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/diskslice.h> 77 #include <sys/tree.h> 78 #include <sys/malloc.h> 79 #include <sys/mount.h> 80 #include <sys/vnode.h> 81 #include <sys/proc.h> 82 #include <sys/mountctl.h> 83 #include <sys/priv.h> 84 #include <sys/stat.h> 85 #include <sys/thread.h> 86 #include <sys/globaldata.h> 87 #include <sys/lockf.h> 88 #include <sys/buf.h> 89 #include <sys/queue.h> 90 #include <sys/limits.h> 91 #include <sys/dmsg.h> 92 #include <sys/mutex.h> 93 #ifdef _KERNEL 94 #include <sys/kern_syscall.h> 95 #endif 96 97 #ifdef _KERNEL 98 #include <sys/signal2.h> 99 #include <sys/buf2.h> 100 #include <sys/mutex2.h> 101 #include <sys/spinlock2.h> 102 #endif 103 104 #include "hammer2_xxhash.h" 105 #include "hammer2_disk.h" 106 #include "hammer2_mount.h" 107 #include "hammer2_ioctl.h" 108 109 struct hammer2_io; 110 struct hammer2_chain; 111 struct hammer2_cluster; 112 struct hammer2_inode; 113 struct hammer2_depend; 114 struct hammer2_dev; 115 struct hammer2_pfs; 116 struct hammer2_span; 117 struct hammer2_msg; 118 struct hammer2_thread; 119 union hammer2_xop; 120 121 /* 122 * Mutex and lock shims. Hammer2 requires support for asynchronous and 123 * abortable locks, and both exclusive and shared spinlocks. Normal 124 * synchronous non-abortable locks can be substituted for spinlocks. 125 */ 126 typedef mtx_t hammer2_mtx_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_upgrade_try mtx_upgrade_try 138 #define hammer2_mtx_downgrade mtx_downgrade 139 #define hammer2_mtx_owned mtx_owned 140 #define hammer2_mtx_init mtx_init 141 #define hammer2_mtx_temp_release mtx_lock_temp_release 142 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 143 #define hammer2_mtx_refs mtx_lockrefs 144 145 #define hammer2_spin_init spin_init 146 #define hammer2_spin_sh spin_lock_shared 147 #define hammer2_spin_ex spin_lock 148 #define hammer2_spin_unsh spin_unlock_shared 149 #define hammer2_spin_unex spin_unlock 150 151 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 152 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 153 154 typedef struct hammer2_xop_list hammer2_xop_list_t; 155 156 /* 157 * Cap the dynamic calculation for the maximum number of dirty 158 * chains and dirty inodes allowed. 159 */ 160 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 161 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 162 163 /* 164 * The chain structure tracks a portion of the media topology from the 165 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 166 * data blocks, and freemap nodes and leafs. 167 * 168 * The chain structure utilizes a simple singly-homed topology and the 169 * chain's in-memory topology will move around as the chains do, due mainly 170 * to renames and indirect block creation. 171 * 172 * Block Table Updates 173 * 174 * Block table updates for insertions and updates are delayed until the 175 * flush. This allows us to avoid having to modify the parent chain 176 * all the way to the root. 177 * 178 * Block table deletions are performed immediately (modifying the parent 179 * in the process) because the flush code uses the chain structure to 180 * track delayed updates and the chain will be (likely) gone or moved to 181 * another location in the topology after a deletion. 182 * 183 * A prior iteration of the code tried to keep the relationship intact 184 * on deletes by doing a delete-duplicate operation on the chain, but 185 * it added way too much complexity to the codebase. 186 * 187 * Flush Synchronization 188 * 189 * The flush code must flush modified chains bottom-up. Because chain 190 * structures can shift around and are NOT topologically stable, 191 * modified chains are independently indexed for the flush. As the flush 192 * runs it modifies (or further modifies) and updates the parents, 193 * propagating the flush all the way to the volume root. 194 * 195 * Modifying front-end operations can occur during a flush but will block 196 * in two cases: (1) when the front-end tries to operate on the inode 197 * currently in the midst of being flushed and (2) if the front-end 198 * crosses an inode currently being flushed (such as during a rename). 199 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 200 * the flusher is currently working on "a/b/c", the rename will block 201 * temporarily in order to ensure that "x" exists in one place or the 202 * other. 203 * 204 * Meta-data statistics are updated by the flusher. The front-end will 205 * make estimates but meta-data must be fully synchronized only during a 206 * flush in order to ensure that it remains correct across a crash. 207 * 208 * Multiple flush synchronizations can theoretically be in-flight at the 209 * same time but the implementation is not coded to handle the case and 210 * currently serializes them. 211 * 212 * Snapshots: 213 * 214 * Snapshots currently require the subdirectory tree being snapshotted 215 * to be flushed. The snapshot then creates a new super-root inode which 216 * copies the flushed blockdata of the directory or file that was 217 * snapshotted. 218 * 219 * Radix tree NOTES: 220 * 221 * - Note that the radix tree runs in powers of 2 only so sub-trees 222 * cannot straddle edges. 223 */ 224 RB_HEAD(hammer2_chain_tree, hammer2_chain); 225 226 struct hammer2_reptrack { 227 hammer2_spin_t spin; 228 struct hammer2_reptrack *next; 229 struct hammer2_chain *chain; 230 }; 231 232 /* 233 * Core topology for chain (embedded in chain). Protected by a spinlock. 234 */ 235 struct hammer2_chain_core { 236 hammer2_spin_t spin; 237 struct hammer2_reptrack *reptrack; 238 struct hammer2_chain_tree rbtree; /* sub-chains */ 239 int live_zero; /* blockref array opt */ 240 u_int live_count; /* live (not deleted) chains in tree */ 241 u_int chain_count; /* live + deleted chains under core */ 242 int generation; /* generation number (inserts only) */ 243 }; 244 245 typedef struct hammer2_chain_core hammer2_chain_core_t; 246 247 RB_HEAD(hammer2_io_tree, hammer2_io); 248 249 /* 250 * DIO - Management structure wrapping system buffer cache. 251 * 252 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 253 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 254 * structures. 255 */ 256 /* #define HAMMER2_IO_DEBUG */ 257 258 #ifdef HAMMER2_IO_DEBUG 259 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 260 #define HAMMER2_IO_DEBUG_CALL , file, line 261 #define HAMMER2_IO_DEBUG_COUNT 2048 262 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 263 #else 264 #define HAMMER2_IO_DEBUG_ARGS 265 #define HAMMER2_IO_DEBUG_CALL 266 #endif 267 268 struct hammer2_io { 269 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 270 struct hammer2_dev *hmp; 271 struct vnode *devvp; 272 struct buf *bp; 273 off_t dbase; /* offset of devvp within volumes */ 274 off_t pbase; 275 uint64_t refs; 276 int psize; 277 int act; /* activity */ 278 int btype; /* approximate BREF_TYPE_* */ 279 int ticks; 280 int error; 281 #ifdef HAMMER2_IO_DEBUG 282 int debug_index; 283 #else 284 int unused01; 285 #endif 286 uint64_t dedup_valid; /* valid for dedup operation */ 287 uint64_t dedup_alloc; /* allocated / de-dupable */ 288 #ifdef HAMMER2_IO_DEBUG 289 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 290 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 291 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 292 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 293 #endif 294 }; 295 296 typedef struct hammer2_io hammer2_io_t; 297 298 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 299 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 300 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 301 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 302 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 303 304 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 305 306 /* 307 * Primary chain structure keeps track of the topology in-memory. 308 */ 309 struct hammer2_chain { 310 hammer2_mtx_t lock; 311 hammer2_chain_core_t core; 312 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 313 hammer2_blockref_t bref; 314 struct hammer2_chain *parent; 315 struct hammer2_dev *hmp; 316 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 317 318 struct lock diolk; /* xop focus interlock */ 319 hammer2_io_t *dio; /* physical data buffer */ 320 hammer2_media_data_t *data; /* data pointer shortcut */ 321 u_int bytes; /* physical data size */ 322 u_int flags; 323 u_int refs; 324 u_int lockcnt; 325 int error; /* on-lock data error state */ 326 int cache_index; /* heur speeds up lookup */ 327 328 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 329 }; 330 331 typedef struct hammer2_chain hammer2_chain_t; 332 333 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 334 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 335 336 /* 337 * Special notes on flags: 338 * 339 * INITIAL - This flag allows a chain to be created and for storage to 340 * be allocated without having to immediately instantiate the 341 * related buffer. The data is assumed to be all-zeros. It 342 * is primarily used for indirect blocks. 343 * 344 * MODIFIED - The chain's media data has been modified. Prevents chain 345 * free on lastdrop if still in the topology. 346 * 347 * UPDATE - Chain might not be modified but parent blocktable needs 348 * an update. Prevents chain free on lastdrop if still in 349 * the topology. 350 * 351 * BMAPPED - Indicates that the chain is present in the parent blockmap. 352 * 353 * BMAPUPD - Indicates that the chain is present but needs to be updated 354 * in the parent blockmap. 355 */ 356 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 357 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 358 #define HAMMER2_CHAIN_DESTROY 0x00000004 359 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 360 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 361 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 362 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 363 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 364 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 365 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 366 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 367 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 368 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 369 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 370 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 371 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 372 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 373 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 374 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */ 375 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */ 376 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 377 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 378 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 379 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 380 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 381 382 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 383 HAMMER2_CHAIN_UPDATE | \ 384 HAMMER2_CHAIN_ONFLUSH | \ 385 HAMMER2_CHAIN_DESTROY) 386 387 /* 388 * Hammer2 error codes, used by chain->error and cluster->error. The error 389 * code is typically set on-lock unless no I/O was requested, and set on 390 * I/O otherwise. If set for a cluster it generally means that the cluster 391 * code could not find a valid copy to present. 392 * 393 * All H2 error codes are flags and can be accumulated by ORing them 394 * together. 395 * 396 * IO - An I/O error occurred 397 * CHECK - I/O succeeded but did not match the check code 398 * INCOMPLETE - A cluster is not complete enough to use, or 399 * a chain cannot be loaded because its parent has an error. 400 * 401 * NOTE: API allows callers to check zero/non-zero to determine if an error 402 * condition exists. 403 * 404 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 405 * NULL on other errors. Check chain->error, not chain->data. 406 */ 407 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 408 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 409 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 410 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 411 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 412 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 413 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 414 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 415 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 416 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 417 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 418 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 419 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 420 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 421 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 422 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 423 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 424 #define HAMMER2_ERROR_EDEADLK 0x00010000 425 #define HAMMER2_ERROR_ESRCH 0x00020000 426 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 427 428 /* 429 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 430 * 431 * NOTES: 432 * NODATA - Asks that the chain->data not be resolved in order 433 * to avoid I/O. 434 * 435 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 436 * the inode itself if the inode is in DIRECTDATA mode 437 * (i.e. file is <= 512 bytes). Used by the synchronization 438 * code to prevent confusion. 439 * 440 * SHARED - The input chain is expected to be locked shared, 441 * and the output chain is locked shared. 442 * 443 * MATCHIND - Allows an indirect block / freemap node to be returned 444 * when the passed key range matches the radix. Remember 445 * that key_end is inclusive (e.g. {0x000,0xFFF}, 446 * not {0x000,0x1000}). 447 * 448 * (Cannot be used for remote or cluster ops). 449 * 450 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 451 * missing, bulk file data is not resolved but inodes and 452 * other meta-data will. 453 */ 454 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 455 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 456 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 457 #define HAMMER2_LOOKUP_SHARED 0x00000100 458 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 459 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 460 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 461 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 462 463 /* 464 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 465 * 466 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 467 * blocks in the INITIAL-create state. 468 */ 469 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 470 471 /* 472 * Flags passed to hammer2_chain_lock() 473 * 474 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 475 * will be made to either the cluster being locked or any underlying 476 * cluster. It allows the cluster to lock and access data for a subset 477 * of available nodes instead of all available nodes. 478 * 479 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 480 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 481 * operation. 482 */ 483 #define HAMMER2_RESOLVE_NEVER 1 484 #define HAMMER2_RESOLVE_MAYBE 2 485 #define HAMMER2_RESOLVE_ALWAYS 3 486 #define HAMMER2_RESOLVE_MASK 0x0F 487 488 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 489 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 490 #define HAMMER2_RESOLVE_UNUSED40 0x40 491 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 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 * hammer2_freemap_adjust() 507 */ 508 #define HAMMER2_FREEMAP_DORECOVER 1 509 #define HAMMER2_FREEMAP_DOMAYFREE 2 510 #define HAMMER2_FREEMAP_DOREALFREE 3 511 512 /* 513 * HAMMER2 cluster - A set of chains representing the same entity. 514 * 515 * hammer2_cluster typically represents a temporary set of representitive 516 * chains. The one exception is that a hammer2_cluster is embedded in 517 * hammer2_inode. This embedded cluster is ONLY used to track the 518 * representitive chains and cannot be directly locked. 519 * 520 * A cluster is usually temporary (and thus per-thread) for locking purposes, 521 * allowing us to embed the asynchronous storage required for cluster 522 * operations in the cluster itself and adjust the state and status without 523 * having to worry too much about SMP issues. 524 * 525 * The exception is the cluster embedded in the hammer2_inode structure. 526 * This is used to cache the cluster state on an inode-by-inode basis. 527 * Individual hammer2_chain structures not incorporated into clusters might 528 * also stick around to cache miscellanious elements. 529 * 530 * Because the cluster is a 'working copy' and is usually subject to cluster 531 * quorum rules, it is quite possible for us to end up with an insufficient 532 * number of live chains to execute an operation. If an insufficient number 533 * of chains remain in a working copy, the operation may have to be 534 * downgraded, retried, stall until the requisit number of chains are 535 * available, or possibly even error out depending on the mount type. 536 * 537 * A cluster's focus is set when it is locked. The focus can only be set 538 * to a chain still part of the synchronized set. 539 */ 540 #define HAMMER2_XOPFIFO 16 541 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 542 #define HAMMER2_XOPGROUPS_MIN 32 543 544 #define HAMMER2_MAXCLUSTER 8 545 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 546 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 547 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 548 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 549 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 550 551 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 552 553 struct hammer2_cluster_item { 554 hammer2_chain_t *chain; 555 int error; 556 uint32_t flags; 557 }; 558 559 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 560 561 /* 562 * INVALID - Invalid for focus, i.e. not part of synchronized set. 563 * Once set, this bit is sticky across operations. 564 * 565 * FEMOD - Indicates that front-end modifying operations can 566 * mess with this entry and MODSYNC will copy also 567 * effect it. 568 */ 569 #define HAMMER2_CITEM_INVALID 0x00000001 570 #define HAMMER2_CITEM_FEMOD 0x00000002 571 #define HAMMER2_CITEM_NULL 0x00000004 572 573 struct hammer2_cluster { 574 int refs; /* track for deallocation */ 575 int ddflag; 576 struct hammer2_pfs *pmp; 577 uint32_t flags; 578 int nchains; 579 int error; /* error code valid on lock */ 580 int focus_index; 581 hammer2_chain_t *focus; /* current focus (or mod) */ 582 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 583 }; 584 585 typedef struct hammer2_cluster hammer2_cluster_t; 586 587 /* 588 * WRHARD - Hard mounts can write fully synchronized 589 * RDHARD - Hard mounts can read fully synchronized 590 * UNHARD - Unsynchronized masters present 591 * NOHARD - No masters visible 592 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 593 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 594 * UNSOFT - Unsynchronized slaves present 595 * NOSOFT - No slaves visible 596 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 597 * MSYNCED - All masters are fully synchronized 598 * SSYNCED - All known local slaves are fully synchronized to masters 599 * 600 * All available masters are always incorporated. All PFSs belonging to a 601 * cluster (master, slave, copy, whatever) always try to synchronize the 602 * total number of known masters in the PFSs root inode. 603 * 604 * A cluster might have access to many slaves, copies, or caches, but we 605 * have a limited number of cluster slots. Any such elements which are 606 * directly mounted from block device(s) will always be incorporated. Note 607 * that SSYNCED only applies to such elements which are directly mounted, 608 * not to any remote slaves, copies, or caches that could be available. These 609 * bits are used to monitor and drive our synchronization threads. 610 * 611 * When asking the question 'is any data accessible at all', then a simple 612 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 613 * these bits are set the object can be read with certain caveats: 614 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 615 * and RDSLAVE - not authoritative, has some data but it could be old or 616 * incomplete. 617 * 618 * When both soft and hard mounts are available, data will be read and written 619 * via the soft mount only. But all might be in the cluster because 620 * background synchronization threads still need to do their work. 621 */ 622 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 623 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 624 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 625 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 626 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 627 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 628 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 629 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 630 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 631 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 632 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 633 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 634 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 635 636 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 637 HAMMER2_CLUSTER_RDSOFT | \ 638 HAMMER2_CLUSTER_RDSLAVE) 639 640 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 641 HAMMER2_CLUSTER_RDSOFT) 642 643 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 644 HAMMER2_CLUSTER_WRSOFT) 645 646 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 647 HAMMER2_CLUSTER_RDHARD | \ 648 HAMMER2_CLUSTER_WRSOFT | \ 649 HAMMER2_CLUSTER_RDSOFT | \ 650 HAMMER2_CLUSTER_MSYNCED | \ 651 HAMMER2_CLUSTER_SSYNCED) 652 653 /* 654 * Helper functions (cluster must be locked for flags to be valid). 655 */ 656 static __inline 657 int 658 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 659 { 660 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 661 } 662 663 static __inline 664 int 665 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 666 { 667 return (cluster->flags & HAMMER2_CLUSTER_WROK); 668 } 669 670 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 671 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 672 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 673 674 struct hammer2_depend { 675 TAILQ_ENTRY(hammer2_depend) entry; 676 struct inoq_head sideq; 677 long count; 678 int pass2; 679 int unused01; 680 }; 681 682 typedef struct hammer2_depend hammer2_depend_t; 683 684 /* 685 * A hammer2 inode. 686 * 687 * NOTE: The inode-embedded cluster is never used directly for I/O (since 688 * it may be shared). Instead it will be replicated-in and synchronized 689 * back out if changed. 690 */ 691 struct hammer2_inode { 692 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 693 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 694 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 695 hammer2_depend_t depend_static; /* (in-place allocation) */ 696 hammer2_mtx_t lock; /* inode lock */ 697 hammer2_mtx_t truncate_lock; /* prevent truncates */ 698 struct hammer2_pfs *pmp; /* PFS mount */ 699 struct vnode *vp; 700 hammer2_spin_t cluster_spin; /* update cluster */ 701 hammer2_cluster_t cluster; 702 struct lockf advlock; 703 u_int flags; 704 u_int refs; /* +vpref, +flushref */ 705 uint8_t comp_heuristic; 706 hammer2_inode_meta_t meta; /* copy of meta-data */ 707 hammer2_off_t osize; 708 }; 709 710 typedef struct hammer2_inode hammer2_inode_t; 711 712 /* 713 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 714 * RESIZED - Inode truncated (any) or inode extended beyond 715 * EMBEDDED_BYTES. 716 * 717 * SYNCQ - Inode is included in the current filesystem sync. The 718 * DELETING and CREATING flags will be acted upon. 719 * 720 * SIDEQ - Inode has likely been disconnected from the vnode topology 721 * and so is not visible to the vnode-based filesystem syncer 722 * code, but is dirty and must be included in the next 723 * filesystem sync. These inodes are moved to the SYNCQ at 724 * the time the sync occurs. 725 * 726 * Inodes are not placed on this queue simply because they have 727 * become dirty, if a vnode is attached. 728 * 729 * DELETING - Inode is flagged for deletion during the next filesystem 730 * sync. That is, the inode's chain is currently connected 731 * and must be deleting during the current or next fs sync. 732 * 733 * CREATING - Inode is flagged for creation during the next filesystem 734 * sync. That is, the inode's chain topology exists (so 735 * kernel buffer flushes can occur), but is currently 736 * disconnected and must be inserted during the current or 737 * next fs sync. If the DELETING flag is also set, the 738 * topology can be thrown away instead. 739 * 740 * If an inode that is already part of the current filesystem sync is 741 * modified by the frontend, including by buffer flushes, the inode lock 742 * code detects the SYNCQ flag and moves the inode to the head of the 743 * flush-in-progress, then blocks until the flush has gotten past it. 744 */ 745 #define HAMMER2_INODE_MODIFIED 0x0001 746 #define HAMMER2_INODE_SROOT 0x0002 747 #define HAMMER2_INODE_UNUSED0004 0x0004 748 #define HAMMER2_INODE_ONRBTREE 0x0008 749 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 750 #define HAMMER2_INODE_UNUSED0020 0x0020 751 #define HAMMER2_INODE_ISUNLINKED 0x0040 752 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 753 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 754 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 755 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 756 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 757 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 758 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 759 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 760 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 761 762 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 763 HAMMER2_INODE_DIRTYDATA | \ 764 HAMMER2_INODE_DELETING | \ 765 HAMMER2_INODE_CREATING) 766 767 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 768 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 769 hammer2_tid_t); 770 771 /* 772 * Transaction management sub-structure under hammer2_pfs 773 */ 774 struct hammer2_trans { 775 uint32_t flags; 776 uint32_t sync_wait; 777 }; 778 779 typedef struct hammer2_trans hammer2_trans_t; 780 781 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 782 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 783 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 784 #define HAMMER2_TRANS_UNUSED10 0x10000000 785 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 786 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 787 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 788 789 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 790 #define HAMMER2_FREEMAP_HEUR_TYPES 8 791 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 792 HAMMER2_FREEMAP_HEUR_TYPES) 793 794 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 795 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 796 797 #define HAMMER2_FLUSH_TOP 0x0001 798 #define HAMMER2_FLUSH_ALL 0x0002 799 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 800 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 801 802 803 /* 804 * Hammer2 support thread element. 805 * 806 * Potentially many support threads can hang off of hammer2, primarily 807 * off the hammer2_pfs structure. Typically: 808 * 809 * td x Nodes A synchronization thread for each node. 810 * td x Nodes x workers Worker threads for frontend operations. 811 * td x 1 Bioq thread for logical buffer writes. 812 * 813 * In addition, the synchronization thread(s) associated with the 814 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 815 * and dedup scans. 816 */ 817 struct hammer2_thread { 818 struct hammer2_pfs *pmp; 819 struct hammer2_dev *hmp; 820 hammer2_xop_list_t xopq; 821 thread_t td; 822 uint32_t flags; 823 int depth; 824 int clindex; /* cluster element index */ 825 int repidx; 826 char *scratch; /* MAXPHYS */ 827 }; 828 829 typedef struct hammer2_thread hammer2_thread_t; 830 831 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 832 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 833 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 834 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 835 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 836 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 837 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 838 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 839 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 840 #define HAMMER2_THREAD_UNFREEZE 0x0200 841 842 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 843 HAMMER2_THREAD_REMASTER | \ 844 HAMMER2_THREAD_STOP | \ 845 HAMMER2_THREAD_FREEZE | \ 846 HAMMER2_THREAD_XOPQ) 847 848 /* 849 * Support structure for dedup heuristic. 850 */ 851 struct hammer2_dedup { 852 hammer2_off_t data_off; 853 uint64_t data_crc; 854 uint32_t ticks; 855 uint32_t saved_error; 856 }; 857 858 typedef struct hammer2_dedup hammer2_dedup_t; 859 860 /* 861 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 862 * 863 * This structure is used to distribute a VOP operation across multiple 864 * nodes. It provides a rendezvous for concurrent node execution and 865 * can be detached from the frontend operation to allow the frontend to 866 * return early. 867 * 868 * This structure also sequences operations on up to three inodes. 869 */ 870 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 871 int clindex); 872 873 struct hammer2_xop_desc { 874 hammer2_xop_func_t storage_func; /* local storage function */ 875 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 876 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 877 const char *id; 878 }; 879 880 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 881 882 struct hammer2_xop_fifo { 883 TAILQ_ENTRY(hammer2_xop_head) entry; 884 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 885 int errors[HAMMER2_XOPFIFO]; 886 int ri; 887 int wi; 888 int flags; 889 hammer2_thread_t *thr; 890 }; 891 892 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 893 894 #define HAMMER2_XOP_FIFO_RUN 0x0001 895 #define HAMMER2_XOP_FIFO_STALL 0x0002 896 897 struct hammer2_xop_head { 898 hammer2_xop_desc_t *desc; 899 hammer2_tid_t mtid; 900 struct hammer2_inode *ip1; 901 struct hammer2_inode *ip2; 902 struct hammer2_inode *ip3; 903 struct hammer2_inode *ip4; 904 uint64_t run_mask; 905 uint64_t chk_mask; 906 int flags; 907 int state; 908 int error; 909 hammer2_key_t collect_key; 910 char *name1; 911 size_t name1_len; 912 char *name2; 913 size_t name2_len; 914 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 915 hammer2_cluster_t cluster; /* help collections */ 916 hammer2_io_t *focus_dio; 917 }; 918 919 typedef struct hammer2_xop_head hammer2_xop_head_t; 920 921 struct hammer2_xop_ipcluster { 922 hammer2_xop_head_t head; 923 }; 924 925 struct hammer2_xop_strategy { 926 hammer2_xop_head_t head; 927 hammer2_key_t lbase; 928 int finished; 929 hammer2_mtx_t lock; 930 struct bio *bio; 931 }; 932 933 struct hammer2_xop_readdir { 934 hammer2_xop_head_t head; 935 hammer2_key_t lkey; 936 }; 937 938 struct hammer2_xop_nresolve { 939 hammer2_xop_head_t head; 940 hammer2_key_t lhc; /* if name is NULL used lhc */ 941 }; 942 943 struct hammer2_xop_unlink { 944 hammer2_xop_head_t head; 945 int isdir; 946 int dopermanent; 947 }; 948 949 #define H2DOPERM_PERMANENT 0x01 950 #define H2DOPERM_FORCE 0x02 951 #define H2DOPERM_IGNINO 0x04 952 953 struct hammer2_xop_nrename { 954 hammer2_xop_head_t head; 955 hammer2_tid_t lhc; 956 int ip_key; 957 }; 958 959 struct hammer2_xop_scanlhc { 960 hammer2_xop_head_t head; 961 hammer2_key_t lhc; 962 }; 963 964 struct hammer2_xop_scanall { 965 hammer2_xop_head_t head; 966 hammer2_key_t key_beg; /* inclusive */ 967 hammer2_key_t key_end; /* inclusive */ 968 int resolve_flags; 969 int lookup_flags; 970 }; 971 972 struct hammer2_xop_lookup { 973 hammer2_xop_head_t head; 974 hammer2_key_t lhc; 975 }; 976 977 struct hammer2_xop_mkdirent { 978 hammer2_xop_head_t head; 979 hammer2_dirent_head_t dirent; 980 hammer2_key_t lhc; 981 }; 982 983 struct hammer2_xop_create { 984 hammer2_xop_head_t head; 985 hammer2_inode_meta_t meta; /* initial metadata */ 986 hammer2_key_t lhc; 987 int flags; 988 }; 989 990 struct hammer2_xop_destroy { 991 hammer2_xop_head_t head; 992 }; 993 994 struct hammer2_xop_fsync { 995 hammer2_xop_head_t head; 996 hammer2_inode_meta_t meta; 997 hammer2_off_t osize; 998 u_int ipflags; 999 int clear_directdata; 1000 }; 1001 1002 struct hammer2_xop_unlinkall { 1003 hammer2_xop_head_t head; 1004 hammer2_key_t key_beg; 1005 hammer2_key_t key_end; 1006 }; 1007 1008 struct hammer2_xop_connect { 1009 hammer2_xop_head_t head; 1010 hammer2_key_t lhc; 1011 }; 1012 1013 struct hammer2_xop_flush { 1014 hammer2_xop_head_t head; 1015 }; 1016 1017 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1018 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1019 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1020 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1021 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1022 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1023 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1024 typedef struct hammer2_xop_create hammer2_xop_create_t; 1025 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1026 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1027 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1028 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1029 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1030 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1031 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1032 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1033 1034 union hammer2_xop { 1035 hammer2_xop_head_t head; 1036 hammer2_xop_ipcluster_t xop_ipcluster; 1037 hammer2_xop_readdir_t xop_readdir; 1038 hammer2_xop_nresolve_t xop_nresolve; 1039 hammer2_xop_unlink_t xop_unlink; 1040 hammer2_xop_nrename_t xop_nrename; 1041 hammer2_xop_strategy_t xop_strategy; 1042 hammer2_xop_mkdirent_t xop_mkdirent; 1043 hammer2_xop_create_t xop_create; 1044 hammer2_xop_destroy_t xop_destroy; 1045 hammer2_xop_fsync_t xop_fsync; 1046 hammer2_xop_unlinkall_t xop_unlinkall; 1047 hammer2_xop_scanlhc_t xop_scanlhc; 1048 hammer2_xop_scanall_t xop_scanall; 1049 hammer2_xop_lookup_t xop_lookup; 1050 hammer2_xop_flush_t xop_flush; 1051 hammer2_xop_connect_t xop_connect; 1052 }; 1053 1054 typedef union hammer2_xop hammer2_xop_t; 1055 1056 /* 1057 * hammer2_xop_group - Manage XOP support threads. 1058 */ 1059 struct hammer2_xop_group { 1060 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1061 }; 1062 1063 typedef struct hammer2_xop_group hammer2_xop_group_t; 1064 1065 /* 1066 * flags to hammer2_xop_collect() 1067 */ 1068 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1069 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1070 1071 /* 1072 * flags to hammer2_xop_alloc() 1073 * 1074 * MODIFYING - This is a modifying transaction, allocate a mtid. 1075 * RECURSE - Recurse top-level inode (for root flushes) 1076 */ 1077 #define HAMMER2_XOP_MODIFYING 0x00000001 1078 #define HAMMER2_XOP_STRATEGY 0x00000002 1079 #define HAMMER2_XOP_INODE_STOP 0x00000004 1080 #define HAMMER2_XOP_VOLHDR 0x00000008 1081 #define HAMMER2_XOP_FSSYNC 0x00000010 1082 #define HAMMER2_XOP_IROOT 0x00000020 1083 1084 /* 1085 * Device vnode management structure 1086 */ 1087 struct hammer2_devvp { 1088 TAILQ_ENTRY(hammer2_devvp) entry; 1089 struct vnode *devvp; /* device vnode */ 1090 char *path; /* device vnode path */ 1091 int open; /* 1 if devvp open */ 1092 }; 1093 1094 typedef struct hammer2_devvp hammer2_devvp_t; 1095 1096 TAILQ_HEAD(hammer2_devvp_list, hammer2_devvp); 1097 1098 typedef struct hammer2_devvp_list hammer2_devvp_list_t; 1099 1100 /* 1101 * Volume management structure 1102 */ 1103 struct hammer2_volume { 1104 hammer2_devvp_t *dev; /* device vnode management */ 1105 int id; /* volume id */ 1106 hammer2_off_t offset; /* offset within volumes */ 1107 hammer2_off_t size; /* volume size */ 1108 }; 1109 1110 typedef struct hammer2_volume hammer2_volume_t; 1111 1112 /* 1113 * Global (per partition) management structure, represents a hard block 1114 * device. Typically referenced by hammer2_chain structures when applicable. 1115 * Typically not used for network-managed elements. 1116 * 1117 * Note that a single hammer2_dev can be indirectly tied to multiple system 1118 * mount points. There is no direct relationship. System mounts are 1119 * per-cluster-id, not per-block-device, and a single hard mount might contain 1120 * many PFSs and those PFSs might combine together in various ways to form 1121 * the set of available clusters. 1122 */ 1123 struct hammer2_dev { 1124 struct vnode *devvp; /* device vnode for root volume */ 1125 int ronly; /* read-only mount */ 1126 int mount_count; /* number of actively mounted PFSs */ 1127 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1128 1129 struct malloc_type *mchain_obj; 1130 struct malloc_type *mio_obj; 1131 struct malloc_type *mmsg; 1132 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1133 hammer2_spin_t io_spin; /* iotree, iolruq access */ 1134 struct hammer2_io_tree iotree; 1135 int iofree_count; 1136 int freemap_relaxed; 1137 hammer2_chain_t vchain; /* anchor chain (topology) */ 1138 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1139 hammer2_spin_t list_spin; 1140 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1141 struct lock vollk; /* lockmgr lock */ 1142 struct lock bulklk; /* bulkfree operation lock */ 1143 struct lock bflock; /* bulk-free manual function lock */ 1144 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1145 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1146 int volhdrno; /* last volhdrno written */ 1147 uint32_t hflags; /* HMNT2 flags applicable to device */ 1148 hammer2_off_t free_reserved; /* nominal free reserved */ 1149 hammer2_off_t total_size; /* total size of volumes */ 1150 int nvolumes; /* total number of volumes */ 1151 hammer2_thread_t bfthr; /* bulk-free thread */ 1152 char devrepname[64]; /* for kprintf */ 1153 hammer2_volume_data_t voldata; 1154 hammer2_volume_data_t volsync; /* synchronized voldata */ 1155 1156 hammer2_devvp_list_t devvpl; /* list of device vnodes including *devvp */ 1157 hammer2_volume_t volumes[HAMMER2_MAX_VOLUMES]; /* list of volumes */ 1158 }; 1159 1160 typedef struct hammer2_dev hammer2_dev_t; 1161 1162 /* 1163 * Helper functions (cluster must be locked for flags to be valid). 1164 */ 1165 static __inline 1166 int 1167 hammer2_chain_rdok(hammer2_chain_t *chain) 1168 { 1169 return (chain->error == 0); 1170 } 1171 1172 static __inline 1173 int 1174 hammer2_chain_wrok(hammer2_chain_t *chain) 1175 { 1176 return (chain->error == 0 && chain->hmp->ronly == 0); 1177 } 1178 1179 /* 1180 * Per-cluster management structure. This structure will be tied to a 1181 * system mount point if the system is mounting the PFS, but is also used 1182 * to manage clusters encountered during the super-root scan or received 1183 * via LNK_SPANs that might not be mounted. 1184 * 1185 * This structure is also used to represent the super-root that hangs off 1186 * of a hard mount point. The super-root is not really a cluster element. 1187 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1188 * this than to special case super-root manipulation in the hammer2_chain* 1189 * code as being only hammer2_dev-related. 1190 * 1191 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1192 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1193 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1194 * how many masters have been configured for a cluster and is always 1195 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1196 * iroot cluster and describes the PFS types of the nodes making up the 1197 * cluster. 1198 * 1199 * WARNING! Portions of this structure have deferred initialization. In 1200 * particular, if not mounted there will be no wthread. 1201 * umounted network PFSs will also be missing iroot and numerous 1202 * other fields will not be initialized prior to mount. 1203 * 1204 * Synchronization threads are chain-specific and only applicable 1205 * to local hard PFS entries. A hammer2_pfs structure may contain 1206 * more than one when multiple hard PFSs are present on the local 1207 * machine which require synchronization monitoring. Most PFSs 1208 * (such as snapshots) are 1xMASTER PFSs which do not need a 1209 * synchronization thread. 1210 * 1211 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1212 * hammer2_dev->mount_count when the pfs is associated with a mount 1213 * point. 1214 */ 1215 struct hammer2_pfs { 1216 struct mount *mp; 1217 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1218 uuid_t pfs_clid; 1219 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1220 hammer2_dev_t *force_local; /* only if 'local' mount */ 1221 hammer2_inode_t *iroot; /* PFS root inode */ 1222 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1223 char *pfs_names[HAMMER2_MAXCLUSTER]; 1224 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1225 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1226 hammer2_trans_t trans; 1227 struct lock lock; /* PFS lock for certain ops */ 1228 struct lock lock_nlink; /* rename and nlink lock */ 1229 struct netexport export; /* nfs export */ 1230 int unused00; 1231 int ronly; /* read-only mount */ 1232 int hflags; /* pfs-specific mount flags */ 1233 struct malloc_type *minode_obj; 1234 hammer2_spin_t inum_spin; /* inumber lookup */ 1235 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1236 long inum_count; /* #of inodes in inum_tree */ 1237 hammer2_spin_t lru_spin; /* inumber lookup */ 1238 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1239 int lru_count; /* #of chains on LRU */ 1240 int flags; 1241 hammer2_tid_t modify_tid; /* modify transaction id */ 1242 hammer2_tid_t inode_tid; /* inode allocator */ 1243 uint8_t pfs_nmasters; /* total masters */ 1244 uint8_t pfs_mode; /* operating mode PFSMODE */ 1245 uint8_t unused01; 1246 uint8_t unused02; 1247 int free_ticks; /* free_* calculations */ 1248 long inmem_inodes; 1249 hammer2_off_t free_reserved; 1250 hammer2_off_t free_nominal; 1251 uint32_t inmem_dirty_chains; 1252 int count_lwinprog; /* logical write in prog */ 1253 hammer2_spin_t list_spin; 1254 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1255 struct depq_head depq; /* SIDEQ flagged inodes */ 1256 long sideq_count; /* total inodes on depq */ 1257 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1258 uint32_t cluster_flags; /* cached cluster flags */ 1259 int has_xop_threads; 1260 hammer2_spin_t xop_spin; /* xop sequencer */ 1261 hammer2_xop_group_t *xop_groups; 1262 }; 1263 1264 typedef struct hammer2_pfs hammer2_pfs_t; 1265 1266 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1267 1268 /* 1269 * pmp->flags 1270 */ 1271 #define HAMMER2_PMPF_SPMP 0x00000001 1272 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1273 1274 /* 1275 * NOTE: The LRU list contains at least all the chains with refs == 0 1276 * that can be recycled, and may contain additional chains which 1277 * cannot. 1278 */ 1279 #define HAMMER2_LRU_LIMIT 4096 1280 1281 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1282 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1283 1284 #define HAMMER2_LWINPROG_WAITING 0x80000000 1285 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1286 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1287 1288 /* 1289 * hammer2_cluster_check 1290 */ 1291 #define HAMMER2_CHECK_NULL 0x00000001 1292 1293 /* 1294 * Misc 1295 */ 1296 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1297 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1298 #endif 1299 1300 #if defined(_KERNEL) 1301 1302 #ifdef MALLOC_DECLARE 1303 MALLOC_DECLARE(M_HAMMER2); 1304 #endif 1305 1306 static __inline 1307 hammer2_pfs_t * 1308 MPTOPMP(struct mount *mp) 1309 { 1310 return ((hammer2_pfs_t *)mp->mnt_data); 1311 } 1312 1313 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1314 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1315 1316 static __inline 1317 uint64_t 1318 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1319 { 1320 int bbeg; 1321 int bits; 1322 uint64_t mask; 1323 1324 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1325 HAMMER2_DEDUP_FRAGRADIX; 1326 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1327 HAMMER2_DEDUP_FRAGRADIX); 1328 mask = ((uint64_t)1 << bbeg) - 1; 1329 if (bbeg + bits == 64) 1330 mask = (uint64_t)-1; 1331 else 1332 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1333 1334 mask &= ~(((uint64_t)1 << bbeg) - 1); 1335 1336 return mask; 1337 } 1338 1339 static __inline 1340 int 1341 hammer2_error_to_errno(int error) 1342 { 1343 if (error) { 1344 if (error & HAMMER2_ERROR_EIO) 1345 error = EIO; 1346 else if (error & HAMMER2_ERROR_CHECK) 1347 error = EDOM; 1348 else if (error & HAMMER2_ERROR_ABORTED) 1349 error = EINTR; 1350 else if (error & HAMMER2_ERROR_BADBREF) 1351 error = EIO; 1352 else if (error & HAMMER2_ERROR_ENOSPC) 1353 error = ENOSPC; 1354 else if (error & HAMMER2_ERROR_ENOENT) 1355 error = ENOENT; 1356 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1357 error = ENOTEMPTY; 1358 else if (error & HAMMER2_ERROR_EAGAIN) 1359 error = EAGAIN; 1360 else if (error & HAMMER2_ERROR_ENOTDIR) 1361 error = ENOTDIR; 1362 else if (error & HAMMER2_ERROR_EISDIR) 1363 error = EISDIR; 1364 else if (error & HAMMER2_ERROR_EINPROGRESS) 1365 error = EINPROGRESS; 1366 else if (error & HAMMER2_ERROR_EEXIST) 1367 error = EEXIST; 1368 else if (error & HAMMER2_ERROR_EINVAL) 1369 error = EINVAL; 1370 else if (error & HAMMER2_ERROR_EDEADLK) 1371 error = EDEADLK; 1372 else if (error & HAMMER2_ERROR_ESRCH) 1373 error = ESRCH; 1374 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1375 error = ETIMEDOUT; 1376 else 1377 error = EDOM; 1378 } 1379 return error; 1380 } 1381 1382 static __inline 1383 int 1384 hammer2_errno_to_error(int error) 1385 { 1386 switch(error) { 1387 case 0: 1388 return 0; 1389 case EIO: 1390 return HAMMER2_ERROR_EIO; 1391 case EDOM: 1392 return HAMMER2_ERROR_CHECK; 1393 case EINTR: 1394 return HAMMER2_ERROR_ABORTED; 1395 //case EIO: 1396 // return HAMMER2_ERROR_BADBREF; 1397 case ENOSPC: 1398 return HAMMER2_ERROR_ENOSPC; 1399 case ENOENT: 1400 return HAMMER2_ERROR_ENOENT; 1401 case ENOTEMPTY: 1402 return HAMMER2_ERROR_ENOTEMPTY; 1403 case EAGAIN: 1404 return HAMMER2_ERROR_EAGAIN; 1405 case ENOTDIR: 1406 return HAMMER2_ERROR_ENOTDIR; 1407 case EISDIR: 1408 return HAMMER2_ERROR_EISDIR; 1409 case EINPROGRESS: 1410 return HAMMER2_ERROR_EINPROGRESS; 1411 case EEXIST: 1412 return HAMMER2_ERROR_EEXIST; 1413 case EINVAL: 1414 return HAMMER2_ERROR_EINVAL; 1415 case EDEADLK: 1416 return HAMMER2_ERROR_EDEADLK; 1417 case ESRCH: 1418 return HAMMER2_ERROR_ESRCH; 1419 case ETIMEDOUT: 1420 return HAMMER2_ERROR_ETIMEDOUT; 1421 default: 1422 return HAMMER2_ERROR_EINVAL; 1423 } 1424 } 1425 1426 1427 extern struct vop_ops hammer2_vnode_vops; 1428 extern struct vop_ops hammer2_spec_vops; 1429 extern struct vop_ops hammer2_fifo_vops; 1430 extern struct hammer2_pfslist hammer2_pfslist; 1431 extern struct lock hammer2_mntlk; 1432 1433 1434 extern int hammer2_debug; 1435 extern int hammer2_xopgroups; 1436 extern long hammer2_debug_inode; 1437 extern int hammer2_cluster_meta_read; 1438 extern int hammer2_cluster_data_read; 1439 extern int hammer2_cluster_write; 1440 extern int hammer2_dedup_enable; 1441 extern int hammer2_always_compress; 1442 extern int hammer2_flush_pipe; 1443 extern int hammer2_dio_count; 1444 extern int hammer2_dio_limit; 1445 extern int hammer2_bulkfree_tps; 1446 extern int hammer2_worker_rmask; 1447 extern long hammer2_chain_allocs; 1448 extern long hammer2_limit_dirty_chains; 1449 extern long hammer2_limit_dirty_inodes; 1450 extern long hammer2_count_modified_chains; 1451 extern long hammer2_iod_file_read; 1452 extern long hammer2_iod_meta_read; 1453 extern long hammer2_iod_indr_read; 1454 extern long hammer2_iod_fmap_read; 1455 extern long hammer2_iod_volu_read; 1456 extern long hammer2_iod_file_write; 1457 extern long hammer2_iod_file_wembed; 1458 extern long hammer2_iod_file_wzero; 1459 extern long hammer2_iod_file_wdedup; 1460 extern long hammer2_iod_meta_write; 1461 extern long hammer2_iod_indr_write; 1462 extern long hammer2_iod_fmap_write; 1463 extern long hammer2_iod_volu_write; 1464 1465 extern long hammer2_process_icrc32; 1466 extern long hammer2_process_xxhash64; 1467 1468 extern struct objcache *cache_buffer_read; 1469 extern struct objcache *cache_buffer_write; 1470 extern struct objcache *cache_xops; 1471 1472 /* 1473 * hammer2_subr.c 1474 */ 1475 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1476 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1477 1478 int hammer2_signal_check(time_t *timep); 1479 const char *hammer2_error_str(int error); 1480 const char *hammer2_bref_type_str(int btype); 1481 1482 int hammer2_get_dtype(uint8_t type); 1483 int hammer2_get_vtype(uint8_t type); 1484 uint8_t hammer2_get_obj_type(enum vtype vtype); 1485 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1486 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1487 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1488 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1489 1490 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1491 int hammer2_getradix(size_t bytes); 1492 1493 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1494 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1495 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1496 void hammer2_update_time(uint64_t *timep); 1497 void hammer2_adjreadcounter(int btype, size_t bytes); 1498 void hammer2_adjwritecounter(int btype, size_t bytes); 1499 1500 /* 1501 * hammer2_inode.c 1502 */ 1503 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1504 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1505 hammer2_tid_t inum); 1506 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1507 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1508 void hammer2_inode_ref(hammer2_inode_t *ip); 1509 void hammer2_inode_drop(hammer2_inode_t *ip); 1510 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1511 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1512 int idx); 1513 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1514 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1515 void hammer2_inode_modify(hammer2_inode_t *ip); 1516 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1517 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1518 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1519 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1520 void hammer2_inode_unlock(hammer2_inode_t *ip); 1521 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1522 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1523 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1524 int clindex, hammer2_chain_t **parentp, int how); 1525 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1526 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1527 hammer2_mtx_state_t ostate); 1528 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1529 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1530 1531 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1532 struct vattr *vap, struct ucred *cred, 1533 hammer2_key_t inum, int *errorp); 1534 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1535 const uint8_t *name, size_t name_len, 1536 int *errorp); 1537 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1538 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1539 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1540 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1541 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1542 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1543 size_t name_len, hammer2_key_t inum, uint8_t type); 1544 1545 /* 1546 * hammer2_chain.c 1547 */ 1548 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1549 hammer2_pfs_t *pmp, 1550 hammer2_blockref_t *bref); 1551 void hammer2_chain_core_init(hammer2_chain_t *chain); 1552 void hammer2_chain_ref(hammer2_chain_t *chain); 1553 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1554 void hammer2_chain_drop(hammer2_chain_t *chain); 1555 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1556 void hammer2_chain_unhold(hammer2_chain_t *chain); 1557 void hammer2_chain_rehold(hammer2_chain_t *chain); 1558 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1559 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1560 void hammer2_chain_load_data(hammer2_chain_t *chain); 1561 1562 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1563 int clindex, int flags, 1564 hammer2_chain_t **parentp, 1565 hammer2_chain_t **chainp); 1566 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1567 hammer2_off_t dedup_off, int flags); 1568 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1569 hammer2_tid_t mtid, int flags); 1570 int hammer2_chain_resize(hammer2_chain_t *chain, 1571 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1572 int nradix, int flags); 1573 void hammer2_chain_unlock(hammer2_chain_t *chain); 1574 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1575 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1576 hammer2_blockref_t *bref, int how); 1577 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1578 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1579 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1580 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1581 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1582 hammer2_key_t *key_nextp, 1583 hammer2_key_t key_beg, hammer2_key_t key_end, 1584 int *errorp, int flags); 1585 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1586 hammer2_chain_t *chain, 1587 hammer2_key_t *key_nextp, 1588 hammer2_key_t key_beg, hammer2_key_t key_end, 1589 int *errorp, int flags); 1590 int hammer2_chain_scan(hammer2_chain_t *parent, 1591 hammer2_chain_t **chainp, 1592 hammer2_blockref_t *bref, 1593 int *firstp, int flags); 1594 1595 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1596 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1597 int methods, hammer2_key_t key, int keybits, 1598 int type, size_t bytes, hammer2_tid_t mtid, 1599 hammer2_off_t dedup_off, int flags); 1600 void hammer2_chain_rename(hammer2_chain_t **parentp, 1601 hammer2_chain_t *chain, 1602 hammer2_tid_t mtid, int flags); 1603 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1604 hammer2_tid_t mtid, int flags); 1605 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1606 hammer2_chain_t *chain); 1607 void hammer2_chain_setflush(hammer2_chain_t *chain); 1608 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1609 hammer2_blockref_t *base, int count); 1610 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1611 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1612 1613 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1614 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1615 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1616 size_t name_len); 1617 1618 void hammer2_base_delete(hammer2_chain_t *parent, 1619 hammer2_blockref_t *base, int count, 1620 hammer2_chain_t *chain, 1621 hammer2_blockref_t *obref); 1622 void hammer2_base_insert(hammer2_chain_t *parent, 1623 hammer2_blockref_t *base, int count, 1624 hammer2_chain_t *chain, 1625 hammer2_blockref_t *elm); 1626 1627 /* 1628 * hammer2_flush.c 1629 */ 1630 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1631 int hammer2_flush(hammer2_chain_t *chain, int istop); 1632 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1633 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1634 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1635 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1636 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1637 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1638 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1639 1640 /* 1641 * hammer2_ioctl.c 1642 */ 1643 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1644 int fflag, struct ucred *cred); 1645 1646 /* 1647 * hammer2_io.c 1648 */ 1649 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1650 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1651 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1652 void hammer2_io_bkvasync(hammer2_io_t *dio); 1653 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1654 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1655 hammer2_off_t data_off, u_int bytes); 1656 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1657 u_int bytes); 1658 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1659 hammer2_io_t **diop); 1660 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1661 hammer2_io_t **diop); 1662 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1663 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1664 void hammer2_io_setdirty(hammer2_io_t *dio); 1665 1666 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1667 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1668 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1669 int lsize HAMMER2_IO_DEBUG_ARGS); 1670 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1671 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1672 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1673 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1674 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1675 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1676 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1677 1678 #ifndef HAMMER2_IO_DEBUG 1679 1680 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1681 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1682 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1683 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1684 #define hammer2_io_putblk(diop) \ 1685 _hammer2_io_putblk(diop) 1686 #define hammer2_io_bwrite(diop) \ 1687 _hammer2_io_bwrite((diop)) 1688 #define hammer2_io_bawrite(diop) \ 1689 _hammer2_io_bawrite((diop)) 1690 #define hammer2_io_bdwrite(diop) \ 1691 _hammer2_io_bdwrite((diop)) 1692 #define hammer2_io_brelse(diop) \ 1693 _hammer2_io_brelse((diop)) 1694 #define hammer2_io_bqrelse(diop) \ 1695 _hammer2_io_bqrelse((diop)) 1696 #define hammer2_io_ref(dio) \ 1697 _hammer2_io_ref((dio)) 1698 1699 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1700 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1701 1702 #else 1703 1704 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1705 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1706 __FILE__, __LINE__) 1707 1708 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1709 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1710 1711 #define hammer2_io_putblk(diop) \ 1712 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1713 1714 #define hammer2_io_bwrite(diop) \ 1715 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1716 #define hammer2_io_bawrite(diop) \ 1717 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1718 #define hammer2_io_bdwrite(diop) \ 1719 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1720 #define hammer2_io_brelse(diop) \ 1721 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1722 #define hammer2_io_bqrelse(diop) \ 1723 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1724 #define hammer2_io_ref(dio) \ 1725 _hammer2_io_ref((dio), __FILE__, __LINE__) 1726 1727 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1728 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1729 __FILE__, __LINE__) 1730 1731 #endif 1732 1733 /* 1734 * hammer2_admin.c 1735 */ 1736 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1737 void hammer2_thr_signal2(hammer2_thread_t *thr, 1738 uint32_t pflags, uint32_t nflags); 1739 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1740 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1741 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1742 void hammer2_thr_create(hammer2_thread_t *thr, 1743 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1744 const char *id, int clindex, int repidx, 1745 void (*func)(void *arg)); 1746 void hammer2_thr_delete(hammer2_thread_t *thr); 1747 void hammer2_thr_remaster(hammer2_thread_t *thr); 1748 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1749 void hammer2_thr_freeze(hammer2_thread_t *thr); 1750 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1751 int hammer2_thr_break(hammer2_thread_t *thr); 1752 void hammer2_primary_xops_thread(void *arg); 1753 1754 /* 1755 * hammer2_thread.c (XOP API) 1756 */ 1757 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1758 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1759 const char *name, size_t name_len); 1760 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1761 const char *name, size_t name_len); 1762 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1763 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1764 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1765 void hammer2_xop_setip4(hammer2_xop_head_t *xop, hammer2_inode_t *ip4); 1766 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1767 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1768 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1769 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1770 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1771 int notidx); 1772 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1773 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1774 int hammer2_xop_active(hammer2_xop_head_t *xop); 1775 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1776 int clindex, int error); 1777 1778 /* 1779 * hammer2_synchro.c 1780 */ 1781 void hammer2_primary_sync_thread(void *arg); 1782 1783 /* 1784 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1785 * may be integrated into other source files. 1786 */ 1787 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1788 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1789 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1790 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1791 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1792 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1793 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1794 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1795 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1796 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1797 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1798 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1799 void *scratch, int clindex); 1800 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1801 void *scratch, int clindex); 1802 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1803 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1804 int clindex); 1805 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1806 int clindex); 1807 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1808 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1809 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1810 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1811 1812 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1813 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1814 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1815 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1816 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1817 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1818 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1819 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1820 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1821 int clindex); 1822 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1823 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1824 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1825 int clindex); 1826 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1827 int clindex); 1828 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1829 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1830 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1831 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1832 int clindex); 1833 1834 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1835 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1836 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1837 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1843 int clindex); 1844 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1845 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1847 int clindex); 1848 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1849 int clindex); 1850 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1851 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1852 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1853 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1854 int clindex); 1855 1856 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1857 extern hammer2_xop_desc_t hammer2_readdir_desc; 1858 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1859 extern hammer2_xop_desc_t hammer2_unlink_desc; 1860 extern hammer2_xop_desc_t hammer2_nrename_desc; 1861 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1862 extern hammer2_xop_desc_t hammer2_scanall_desc; 1863 extern hammer2_xop_desc_t hammer2_lookup_desc; 1864 extern hammer2_xop_desc_t hammer2_delete_desc; 1865 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1866 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1867 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1868 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1869 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1870 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1871 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1872 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1873 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1874 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1875 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1876 1877 /* 1878 * hammer2_msgops.c 1879 */ 1880 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1881 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1882 1883 /* 1884 * hammer2_vfsops.c 1885 */ 1886 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1887 char pfx, u_int flags); 1888 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1889 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1890 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1891 1892 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1893 const hammer2_inode_data_t *ripdata, 1894 hammer2_tid_t modify_tid, 1895 hammer2_dev_t *force_local); 1896 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1897 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1898 ino_t ino, struct vnode **vpp); 1899 1900 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1901 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1902 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1903 1904 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1905 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1906 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1907 1908 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1909 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1910 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1911 1912 /* 1913 * hammer2_freemap.c 1914 */ 1915 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1916 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1917 hammer2_blockref_t *bref, int how); 1918 1919 /* 1920 * hammer2_cluster.c 1921 */ 1922 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1923 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1924 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1925 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1926 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1927 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1928 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1929 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1930 int flags); 1931 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1932 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1933 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1934 1935 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1936 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1937 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1938 struct hammer2_ioc_bulkfree *bfi); 1939 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1940 hammer2_chain_t *chain); 1941 1942 /* 1943 * hammer2_iocom.c 1944 */ 1945 void hammer2_iocom_init(hammer2_dev_t *hmp); 1946 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1947 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1948 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1949 1950 /* 1951 * hammer2_strategy.c 1952 */ 1953 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1954 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1955 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1956 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1957 const char *data); 1958 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1959 1960 /* 1961 * hammer2_ondisk.c 1962 */ 1963 int hammer2_open_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1964 int hammer2_close_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1965 int hammer2_init_devvp(const char *blkdevs, int rootmount, 1966 hammer2_devvp_list_t *devvpl); 1967 void hammer2_cleanup_devvp(hammer2_devvp_list_t *devvpl); 1968 int hammer2_init_volumes(struct mount *mp, const hammer2_devvp_list_t *devvpl, 1969 hammer2_volume_t *volumes, 1970 hammer2_volume_data_t *rootvoldata, 1971 struct vnode **rootvoldevvp); 1972 hammer2_volume_t *hammer2_get_volume(hammer2_dev_t *hmp, hammer2_off_t offset); 1973 1974 /* 1975 * More complex inlines 1976 */ 1977 1978 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 1979 1980 static __inline 1981 const hammer2_media_data_t * 1982 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 1983 { 1984 hammer2_chain_t *focus; 1985 const void *data; 1986 1987 focus = xop->cluster.focus; 1988 if (focus->dio) { 1989 lockmgr(&focus->diolk, LK_SHARED); 1990 if ((xop->focus_dio = focus->dio) != NULL) { 1991 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 1992 hammer2_io_bkvasync(xop->focus_dio); 1993 } 1994 data = focus->data; 1995 lockmgr(&focus->diolk, LK_RELEASE); 1996 } else { 1997 data = focus->data; 1998 } 1999 2000 return data; 2001 } 2002 2003 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2004 2005 static __inline 2006 void 2007 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2008 { 2009 if (xop->focus_dio) 2010 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2011 } 2012 2013 #endif /* !_KERNEL */ 2014 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2015