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 m_vnode *devvp; 304 struct m_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 * Passed to hammer2_chain_create(), causes methods to be inherited from 370 * parent. 371 */ 372 #define HAMMER2_METH_DEFAULT -1 373 374 /* 375 * Special notes on flags: 376 * 377 * INITIAL - This flag allows a chain to be created and for storage to 378 * be allocated without having to immediately instantiate the 379 * related buffer. The data is assumed to be all-zeros. It 380 * is primarily used for indirect blocks. 381 * 382 * MODIFIED - The chain's media data has been modified. Prevents chain 383 * free on lastdrop if still in the topology. 384 * 385 * UPDATE - Chain might not be modified but parent blocktable needs 386 * an update. Prevents chain free on lastdrop if still in 387 * the topology. 388 * 389 * BLKMAPPED - Indicates that the chain is present in the parent blockmap. 390 * 391 * BLKMAPUPD - Indicates that the chain is present but needs to be updated 392 * in the parent blockmap. 393 */ 394 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 395 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 396 #define HAMMER2_CHAIN_DESTROY 0x00000004 397 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 398 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 399 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 400 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 401 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 402 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 403 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 404 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 405 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 406 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 407 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 408 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 409 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 410 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 411 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 412 #define HAMMER2_CHAIN_BLKMAPPED 0x00040000 /* present in blkmap */ 413 #define HAMMER2_CHAIN_BLKMAPUPD 0x00080000 /* +needs updating */ 414 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 415 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 416 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 417 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 418 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 419 420 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 421 HAMMER2_CHAIN_UPDATE | \ 422 HAMMER2_CHAIN_ONFLUSH | \ 423 HAMMER2_CHAIN_DESTROY) 424 425 /* 426 * Hammer2 error codes, used by chain->error and cluster->error. The error 427 * code is typically set on-lock unless no I/O was requested, and set on 428 * I/O otherwise. If set for a cluster it generally means that the cluster 429 * code could not find a valid copy to present. 430 * 431 * All H2 error codes are flags and can be accumulated by ORing them 432 * together. 433 * 434 * IO - An I/O error occurred 435 * CHECK - I/O succeeded but did not match the check code 436 * INCOMPLETE - A cluster is not complete enough to use, or 437 * a chain cannot be loaded because its parent has an error. 438 * 439 * NOTE: API allows callers to check zero/non-zero to determine if an error 440 * condition exists. 441 * 442 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 443 * NULL on other errors. Check chain->error, not chain->data. 444 */ 445 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 446 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 447 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 448 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 449 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 450 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 451 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 452 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 453 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 454 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 455 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 456 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 457 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 458 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 459 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 460 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 461 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 462 #define HAMMER2_ERROR_EDEADLK 0x00010000 463 #define HAMMER2_ERROR_ESRCH 0x00020000 464 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 465 466 /* 467 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 468 * 469 * NOTES: 470 * NODATA - Asks that the chain->data not be resolved in order 471 * to avoid I/O. 472 * 473 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 474 * the inode itself if the inode is in DIRECTDATA mode 475 * (i.e. file is <= 512 bytes). Used by the synchronization 476 * code to prevent confusion. 477 * 478 * SHARED - The input chain is expected to be locked shared, 479 * and the output chain is locked shared. 480 * 481 * MATCHIND - Allows an indirect block / freemap node to be returned 482 * when the passed key range matches the radix. Remember 483 * that key_end is inclusive (e.g. {0x000,0xFFF}, 484 * not {0x000,0x1000}). 485 * 486 * (Cannot be used for remote or cluster ops). 487 * 488 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 489 * missing, bulk file data is not resolved but inodes and 490 * other meta-data will. 491 */ 492 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 493 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 494 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 495 #define HAMMER2_LOOKUP_SHARED 0x00000100 496 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 497 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 498 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 499 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 500 501 /* 502 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 503 * 504 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 505 * blocks in the INITIAL-create state. 506 */ 507 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 508 509 /* 510 * Flags passed to hammer2_chain_lock() 511 * 512 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 513 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 514 * operation. 515 */ 516 #define HAMMER2_RESOLVE_NEVER 1 517 #define HAMMER2_RESOLVE_MAYBE 2 518 #define HAMMER2_RESOLVE_ALWAYS 3 519 #define HAMMER2_RESOLVE_MASK 0x0F 520 521 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 522 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 523 #define HAMMER2_RESOLVE_UNUSED40 0x40 524 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 525 526 /* 527 * Flags passed to hammer2_chain_delete() 528 */ 529 #define HAMMER2_DELETE_PERMANENT 0x0001 530 531 /* 532 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 533 * or hammer2_chain_create(). 534 */ 535 #define HAMMER2_INSERT_PFSROOT 0x0004 536 #define HAMMER2_INSERT_SAMEPARENT 0x0008 537 538 /* 539 * hammer2_freemap_adjust() 540 */ 541 #define HAMMER2_FREEMAP_DORECOVER 1 542 #if 0 543 #define HAMMER2_FREEMAP_DOMAYFREE 2 544 #define HAMMER2_FREEMAP_DOREALFREE 3 545 #endif 546 547 /* 548 * HAMMER2 cluster - A set of chains representing the same entity. 549 * 550 * hammer2_cluster typically represents a temporary set of representitive 551 * chains. The one exception is that a hammer2_cluster is embedded in 552 * hammer2_inode. This embedded cluster is ONLY used to track the 553 * representitive chains and cannot be directly locked. 554 * 555 * A cluster is usually temporary (and thus per-thread) for locking purposes, 556 * allowing us to embed the asynchronous storage required for cluster 557 * operations in the cluster itself and adjust the state and status without 558 * having to worry too much about SMP issues. 559 * 560 * The exception is the cluster embedded in the hammer2_inode structure. 561 * This is used to cache the cluster state on an inode-by-inode basis. 562 * Individual hammer2_chain structures not incorporated into clusters might 563 * also stick around to cache miscellanious elements. 564 * 565 * Because the cluster is a 'working copy' and is usually subject to cluster 566 * quorum rules, it is quite possible for us to end up with an insufficient 567 * number of live chains to execute an operation. If an insufficient number 568 * of chains remain in a working copy, the operation may have to be 569 * downgraded, retried, stall until the requisit number of chains are 570 * available, or possibly even error out depending on the mount type. 571 * 572 * A cluster's focus is set when it is locked. The focus can only be set 573 * to a chain still part of the synchronized set. 574 */ 575 #define HAMMER2_XOPFIFO 16 576 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 577 #define HAMMER2_XOPTHREADS_MIN 32 578 #define HAMMER2_XOPGROUPS_MIN 4 579 580 #define HAMMER2_MAXCLUSTER 8 581 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 582 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 583 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 584 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 585 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 586 587 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 588 589 struct hammer2_cluster_item { 590 hammer2_chain_t *chain; 591 int error; 592 uint32_t flags; 593 }; 594 595 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 596 597 /* 598 * INVALID - Invalid for focus, i.e. not part of synchronized set. 599 * Once set, this bit is sticky across operations. 600 * 601 * FEMOD - Indicates that front-end modifying operations can 602 * mess with this entry and MODSYNC will copy also 603 * effect it. 604 */ 605 #define HAMMER2_CITEM_INVALID 0x00000001 606 #define HAMMER2_CITEM_FEMOD 0x00000002 607 #define HAMMER2_CITEM_NULL 0x00000004 608 609 struct hammer2_cluster { 610 int refs; /* track for deallocation */ 611 int ddflag; 612 struct hammer2_pfs *pmp; 613 uint32_t flags; 614 int nchains; 615 int error; /* error code valid on lock */ 616 int focus_index; 617 hammer2_chain_t *focus; /* current focus (or mod) */ 618 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 619 }; 620 621 typedef struct hammer2_cluster hammer2_cluster_t; 622 623 /* 624 * WRHARD - Hard mounts can write fully synchronized 625 * RDHARD - Hard mounts can read fully synchronized 626 * UNHARD - Unsynchronized masters present 627 * NOHARD - No masters visible 628 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 629 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 630 * UNSOFT - Unsynchronized slaves present 631 * NOSOFT - No slaves visible 632 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 633 * MSYNCED - All masters are fully synchronized 634 * SSYNCED - All known local slaves are fully synchronized to masters 635 * 636 * All available masters are always incorporated. All PFSs belonging to a 637 * cluster (master, slave, copy, whatever) always try to synchronize the 638 * total number of known masters in the PFSs root inode. 639 * 640 * A cluster might have access to many slaves, copies, or caches, but we 641 * have a limited number of cluster slots. Any such elements which are 642 * directly mounted from block device(s) will always be incorporated. Note 643 * that SSYNCED only applies to such elements which are directly mounted, 644 * not to any remote slaves, copies, or caches that could be available. These 645 * bits are used to monitor and drive our synchronization threads. 646 * 647 * When asking the question 'is any data accessible at all', then a simple 648 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 649 * these bits are set the object can be read with certain caveats: 650 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 651 * and RDSLAVE - not authoritative, has some data but it could be old or 652 * incomplete. 653 * 654 * When both soft and hard mounts are available, data will be read and written 655 * via the soft mount only. But all might be in the cluster because 656 * background synchronization threads still need to do their work. 657 */ 658 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 659 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 660 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 661 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 662 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 663 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 664 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 665 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 666 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 667 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 668 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 669 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 670 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 671 672 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 673 HAMMER2_CLUSTER_RDSOFT | \ 674 HAMMER2_CLUSTER_RDSLAVE) 675 #if 0 676 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 677 HAMMER2_CLUSTER_RDSOFT) 678 679 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 680 HAMMER2_CLUSTER_WRSOFT) 681 #endif 682 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 683 HAMMER2_CLUSTER_RDHARD | \ 684 HAMMER2_CLUSTER_WRSOFT | \ 685 HAMMER2_CLUSTER_RDSOFT | \ 686 HAMMER2_CLUSTER_MSYNCED | \ 687 HAMMER2_CLUSTER_SSYNCED) 688 689 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 690 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 691 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 692 693 struct hammer2_depend { 694 TAILQ_ENTRY(hammer2_depend) entry; 695 struct inoq_head sideq; 696 long count; 697 int pass2; 698 int unused01; 699 }; 700 701 typedef struct hammer2_depend hammer2_depend_t; 702 703 /* 704 * A hammer2 inode. 705 * 706 * NOTE: The inode-embedded cluster is never used directly for I/O (since 707 * it may be shared). Instead it will be replicated-in and synchronized 708 * back out if changed. 709 */ 710 struct hammer2_inode { 711 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 712 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 713 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 714 hammer2_depend_t depend_static; /* (in-place allocation) */ 715 hammer2_mtx_t lock; /* inode lock */ 716 hammer2_mtx_t truncate_lock; /* prevent truncates */ 717 struct hammer2_pfs *pmp; /* PFS mount */ 718 struct m_vnode *vp; 719 hammer2_spin_t cluster_spin; /* update cluster */ 720 hammer2_cluster_t cluster; 721 //struct lockf advlock; 722 u_int flags; 723 u_int refs; /* +vpref, +flushref */ 724 int ihash; /* xop worker distribution */ 725 uint8_t comp_heuristic; 726 hammer2_inode_meta_t meta; /* copy of meta-data */ 727 hammer2_off_t osize; 728 }; 729 730 typedef struct hammer2_inode hammer2_inode_t; 731 732 /* 733 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 734 * RESIZED - Inode truncated (any) or inode extended beyond 735 * EMBEDDED_BYTES. 736 * 737 * SYNCQ - Inode is included in the current filesystem sync. The 738 * DELETING and CREATING flags will be acted upon. 739 * 740 * SIDEQ - Inode has likely been disconnected from the vnode topology 741 * and so is not visible to the vnode-based filesystem syncer 742 * code, but is dirty and must be included in the next 743 * filesystem sync. These inodes are moved to the SYNCQ at 744 * the time the sync occurs. 745 * 746 * Inodes are not placed on this queue simply because they have 747 * become dirty, if a vnode is attached. 748 * 749 * DELETING - Inode is flagged for deletion during the next filesystem 750 * sync. That is, the inode's chain is currently connected 751 * and must be deleting during the current or next fs sync. 752 * 753 * CREATING - Inode is flagged for creation during the next filesystem 754 * sync. That is, the inode's chain topology exists (so 755 * kernel buffer flushes can occur), but is currently 756 * disconnected and must be inserted during the current or 757 * next fs sync. If the DELETING flag is also set, the 758 * topology can be thrown away instead. 759 * 760 * If an inode that is already part of the current filesystem sync is 761 * modified by the frontend, including by buffer flushes, the inode lock 762 * code detects the SYNCQ flag and moves the inode to the head of the 763 * flush-in-progress, then blocks until the flush has gotten past it. 764 */ 765 #define HAMMER2_INODE_MODIFIED 0x0001 766 #define HAMMER2_INODE_UNUSED0002 0x0002 767 #define HAMMER2_INODE_UNUSED0004 0x0004 768 #define HAMMER2_INODE_ONRBTREE 0x0008 769 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 770 #define HAMMER2_INODE_UNUSED0020 0x0020 771 #define HAMMER2_INODE_ISUNLINKED 0x0040 772 #define HAMMER2_INODE_UNUSED0080 0x0080 773 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 774 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 775 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 776 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 777 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 778 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 779 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 780 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 781 782 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 783 HAMMER2_INODE_DIRTYDATA | \ 784 HAMMER2_INODE_DELETING | \ 785 HAMMER2_INODE_CREATING) 786 787 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 788 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 789 hammer2_tid_t); 790 791 /* 792 * Transaction management sub-structure under hammer2_pfs 793 */ 794 struct hammer2_trans { 795 uint32_t flags; 796 uint32_t sync_wait; 797 }; 798 799 typedef struct hammer2_trans hammer2_trans_t; 800 801 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 802 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 803 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 804 #define HAMMER2_TRANS_UNUSED10 0x10000000 805 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 806 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 807 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 808 809 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 810 #define HAMMER2_FREEMAP_HEUR_TYPES 8 811 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 812 HAMMER2_FREEMAP_HEUR_TYPES) 813 814 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 815 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 816 817 #define HAMMER2_FLUSH_TOP 0x0001 818 #define HAMMER2_FLUSH_ALL 0x0002 819 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 820 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 821 822 823 /* 824 * Hammer2 support thread element. 825 * 826 * Potentially many support threads can hang off of hammer2, primarily 827 * off the hammer2_pfs structure. Typically: 828 * 829 * td x Nodes A synchronization thread for each node. 830 * td x Nodes x workers Worker threads for frontend operations. 831 * td x 1 Bioq thread for logical buffer writes. 832 * 833 * In addition, the synchronization thread(s) associated with the 834 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 835 * and dedup scans. 836 */ 837 struct hammer2_thread { 838 struct hammer2_pfs *pmp; 839 struct hammer2_dev *hmp; 840 hammer2_xop_list_t xopq; 841 thread_t td; 842 uint32_t flags; 843 int clindex; /* cluster element index */ 844 int repidx; 845 char *scratch; /* MAXPHYS */ 846 }; 847 848 typedef struct hammer2_thread hammer2_thread_t; 849 850 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 851 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 852 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 853 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 854 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 855 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 856 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 857 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 858 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 859 #define HAMMER2_THREAD_UNFREEZE 0x0200 860 861 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 862 HAMMER2_THREAD_REMASTER | \ 863 HAMMER2_THREAD_STOP | \ 864 HAMMER2_THREAD_FREEZE | \ 865 HAMMER2_THREAD_XOPQ) 866 867 /* 868 * Support structure for dedup heuristic. 869 */ 870 struct hammer2_dedup { 871 hammer2_off_t data_off; 872 uint64_t data_crc; 873 uint32_t ticks; 874 uint32_t saved_error; 875 }; 876 877 typedef struct hammer2_dedup hammer2_dedup_t; 878 879 /* 880 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 881 * 882 * This structure is used to distribute a VOP operation across multiple 883 * nodes. It provides a rendezvous for concurrent node execution and 884 * can be detached from the frontend operation to allow the frontend to 885 * return early. 886 * 887 * This structure also sequences operations on up to three inodes. 888 */ 889 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 890 int clindex); 891 892 struct hammer2_xop_desc { 893 hammer2_xop_func_t storage_func; /* local storage function */ 894 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 895 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 896 const char *id; 897 }; 898 899 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 900 901 struct hammer2_xop_fifo { 902 TAILQ_ENTRY(hammer2_xop_head) entry; 903 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 904 int errors[HAMMER2_XOPFIFO]; 905 int ri; 906 int wi; 907 int flags; 908 hammer2_thread_t *thr; 909 }; 910 911 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 912 913 #define HAMMER2_XOP_FIFO_RUN 0x0001 914 #define HAMMER2_XOP_FIFO_STALL 0x0002 915 916 struct hammer2_xop_head { 917 hammer2_xop_desc_t *desc; 918 hammer2_tid_t mtid; 919 struct hammer2_inode *ip1; 920 struct hammer2_inode *ip2; 921 struct hammer2_inode *ip3; 922 struct hammer2_inode *ip4; 923 uint64_t run_mask; 924 uint64_t chk_mask; 925 int flags; 926 int state; 927 int error; 928 hammer2_key_t collect_key; 929 char *name1; 930 size_t name1_len; 931 char *name2; 932 size_t name2_len; 933 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 934 hammer2_cluster_t cluster; /* help collections */ 935 hammer2_io_t *focus_dio; 936 }; 937 938 typedef struct hammer2_xop_head hammer2_xop_head_t; 939 940 struct hammer2_xop_ipcluster { 941 hammer2_xop_head_t head; 942 }; 943 944 struct hammer2_xop_strategy { 945 hammer2_xop_head_t head; 946 hammer2_key_t lbase; 947 int finished; 948 hammer2_mtx_t lock; 949 struct bio *bio; 950 }; 951 952 struct hammer2_xop_readdir { 953 hammer2_xop_head_t head; 954 hammer2_key_t lkey; 955 }; 956 957 struct hammer2_xop_nresolve { 958 hammer2_xop_head_t head; 959 hammer2_key_t lhc; /* if name is NULL used lhc */ 960 }; 961 962 struct hammer2_xop_unlink { 963 hammer2_xop_head_t head; 964 int isdir; 965 int dopermanent; 966 }; 967 968 #define H2DOPERM_PERMANENT 0x01 969 #define H2DOPERM_FORCE 0x02 970 #define H2DOPERM_IGNINO 0x04 971 972 struct hammer2_xop_nrename { 973 hammer2_xop_head_t head; 974 hammer2_tid_t lhc; 975 int ip_key; 976 }; 977 978 struct hammer2_xop_scanlhc { 979 hammer2_xop_head_t head; 980 hammer2_key_t lhc; 981 }; 982 983 struct hammer2_xop_scanall { 984 hammer2_xop_head_t head; 985 hammer2_key_t key_beg; /* inclusive */ 986 hammer2_key_t key_end; /* inclusive */ 987 int resolve_flags; 988 int lookup_flags; 989 }; 990 991 struct hammer2_xop_lookup { 992 hammer2_xop_head_t head; 993 hammer2_key_t lhc; 994 }; 995 996 struct hammer2_xop_mkdirent { 997 hammer2_xop_head_t head; 998 hammer2_dirent_head_t dirent; 999 hammer2_key_t lhc; 1000 }; 1001 1002 struct hammer2_xop_create { 1003 hammer2_xop_head_t head; 1004 hammer2_inode_meta_t meta; /* initial metadata */ 1005 hammer2_key_t lhc; 1006 int flags; 1007 }; 1008 1009 struct hammer2_xop_destroy { 1010 hammer2_xop_head_t head; 1011 }; 1012 1013 struct hammer2_xop_fsync { 1014 hammer2_xop_head_t head; 1015 hammer2_inode_meta_t meta; 1016 hammer2_off_t osize; 1017 u_int ipflags; 1018 int clear_directdata; 1019 }; 1020 1021 struct hammer2_xop_unlinkall { 1022 hammer2_xop_head_t head; 1023 hammer2_key_t key_beg; 1024 hammer2_key_t key_end; 1025 }; 1026 1027 struct hammer2_xop_connect { 1028 hammer2_xop_head_t head; 1029 hammer2_key_t lhc; 1030 }; 1031 1032 struct hammer2_xop_flush { 1033 hammer2_xop_head_t head; 1034 }; 1035 1036 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1037 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1038 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1039 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1040 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1041 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1042 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1043 typedef struct hammer2_xop_create hammer2_xop_create_t; 1044 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1045 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1046 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1047 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1048 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1049 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1050 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1051 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1052 1053 union hammer2_xop { 1054 hammer2_xop_head_t head; 1055 hammer2_xop_ipcluster_t xop_ipcluster; 1056 hammer2_xop_readdir_t xop_readdir; 1057 hammer2_xop_nresolve_t xop_nresolve; 1058 hammer2_xop_unlink_t xop_unlink; 1059 hammer2_xop_nrename_t xop_nrename; 1060 hammer2_xop_strategy_t xop_strategy; 1061 hammer2_xop_mkdirent_t xop_mkdirent; 1062 hammer2_xop_create_t xop_create; 1063 hammer2_xop_destroy_t xop_destroy; 1064 hammer2_xop_fsync_t xop_fsync; 1065 hammer2_xop_unlinkall_t xop_unlinkall; 1066 hammer2_xop_scanlhc_t xop_scanlhc; 1067 hammer2_xop_scanall_t xop_scanall; 1068 hammer2_xop_lookup_t xop_lookup; 1069 hammer2_xop_flush_t xop_flush; 1070 hammer2_xop_connect_t xop_connect; 1071 }; 1072 1073 typedef union hammer2_xop hammer2_xop_t; 1074 1075 /* 1076 * hammer2_xop_group - Manage XOP support threads. 1077 */ 1078 struct hammer2_xop_group { 1079 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1080 }; 1081 1082 typedef struct hammer2_xop_group hammer2_xop_group_t; 1083 1084 /* 1085 * flags to hammer2_xop_collect() 1086 */ 1087 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1088 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1089 1090 /* 1091 * flags to hammer2_xop_alloc() 1092 * 1093 * MODIFYING - This is a modifying transaction, allocate a mtid. 1094 */ 1095 #define HAMMER2_XOP_MODIFYING 0x00000001 1096 #define HAMMER2_XOP_STRATEGY 0x00000002 1097 #define HAMMER2_XOP_INODE_STOP 0x00000004 1098 #define HAMMER2_XOP_VOLHDR 0x00000008 1099 #define HAMMER2_XOP_FSSYNC 0x00000010 1100 1101 /* 1102 * Device vnode management structure 1103 */ 1104 struct hammer2_devvp { 1105 TAILQ_ENTRY(hammer2_devvp) entry; 1106 struct m_vnode *devvp; /* device vnode */ 1107 char *path; /* device vnode path */ 1108 int open; /* 1 if devvp open */ 1109 }; 1110 1111 typedef struct hammer2_devvp hammer2_devvp_t; 1112 1113 TAILQ_HEAD(hammer2_devvp_list, hammer2_devvp); 1114 1115 typedef struct hammer2_devvp_list hammer2_devvp_list_t; 1116 1117 /* 1118 * Volume management structure 1119 */ 1120 struct hammer2_vfsvolume { 1121 hammer2_devvp_t *dev; /* device vnode management */ 1122 int id; /* volume id */ 1123 hammer2_off_t offset; /* offset within volumes */ 1124 hammer2_off_t size; /* volume size */ 1125 }; 1126 1127 typedef struct hammer2_vfsvolume hammer2_vfsvolume_t; 1128 1129 /* 1130 * Global (per partition) management structure, represents a hard block 1131 * device. Typically referenced by hammer2_chain structures when applicable. 1132 * Typically not used for network-managed elements. 1133 * 1134 * Note that a single hammer2_dev can be indirectly tied to multiple system 1135 * mount points. There is no direct relationship. System mounts are 1136 * per-cluster-id, not per-block-device, and a single hard mount might contain 1137 * many PFSs and those PFSs might combine together in various ways to form 1138 * the set of available clusters. 1139 */ 1140 struct hammer2_dev { 1141 struct m_vnode *devvp; /* device vnode for root volume */ 1142 int ronly; /* read-only mount */ 1143 int mount_count; /* number of actively mounted PFSs */ 1144 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1145 1146 struct malloc_type *mchain_obj; 1147 struct malloc_type *mio_obj; 1148 struct malloc_type *mmsg; 1149 //kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1150 hammer2_spin_t io_spin; /* iotree, iolruq access */ 1151 struct hammer2_io_tree iotree; 1152 int iofree_count; 1153 int freemap_relaxed; 1154 hammer2_chain_t vchain; /* anchor chain (topology) */ 1155 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1156 hammer2_spin_t list_spin; 1157 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1158 struct lock vollk; /* lockmgr lock */ 1159 struct lock bulklk; /* bulkfree operation lock */ 1160 struct lock bflock; /* bulk-free manual function lock */ 1161 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1162 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1163 int volhdrno; /* last volhdrno written */ 1164 uint32_t hflags; /* HMNT2 flags applicable to device */ 1165 hammer2_off_t free_reserved; /* nominal free reserved */ 1166 hammer2_off_t total_size; /* total size of volumes */ 1167 int nvolumes; /* total number of volumes */ 1168 hammer2_thread_t bfthr; /* bulk-free thread */ 1169 char devrepname[64]; /* for kprintf */ 1170 hammer2_volume_data_t voldata; 1171 hammer2_volume_data_t volsync; /* synchronized voldata */ 1172 1173 hammer2_devvp_list_t devvpl; /* list of device vnodes including *devvp */ 1174 hammer2_vfsvolume_t volumes[HAMMER2_MAX_VOLUMES]; /* list of volumes */ 1175 }; 1176 1177 typedef struct hammer2_dev hammer2_dev_t; 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 netexport export; /* nfs export */ 1229 int unused00; 1230 int ronly; /* read-only mount */ 1231 int hflags; /* pfs-specific mount flags */ 1232 struct malloc_type *minode_obj; 1233 hammer2_spin_t inum_spin; /* inumber lookup */ 1234 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1235 long inum_count; /* #of inodes in inum_tree */ 1236 hammer2_spin_t lru_spin; 1237 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1238 int lru_count; /* #of chains on LRU */ 1239 int flags; 1240 hammer2_tid_t modify_tid; /* modify transaction id */ 1241 hammer2_tid_t inode_tid; /* inode allocator */ 1242 uint8_t pfs_nmasters; /* total masters */ 1243 uint8_t pfs_mode; /* operating mode PFSMODE */ 1244 uint8_t unused01; 1245 uint8_t unused02; 1246 int free_ticks; /* free_* calculations */ 1247 long inmem_inodes; 1248 hammer2_off_t free_reserved; 1249 hammer2_off_t free_nominal; 1250 uint32_t inmem_dirty_chains; 1251 int count_lwinprog; /* logical write in prog */ 1252 hammer2_spin_t list_spin; 1253 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1254 struct depq_head depq; /* SIDEQ flagged inodes */ 1255 long sideq_count; /* total inodes on depq */ 1256 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1257 uint32_t cluster_flags; /* cached cluster flags */ 1258 int has_xop_threads; 1259 hammer2_spin_t xop_spin; /* xop sequencer */ 1260 hammer2_xop_group_t *xop_groups; 1261 }; 1262 1263 typedef struct hammer2_pfs hammer2_pfs_t; 1264 1265 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1266 1267 /* 1268 * pmp->flags 1269 */ 1270 #define HAMMER2_PMPF_SPMP 0x00000001 1271 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1272 1273 /* 1274 * NOTE: The LRU list contains at least all the chains with refs == 0 1275 * that can be recycled, and may contain additional chains which 1276 * cannot. 1277 */ 1278 #define HAMMER2_LRU_LIMIT 4096 1279 1280 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1281 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1282 1283 #define HAMMER2_LWINPROG_WAITING 0x80000000 1284 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1285 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1286 1287 /* 1288 * hammer2_cluster_check 1289 */ 1290 #define HAMMER2_CHECK_NULL 0x00000001 1291 1292 /* 1293 * Misc 1294 */ 1295 //#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1296 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1297 //#endif 1298 1299 //#if defined(_KERNEL) 1300 1301 #ifdef MALLOC_DECLARE 1302 MALLOC_DECLARE(M_HAMMER2); 1303 #endif 1304 1305 static __inline 1306 hammer2_pfs_t * 1307 MPTOPMP(struct mount *mp) 1308 { 1309 return ((hammer2_pfs_t *)mp->mnt_data); 1310 } 1311 1312 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1313 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1314 1315 static __inline 1316 uint64_t 1317 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1318 { 1319 int bbeg; 1320 int bits; 1321 uint64_t mask; 1322 1323 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1324 HAMMER2_DEDUP_FRAGRADIX; 1325 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1326 HAMMER2_DEDUP_FRAGRADIX); 1327 if (bbeg + bits == 64) 1328 mask = (uint64_t)-1; 1329 else 1330 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1331 1332 mask &= ~(((uint64_t)1 << bbeg) - 1); 1333 1334 return mask; 1335 } 1336 1337 static __inline 1338 int 1339 hammer2_error_to_errno(int error) 1340 { 1341 if (error) { 1342 if (error & HAMMER2_ERROR_EIO) 1343 error = EIO; 1344 else if (error & HAMMER2_ERROR_CHECK) 1345 error = EDOM; 1346 else if (error & HAMMER2_ERROR_ABORTED) 1347 error = EINTR; 1348 else if (error & HAMMER2_ERROR_BADBREF) 1349 error = EIO; 1350 else if (error & HAMMER2_ERROR_ENOSPC) 1351 error = ENOSPC; 1352 else if (error & HAMMER2_ERROR_ENOENT) 1353 error = ENOENT; 1354 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1355 error = ENOTEMPTY; 1356 else if (error & HAMMER2_ERROR_EAGAIN) 1357 error = EAGAIN; 1358 else if (error & HAMMER2_ERROR_ENOTDIR) 1359 error = ENOTDIR; 1360 else if (error & HAMMER2_ERROR_EISDIR) 1361 error = EISDIR; 1362 else if (error & HAMMER2_ERROR_EINPROGRESS) 1363 error = EINPROGRESS; 1364 else if (error & HAMMER2_ERROR_EEXIST) 1365 error = EEXIST; 1366 else if (error & HAMMER2_ERROR_EINVAL) 1367 error = EINVAL; 1368 else if (error & HAMMER2_ERROR_EDEADLK) 1369 error = EDEADLK; 1370 else if (error & HAMMER2_ERROR_ESRCH) 1371 error = ESRCH; 1372 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1373 error = ETIMEDOUT; 1374 else 1375 error = EDOM; 1376 } 1377 return error; 1378 } 1379 1380 static __inline 1381 int 1382 hammer2_errno_to_error(int error) 1383 { 1384 switch(error) { 1385 case 0: 1386 return 0; 1387 case EIO: 1388 return HAMMER2_ERROR_EIO; 1389 case EDOM: 1390 return HAMMER2_ERROR_CHECK; 1391 case EINTR: 1392 return HAMMER2_ERROR_ABORTED; 1393 //case EIO: 1394 // return HAMMER2_ERROR_BADBREF; 1395 case ENOSPC: 1396 return HAMMER2_ERROR_ENOSPC; 1397 case ENOENT: 1398 return HAMMER2_ERROR_ENOENT; 1399 case ENOTEMPTY: 1400 return HAMMER2_ERROR_ENOTEMPTY; 1401 case EAGAIN: 1402 return HAMMER2_ERROR_EAGAIN; 1403 case ENOTDIR: 1404 return HAMMER2_ERROR_ENOTDIR; 1405 case EISDIR: 1406 return HAMMER2_ERROR_EISDIR; 1407 case EINPROGRESS: 1408 return HAMMER2_ERROR_EINPROGRESS; 1409 case EEXIST: 1410 return HAMMER2_ERROR_EEXIST; 1411 case EINVAL: 1412 return HAMMER2_ERROR_EINVAL; 1413 case EDEADLK: 1414 return HAMMER2_ERROR_EDEADLK; 1415 case ESRCH: 1416 return HAMMER2_ERROR_ESRCH; 1417 case ETIMEDOUT: 1418 return HAMMER2_ERROR_ETIMEDOUT; 1419 default: 1420 return HAMMER2_ERROR_EINVAL; 1421 } 1422 } 1423 1424 1425 extern struct vop_ops hammer2_vnode_vops; 1426 extern struct vop_ops hammer2_spec_vops; 1427 extern struct vop_ops hammer2_fifo_vops; 1428 extern struct hammer2_pfslist hammer2_pfslist; 1429 extern struct lock hammer2_mntlk; 1430 1431 extern int hammer2_aux_flags; 1432 extern int hammer2_debug; 1433 extern int hammer2_xop_nthreads; 1434 extern int hammer2_xop_sgroups; 1435 extern int hammer2_xop_xgroups; 1436 extern int hammer2_xop_xbase; 1437 extern int hammer2_xop_mod; 1438 extern long hammer2_debug_inode; 1439 extern int hammer2_cluster_meta_read; 1440 extern int hammer2_cluster_data_read; 1441 extern int hammer2_cluster_write; 1442 extern int hammer2_dedup_enable; 1443 extern int hammer2_always_compress; 1444 extern int hammer2_flush_pipe; 1445 extern int hammer2_dio_count; 1446 extern int hammer2_dio_limit; 1447 extern int hammer2_bulkfree_tps; 1448 extern int hammer2_spread_workers; 1449 extern int hammer2_limit_saved_depth; 1450 extern long hammer2_chain_allocs; 1451 extern long hammer2_limit_saved_chains; 1452 extern long hammer2_limit_dirty_chains; 1453 extern long hammer2_limit_dirty_inodes; 1454 extern long hammer2_count_modified_chains; 1455 extern long hammer2_iod_file_read; 1456 extern long hammer2_iod_meta_read; 1457 extern long hammer2_iod_indr_read; 1458 extern long hammer2_iod_fmap_read; 1459 extern long hammer2_iod_volu_read; 1460 extern long hammer2_iod_file_write; 1461 extern long hammer2_iod_file_wembed; 1462 extern long hammer2_iod_file_wzero; 1463 extern long hammer2_iod_file_wdedup; 1464 extern long hammer2_iod_meta_write; 1465 extern long hammer2_iod_indr_write; 1466 extern long hammer2_iod_fmap_write; 1467 extern long hammer2_iod_volu_write; 1468 1469 extern long hammer2_process_icrc32; 1470 extern long hammer2_process_xxhash64; 1471 1472 extern struct objcache *cache_buffer_read; 1473 extern struct objcache *cache_buffer_write; 1474 extern struct objcache *cache_xops; 1475 1476 /* 1477 * hammer2_subr.c 1478 */ 1479 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1480 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1481 1482 int hammer2_signal_check(time_t *timep); 1483 const char *hammer2_error_str(int error); 1484 const char *hammer2_bref_type_str(int btype); 1485 1486 int hammer2_get_dtype(uint8_t type); 1487 int hammer2_get_vtype(uint8_t type); 1488 uint8_t hammer2_get_obj_type(enum vtype vtype); 1489 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1490 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1491 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1492 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1493 1494 hammer2_key_t hammer2_dirhash(const char *aname, size_t len); 1495 int hammer2_getradix(size_t bytes); 1496 1497 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1498 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1499 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1500 void hammer2_update_time(uint64_t *timep); 1501 void hammer2_adjreadcounter(int btype, size_t bytes); 1502 void hammer2_adjwritecounter(int btype, size_t bytes); 1503 1504 /* 1505 * hammer2_inode.c 1506 */ 1507 struct m_vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1508 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1509 hammer2_tid_t inum); 1510 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1511 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1512 void hammer2_inode_ref(hammer2_inode_t *ip); 1513 void hammer2_inode_drop(hammer2_inode_t *ip); 1514 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1515 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1516 int idx); 1517 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1518 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1519 void hammer2_inode_modify(hammer2_inode_t *ip); 1520 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1521 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1522 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1523 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1524 void hammer2_inode_unlock(hammer2_inode_t *ip); 1525 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1526 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1527 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1528 int clindex, hammer2_chain_t **parentp, int how); 1529 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1530 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1531 hammer2_mtx_state_t ostate); 1532 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1533 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1534 1535 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1536 struct vattr *vap, struct ucred *cred, 1537 hammer2_key_t inum, int *errorp); 1538 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1539 const char *name, size_t name_len, 1540 int *errorp); 1541 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1542 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1543 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1544 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1545 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, struct m_vnode **vpp); 1546 void hammer2_inode_vprecycle(struct m_vnode *vp); 1547 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1548 size_t name_len, hammer2_key_t inum, uint8_t type); 1549 1550 hammer2_key_t hammer2_pfs_inode_count(hammer2_pfs_t *pmp); 1551 int vflush(struct mount *mp, int rootrefs, int flags); 1552 1553 /* 1554 * hammer2_chain.c 1555 */ 1556 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1557 hammer2_pfs_t *pmp, 1558 hammer2_blockref_t *bref); 1559 void hammer2_chain_init(hammer2_chain_t *chain); 1560 void hammer2_chain_ref(hammer2_chain_t *chain); 1561 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1562 void hammer2_chain_drop(hammer2_chain_t *chain); 1563 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1564 void hammer2_chain_unhold(hammer2_chain_t *chain); 1565 void hammer2_chain_rehold(hammer2_chain_t *chain); 1566 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1567 //void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1568 void hammer2_chain_load_data(hammer2_chain_t *chain); 1569 1570 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1571 int clindex, int flags, 1572 hammer2_chain_t **parentp, 1573 hammer2_chain_t **chainp); 1574 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1575 hammer2_off_t dedup_off, int flags); 1576 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1577 hammer2_tid_t mtid, int flags); 1578 int hammer2_chain_resize(hammer2_chain_t *chain, 1579 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1580 int nradix, int flags); 1581 void hammer2_chain_unlock(hammer2_chain_t *chain); 1582 //void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1583 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1584 hammer2_blockref_t *bref, int how); 1585 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1586 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1587 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1588 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1589 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1590 hammer2_key_t *key_nextp, 1591 hammer2_key_t key_beg, hammer2_key_t key_end, 1592 int *errorp, int flags); 1593 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1594 hammer2_chain_t *chain, 1595 hammer2_key_t *key_nextp, 1596 hammer2_key_t key_beg, hammer2_key_t key_end, 1597 int *errorp, int flags); 1598 int hammer2_chain_scan(hammer2_chain_t *parent, 1599 hammer2_chain_t **chainp, 1600 hammer2_blockref_t *bref, 1601 int *firstp, int flags); 1602 1603 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1604 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1605 int methods, hammer2_key_t key, int keybits, 1606 int type, size_t bytes, hammer2_tid_t mtid, 1607 hammer2_off_t dedup_off, int flags); 1608 void hammer2_chain_rename(hammer2_chain_t **parentp, 1609 hammer2_chain_t *chain, 1610 hammer2_tid_t mtid, int flags); 1611 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1612 hammer2_tid_t mtid, int flags); 1613 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1614 hammer2_chain_t *chain); 1615 void hammer2_chain_setflush(hammer2_chain_t *chain); 1616 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1617 hammer2_blockref_t *base, int count); 1618 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1619 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1620 1621 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1622 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1623 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1624 size_t name_len); 1625 1626 void hammer2_base_delete(hammer2_chain_t *parent, 1627 hammer2_blockref_t *base, int count, 1628 hammer2_chain_t *chain, 1629 hammer2_blockref_t *obref); 1630 void hammer2_base_insert(hammer2_chain_t *parent, 1631 hammer2_blockref_t *base, int count, 1632 hammer2_chain_t *chain, 1633 hammer2_blockref_t *elm); 1634 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1635 char pfx, u_int flags); 1636 void hammer2_dump_chains(hammer2_dev_t *hmp, char vpfx, char fpfx); 1637 1638 /* 1639 * hammer2_flush.c 1640 */ 1641 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1642 int hammer2_flush(hammer2_chain_t *chain, int istop); 1643 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1644 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1645 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1646 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1647 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1648 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1649 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1650 1651 /* 1652 * hammer2_ioctl.c 1653 */ 1654 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1655 int fflag, struct ucred *cred); 1656 1657 /* 1658 * hammer2_io.c 1659 */ 1660 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1661 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1662 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1663 void hammer2_io_bkvasync(hammer2_io_t *dio); 1664 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1665 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1666 hammer2_off_t data_off, u_int bytes); 1667 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1668 u_int bytes); 1669 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1670 hammer2_io_t **diop); 1671 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1672 hammer2_io_t **diop); 1673 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1674 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1675 void hammer2_io_setdirty(hammer2_io_t *dio); 1676 1677 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1678 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1679 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1680 int lsize HAMMER2_IO_DEBUG_ARGS); 1681 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1682 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1683 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1684 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1685 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1686 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1687 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1688 1689 #ifndef HAMMER2_IO_DEBUG 1690 1691 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1692 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1693 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1694 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1695 #define hammer2_io_putblk(diop) \ 1696 _hammer2_io_putblk(diop) 1697 #define hammer2_io_bwrite(diop) \ 1698 _hammer2_io_bwrite((diop)) 1699 #define hammer2_io_bawrite(diop) \ 1700 _hammer2_io_bawrite((diop)) 1701 #define hammer2_io_bdwrite(diop) \ 1702 _hammer2_io_bdwrite((diop)) 1703 #define hammer2_io_brelse(diop) \ 1704 _hammer2_io_brelse((diop)) 1705 #define hammer2_io_bqrelse(diop) \ 1706 _hammer2_io_bqrelse((diop)) 1707 #define hammer2_io_ref(dio) \ 1708 _hammer2_io_ref((dio)) 1709 1710 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1711 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1712 1713 #else 1714 1715 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1716 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1717 __FILE__, __LINE__) 1718 1719 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1720 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1721 1722 #define hammer2_io_putblk(diop) \ 1723 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1724 1725 #define hammer2_io_bwrite(diop) \ 1726 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1727 #define hammer2_io_bawrite(diop) \ 1728 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1729 #define hammer2_io_bdwrite(diop) \ 1730 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1731 #define hammer2_io_brelse(diop) \ 1732 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1733 #define hammer2_io_bqrelse(diop) \ 1734 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1735 #define hammer2_io_ref(dio) \ 1736 _hammer2_io_ref((dio), __FILE__, __LINE__) 1737 1738 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1739 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1740 __FILE__, __LINE__) 1741 1742 #endif 1743 1744 /* 1745 * hammer2_admin.c 1746 */ 1747 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1748 void hammer2_thr_signal2(hammer2_thread_t *thr, 1749 uint32_t pflags, uint32_t nflags); 1750 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1751 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1752 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1753 void hammer2_thr_create(hammer2_thread_t *thr, 1754 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1755 const char *id, int clindex, int repidx, 1756 void (*func)(void *arg)); 1757 void hammer2_thr_delete(hammer2_thread_t *thr); 1758 void hammer2_thr_remaster(hammer2_thread_t *thr); 1759 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1760 void hammer2_thr_freeze(hammer2_thread_t *thr); 1761 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1762 int hammer2_thr_break(hammer2_thread_t *thr); 1763 void hammer2_primary_xops_thread(void *arg); 1764 1765 /* 1766 * hammer2_thread.c (XOP API) 1767 */ 1768 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1769 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1770 const char *name, size_t name_len); 1771 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1772 const char *name, size_t name_len); 1773 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1774 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1775 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1776 void hammer2_xop_setip4(hammer2_xop_head_t *xop, hammer2_inode_t *ip4); 1777 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1778 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1779 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1780 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1781 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1782 int notidx); 1783 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1784 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1785 int hammer2_xop_active(hammer2_xop_head_t *xop); 1786 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1787 int clindex, int error); 1788 1789 /* 1790 * hammer2_synchro.c 1791 */ 1792 void hammer2_primary_sync_thread(void *arg); 1793 1794 /* 1795 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1796 * may be integrated into other source files. 1797 */ 1798 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1799 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1800 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1801 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1802 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1803 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1804 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1805 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1806 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1807 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1808 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1809 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1810 void *scratch, int clindex); 1811 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1812 void *scratch, int clindex); 1813 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1814 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1815 int clindex); 1816 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1817 int clindex); 1818 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1819 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1820 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1821 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1822 1823 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1824 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1825 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1826 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1827 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1828 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1829 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1830 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1831 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1832 int clindex); 1833 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1834 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1835 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1836 int clindex); 1837 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1838 int clindex); 1839 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1843 int clindex); 1844 1845 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1847 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1848 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1849 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1850 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1851 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1852 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1853 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1854 int clindex); 1855 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1856 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1857 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1858 int clindex); 1859 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1860 int clindex); 1861 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1862 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1863 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1864 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1865 int clindex); 1866 1867 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1868 extern hammer2_xop_desc_t hammer2_readdir_desc; 1869 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1870 extern hammer2_xop_desc_t hammer2_unlink_desc; 1871 extern hammer2_xop_desc_t hammer2_nrename_desc; 1872 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1873 extern hammer2_xop_desc_t hammer2_scanall_desc; 1874 extern hammer2_xop_desc_t hammer2_lookup_desc; 1875 extern hammer2_xop_desc_t hammer2_delete_desc; 1876 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1877 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1878 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1879 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1880 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1881 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1882 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1883 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1884 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1885 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1886 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1887 1888 /* 1889 * hammer2_msgops.c 1890 */ 1891 /* 1892 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1893 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1894 */ 1895 1896 /* 1897 * hammer2_vfsops.c 1898 */ 1899 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1900 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1901 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1902 1903 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1904 const hammer2_inode_data_t *ripdata, 1905 hammer2_dev_t *force_local); 1906 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1907 int hammer2_vfs_vget(struct mount *mp, struct m_vnode *dvp, 1908 ino_t ino, struct m_vnode **vpp); 1909 int hammer2_vfs_root(struct mount *mp, struct m_vnode **vpp); 1910 1911 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1912 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1913 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1914 1915 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1916 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1917 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1918 1919 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1920 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1921 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1922 1923 int hammer2_vfs_init(void); 1924 int hammer2_vfs_uninit(void); 1925 1926 int hammer2_vfs_mount(struct m_vnode *makefs_devvp, struct mount *mp, 1927 const char *label, const struct hammer2_mount_info *mi); 1928 int hammer2_vfs_unmount(struct mount *mp, int mntflags); 1929 1930 /* 1931 * hammer2_freemap.c 1932 */ 1933 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1934 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1935 hammer2_blockref_t *bref, int how); 1936 1937 /* 1938 * hammer2_cluster.c 1939 */ 1940 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1941 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1942 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1943 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1944 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1945 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1946 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1947 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1948 int flags); 1949 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1950 1951 /* 1952 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1953 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1954 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1955 struct hammer2_ioc_bulkfree *bfi); 1956 */ 1957 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1958 hammer2_chain_t *chain); 1959 1960 /* 1961 * hammer2_iocom.c 1962 */ 1963 /* 1964 void hammer2_iocom_init(hammer2_dev_t *hmp); 1965 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1966 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1967 */ 1968 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1969 1970 /* 1971 * hammer2_strategy.c 1972 */ 1973 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1974 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1975 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1976 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1977 const char *data); 1978 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1979 1980 /* 1981 * hammer2_ondisk.c 1982 */ 1983 int hammer2_open_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1984 int hammer2_close_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1985 int hammer2_init_devvp(struct m_vnode *devvp, hammer2_devvp_list_t *devvpl); 1986 void hammer2_cleanup_devvp(hammer2_devvp_list_t *devvpl); 1987 int hammer2_init_vfsvolumes(struct mount *mp, const hammer2_devvp_list_t *devvpl, 1988 hammer2_vfsvolume_t *volumes, 1989 hammer2_volume_data_t *rootvoldata, 1990 int *rootvolzone, 1991 struct m_vnode **rootvoldevvp); 1992 hammer2_vfsvolume_t *hammer2_get_volume(hammer2_dev_t *hmp, hammer2_off_t offset); 1993 1994 /* 1995 * hammer2_vnops.c 1996 */ 1997 int hammer2_reclaim(struct m_vnode *vp); 1998 int hammer2_write(struct m_vnode *vp, void *buf, size_t size, off_t offset); 1999 int hammer2_nresolve(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen); 2000 int hammer2_nmkdir(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2001 mode_t mode); 2002 int hammer2_nlink(struct m_vnode *dvp, struct m_vnode *vp, char *name, int nlen); 2003 int hammer2_ncreate(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2004 mode_t mode); 2005 int hammer2_nmknod(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2006 int type, mode_t mode); 2007 int hammer2_nsymlink(struct m_vnode *dvp, struct m_vnode **vpp, char *name, int nlen, 2008 char *target, mode_t mode); 2009 2010 /* 2011 * hammer2_buf.c 2012 */ 2013 struct m_buf *getblkx(struct m_vnode *vp, off_t loffset, int size, int blkflags, 2014 int slptimeo); 2015 int breadx(struct m_vnode *vp, off_t loffset, int size, struct m_buf **bpp); 2016 int bread_kvabio(struct m_vnode *vp, off_t loffset, int size, struct m_buf **bpp); 2017 void bqrelse(struct m_buf *bp); 2018 int bawrite(struct m_buf *bp); 2019 int uiomovebp(struct m_buf *bp, caddr_t cp, size_t n, struct uio *uio); 2020 2021 /* 2022 * More complex inlines 2023 */ 2024 2025 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 2026 2027 static __inline 2028 const hammer2_media_data_t * 2029 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 2030 { 2031 hammer2_chain_t *focus; 2032 const void *data; 2033 2034 focus = xop->cluster.focus; 2035 if (focus->dio) { 2036 lockmgr(&focus->diolk, LK_SHARED); 2037 if ((xop->focus_dio = focus->dio) != NULL) { 2038 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2039 hammer2_io_bkvasync(xop->focus_dio); 2040 } 2041 data = focus->data; 2042 lockmgr(&focus->diolk, LK_RELEASE); 2043 } else { 2044 data = focus->data; 2045 } 2046 2047 return data; 2048 } 2049 2050 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2051 2052 static __inline 2053 void 2054 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2055 { 2056 if (xop->focus_dio) 2057 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2058 } 2059 2060 static __inline 2061 void 2062 hammer2_knote(struct m_vnode *vp, int flags) 2063 { 2064 if (flags) 2065 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags); 2066 } 2067 2068 static __inline 2069 void 2070 hammer2_bulkfree_init(hammer2_dev_t *hmp) 2071 { 2072 } 2073 2074 static __inline 2075 void 2076 hammer2_bulkfree_uninit(hammer2_dev_t *hmp) 2077 { 2078 } 2079 2080 static __inline 2081 void 2082 hammer2_iocom_init(hammer2_dev_t *hmp) 2083 { 2084 } 2085 2086 static __inline 2087 void 2088 hammer2_iocom_uninit(hammer2_dev_t *hmp) 2089 { 2090 } 2091 2092 //#endif /* !_KERNEL */ 2093 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2094