645 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1646 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1647 int hammer2_xop_active(hammer2_xop_head_t *xop); 1648 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1649 int clindex, int error); 1650 1651 /* 1652 * hammer2_synchro.c 1653 */ 1654 void hammer2_primary_sync_thread(void *arg); 1655 1656 /* 1657 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1658 * may be integrated into other source files. 1659 */ 1660 void hammer2_xop_ipcluster(hammer2_thread_t *thr, hammer2_xop_t *xop); 1661 void hammer2_xop_readdir(hammer2_thread_t *thr, hammer2_xop_t *xop); 1662 void hammer2_xop_nresolve(hammer2_thread_t *thr, hammer2_xop_t *xop); 1663 void hammer2_xop_unlink(hammer2_thread_t *thr, hammer2_xop_t *xop); 1664 void hammer2_xop_nrename(hammer2_thread_t *thr, hammer2_xop_t *xop); 1665 void hammer2_xop_scanlhc(hammer2_thread_t *thr, hammer2_xop_t *xop); 1666 void hammer2_xop_scanall(hammer2_thread_t *thr, hammer2_xop_t *xop); 1667 void hammer2_xop_lookup(hammer2_thread_t *thr, hammer2_xop_t *xop); 1668 void hammer2_inode_xop_mkdirent(hammer2_thread_t *thr, hammer2_xop_t *xop); 1669 void hammer2_inode_xop_create(hammer2_thread_t *thr, hammer2_xop_t *xop); 1670 void hammer2_inode_xop_destroy(hammer2_thread_t *thr, hammer2_xop_t *xop); 1671 void hammer2_inode_xop_chain_sync(hammer2_thread_t *thr, hammer2_xop_t *xop); 1672 void hammer2_inode_xop_unlinkall(hammer2_thread_t *thr, hammer2_xop_t *xop); 1673 void hammer2_inode_xop_connect(hammer2_thread_t *thr, hammer2_xop_t *xop); 1674 void hammer2_inode_xop_flush(hammer2_thread_t *thr, hammer2_xop_t *xop); 1675 1676 /* 1677 * hammer2_msgops.c 1678 */ 1679 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1680 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1681 1682 /* 1683 * hammer2_vfsops.c 1684 */ 1685 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1686 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int *countp, char pfx); 1687 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1688 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1689 1690 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1691 const hammer2_inode_data_t *ripdata, 1692 hammer2_tid_t modify_tid, 1693 hammer2_dev_t *force_local); 1694 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1695 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1696 ino_t ino, struct vnode **vpp); 1697 1698 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1699 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1700 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1701 1702 /* 1703 * hammer2_freemap.c 1704 */ 1705 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1706 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1707 hammer2_blockref_t *bref, int how); 1708 1709 /* 1710 * hammer2_cluster.c 1711 */ 1712 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1713 const hammer2_media_data_t *hammer2_cluster_rdata(hammer2_cluster_t *cluster); 1714 hammer2_media_data_t *hammer2_cluster_wdata(hammer2_cluster_t *cluster); 1715 hammer2_cluster_t *hammer2_cluster_from_chain(hammer2_chain_t *chain); 1716 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1717 hammer2_cluster_t *hammer2_cluster_alloc(hammer2_pfs_t *pmp, 1718 hammer2_blockref_t *bref); 1719 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1720 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1721 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1722 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1723 int flags); 1724 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1725 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1726 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1727 1728 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1729 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1730 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1731 struct hammer2_ioc_bulkfree *bfi); 1732 1733 /* 1734 * hammer2_iocom.c 1735 */ 1736 void hammer2_iocom_init(hammer2_dev_t *hmp); 1737 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1738 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1739 1740 /* 1741 * hammer2_strategy.c 1742 */ 1743 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1744 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1745 void hammer2_write_thread(void *arg); 1746 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1747 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1748 1749 #endif /* !_KERNEL */ 1750 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 1751