1 /* 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2022 Tomohiro Kusumi <tkusumi@netbsd.org> 5 * Copyright (c) 2011-2022 The DragonFly Project. All rights reserved. 6 * 7 * This code is derived from software contributed to The DragonFly Project 8 * by Matthew Dillon <dillon@dragonflybsd.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 3. Neither the name of The DragonFly Project nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific, prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 32 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 33 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 34 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 /* 39 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES 40 * 41 * This header file contains structures used internally by the HAMMER2 42 * implementation. See hammer2_disk.h for on-disk structures. 43 * 44 * There is an in-memory representation of all on-media data structure. 45 * Almost everything is represented by a hammer2_chain structure in-memory. 46 * Other higher-level structures typically map to chains. 47 * 48 * A great deal of data is accessed simply via its buffer cache buffer, 49 * which is mapped for the duration of the chain's lock. Hammer2 must 50 * implement its own buffer cache layer on top of the system layer to 51 * allow for different threads to lock different sub-block-sized buffers. 52 * 53 * When modifications are made to a chain a new filesystem block must be 54 * allocated. Multiple modifications do not typically allocate new blocks 55 * until the current block has been flushed. Flushes do not block the 56 * front-end unless the front-end operation crosses the current inode being 57 * flushed. 58 * 59 * The in-memory representation may remain cached (for example in order to 60 * placemark clustering locks) even after the related data has been 61 * detached. 62 */ 63 64 #ifndef _VFS_HAMMER2_HAMMER2_H_ 65 #define _VFS_HAMMER2_HAMMER2_H_ 66 67 #ifdef _KERNEL 68 #error "_KERNEL shouldn't be defined" 69 #endif 70 #ifdef _KERNEL_STRUCTURES 71 #error "_KERNEL_STRUCTURES shouldn't be defined" 72 #endif 73 74 #ifdef _KERNEL 75 #include <sys/param.h> 76 #endif 77 #include <sys/types.h> 78 #ifdef _KERNEL 79 #include <sys/kernel.h> 80 #endif 81 //#include <sys/conf.h> 82 #ifdef _KERNEL 83 #include <sys/systm.h> 84 #endif 85 //#include <sys/diskslice.h> 86 #include <sys/tree.h> 87 //#include <sys/malloc.h> 88 #include <sys/mount.h> 89 /* 90 #include <sys/vnode.h> 91 #include <sys/proc.h> 92 #include <sys/priv.h> 93 #include <sys/stat.h> 94 #include <sys/thread.h> 95 #include <sys/lockf.h> 96 #include <sys/buf.h> 97 */ 98 #include <sys/queue.h> 99 /* 100 #include <sys/limits.h> 101 #include <sys/dmsg.h> 102 #include <sys/mutex.h> 103 #include <sys/lock.h> 104 #include <sys/file.h> 105 #include <sys/objcache.h> 106 */ 107 108 #ifdef _KERNEL 109 #include <sys/signal2.h> 110 #include <sys/buf2.h> 111 #include <sys/mutex2.h> 112 #include <sys/spinlock2.h> 113 #endif 114 115 /* 116 #include "hammer2_xxhash.h" 117 #include "hammer2_disk.h" 118 #include "hammer2_mount.h" 119 #include "hammer2_ioctl.h" 120 */ 121 122 #include <sys/time.h> 123 #include <sys/vfscache.h> 124 #include <sys/errno.h> 125 126 #include <machine/atomic.h> 127 128 #include <unistd.h> 129 #include <stdio.h> 130 #include <stdlib.h> 131 #include <stdint.h> 132 #include <string.h> 133 134 #include <vfs/hammer2/hammer2_disk.h> 135 #include <vfs/hammer2/hammer2_mount.h> 136 #include <vfs/hammer2/hammer2_xxhash.h> 137 #include <mkfs_hammer2.h> 138 139 #include "hammer2_compat.h" 140 141 struct hammer2_io; 142 struct hammer2_chain; 143 struct hammer2_inode; 144 struct hammer2_depend; 145 struct hammer2_dev; 146 struct hammer2_pfs; 147 union hammer2_xop; 148 149 /* 150 * Mutex and lock shims. Hammer2 requires support for asynchronous and 151 * abortable locks, and both exclusive and shared spinlocks. Normal 152 * synchronous non-abortable locks can be substituted for spinlocks. 153 */ 154 /* 155 typedef mtx_t hammer2_mtx_t; 156 typedef mtx_state_t hammer2_mtx_state_t; 157 158 typedef struct spinlock hammer2_spin_t; 159 160 #define hammer2_mtx_ex mtx_lock_ex_quick 161 #define hammer2_mtx_ex_try mtx_lock_ex_try 162 #define hammer2_mtx_sh mtx_lock_sh_quick 163 #define hammer2_mtx_sh_again mtx_lock_sh_again 164 #define hammer2_mtx_sh_try mtx_lock_sh_try 165 #define hammer2_mtx_unlock mtx_unlock 166 #define hammer2_mtx_upgrade_try mtx_upgrade_try 167 #define hammer2_mtx_downgrade mtx_downgrade 168 #define hammer2_mtx_owned mtx_owned 169 #define hammer2_mtx_init mtx_init 170 #define hammer2_mtx_temp_release mtx_lock_temp_release 171 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 172 #define hammer2_mtx_refs mtx_lockrefs 173 174 #define hammer2_spin_init spin_init 175 #define hammer2_spin_sh spin_lock_shared 176 #define hammer2_spin_ex spin_lock 177 #define hammer2_spin_unsh spin_unlock_shared 178 #define hammer2_spin_unex spin_unlock 179 #define hammer2_spin_lock_update spin_lock_update 180 #define hammer2_spin_unlock_update spin_unlock_update 181 */ 182 183 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 184 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 185 186 typedef struct hammer2_xop_list hammer2_xop_list_t; 187 188 /* 189 * Cap the dynamic calculation for the maximum number of dirty 190 * chains and dirty inodes allowed. 191 */ 192 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 193 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 194 195 /* 196 * The chain structure tracks a portion of the media topology from the 197 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 198 * data blocks, and freemap nodes and leafs. 199 * 200 * The chain structure utilizes a simple singly-homed topology and the 201 * chain's in-memory topology will move around as the chains do, due mainly 202 * to renames and indirect block creation. 203 * 204 * Block Table Updates 205 * 206 * Block table updates for insertions and updates are delayed until the 207 * flush. This allows us to avoid having to modify the parent chain 208 * all the way to the root. 209 * 210 * Block table deletions are performed immediately (modifying the parent 211 * in the process) because the flush code uses the chain structure to 212 * track delayed updates and the chain will be (likely) gone or moved to 213 * another location in the topology after a deletion. 214 * 215 * A prior iteration of the code tried to keep the relationship intact 216 * on deletes by doing a delete-duplicate operation on the chain, but 217 * it added way too much complexity to the codebase. 218 * 219 * Flush Synchronization 220 * 221 * The flush code must flush modified chains bottom-up. Because chain 222 * structures can shift around and are NOT topologically stable, 223 * modified chains are independently indexed for the flush. As the flush 224 * runs it modifies (or further modifies) and updates the parents, 225 * propagating the flush all the way to the volume root. 226 * 227 * Modifying front-end operations can occur during a flush but will block 228 * in two cases: (1) when the front-end tries to operate on the inode 229 * currently in the midst of being flushed and (2) if the front-end 230 * crosses an inode currently being flushed (such as during a rename). 231 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 232 * the flusher is currently working on "a/b/c", the rename will block 233 * temporarily in order to ensure that "x" exists in one place or the 234 * other. 235 * 236 * Meta-data statistics are updated by the flusher. The front-end will 237 * make estimates but meta-data must be fully synchronized only during a 238 * flush in order to ensure that it remains correct across a crash. 239 * 240 * Multiple flush synchronizations can theoretically be in-flight at the 241 * same time but the implementation is not coded to handle the case and 242 * currently serializes them. 243 * 244 * Snapshots: 245 * 246 * Snapshots currently require the subdirectory tree being snapshotted 247 * to be flushed. The snapshot then creates a new super-root inode which 248 * copies the flushed blockdata of the directory or file that was 249 * snapshotted. 250 * 251 * Radix tree NOTES: 252 * 253 * - Note that the radix tree runs in powers of 2 only so sub-trees 254 * cannot straddle edges. 255 */ 256 RB_HEAD(hammer2_chain_tree, hammer2_chain); 257 258 struct hammer2_reptrack { 259 hammer2_spin_t spin; 260 struct hammer2_reptrack *next; 261 struct hammer2_chain *chain; 262 }; 263 264 /* 265 * Core topology for chain (embedded in chain). Protected by a spinlock. 266 */ 267 struct hammer2_chain_core { 268 hammer2_spin_t spin; 269 struct hammer2_reptrack *reptrack; 270 struct hammer2_chain_tree rbtree; /* sub-chains */ 271 int live_zero; /* blockref array opt */ 272 u_int live_count; /* live (not deleted) chains in tree */ 273 u_int chain_count; /* live + deleted chains under core */ 274 int generation; /* generation number (inserts only) */ 275 }; 276 277 typedef struct hammer2_chain_core hammer2_chain_core_t; 278 279 RB_HEAD(hammer2_io_tree, hammer2_io); 280 281 /* 282 * DIO - Management structure wrapping system buffer cache. 283 * 284 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 285 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 286 * structures. 287 */ 288 /* #define HAMMER2_IO_DEBUG */ 289 290 #ifdef HAMMER2_IO_DEBUG 291 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 292 #define HAMMER2_IO_DEBUG_CALL , file, line 293 #define HAMMER2_IO_DEBUG_COUNT 2048 294 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 295 #else 296 #define HAMMER2_IO_DEBUG_ARGS 297 #define HAMMER2_IO_DEBUG_CALL 298 #endif 299 300 struct hammer2_io { 301 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 302 struct hammer2_dev *hmp; 303 struct vnode *devvp; 304 struct buf *bp; 305 off_t dbase; /* offset of devvp within volumes */ 306 off_t pbase; 307 uint64_t refs; 308 int psize; 309 int act; /* activity */ 310 int btype; /* approximate BREF_TYPE_* */ 311 int ticks; 312 int error; 313 #ifdef HAMMER2_IO_DEBUG 314 int debug_index; 315 #else 316 int unused01; 317 #endif 318 uint64_t dedup_valid; /* valid for dedup operation */ 319 uint64_t dedup_alloc; /* allocated / de-dupable */ 320 #ifdef HAMMER2_IO_DEBUG 321 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 322 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 323 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 324 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 325 #endif 326 }; 327 328 typedef struct hammer2_io hammer2_io_t; 329 330 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 331 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 332 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 333 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 334 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 335 336 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 337 338 /* 339 * Primary chain structure keeps track of the topology in-memory. 340 */ 341 struct hammer2_chain { 342 hammer2_mtx_t lock; 343 hammer2_chain_core_t core; 344 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 345 hammer2_blockref_t bref; 346 struct hammer2_chain *parent; 347 struct hammer2_dev *hmp; 348 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 349 350 struct lock diolk; /* xop focus interlock */ 351 hammer2_io_t *dio; /* physical data buffer */ 352 hammer2_media_data_t *data; /* data pointer shortcut */ 353 u_int bytes; /* physical data size */ 354 u_int flags; 355 u_int refs; 356 u_int lockcnt; 357 int error; /* on-lock data error state */ 358 int cache_index; /* heur speeds up lookup */ 359 360 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 361 }; 362 363 typedef struct hammer2_chain hammer2_chain_t; 364 365 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 366 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 367 368 /* 369 * Special notes on flags: 370 * 371 * INITIAL - This flag allows a chain to be created and for storage to 372 * be allocated without having to immediately instantiate the 373 * related buffer. The data is assumed to be all-zeros. It 374 * is primarily used for indirect blocks. 375 * 376 * MODIFIED - The chain's media data has been modified. Prevents chain 377 * free on lastdrop if still in the topology. 378 * 379 * UPDATE - Chain might not be modified but parent blocktable needs 380 * an update. Prevents chain free on lastdrop if still in 381 * the topology. 382 * 383 * BLKMAPPED - Indicates that the chain is present in the parent blockmap. 384 * 385 * BLKMAPUPD - Indicates that the chain is present but needs to be updated 386 * in the parent blockmap. 387 */ 388 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 389 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 390 #define HAMMER2_CHAIN_DESTROY 0x00000004 391 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 392 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 393 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 394 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 395 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 396 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 397 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 398 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 399 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 400 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 401 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 402 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 403 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 404 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 405 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 406 #define HAMMER2_CHAIN_BLKMAPPED 0x00040000 /* present in blkmap */ 407 #define HAMMER2_CHAIN_BLKMAPUPD 0x00080000 /* +needs updating */ 408 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 409 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 410 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 411 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 412 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 413 414 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 415 HAMMER2_CHAIN_UPDATE | \ 416 HAMMER2_CHAIN_ONFLUSH | \ 417 HAMMER2_CHAIN_DESTROY) 418 419 /* 420 * Hammer2 error codes, used by chain->error and cluster->error. The error 421 * code is typically set on-lock unless no I/O was requested, and set on 422 * I/O otherwise. If set for a cluster it generally means that the cluster 423 * code could not find a valid copy to present. 424 * 425 * All H2 error codes are flags and can be accumulated by ORing them 426 * together. 427 * 428 * IO - An I/O error occurred 429 * CHECK - I/O succeeded but did not match the check code 430 * INCOMPLETE - A cluster is not complete enough to use, or 431 * a chain cannot be loaded because its parent has an error. 432 * 433 * NOTE: API allows callers to check zero/non-zero to determine if an error 434 * condition exists. 435 * 436 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 437 * NULL on other errors. Check chain->error, not chain->data. 438 */ 439 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 440 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 441 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 442 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 443 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 444 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 445 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 446 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 447 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 448 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 449 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 450 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 451 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 452 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 453 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 454 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 455 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 456 #define HAMMER2_ERROR_EDEADLK 0x00010000 457 #define HAMMER2_ERROR_ESRCH 0x00020000 458 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 459 460 /* 461 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 462 * 463 * NOTES: 464 * NODATA - Asks that the chain->data not be resolved in order 465 * to avoid I/O. 466 * 467 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 468 * the inode itself if the inode is in DIRECTDATA mode 469 * (i.e. file is <= 512 bytes). Used by the synchronization 470 * code to prevent confusion. 471 * 472 * SHARED - The input chain is expected to be locked shared, 473 * and the output chain is locked shared. 474 * 475 * MATCHIND - Allows an indirect block / freemap node to be returned 476 * when the passed key range matches the radix. Remember 477 * that key_end is inclusive (e.g. {0x000,0xFFF}, 478 * not {0x000,0x1000}). 479 * 480 * (Cannot be used for remote or cluster ops). 481 * 482 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 483 * missing, bulk file data is not resolved but inodes and 484 * other meta-data will. 485 */ 486 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 487 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 488 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 489 #define HAMMER2_LOOKUP_SHARED 0x00000100 490 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 491 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 492 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 493 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 494 495 /* 496 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 497 * 498 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 499 * blocks in the INITIAL-create state. 500 */ 501 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 502 503 /* 504 * Flags passed to hammer2_chain_lock() 505 * 506 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 507 * will be made to either the cluster being locked or any underlying 508 * cluster. It allows the cluster to lock and access data for a subset 509 * of available nodes instead of all available nodes. 510 * 511 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 512 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 513 * operation. 514 */ 515 #define HAMMER2_RESOLVE_NEVER 1 516 #define HAMMER2_RESOLVE_MAYBE 2 517 #define HAMMER2_RESOLVE_ALWAYS 3 518 #define HAMMER2_RESOLVE_MASK 0x0F 519 520 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 521 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 522 #define HAMMER2_RESOLVE_UNUSED40 0x40 523 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 524 525 /* 526 * Flags passed to hammer2_chain_delete() 527 */ 528 #define HAMMER2_DELETE_PERMANENT 0x0001 529 530 /* 531 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 532 * or hammer2_chain_create(). 533 */ 534 #define HAMMER2_INSERT_PFSROOT 0x0004 535 #define HAMMER2_INSERT_SAMEPARENT 0x0008 536 537 /* 538 * hammer2_freemap_adjust() 539 */ 540 #define HAMMER2_FREEMAP_DORECOVER 1 541 #if 0 542 #define HAMMER2_FREEMAP_DOMAYFREE 2 543 #define HAMMER2_FREEMAP_DOREALFREE 3 544 #endif 545 546 /* 547 * HAMMER2 cluster - A set of chains representing the same entity. 548 * 549 * hammer2_cluster typically represents a temporary set of representitive 550 * chains. The one exception is that a hammer2_cluster is embedded in 551 * hammer2_inode. This embedded cluster is ONLY used to track the 552 * representitive chains and cannot be directly locked. 553 * 554 * A cluster is usually temporary (and thus per-thread) for locking purposes, 555 * allowing us to embed the asynchronous storage required for cluster 556 * operations in the cluster itself and adjust the state and status without 557 * having to worry too much about SMP issues. 558 * 559 * The exception is the cluster embedded in the hammer2_inode structure. 560 * This is used to cache the cluster state on an inode-by-inode basis. 561 * Individual hammer2_chain structures not incorporated into clusters might 562 * also stick around to cache miscellanious elements. 563 * 564 * Because the cluster is a 'working copy' and is usually subject to cluster 565 * quorum rules, it is quite possible for us to end up with an insufficient 566 * number of live chains to execute an operation. If an insufficient number 567 * of chains remain in a working copy, the operation may have to be 568 * downgraded, retried, stall until the requisit number of chains are 569 * available, or possibly even error out depending on the mount type. 570 * 571 * A cluster's focus is set when it is locked. The focus can only be set 572 * to a chain still part of the synchronized set. 573 */ 574 #define HAMMER2_XOPFIFO 16 575 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 576 #define HAMMER2_XOPTHREADS_MIN 32 577 #define HAMMER2_XOPGROUPS_MIN 4 578 579 #define HAMMER2_MAXCLUSTER 8 580 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 581 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 582 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 583 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 584 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 585 586 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 587 588 struct hammer2_cluster_item { 589 hammer2_chain_t *chain; 590 int error; 591 uint32_t flags; 592 }; 593 594 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 595 596 /* 597 * INVALID - Invalid for focus, i.e. not part of synchronized set. 598 * Once set, this bit is sticky across operations. 599 * 600 * FEMOD - Indicates that front-end modifying operations can 601 * mess with this entry and MODSYNC will copy also 602 * effect it. 603 */ 604 #define HAMMER2_CITEM_INVALID 0x00000001 605 #define HAMMER2_CITEM_FEMOD 0x00000002 606 #define HAMMER2_CITEM_NULL 0x00000004 607 608 struct hammer2_cluster { 609 int refs; /* track for deallocation */ 610 int ddflag; 611 struct hammer2_pfs *pmp; 612 uint32_t flags; 613 int nchains; 614 int error; /* error code valid on lock */ 615 int focus_index; 616 hammer2_chain_t *focus; /* current focus (or mod) */ 617 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 618 }; 619 620 typedef struct hammer2_cluster hammer2_cluster_t; 621 622 /* 623 * WRHARD - Hard mounts can write fully synchronized 624 * RDHARD - Hard mounts can read fully synchronized 625 * UNHARD - Unsynchronized masters present 626 * NOHARD - No masters visible 627 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 628 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 629 * UNSOFT - Unsynchronized slaves present 630 * NOSOFT - No slaves visible 631 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 632 * MSYNCED - All masters are fully synchronized 633 * SSYNCED - All known local slaves are fully synchronized to masters 634 * 635 * All available masters are always incorporated. All PFSs belonging to a 636 * cluster (master, slave, copy, whatever) always try to synchronize the 637 * total number of known masters in the PFSs root inode. 638 * 639 * A cluster might have access to many slaves, copies, or caches, but we 640 * have a limited number of cluster slots. Any such elements which are 641 * directly mounted from block device(s) will always be incorporated. Note 642 * that SSYNCED only applies to such elements which are directly mounted, 643 * not to any remote slaves, copies, or caches that could be available. These 644 * bits are used to monitor and drive our synchronization threads. 645 * 646 * When asking the question 'is any data accessible at all', then a simple 647 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 648 * these bits are set the object can be read with certain caveats: 649 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 650 * and RDSLAVE - not authoritative, has some data but it could be old or 651 * incomplete. 652 * 653 * When both soft and hard mounts are available, data will be read and written 654 * via the soft mount only. But all might be in the cluster because 655 * background synchronization threads still need to do their work. 656 */ 657 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 658 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 659 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 660 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 661 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 662 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 663 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 664 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 665 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 666 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 667 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 668 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 669 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 670 671 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 672 HAMMER2_CLUSTER_RDSOFT | \ 673 HAMMER2_CLUSTER_RDSLAVE) 674 #if 0 675 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 676 HAMMER2_CLUSTER_RDSOFT) 677 678 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 679 HAMMER2_CLUSTER_WRSOFT) 680 #endif 681 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 682 HAMMER2_CLUSTER_RDHARD | \ 683 HAMMER2_CLUSTER_WRSOFT | \ 684 HAMMER2_CLUSTER_RDSOFT | \ 685 HAMMER2_CLUSTER_MSYNCED | \ 686 HAMMER2_CLUSTER_SSYNCED) 687 688 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 689 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 690 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 691 692 struct hammer2_depend { 693 TAILQ_ENTRY(hammer2_depend) entry; 694 struct inoq_head sideq; 695 long count; 696 int pass2; 697 int unused01; 698 }; 699 700 typedef struct hammer2_depend hammer2_depend_t; 701 702 /* 703 * A hammer2 inode. 704 * 705 * NOTE: The inode-embedded cluster is never used directly for I/O (since 706 * it may be shared). Instead it will be replicated-in and synchronized 707 * back out if changed. 708 */ 709 struct hammer2_inode { 710 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 711 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 712 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 713 hammer2_depend_t depend_static; /* (in-place allocation) */ 714 hammer2_mtx_t lock; /* inode lock */ 715 hammer2_mtx_t truncate_lock; /* prevent truncates */ 716 struct hammer2_pfs *pmp; /* PFS mount */ 717 struct vnode *vp; 718 hammer2_spin_t cluster_spin; /* update cluster */ 719 hammer2_cluster_t cluster; 720 //struct lockf advlock; 721 u_int flags; 722 u_int refs; /* +vpref, +flushref */ 723 int ihash; /* xop worker distribution */ 724 uint8_t comp_heuristic; 725 hammer2_inode_meta_t meta; /* copy of meta-data */ 726 hammer2_off_t osize; 727 }; 728 729 typedef struct hammer2_inode hammer2_inode_t; 730 731 /* 732 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 733 * RESIZED - Inode truncated (any) or inode extended beyond 734 * EMBEDDED_BYTES. 735 * 736 * SYNCQ - Inode is included in the current filesystem sync. The 737 * DELETING and CREATING flags will be acted upon. 738 * 739 * SIDEQ - Inode has likely been disconnected from the vnode topology 740 * and so is not visible to the vnode-based filesystem syncer 741 * code, but is dirty and must be included in the next 742 * filesystem sync. These inodes are moved to the SYNCQ at 743 * the time the sync occurs. 744 * 745 * Inodes are not placed on this queue simply because they have 746 * become dirty, if a vnode is attached. 747 * 748 * DELETING - Inode is flagged for deletion during the next filesystem 749 * sync. That is, the inode's chain is currently connected 750 * and must be deleting during the current or next fs sync. 751 * 752 * CREATING - Inode is flagged for creation during the next filesystem 753 * sync. That is, the inode's chain topology exists (so 754 * kernel buffer flushes can occur), but is currently 755 * disconnected and must be inserted during the current or 756 * next fs sync. If the DELETING flag is also set, the 757 * topology can be thrown away instead. 758 * 759 * If an inode that is already part of the current filesystem sync is 760 * modified by the frontend, including by buffer flushes, the inode lock 761 * code detects the SYNCQ flag and moves the inode to the head of the 762 * flush-in-progress, then blocks until the flush has gotten past it. 763 */ 764 #define HAMMER2_INODE_MODIFIED 0x0001 765 #define HAMMER2_INODE_UNUSED0002 0x0002 766 #define HAMMER2_INODE_UNUSED0004 0x0004 767 #define HAMMER2_INODE_ONRBTREE 0x0008 768 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 769 #define HAMMER2_INODE_UNUSED0020 0x0020 770 #define HAMMER2_INODE_ISUNLINKED 0x0040 771 #define HAMMER2_INODE_UNUSED0080 0x0080 772 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 773 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 774 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 775 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 776 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 777 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 778 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 779 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 780 781 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 782 HAMMER2_INODE_DIRTYDATA | \ 783 HAMMER2_INODE_DELETING | \ 784 HAMMER2_INODE_CREATING) 785 786 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 787 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 788 hammer2_tid_t); 789 790 /* 791 * Transaction management sub-structure under hammer2_pfs 792 */ 793 struct hammer2_trans { 794 uint32_t flags; 795 uint32_t sync_wait; 796 }; 797 798 typedef struct hammer2_trans hammer2_trans_t; 799 800 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 801 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 802 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 803 #define HAMMER2_TRANS_UNUSED10 0x10000000 804 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 805 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 806 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 807 808 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 809 #define HAMMER2_FREEMAP_HEUR_TYPES 8 810 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 811 HAMMER2_FREEMAP_HEUR_TYPES) 812 813 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 814 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 815 816 #define HAMMER2_FLUSH_TOP 0x0001 817 #define HAMMER2_FLUSH_ALL 0x0002 818 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 819 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 820 821 822 /* 823 * Hammer2 support thread element. 824 * 825 * Potentially many support threads can hang off of hammer2, primarily 826 * off the hammer2_pfs structure. Typically: 827 * 828 * td x Nodes A synchronization thread for each node. 829 * td x Nodes x workers Worker threads for frontend operations. 830 * td x 1 Bioq thread for logical buffer writes. 831 * 832 * In addition, the synchronization thread(s) associated with the 833 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 834 * and dedup scans. 835 */ 836 struct hammer2_thread { 837 struct hammer2_pfs *pmp; 838 struct hammer2_dev *hmp; 839 hammer2_xop_list_t xopq; 840 thread_t td; 841 uint32_t flags; 842 int clindex; /* cluster element index */ 843 int repidx; 844 char *scratch; /* MAXPHYS */ 845 }; 846 847 typedef struct hammer2_thread hammer2_thread_t; 848 849 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 850 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 851 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 852 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 853 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 854 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 855 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 856 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 857 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 858 #define HAMMER2_THREAD_UNFREEZE 0x0200 859 860 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 861 HAMMER2_THREAD_REMASTER | \ 862 HAMMER2_THREAD_STOP | \ 863 HAMMER2_THREAD_FREEZE | \ 864 HAMMER2_THREAD_XOPQ) 865 866 /* 867 * Support structure for dedup heuristic. 868 */ 869 struct hammer2_dedup { 870 hammer2_off_t data_off; 871 uint64_t data_crc; 872 uint32_t ticks; 873 uint32_t saved_error; 874 }; 875 876 typedef struct hammer2_dedup hammer2_dedup_t; 877 878 /* 879 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 880 * 881 * This structure is used to distribute a VOP operation across multiple 882 * nodes. It provides a rendezvous for concurrent node execution and 883 * can be detached from the frontend operation to allow the frontend to 884 * return early. 885 * 886 * This structure also sequences operations on up to three inodes. 887 */ 888 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 889 int clindex); 890 891 struct hammer2_xop_desc { 892 hammer2_xop_func_t storage_func; /* local storage function */ 893 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 894 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 895 const char *id; 896 }; 897 898 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 899 900 struct hammer2_xop_fifo { 901 TAILQ_ENTRY(hammer2_xop_head) entry; 902 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 903 int errors[HAMMER2_XOPFIFO]; 904 int ri; 905 int wi; 906 int flags; 907 hammer2_thread_t *thr; 908 }; 909 910 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 911 912 #define HAMMER2_XOP_FIFO_RUN 0x0001 913 #define HAMMER2_XOP_FIFO_STALL 0x0002 914 915 struct hammer2_xop_head { 916 hammer2_xop_desc_t *desc; 917 hammer2_tid_t mtid; 918 struct hammer2_inode *ip1; 919 struct hammer2_inode *ip2; 920 struct hammer2_inode *ip3; 921 struct hammer2_inode *ip4; 922 uint64_t run_mask; 923 uint64_t chk_mask; 924 int flags; 925 int state; 926 int error; 927 hammer2_key_t collect_key; 928 char *name1; 929 size_t name1_len; 930 char *name2; 931 size_t name2_len; 932 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 933 hammer2_cluster_t cluster; /* help collections */ 934 hammer2_io_t *focus_dio; 935 }; 936 937 typedef struct hammer2_xop_head hammer2_xop_head_t; 938 939 struct hammer2_xop_ipcluster { 940 hammer2_xop_head_t head; 941 }; 942 943 struct hammer2_xop_strategy { 944 hammer2_xop_head_t head; 945 hammer2_key_t lbase; 946 int finished; 947 hammer2_mtx_t lock; 948 struct bio *bio; 949 }; 950 951 struct hammer2_xop_readdir { 952 hammer2_xop_head_t head; 953 hammer2_key_t lkey; 954 }; 955 956 struct hammer2_xop_nresolve { 957 hammer2_xop_head_t head; 958 hammer2_key_t lhc; /* if name is NULL used lhc */ 959 }; 960 961 struct hammer2_xop_unlink { 962 hammer2_xop_head_t head; 963 int isdir; 964 int dopermanent; 965 }; 966 967 #define H2DOPERM_PERMANENT 0x01 968 #define H2DOPERM_FORCE 0x02 969 #define H2DOPERM_IGNINO 0x04 970 971 struct hammer2_xop_nrename { 972 hammer2_xop_head_t head; 973 hammer2_tid_t lhc; 974 int ip_key; 975 }; 976 977 struct hammer2_xop_scanlhc { 978 hammer2_xop_head_t head; 979 hammer2_key_t lhc; 980 }; 981 982 struct hammer2_xop_scanall { 983 hammer2_xop_head_t head; 984 hammer2_key_t key_beg; /* inclusive */ 985 hammer2_key_t key_end; /* inclusive */ 986 int resolve_flags; 987 int lookup_flags; 988 }; 989 990 struct hammer2_xop_lookup { 991 hammer2_xop_head_t head; 992 hammer2_key_t lhc; 993 }; 994 995 struct hammer2_xop_mkdirent { 996 hammer2_xop_head_t head; 997 hammer2_dirent_head_t dirent; 998 hammer2_key_t lhc; 999 }; 1000 1001 struct hammer2_xop_create { 1002 hammer2_xop_head_t head; 1003 hammer2_inode_meta_t meta; /* initial metadata */ 1004 hammer2_key_t lhc; 1005 int flags; 1006 }; 1007 1008 struct hammer2_xop_destroy { 1009 hammer2_xop_head_t head; 1010 }; 1011 1012 struct hammer2_xop_fsync { 1013 hammer2_xop_head_t head; 1014 hammer2_inode_meta_t meta; 1015 hammer2_off_t osize; 1016 u_int ipflags; 1017 int clear_directdata; 1018 }; 1019 1020 struct hammer2_xop_unlinkall { 1021 hammer2_xop_head_t head; 1022 hammer2_key_t key_beg; 1023 hammer2_key_t key_end; 1024 }; 1025 1026 struct hammer2_xop_connect { 1027 hammer2_xop_head_t head; 1028 hammer2_key_t lhc; 1029 }; 1030 1031 struct hammer2_xop_flush { 1032 hammer2_xop_head_t head; 1033 }; 1034 1035 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1036 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1037 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1038 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1039 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1040 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1041 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1042 typedef struct hammer2_xop_create hammer2_xop_create_t; 1043 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1044 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1045 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1046 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1047 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1048 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1049 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1050 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1051 1052 union hammer2_xop { 1053 hammer2_xop_head_t head; 1054 hammer2_xop_ipcluster_t xop_ipcluster; 1055 hammer2_xop_readdir_t xop_readdir; 1056 hammer2_xop_nresolve_t xop_nresolve; 1057 hammer2_xop_unlink_t xop_unlink; 1058 hammer2_xop_nrename_t xop_nrename; 1059 hammer2_xop_strategy_t xop_strategy; 1060 hammer2_xop_mkdirent_t xop_mkdirent; 1061 hammer2_xop_create_t xop_create; 1062 hammer2_xop_destroy_t xop_destroy; 1063 hammer2_xop_fsync_t xop_fsync; 1064 hammer2_xop_unlinkall_t xop_unlinkall; 1065 hammer2_xop_scanlhc_t xop_scanlhc; 1066 hammer2_xop_scanall_t xop_scanall; 1067 hammer2_xop_lookup_t xop_lookup; 1068 hammer2_xop_flush_t xop_flush; 1069 hammer2_xop_connect_t xop_connect; 1070 }; 1071 1072 typedef union hammer2_xop hammer2_xop_t; 1073 1074 /* 1075 * hammer2_xop_group - Manage XOP support threads. 1076 */ 1077 struct hammer2_xop_group { 1078 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1079 }; 1080 1081 typedef struct hammer2_xop_group hammer2_xop_group_t; 1082 1083 /* 1084 * flags to hammer2_xop_collect() 1085 */ 1086 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1087 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1088 1089 /* 1090 * flags to hammer2_xop_alloc() 1091 * 1092 * MODIFYING - This is a modifying transaction, allocate a mtid. 1093 */ 1094 #define HAMMER2_XOP_MODIFYING 0x00000001 1095 #define HAMMER2_XOP_STRATEGY 0x00000002 1096 #define HAMMER2_XOP_INODE_STOP 0x00000004 1097 #define HAMMER2_XOP_VOLHDR 0x00000008 1098 #define HAMMER2_XOP_FSSYNC 0x00000010 1099 1100 /* 1101 * Device vnode management structure 1102 */ 1103 struct hammer2_devvp { 1104 TAILQ_ENTRY(hammer2_devvp) entry; 1105 struct vnode *devvp; /* device vnode */ 1106 char *path; /* device vnode path */ 1107 int open; /* 1 if devvp open */ 1108 }; 1109 1110 typedef struct hammer2_devvp hammer2_devvp_t; 1111 1112 TAILQ_HEAD(hammer2_devvp_list, hammer2_devvp); 1113 1114 typedef struct hammer2_devvp_list hammer2_devvp_list_t; 1115 1116 /* 1117 * Volume management structure 1118 */ 1119 struct hammer2_vfsvolume { 1120 hammer2_devvp_t *dev; /* device vnode management */ 1121 int id; /* volume id */ 1122 hammer2_off_t offset; /* offset within volumes */ 1123 hammer2_off_t size; /* volume size */ 1124 }; 1125 1126 typedef struct hammer2_vfsvolume hammer2_vfsvolume_t; 1127 1128 /* 1129 * Global (per partition) management structure, represents a hard block 1130 * device. Typically referenced by hammer2_chain structures when applicable. 1131 * Typically not used for network-managed elements. 1132 * 1133 * Note that a single hammer2_dev can be indirectly tied to multiple system 1134 * mount points. There is no direct relationship. System mounts are 1135 * per-cluster-id, not per-block-device, and a single hard mount might contain 1136 * many PFSs and those PFSs might combine together in various ways to form 1137 * the set of available clusters. 1138 */ 1139 struct hammer2_dev { 1140 struct vnode *devvp; /* device vnode for root volume */ 1141 int ronly; /* read-only mount */ 1142 int mount_count; /* number of actively mounted PFSs */ 1143 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1144 1145 struct malloc_type *mchain_obj; 1146 struct malloc_type *mio_obj; 1147 struct malloc_type *mmsg; 1148 //kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1149 hammer2_spin_t io_spin; /* iotree, iolruq access */ 1150 struct hammer2_io_tree iotree; 1151 int iofree_count; 1152 int freemap_relaxed; 1153 hammer2_chain_t vchain; /* anchor chain (topology) */ 1154 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1155 hammer2_spin_t list_spin; 1156 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1157 struct lock vollk; /* lockmgr lock */ 1158 struct lock bulklk; /* bulkfree operation lock */ 1159 struct lock bflock; /* bulk-free manual function lock */ 1160 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1161 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1162 int volhdrno; /* last volhdrno written */ 1163 uint32_t hflags; /* HMNT2 flags applicable to device */ 1164 hammer2_off_t free_reserved; /* nominal free reserved */ 1165 hammer2_off_t total_size; /* total size of volumes */ 1166 int nvolumes; /* total number of volumes */ 1167 hammer2_thread_t bfthr; /* bulk-free thread */ 1168 char devrepname[64]; /* for kprintf */ 1169 hammer2_volume_data_t voldata; 1170 hammer2_volume_data_t volsync; /* synchronized voldata */ 1171 1172 hammer2_devvp_list_t devvpl; /* list of device vnodes including *devvp */ 1173 hammer2_vfsvolume_t volumes[HAMMER2_MAX_VOLUMES]; /* list of volumes */ 1174 }; 1175 1176 typedef struct hammer2_dev hammer2_dev_t; 1177 1178 /* 1179 * Per-cluster management structure. This structure will be tied to a 1180 * system mount point if the system is mounting the PFS, but is also used 1181 * to manage clusters encountered during the super-root scan or received 1182 * via LNK_SPANs that might not be mounted. 1183 * 1184 * This structure is also used to represent the super-root that hangs off 1185 * of a hard mount point. The super-root is not really a cluster element. 1186 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1187 * this than to special case super-root manipulation in the hammer2_chain* 1188 * code as being only hammer2_dev-related. 1189 * 1190 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1191 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1192 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1193 * how many masters have been configured for a cluster and is always 1194 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1195 * iroot cluster and describes the PFS types of the nodes making up the 1196 * cluster. 1197 * 1198 * WARNING! Portions of this structure have deferred initialization. In 1199 * particular, if not mounted there will be no wthread. 1200 * umounted network PFSs will also be missing iroot and numerous 1201 * other fields will not be initialized prior to mount. 1202 * 1203 * Synchronization threads are chain-specific and only applicable 1204 * to local hard PFS entries. A hammer2_pfs structure may contain 1205 * more than one when multiple hard PFSs are present on the local 1206 * machine which require synchronization monitoring. Most PFSs 1207 * (such as snapshots) are 1xMASTER PFSs which do not need a 1208 * synchronization thread. 1209 * 1210 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1211 * hammer2_dev->mount_count when the pfs is associated with a mount 1212 * point. 1213 */ 1214 struct hammer2_pfs { 1215 struct mount *mp; 1216 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1217 uuid_t pfs_clid; 1218 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1219 hammer2_dev_t *force_local; /* only if 'local' mount */ 1220 hammer2_inode_t *iroot; /* PFS root inode */ 1221 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1222 char *pfs_names[HAMMER2_MAXCLUSTER]; 1223 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1224 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1225 hammer2_trans_t trans; 1226 struct lock lock; /* PFS lock for certain ops */ 1227 //struct netexport export; /* nfs export */ 1228 int unused00; 1229 int ronly; /* read-only mount */ 1230 int hflags; /* pfs-specific mount flags */ 1231 struct malloc_type *minode_obj; 1232 hammer2_spin_t inum_spin; /* inumber lookup */ 1233 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1234 long inum_count; /* #of inodes in inum_tree */ 1235 hammer2_spin_t lru_spin; /* inumber lookup */ 1236 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1237 int lru_count; /* #of chains on LRU */ 1238 int flags; 1239 hammer2_tid_t modify_tid; /* modify transaction id */ 1240 hammer2_tid_t inode_tid; /* inode allocator */ 1241 uint8_t pfs_nmasters; /* total masters */ 1242 uint8_t pfs_mode; /* operating mode PFSMODE */ 1243 uint8_t unused01; 1244 uint8_t unused02; 1245 int free_ticks; /* free_* calculations */ 1246 long inmem_inodes; 1247 hammer2_off_t free_reserved; 1248 hammer2_off_t free_nominal; 1249 uint32_t inmem_dirty_chains; 1250 int count_lwinprog; /* logical write in prog */ 1251 hammer2_spin_t list_spin; 1252 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1253 struct depq_head depq; /* SIDEQ flagged inodes */ 1254 long sideq_count; /* total inodes on depq */ 1255 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1256 uint32_t cluster_flags; /* cached cluster flags */ 1257 int has_xop_threads; 1258 hammer2_spin_t xop_spin; /* xop sequencer */ 1259 hammer2_xop_group_t *xop_groups; 1260 }; 1261 1262 typedef struct hammer2_pfs hammer2_pfs_t; 1263 1264 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1265 1266 /* 1267 * pmp->flags 1268 */ 1269 #define HAMMER2_PMPF_SPMP 0x00000001 1270 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1271 1272 /* 1273 * NOTE: The LRU list contains at least all the chains with refs == 0 1274 * that can be recycled, and may contain additional chains which 1275 * cannot. 1276 */ 1277 #define HAMMER2_LRU_LIMIT 4096 1278 1279 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1280 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1281 1282 #define HAMMER2_LWINPROG_WAITING 0x80000000 1283 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1284 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1285 1286 /* 1287 * hammer2_cluster_check 1288 */ 1289 #define HAMMER2_CHECK_NULL 0x00000001 1290 1291 /* 1292 * Misc 1293 */ 1294 //#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1295 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1296 //#endif 1297 1298 //#if defined(_KERNEL) 1299 1300 #ifdef MALLOC_DECLARE 1301 MALLOC_DECLARE(M_HAMMER2); 1302 #endif 1303 1304 static __inline 1305 hammer2_pfs_t * 1306 MPTOPMP(struct mount *mp) 1307 { 1308 return ((hammer2_pfs_t *)mp->mnt_data); 1309 } 1310 1311 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1312 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1313 1314 static __inline 1315 uint64_t 1316 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1317 { 1318 int bbeg; 1319 int bits; 1320 uint64_t mask; 1321 1322 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1323 HAMMER2_DEDUP_FRAGRADIX; 1324 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1325 HAMMER2_DEDUP_FRAGRADIX); 1326 if (bbeg + bits == 64) 1327 mask = (uint64_t)-1; 1328 else 1329 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1330 1331 mask &= ~(((uint64_t)1 << bbeg) - 1); 1332 1333 return mask; 1334 } 1335 1336 static __inline 1337 int 1338 hammer2_error_to_errno(int error) 1339 { 1340 if (error) { 1341 if (error & HAMMER2_ERROR_EIO) 1342 error = EIO; 1343 else if (error & HAMMER2_ERROR_CHECK) 1344 error = EDOM; 1345 else if (error & HAMMER2_ERROR_ABORTED) 1346 error = EINTR; 1347 else if (error & HAMMER2_ERROR_BADBREF) 1348 error = EIO; 1349 else if (error & HAMMER2_ERROR_ENOSPC) 1350 error = ENOSPC; 1351 else if (error & HAMMER2_ERROR_ENOENT) 1352 error = ENOENT; 1353 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1354 error = ENOTEMPTY; 1355 else if (error & HAMMER2_ERROR_EAGAIN) 1356 error = EAGAIN; 1357 else if (error & HAMMER2_ERROR_ENOTDIR) 1358 error = ENOTDIR; 1359 else if (error & HAMMER2_ERROR_EISDIR) 1360 error = EISDIR; 1361 else if (error & HAMMER2_ERROR_EINPROGRESS) 1362 error = EINPROGRESS; 1363 else if (error & HAMMER2_ERROR_EEXIST) 1364 error = EEXIST; 1365 else if (error & HAMMER2_ERROR_EINVAL) 1366 error = EINVAL; 1367 else if (error & HAMMER2_ERROR_EDEADLK) 1368 error = EDEADLK; 1369 else if (error & HAMMER2_ERROR_ESRCH) 1370 error = ESRCH; 1371 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1372 error = ETIMEDOUT; 1373 else 1374 error = EDOM; 1375 } 1376 return error; 1377 } 1378 1379 static __inline 1380 int 1381 hammer2_errno_to_error(int error) 1382 { 1383 switch(error) { 1384 case 0: 1385 return 0; 1386 case EIO: 1387 return HAMMER2_ERROR_EIO; 1388 case EDOM: 1389 return HAMMER2_ERROR_CHECK; 1390 case EINTR: 1391 return HAMMER2_ERROR_ABORTED; 1392 //case EIO: 1393 // return HAMMER2_ERROR_BADBREF; 1394 case ENOSPC: 1395 return HAMMER2_ERROR_ENOSPC; 1396 case ENOENT: 1397 return HAMMER2_ERROR_ENOENT; 1398 case ENOTEMPTY: 1399 return HAMMER2_ERROR_ENOTEMPTY; 1400 case EAGAIN: 1401 return HAMMER2_ERROR_EAGAIN; 1402 case ENOTDIR: 1403 return HAMMER2_ERROR_ENOTDIR; 1404 case EISDIR: 1405 return HAMMER2_ERROR_EISDIR; 1406 case EINPROGRESS: 1407 return HAMMER2_ERROR_EINPROGRESS; 1408 case EEXIST: 1409 return HAMMER2_ERROR_EEXIST; 1410 case EINVAL: 1411 return HAMMER2_ERROR_EINVAL; 1412 case EDEADLK: 1413 return HAMMER2_ERROR_EDEADLK; 1414 case ESRCH: 1415 return HAMMER2_ERROR_ESRCH; 1416 case ETIMEDOUT: 1417 return HAMMER2_ERROR_ETIMEDOUT; 1418 default: 1419 return HAMMER2_ERROR_EINVAL; 1420 } 1421 } 1422 1423 1424 extern struct vop_ops hammer2_vnode_vops; 1425 extern struct vop_ops hammer2_spec_vops; 1426 extern struct vop_ops hammer2_fifo_vops; 1427 extern struct hammer2_pfslist hammer2_pfslist; 1428 extern struct lock hammer2_mntlk; 1429 1430 extern int hammer2_aux_flags; 1431 extern int hammer2_debug; 1432 extern int hammer2_xop_nthreads; 1433 extern int hammer2_xop_sgroups; 1434 extern int hammer2_xop_xgroups; 1435 extern int hammer2_xop_xbase; 1436 extern int hammer2_xop_mod; 1437 extern long hammer2_debug_inode; 1438 extern int hammer2_cluster_meta_read; 1439 extern int hammer2_cluster_data_read; 1440 extern int hammer2_cluster_write; 1441 extern int hammer2_dedup_enable; 1442 extern int hammer2_always_compress; 1443 extern int hammer2_flush_pipe; 1444 extern int hammer2_dio_count; 1445 extern int hammer2_dio_limit; 1446 extern int hammer2_bulkfree_tps; 1447 extern int hammer2_spread_workers; 1448 extern int hammer2_limit_saved_depth; 1449 extern long hammer2_chain_allocs; 1450 extern long hammer2_limit_saved_chains; 1451 extern long hammer2_limit_dirty_chains; 1452 extern long hammer2_limit_dirty_inodes; 1453 extern long hammer2_count_modified_chains; 1454 extern long hammer2_iod_file_read; 1455 extern long hammer2_iod_meta_read; 1456 extern long hammer2_iod_indr_read; 1457 extern long hammer2_iod_fmap_read; 1458 extern long hammer2_iod_volu_read; 1459 extern long hammer2_iod_file_write; 1460 extern long hammer2_iod_file_wembed; 1461 extern long hammer2_iod_file_wzero; 1462 extern long hammer2_iod_file_wdedup; 1463 extern long hammer2_iod_meta_write; 1464 extern long hammer2_iod_indr_write; 1465 extern long hammer2_iod_fmap_write; 1466 extern long hammer2_iod_volu_write; 1467 1468 extern long hammer2_process_icrc32; 1469 extern long hammer2_process_xxhash64; 1470 1471 extern struct objcache *cache_buffer_read; 1472 extern struct objcache *cache_buffer_write; 1473 extern struct objcache *cache_xops; 1474 1475 /* 1476 * hammer2_subr.c 1477 */ 1478 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1479 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1480 1481 int hammer2_signal_check(time_t *timep); 1482 const char *hammer2_error_str(int error); 1483 const char *hammer2_bref_type_str(int btype); 1484 1485 int hammer2_get_dtype(uint8_t type); 1486 int hammer2_get_vtype(uint8_t type); 1487 uint8_t hammer2_get_obj_type(enum vtype vtype); 1488 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1489 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1490 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1491 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1492 1493 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1494 int hammer2_getradix(size_t bytes); 1495 1496 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1497 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1498 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1499 void hammer2_update_time(uint64_t *timep); 1500 void hammer2_adjreadcounter(int btype, size_t bytes); 1501 void hammer2_adjwritecounter(int btype, size_t bytes); 1502 1503 /* 1504 * hammer2_inode.c 1505 */ 1506 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1507 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1508 hammer2_tid_t inum); 1509 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1510 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1511 void hammer2_inode_ref(hammer2_inode_t *ip); 1512 void hammer2_inode_drop(hammer2_inode_t *ip); 1513 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1514 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1515 int idx); 1516 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1517 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1518 void hammer2_inode_modify(hammer2_inode_t *ip); 1519 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1520 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1521 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1522 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1523 void hammer2_inode_unlock(hammer2_inode_t *ip); 1524 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1525 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1526 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1527 int clindex, hammer2_chain_t **parentp, int how); 1528 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1529 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1530 hammer2_mtx_state_t ostate); 1531 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1532 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1533 1534 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1535 struct vattr *vap, struct ucred *cred, 1536 hammer2_key_t inum, int *errorp); 1537 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1538 const uint8_t *name, size_t name_len, 1539 int *errorp); 1540 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1541 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1542 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1543 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1544 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, struct vnode **vpp); 1545 void hammer2_inode_vprecycle(struct vnode *vp); 1546 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1547 size_t name_len, hammer2_key_t inum, uint8_t type); 1548 1549 hammer2_key_t hammer2_pfs_inode_count(hammer2_pfs_t *pmp); 1550 int vflush(struct mount *mp, int rootrefs, int flags); 1551 1552 /* 1553 * hammer2_chain.c 1554 */ 1555 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1556 hammer2_pfs_t *pmp, 1557 hammer2_blockref_t *bref); 1558 void hammer2_chain_core_init(hammer2_chain_t *chain); 1559 void hammer2_chain_ref(hammer2_chain_t *chain); 1560 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1561 void hammer2_chain_drop(hammer2_chain_t *chain); 1562 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1563 void hammer2_chain_unhold(hammer2_chain_t *chain); 1564 void hammer2_chain_rehold(hammer2_chain_t *chain); 1565 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1566 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1567 void hammer2_chain_load_data(hammer2_chain_t *chain); 1568 1569 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1570 int clindex, int flags, 1571 hammer2_chain_t **parentp, 1572 hammer2_chain_t **chainp); 1573 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1574 hammer2_off_t dedup_off, int flags); 1575 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1576 hammer2_tid_t mtid, int flags); 1577 int hammer2_chain_resize(hammer2_chain_t *chain, 1578 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1579 int nradix, int flags); 1580 void hammer2_chain_unlock(hammer2_chain_t *chain); 1581 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1582 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1583 hammer2_blockref_t *bref, int how); 1584 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1585 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1586 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1587 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1588 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1589 hammer2_key_t *key_nextp, 1590 hammer2_key_t key_beg, hammer2_key_t key_end, 1591 int *errorp, int flags); 1592 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1593 hammer2_chain_t *chain, 1594 hammer2_key_t *key_nextp, 1595 hammer2_key_t key_beg, hammer2_key_t key_end, 1596 int *errorp, int flags); 1597 int hammer2_chain_scan(hammer2_chain_t *parent, 1598 hammer2_chain_t **chainp, 1599 hammer2_blockref_t *bref, 1600 int *firstp, int flags); 1601 1602 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1603 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1604 int methods, hammer2_key_t key, int keybits, 1605 int type, size_t bytes, hammer2_tid_t mtid, 1606 hammer2_off_t dedup_off, int flags); 1607 void hammer2_chain_rename(hammer2_chain_t **parentp, 1608 hammer2_chain_t *chain, 1609 hammer2_tid_t mtid, int flags); 1610 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1611 hammer2_tid_t mtid, int flags); 1612 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1613 hammer2_chain_t *chain); 1614 void hammer2_chain_setflush(hammer2_chain_t *chain); 1615 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1616 hammer2_blockref_t *base, int count); 1617 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1618 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1619 1620 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1621 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1622 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1623 size_t name_len); 1624 1625 void hammer2_base_delete(hammer2_chain_t *parent, 1626 hammer2_blockref_t *base, int count, 1627 hammer2_chain_t *chain, 1628 hammer2_blockref_t *obref); 1629 void hammer2_base_insert(hammer2_chain_t *parent, 1630 hammer2_blockref_t *base, int count, 1631 hammer2_chain_t *chain, 1632 hammer2_blockref_t *elm); 1633 1634 /* 1635 * hammer2_flush.c 1636 */ 1637 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1638 int hammer2_flush(hammer2_chain_t *chain, int istop); 1639 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1640 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1641 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1642 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1643 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1644 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1645 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1646 1647 /* 1648 * hammer2_ioctl.c 1649 */ 1650 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1651 int fflag, struct ucred *cred); 1652 1653 /* 1654 * hammer2_io.c 1655 */ 1656 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1657 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1658 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1659 void hammer2_io_bkvasync(hammer2_io_t *dio); 1660 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1661 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1662 hammer2_off_t data_off, u_int bytes); 1663 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1664 u_int bytes); 1665 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1666 hammer2_io_t **diop); 1667 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1668 hammer2_io_t **diop); 1669 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1670 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1671 void hammer2_io_setdirty(hammer2_io_t *dio); 1672 1673 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1674 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1675 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1676 int lsize HAMMER2_IO_DEBUG_ARGS); 1677 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1678 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1679 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1680 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1681 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1682 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1683 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1684 1685 #ifndef HAMMER2_IO_DEBUG 1686 1687 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1688 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1689 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1690 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1691 #define hammer2_io_putblk(diop) \ 1692 _hammer2_io_putblk(diop) 1693 #define hammer2_io_bwrite(diop) \ 1694 _hammer2_io_bwrite((diop)) 1695 #define hammer2_io_bawrite(diop) \ 1696 _hammer2_io_bawrite((diop)) 1697 #define hammer2_io_bdwrite(diop) \ 1698 _hammer2_io_bdwrite((diop)) 1699 #define hammer2_io_brelse(diop) \ 1700 _hammer2_io_brelse((diop)) 1701 #define hammer2_io_bqrelse(diop) \ 1702 _hammer2_io_bqrelse((diop)) 1703 #define hammer2_io_ref(dio) \ 1704 _hammer2_io_ref((dio)) 1705 1706 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1707 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1708 1709 #else 1710 1711 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1712 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1713 __FILE__, __LINE__) 1714 1715 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1716 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1717 1718 #define hammer2_io_putblk(diop) \ 1719 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1720 1721 #define hammer2_io_bwrite(diop) \ 1722 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1723 #define hammer2_io_bawrite(diop) \ 1724 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1725 #define hammer2_io_bdwrite(diop) \ 1726 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1727 #define hammer2_io_brelse(diop) \ 1728 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1729 #define hammer2_io_bqrelse(diop) \ 1730 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1731 #define hammer2_io_ref(dio) \ 1732 _hammer2_io_ref((dio), __FILE__, __LINE__) 1733 1734 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1735 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1736 __FILE__, __LINE__) 1737 1738 #endif 1739 1740 /* 1741 * hammer2_admin.c 1742 */ 1743 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1744 void hammer2_thr_signal2(hammer2_thread_t *thr, 1745 uint32_t pflags, uint32_t nflags); 1746 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1747 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1748 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1749 void hammer2_thr_create(hammer2_thread_t *thr, 1750 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1751 const char *id, int clindex, int repidx, 1752 void (*func)(void *arg)); 1753 void hammer2_thr_delete(hammer2_thread_t *thr); 1754 void hammer2_thr_remaster(hammer2_thread_t *thr); 1755 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1756 void hammer2_thr_freeze(hammer2_thread_t *thr); 1757 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1758 int hammer2_thr_break(hammer2_thread_t *thr); 1759 void hammer2_primary_xops_thread(void *arg); 1760 1761 /* 1762 * hammer2_thread.c (XOP API) 1763 */ 1764 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1765 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1766 const char *name, size_t name_len); 1767 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1768 const char *name, size_t name_len); 1769 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1770 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1771 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1772 void hammer2_xop_setip4(hammer2_xop_head_t *xop, hammer2_inode_t *ip4); 1773 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1774 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1775 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1776 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1777 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1778 int notidx); 1779 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1780 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1781 int hammer2_xop_active(hammer2_xop_head_t *xop); 1782 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1783 int clindex, int error); 1784 1785 /* 1786 * hammer2_synchro.c 1787 */ 1788 void hammer2_primary_sync_thread(void *arg); 1789 1790 /* 1791 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1792 * may be integrated into other source files. 1793 */ 1794 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1795 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1796 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1797 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1798 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1799 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1800 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1801 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1802 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1803 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1804 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1805 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1806 void *scratch, int clindex); 1807 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1808 void *scratch, int clindex); 1809 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1810 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1811 int clindex); 1812 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1813 int clindex); 1814 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1815 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1816 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1817 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1818 1819 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1820 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1821 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1822 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1823 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1824 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1825 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1826 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1827 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1828 int clindex); 1829 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1830 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1831 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1832 int clindex); 1833 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1834 int clindex); 1835 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1836 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1837 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1839 int clindex); 1840 1841 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1844 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1845 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1847 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1848 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1849 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1850 int clindex); 1851 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1852 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1853 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1854 int clindex); 1855 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1856 int clindex); 1857 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1858 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1859 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1860 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1861 int clindex); 1862 1863 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1864 extern hammer2_xop_desc_t hammer2_readdir_desc; 1865 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1866 extern hammer2_xop_desc_t hammer2_unlink_desc; 1867 extern hammer2_xop_desc_t hammer2_nrename_desc; 1868 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1869 extern hammer2_xop_desc_t hammer2_scanall_desc; 1870 extern hammer2_xop_desc_t hammer2_lookup_desc; 1871 extern hammer2_xop_desc_t hammer2_delete_desc; 1872 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1873 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1874 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1875 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1876 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1877 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1878 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1879 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1880 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1881 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1882 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1883 1884 /* 1885 * hammer2_msgops.c 1886 */ 1887 /* 1888 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1889 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1890 */ 1891 1892 /* 1893 * hammer2_vfsops.c 1894 */ 1895 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1896 char pfx, u_int flags); 1897 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1898 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1899 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1900 1901 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1902 const hammer2_inode_data_t *ripdata, 1903 hammer2_tid_t modify_tid, 1904 hammer2_dev_t *force_local); 1905 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1906 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1907 ino_t ino, struct vnode **vpp); 1908 int hammer2_vfs_root(struct mount *mp, struct vnode **vpp); 1909 1910 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1911 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1912 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1913 1914 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1915 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1916 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1917 1918 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1919 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1920 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1921 1922 int hammer2_vfs_init(void); 1923 int hammer2_vfs_uninit(void); 1924 1925 int hammer2_vfs_mount(struct vnode *makefs_devvp, struct mount *mp, 1926 const char *label, const struct hammer2_mount_info *mi); 1927 int hammer2_vfs_unmount(struct mount *mp, int mntflags); 1928 1929 void hammer2_dump_chains(hammer2_dev_t *hmp, char vpfx, char fpfx); 1930 1931 /* 1932 * hammer2_freemap.c 1933 */ 1934 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1935 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1936 hammer2_blockref_t *bref, int how); 1937 1938 /* 1939 * hammer2_cluster.c 1940 */ 1941 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1942 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1943 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1944 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1945 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1946 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1947 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1948 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1949 int flags); 1950 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1951 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1952 1953 /* 1954 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1955 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1956 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1957 struct hammer2_ioc_bulkfree *bfi); 1958 */ 1959 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1960 hammer2_chain_t *chain); 1961 1962 /* 1963 * hammer2_iocom.c 1964 */ 1965 /* 1966 void hammer2_iocom_init(hammer2_dev_t *hmp); 1967 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1968 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1969 */ 1970 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1971 1972 /* 1973 * hammer2_strategy.c 1974 */ 1975 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1976 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1977 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1978 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1979 const char *data); 1980 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1981 1982 /* 1983 * hammer2_ondisk.c 1984 */ 1985 int hammer2_open_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1986 int hammer2_close_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1987 int hammer2_init_devvp(struct vnode *devvp, hammer2_devvp_list_t *devvpl); 1988 void hammer2_cleanup_devvp(hammer2_devvp_list_t *devvpl); 1989 int hammer2_init_vfsvolumes(struct mount *mp, const hammer2_devvp_list_t *devvpl, 1990 hammer2_vfsvolume_t *volumes, 1991 hammer2_volume_data_t *rootvoldata, 1992 int *rootvolzone, 1993 struct vnode **rootvoldevvp); 1994 hammer2_vfsvolume_t *hammer2_get_volume(hammer2_dev_t *hmp, hammer2_off_t offset); 1995 1996 /* 1997 * hammer2_vnops.c 1998 */ 1999 int hammer2_reclaim(struct vnode *vp); 2000 int hammer2_write(struct vnode *vp, void *buf, size_t size, off_t offset); 2001 int hammer2_nresolve(struct vnode *dvp, struct vnode **vpp, char *name, int nlen); 2002 int hammer2_nmkdir(struct vnode *dvp, struct vnode **vpp, char *name, int nlen); 2003 int hammer2_nlink(struct vnode *dvp, struct vnode *vp, char *name, int nlen); 2004 int hammer2_ncreate(struct vnode *dvp, struct vnode **vpp, char *name, int nlen); 2005 int hammer2_nsymlink(struct vnode *dvp, struct vnode **vpp, char *name, int nlen, 2006 char *target); 2007 2008 /* 2009 * hammer2_buf.c 2010 */ 2011 struct buf *getblkx(struct vnode *vp, off_t loffset, int size, int blkflags, 2012 int slptimeo); 2013 int breadx(struct vnode *vp, off_t loffset, int size, struct buf **bpp); 2014 int bread_kvabio(struct vnode *vp, off_t loffset, int size, struct buf **bpp); 2015 void bqrelse(struct buf *bp); 2016 int bawrite(struct buf *bp); 2017 int uiomovebp(struct buf *bp, caddr_t cp, size_t n, struct uio *uio); 2018 2019 /* 2020 * More complex inlines 2021 */ 2022 2023 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 2024 2025 static __inline 2026 const hammer2_media_data_t * 2027 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 2028 { 2029 hammer2_chain_t *focus; 2030 const void *data; 2031 2032 focus = xop->cluster.focus; 2033 if (focus->dio) { 2034 lockmgr(&focus->diolk, LK_SHARED); 2035 if ((xop->focus_dio = focus->dio) != NULL) { 2036 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2037 hammer2_io_bkvasync(xop->focus_dio); 2038 } 2039 data = focus->data; 2040 lockmgr(&focus->diolk, LK_RELEASE); 2041 } else { 2042 data = focus->data; 2043 } 2044 2045 return data; 2046 } 2047 2048 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2049 2050 static __inline 2051 void 2052 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2053 { 2054 if (xop->focus_dio) 2055 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2056 } 2057 2058 static __inline 2059 void 2060 hammer2_knote(struct vnode *vp, int flags) 2061 { 2062 if (flags) 2063 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags); 2064 } 2065 2066 static __inline 2067 void 2068 hammer2_bulkfree_init(hammer2_dev_t *hmp) 2069 { 2070 } 2071 2072 static __inline 2073 void 2074 hammer2_bulkfree_uninit(hammer2_dev_t *hmp) 2075 { 2076 } 2077 2078 static __inline 2079 void 2080 hammer2_iocom_init(hammer2_dev_t *hmp) 2081 { 2082 } 2083 2084 static __inline 2085 void 2086 hammer2_iocom_uninit(hammer2_dev_t *hmp) 2087 { 2088 } 2089 2090 //#endif /* !_KERNEL */ 2091 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2092