1 /* 2 * Copyright (c) 2011-2018 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@dragonflybsd.org> 6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 3. Neither the name of The DragonFly Project nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific, prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * HAMMER2 IN-MEMORY CACHE OF MEDIA STRUCTURES 38 * 39 * This header file contains structures used internally by the HAMMER2 40 * implementation. See hammer2_disk.h for on-disk structures. 41 * 42 * There is an in-memory representation of all on-media data structure. 43 * Almost everything is represented by a hammer2_chain structure in-memory. 44 * Other higher-level structures typically map to chains. 45 * 46 * A great deal of data is accessed simply via its buffer cache buffer, 47 * which is mapped for the duration of the chain's lock. Hammer2 must 48 * implement its own buffer cache layer on top of the system layer to 49 * allow for different threads to lock different sub-block-sized buffers. 50 * 51 * When modifications are made to a chain a new filesystem block must be 52 * allocated. Multiple modifications do not typically allocate new blocks 53 * until the current block has been flushed. Flushes do not block the 54 * front-end unless the front-end operation crosses the current inode being 55 * flushed. 56 * 57 * The in-memory representation may remain cached (for example in order to 58 * placemark clustering locks) even after the related data has been 59 * detached. 60 */ 61 62 #ifndef _VFS_HAMMER2_HAMMER2_H_ 63 #define _VFS_HAMMER2_HAMMER2_H_ 64 65 #ifdef _KERNEL 66 #include <sys/param.h> 67 #endif 68 #include <sys/types.h> 69 #ifdef _KERNEL 70 #include <sys/kernel.h> 71 #endif 72 #include <sys/conf.h> 73 #ifdef _KERNEL 74 #include <sys/systm.h> 75 #endif 76 #include <sys/diskslice.h> 77 #include <sys/tree.h> 78 #include <sys/malloc.h> 79 #include <sys/mount.h> 80 #include <sys/vnode.h> 81 #include <sys/proc.h> 82 #include <sys/mountctl.h> 83 #include <sys/priv.h> 84 #include <sys/stat.h> 85 #include <sys/thread.h> 86 #include <sys/globaldata.h> 87 #include <sys/lockf.h> 88 #include <sys/buf.h> 89 #include <sys/queue.h> 90 #include <sys/limits.h> 91 #include <sys/dmsg.h> 92 #include <sys/mutex.h> 93 #ifdef _KERNEL 94 #include <sys/kern_syscall.h> 95 #endif 96 97 #ifdef _KERNEL 98 #include <sys/signal2.h> 99 #include <sys/buf2.h> 100 #include <sys/mutex2.h> 101 #include <sys/spinlock2.h> 102 #endif 103 104 #include "hammer2_xxhash.h" 105 #include "hammer2_disk.h" 106 #include "hammer2_mount.h" 107 #include "hammer2_ioctl.h" 108 109 struct hammer2_io; 110 struct hammer2_chain; 111 struct hammer2_cluster; 112 struct hammer2_inode; 113 struct hammer2_depend; 114 struct hammer2_dev; 115 struct hammer2_pfs; 116 struct hammer2_span; 117 struct hammer2_msg; 118 struct hammer2_thread; 119 union hammer2_xop; 120 121 /* 122 * Mutex and lock shims. Hammer2 requires support for asynchronous and 123 * abortable locks, and both exclusive and shared spinlocks. Normal 124 * synchronous non-abortable locks can be substituted for spinlocks. 125 */ 126 typedef mtx_t hammer2_mtx_t; 127 typedef mtx_link_t hammer2_mtx_link_t; 128 typedef mtx_state_t hammer2_mtx_state_t; 129 130 typedef struct spinlock hammer2_spin_t; 131 132 #define hammer2_mtx_ex mtx_lock_ex_quick 133 #define hammer2_mtx_ex_try mtx_lock_ex_try 134 #define hammer2_mtx_sh mtx_lock_sh_quick 135 #define hammer2_mtx_sh_again mtx_lock_sh_again 136 #define hammer2_mtx_sh_try mtx_lock_sh_try 137 #define hammer2_mtx_unlock mtx_unlock 138 #define hammer2_mtx_downgrade mtx_downgrade 139 #define hammer2_mtx_owned mtx_owned 140 #define hammer2_mtx_init mtx_init 141 #define hammer2_mtx_temp_release mtx_lock_temp_release 142 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 143 #define hammer2_mtx_refs mtx_lockrefs 144 145 #define hammer2_spin_init spin_init 146 #define hammer2_spin_sh spin_lock_shared 147 #define hammer2_spin_ex spin_lock 148 #define hammer2_spin_unsh spin_unlock_shared 149 #define hammer2_spin_unex spin_unlock 150 151 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 152 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 153 154 typedef struct hammer2_xop_list hammer2_xop_list_t; 155 156 #ifdef _KERNEL 157 /* 158 * General lock support 159 */ 160 static __inline 161 int 162 hammer2_mtx_upgrade_try(hammer2_mtx_t *mtx) 163 { 164 return mtx_upgrade_try(mtx); 165 } 166 167 #endif 168 169 /* 170 * The xid tracks internal transactional updates. 171 * 172 * XXX fix-me, really needs to be 64-bits 173 */ 174 typedef uint32_t hammer2_xid_t; 175 176 #define HAMMER2_XID_MIN 0x00000000U 177 #define HAMMER2_XID_MAX 0x7FFFFFFFU 178 179 /* 180 * Cap the dynamic calculation for the maximum number of dirty 181 * chains and dirty inodes allowed. 182 */ 183 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 184 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 185 186 /* 187 * The chain structure tracks a portion of the media topology from the 188 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 189 * data blocks, and freemap nodes and leafs. 190 * 191 * The chain structure utilizes a simple singly-homed topology and the 192 * chain's in-memory topology will move around as the chains do, due mainly 193 * to renames and indirect block creation. 194 * 195 * Block Table Updates 196 * 197 * Block table updates for insertions and updates are delayed until the 198 * flush. This allows us to avoid having to modify the parent chain 199 * all the way to the root. 200 * 201 * Block table deletions are performed immediately (modifying the parent 202 * in the process) because the flush code uses the chain structure to 203 * track delayed updates and the chain will be (likely) gone or moved to 204 * another location in the topology after a deletion. 205 * 206 * A prior iteration of the code tried to keep the relationship intact 207 * on deletes by doing a delete-duplicate operation on the chain, but 208 * it added way too much complexity to the codebase. 209 * 210 * Flush Synchronization 211 * 212 * The flush code must flush modified chains bottom-up. Because chain 213 * structures can shift around and are NOT topologically stable, 214 * modified chains are independently indexed for the flush. As the flush 215 * runs it modifies (or further modifies) and updates the parents, 216 * propagating the flush all the way to the volume root. 217 * 218 * Modifying front-end operations can occur during a flush but will block 219 * in two cases: (1) when the front-end tries to operate on the inode 220 * currently in the midst of being flushed and (2) if the front-end 221 * crosses an inode currently being flushed (such as during a rename). 222 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 223 * the flusher is currently working on "a/b/c", the rename will block 224 * temporarily in order to ensure that "x" exists in one place or the 225 * other. 226 * 227 * Meta-data statistics are updated by the flusher. The front-end will 228 * make estimates but meta-data must be fully synchronized only during a 229 * flush in order to ensure that it remains correct across a crash. 230 * 231 * Multiple flush synchronizations can theoretically be in-flight at the 232 * same time but the implementation is not coded to handle the case and 233 * currently serializes them. 234 * 235 * Snapshots: 236 * 237 * Snapshots currently require the subdirectory tree being snapshotted 238 * to be flushed. The snapshot then creates a new super-root inode which 239 * copies the flushed blockdata of the directory or file that was 240 * snapshotted. 241 * 242 * Radix tree NOTES: 243 * 244 * - Note that the radix tree runs in powers of 2 only so sub-trees 245 * cannot straddle edges. 246 */ 247 RB_HEAD(hammer2_chain_tree, hammer2_chain); 248 249 struct hammer2_reptrack { 250 hammer2_spin_t spin; 251 struct hammer2_reptrack *next; 252 struct hammer2_chain *chain; 253 }; 254 255 /* 256 * Core topology for chain (embedded in chain). Protected by a spinlock. 257 */ 258 struct hammer2_chain_core { 259 hammer2_spin_t spin; 260 struct hammer2_reptrack *reptrack; 261 struct hammer2_chain_tree rbtree; /* sub-chains */ 262 int live_zero; /* blockref array opt */ 263 u_int live_count; /* live (not deleted) chains in tree */ 264 u_int chain_count; /* live + deleted chains under core */ 265 int generation; /* generation number (inserts only) */ 266 }; 267 268 typedef struct hammer2_chain_core hammer2_chain_core_t; 269 270 RB_HEAD(hammer2_io_tree, hammer2_io); 271 272 /* 273 * DIO - Management structure wrapping system buffer cache. 274 * 275 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 276 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 277 * structures. 278 */ 279 /* #define HAMMER2_IO_DEBUG */ 280 281 #ifdef HAMMER2_IO_DEBUG 282 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 283 #define HAMMER2_IO_DEBUG_CALL , file, line 284 #define HAMMER2_IO_DEBUG_COUNT 2048 285 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 286 #else 287 #define HAMMER2_IO_DEBUG_ARGS 288 #define HAMMER2_IO_DEBUG_CALL 289 #endif 290 291 struct hammer2_io { 292 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 293 struct hammer2_dev *hmp; 294 struct vnode *devvp; 295 struct buf *bp; 296 off_t dbase; /* offset of devvp within volumes */ 297 off_t pbase; 298 uint64_t refs; 299 int psize; 300 int act; /* activity */ 301 int btype; /* approximate BREF_TYPE_* */ 302 int ticks; 303 int error; 304 #ifdef HAMMER2_IO_DEBUG 305 int debug_index; 306 #else 307 int unused01; 308 #endif 309 uint64_t dedup_valid; /* valid for dedup operation */ 310 uint64_t dedup_alloc; /* allocated / de-dupable */ 311 #ifdef HAMMER2_IO_DEBUG 312 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 313 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 314 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 315 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 316 #endif 317 }; 318 319 typedef struct hammer2_io hammer2_io_t; 320 321 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 322 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 323 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 324 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 325 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 326 327 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 328 329 /* 330 * Primary chain structure keeps track of the topology in-memory. 331 */ 332 struct hammer2_chain { 333 hammer2_mtx_t lock; 334 hammer2_chain_core_t core; 335 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 336 hammer2_blockref_t bref; 337 struct hammer2_chain *parent; 338 struct hammer2_dev *hmp; 339 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 340 341 struct lock diolk; /* xop focus interlock */ 342 hammer2_io_t *dio; /* physical data buffer */ 343 hammer2_media_data_t *data; /* data pointer shortcut */ 344 u_int bytes; /* physical data size */ 345 u_int flags; 346 u_int refs; 347 u_int lockcnt; 348 int error; /* on-lock data error state */ 349 int cache_index; /* heur speeds up lookup */ 350 351 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 352 }; 353 354 typedef struct hammer2_chain hammer2_chain_t; 355 356 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 357 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 358 359 /* 360 * Special notes on flags: 361 * 362 * INITIAL - This flag allows a chain to be created and for storage to 363 * be allocated without having to immediately instantiate the 364 * related buffer. The data is assumed to be all-zeros. It 365 * is primarily used for indirect blocks. 366 * 367 * MODIFIED - The chain's media data has been modified. Prevents chain 368 * free on lastdrop if still in the topology. 369 * 370 * UPDATE - Chain might not be modified but parent blocktable needs 371 * an update. Prevents chain free on lastdrop if still in 372 * the topology. 373 * 374 * BMAPPED - Indicates that the chain is present in the parent blockmap. 375 * 376 * BMAPUPD - Indicates that the chain is present but needs to be updated 377 * in the parent blockmap. 378 */ 379 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 380 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 381 #define HAMMER2_CHAIN_DESTROY 0x00000004 382 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 383 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 384 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 385 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 386 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 387 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 388 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 389 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 390 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 391 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 392 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 393 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 394 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 395 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 396 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 397 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */ 398 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */ 399 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 400 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 401 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 402 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 403 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 404 405 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 406 HAMMER2_CHAIN_UPDATE | \ 407 HAMMER2_CHAIN_ONFLUSH | \ 408 HAMMER2_CHAIN_DESTROY) 409 410 /* 411 * Hammer2 error codes, used by chain->error and cluster->error. The error 412 * code is typically set on-lock unless no I/O was requested, and set on 413 * I/O otherwise. If set for a cluster it generally means that the cluster 414 * code could not find a valid copy to present. 415 * 416 * All H2 error codes are flags and can be accumulated by ORing them 417 * together. 418 * 419 * IO - An I/O error occurred 420 * CHECK - I/O succeeded but did not match the check code 421 * INCOMPLETE - A cluster is not complete enough to use, or 422 * a chain cannot be loaded because its parent has an error. 423 * 424 * NOTE: API allows callers to check zero/non-zero to determine if an error 425 * condition exists. 426 * 427 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 428 * NULL on other errors. Check chain->error, not chain->data. 429 */ 430 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 431 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 432 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 433 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 434 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 435 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 436 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 437 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 438 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 439 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 440 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 441 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 442 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 443 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 444 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 445 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 446 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 447 #define HAMMER2_ERROR_EDEADLK 0x00010000 448 #define HAMMER2_ERROR_ESRCH 0x00020000 449 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 450 451 /* 452 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 453 * 454 * NOTES: 455 * NODATA - Asks that the chain->data not be resolved in order 456 * to avoid I/O. 457 * 458 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 459 * the inode itself if the inode is in DIRECTDATA mode 460 * (i.e. file is <= 512 bytes). Used by the synchronization 461 * code to prevent confusion. 462 * 463 * SHARED - The input chain is expected to be locked shared, 464 * and the output chain is locked shared. 465 * 466 * MATCHIND - Allows an indirect block / freemap node to be returned 467 * when the passed key range matches the radix. Remember 468 * that key_end is inclusive (e.g. {0x000,0xFFF}, 469 * not {0x000,0x1000}). 470 * 471 * (Cannot be used for remote or cluster ops). 472 * 473 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 474 * missing, bulk file data is not resolved but inodes and 475 * other meta-data will. 476 */ 477 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 478 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 479 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 480 #define HAMMER2_LOOKUP_SHARED 0x00000100 481 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 482 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 483 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 484 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 485 486 /* 487 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 488 * 489 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 490 * blocks in the INITIAL-create state. 491 */ 492 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 493 494 /* 495 * Flags passed to hammer2_chain_lock() 496 * 497 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 498 * will be made to either the cluster being locked or any underlying 499 * cluster. It allows the cluster to lock and access data for a subset 500 * of available nodes instead of all available nodes. 501 * 502 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 503 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 504 * operation. 505 */ 506 #define HAMMER2_RESOLVE_NEVER 1 507 #define HAMMER2_RESOLVE_MAYBE 2 508 #define HAMMER2_RESOLVE_ALWAYS 3 509 #define HAMMER2_RESOLVE_MASK 0x0F 510 511 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 512 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 513 #define HAMMER2_RESOLVE_UNUSED40 0x40 514 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 515 516 /* 517 * Flags passed to hammer2_chain_delete() 518 */ 519 #define HAMMER2_DELETE_PERMANENT 0x0001 520 521 /* 522 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 523 * or hammer2_chain_create(). 524 */ 525 #define HAMMER2_INSERT_PFSROOT 0x0004 526 #define HAMMER2_INSERT_SAMEPARENT 0x0008 527 528 /* 529 * hammer2_freemap_adjust() 530 */ 531 #define HAMMER2_FREEMAP_DORECOVER 1 532 #define HAMMER2_FREEMAP_DOMAYFREE 2 533 #define HAMMER2_FREEMAP_DOREALFREE 3 534 535 /* 536 * HAMMER2 cluster - A set of chains representing the same entity. 537 * 538 * hammer2_cluster typically represents a temporary set of representitive 539 * chains. The one exception is that a hammer2_cluster is embedded in 540 * hammer2_inode. This embedded cluster is ONLY used to track the 541 * representitive chains and cannot be directly locked. 542 * 543 * A cluster is usually temporary (and thus per-thread) for locking purposes, 544 * allowing us to embed the asynchronous storage required for cluster 545 * operations in the cluster itself and adjust the state and status without 546 * having to worry too much about SMP issues. 547 * 548 * The exception is the cluster embedded in the hammer2_inode structure. 549 * This is used to cache the cluster state on an inode-by-inode basis. 550 * Individual hammer2_chain structures not incorporated into clusters might 551 * also stick around to cache miscellanious elements. 552 * 553 * Because the cluster is a 'working copy' and is usually subject to cluster 554 * quorum rules, it is quite possible for us to end up with an insufficient 555 * number of live chains to execute an operation. If an insufficient number 556 * of chains remain in a working copy, the operation may have to be 557 * downgraded, retried, stall until the requisit number of chains are 558 * available, or possibly even error out depending on the mount type. 559 * 560 * A cluster's focus is set when it is locked. The focus can only be set 561 * to a chain still part of the synchronized set. 562 */ 563 #define HAMMER2_XOPFIFO 16 564 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 565 #define HAMMER2_XOPGROUPS_MIN 32 566 567 #define HAMMER2_MAXCLUSTER 8 568 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 569 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 570 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 571 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 572 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 573 574 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 575 576 struct hammer2_cluster_item { 577 hammer2_chain_t *chain; 578 int error; 579 uint32_t flags; 580 }; 581 582 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 583 584 /* 585 * INVALID - Invalid for focus, i.e. not part of synchronized set. 586 * Once set, this bit is sticky across operations. 587 * 588 * FEMOD - Indicates that front-end modifying operations can 589 * mess with this entry and MODSYNC will copy also 590 * effect it. 591 */ 592 #define HAMMER2_CITEM_INVALID 0x00000001 593 #define HAMMER2_CITEM_FEMOD 0x00000002 594 #define HAMMER2_CITEM_NULL 0x00000004 595 596 struct hammer2_cluster { 597 int refs; /* track for deallocation */ 598 int ddflag; 599 struct hammer2_pfs *pmp; 600 uint32_t flags; 601 int nchains; 602 int error; /* error code valid on lock */ 603 int focus_index; 604 hammer2_chain_t *focus; /* current focus (or mod) */ 605 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 606 }; 607 608 typedef struct hammer2_cluster hammer2_cluster_t; 609 610 /* 611 * WRHARD - Hard mounts can write fully synchronized 612 * RDHARD - Hard mounts can read fully synchronized 613 * UNHARD - Unsynchronized masters present 614 * NOHARD - No masters visible 615 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 616 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 617 * UNSOFT - Unsynchronized slaves present 618 * NOSOFT - No slaves visible 619 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 620 * MSYNCED - All masters are fully synchronized 621 * SSYNCED - All known local slaves are fully synchronized to masters 622 * 623 * All available masters are always incorporated. All PFSs belonging to a 624 * cluster (master, slave, copy, whatever) always try to synchronize the 625 * total number of known masters in the PFSs root inode. 626 * 627 * A cluster might have access to many slaves, copies, or caches, but we 628 * have a limited number of cluster slots. Any such elements which are 629 * directly mounted from block device(s) will always be incorporated. Note 630 * that SSYNCED only applies to such elements which are directly mounted, 631 * not to any remote slaves, copies, or caches that could be available. These 632 * bits are used to monitor and drive our synchronization threads. 633 * 634 * When asking the question 'is any data accessible at all', then a simple 635 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 636 * these bits are set the object can be read with certain caveats: 637 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 638 * and RDSLAVE - not authoritative, has some data but it could be old or 639 * incomplete. 640 * 641 * When both soft and hard mounts are available, data will be read and written 642 * via the soft mount only. But all might be in the cluster because 643 * background synchronization threads still need to do their work. 644 */ 645 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 646 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 647 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 648 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 649 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 650 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 651 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 652 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 653 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 654 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 655 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 656 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 657 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 658 659 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 660 HAMMER2_CLUSTER_RDSOFT | \ 661 HAMMER2_CLUSTER_RDSLAVE) 662 663 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 664 HAMMER2_CLUSTER_RDSOFT) 665 666 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 667 HAMMER2_CLUSTER_WRSOFT) 668 669 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 670 HAMMER2_CLUSTER_RDHARD | \ 671 HAMMER2_CLUSTER_WRSOFT | \ 672 HAMMER2_CLUSTER_RDSOFT | \ 673 HAMMER2_CLUSTER_MSYNCED | \ 674 HAMMER2_CLUSTER_SSYNCED) 675 676 /* 677 * Helper functions (cluster must be locked for flags to be valid). 678 */ 679 static __inline 680 int 681 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 682 { 683 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 684 } 685 686 static __inline 687 int 688 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 689 { 690 return (cluster->flags & HAMMER2_CLUSTER_WROK); 691 } 692 693 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 694 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 695 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 696 697 struct hammer2_depend { 698 TAILQ_ENTRY(hammer2_depend) entry; 699 struct inoq_head sideq; 700 long count; 701 int pass2; 702 int unused01; 703 }; 704 705 typedef struct hammer2_depend hammer2_depend_t; 706 707 /* 708 * A hammer2 inode. 709 * 710 * NOTE: The inode-embedded cluster is never used directly for I/O (since 711 * it may be shared). Instead it will be replicated-in and synchronized 712 * back out if changed. 713 */ 714 struct hammer2_inode { 715 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 716 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 717 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 718 hammer2_depend_t depend_static; /* (in-place allocation) */ 719 hammer2_mtx_t lock; /* inode lock */ 720 hammer2_mtx_t truncate_lock; /* prevent truncates */ 721 struct hammer2_pfs *pmp; /* PFS mount */ 722 struct vnode *vp; 723 hammer2_spin_t cluster_spin; /* update cluster */ 724 hammer2_cluster_t cluster; 725 struct lockf advlock; 726 u_int flags; 727 u_int refs; /* +vpref, +flushref */ 728 uint8_t comp_heuristic; 729 hammer2_inode_meta_t meta; /* copy of meta-data */ 730 hammer2_off_t osize; 731 }; 732 733 typedef struct hammer2_inode hammer2_inode_t; 734 735 /* 736 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 737 * RESIZED - Inode truncated (any) or inode extended beyond 738 * EMBEDDED_BYTES. 739 * 740 * SYNCQ - Inode is included in the current filesystem sync. The 741 * DELETING and CREATING flags will be acted upon. 742 * 743 * SIDEQ - Inode has likely been disconnected from the vnode topology 744 * and so is not visible to the vnode-based filesystem syncer 745 * code, but is dirty and must be included in the next 746 * filesystem sync. These inodes are moved to the SYNCQ at 747 * the time the sync occurs. 748 * 749 * Inodes are not placed on this queue simply because they have 750 * become dirty, if a vnode is attached. 751 * 752 * DELETING - Inode is flagged for deletion during the next filesystem 753 * sync. That is, the inode's chain is currently connected 754 * and must be deleting during the current or next fs sync. 755 * 756 * CREATING - Inode is flagged for creation during the next filesystem 757 * sync. That is, the inode's chain topology exists (so 758 * kernel buffer flushes can occur), but is currently 759 * disconnected and must be inserted during the current or 760 * next fs sync. If the DELETING flag is also set, the 761 * topology can be thrown away instead. 762 * 763 * If an inode that is already part of the current filesystem sync is 764 * modified by the frontend, including by buffer flushes, the inode lock 765 * code detects the SYNCQ flag and moves the inode to the head of the 766 * flush-in-progress, then blocks until the flush has gotten past it. 767 */ 768 #define HAMMER2_INODE_MODIFIED 0x0001 769 #define HAMMER2_INODE_SROOT 0x0002 770 #define HAMMER2_INODE_UNUSED0004 0x0004 771 #define HAMMER2_INODE_ONRBTREE 0x0008 772 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 773 #define HAMMER2_INODE_UNUSED0020 0x0020 774 #define HAMMER2_INODE_ISUNLINKED 0x0040 775 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 776 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 777 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 778 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 779 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 780 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 781 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 782 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 783 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 784 785 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 786 HAMMER2_INODE_DIRTYDATA | \ 787 HAMMER2_INODE_DELETING | \ 788 HAMMER2_INODE_CREATING) 789 790 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 791 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 792 hammer2_tid_t); 793 794 /* 795 * Transaction management sub-structure under hammer2_pfs 796 */ 797 struct hammer2_trans { 798 uint32_t flags; 799 uint32_t sync_wait; 800 }; 801 802 typedef struct hammer2_trans hammer2_trans_t; 803 804 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 805 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 806 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 807 #define HAMMER2_TRANS_UNUSED10 0x10000000 808 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 809 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 810 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 811 812 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 813 #define HAMMER2_FREEMAP_HEUR_TYPES 8 814 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 815 HAMMER2_FREEMAP_HEUR_TYPES) 816 817 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 818 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 819 820 #define HAMMER2_FLUSH_TOP 0x0001 821 #define HAMMER2_FLUSH_ALL 0x0002 822 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 823 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 824 825 826 /* 827 * Hammer2 support thread element. 828 * 829 * Potentially many support threads can hang off of hammer2, primarily 830 * off the hammer2_pfs structure. Typically: 831 * 832 * td x Nodes A synchronization thread for each node. 833 * td x Nodes x workers Worker threads for frontend operations. 834 * td x 1 Bioq thread for logical buffer writes. 835 * 836 * In addition, the synchronization thread(s) associated with the 837 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 838 * and dedup scans. 839 */ 840 struct hammer2_thread { 841 struct hammer2_pfs *pmp; 842 struct hammer2_dev *hmp; 843 hammer2_xop_list_t xopq; 844 thread_t td; 845 uint32_t flags; 846 int depth; 847 int clindex; /* cluster element index */ 848 int repidx; 849 char *scratch; /* MAXPHYS */ 850 }; 851 852 typedef struct hammer2_thread hammer2_thread_t; 853 854 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 855 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 856 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 857 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 858 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 859 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 860 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 861 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 862 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 863 #define HAMMER2_THREAD_UNFREEZE 0x0200 864 865 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 866 HAMMER2_THREAD_REMASTER | \ 867 HAMMER2_THREAD_STOP | \ 868 HAMMER2_THREAD_FREEZE | \ 869 HAMMER2_THREAD_XOPQ) 870 871 /* 872 * Support structure for dedup heuristic. 873 */ 874 struct hammer2_dedup { 875 hammer2_off_t data_off; 876 uint64_t data_crc; 877 uint32_t ticks; 878 uint32_t saved_error; 879 }; 880 881 typedef struct hammer2_dedup hammer2_dedup_t; 882 883 /* 884 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 885 * 886 * This structure is used to distribute a VOP operation across multiple 887 * nodes. It provides a rendezvous for concurrent node execution and 888 * can be detached from the frontend operation to allow the frontend to 889 * return early. 890 * 891 * This structure also sequences operations on up to three inodes. 892 */ 893 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 894 int clindex); 895 896 struct hammer2_xop_desc { 897 hammer2_xop_func_t storage_func; /* local storage function */ 898 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 899 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 900 const char *id; 901 }; 902 903 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 904 905 struct hammer2_xop_fifo { 906 TAILQ_ENTRY(hammer2_xop_head) entry; 907 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 908 int errors[HAMMER2_XOPFIFO]; 909 int ri; 910 int wi; 911 int flags; 912 hammer2_thread_t *thr; 913 }; 914 915 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 916 917 #define HAMMER2_XOP_FIFO_RUN 0x0001 918 #define HAMMER2_XOP_FIFO_STALL 0x0002 919 920 struct hammer2_xop_head { 921 hammer2_xop_desc_t *desc; 922 hammer2_tid_t mtid; 923 struct hammer2_inode *ip1; 924 struct hammer2_inode *ip2; 925 struct hammer2_inode *ip3; 926 uint64_t run_mask; 927 uint64_t chk_mask; 928 int flags; 929 int state; 930 int error; 931 hammer2_key_t collect_key; 932 char *name1; 933 size_t name1_len; 934 char *name2; 935 size_t name2_len; 936 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 937 hammer2_cluster_t cluster; /* help collections */ 938 hammer2_io_t *focus_dio; 939 }; 940 941 typedef struct hammer2_xop_head hammer2_xop_head_t; 942 943 struct hammer2_xop_ipcluster { 944 hammer2_xop_head_t head; 945 }; 946 947 struct hammer2_xop_strategy { 948 hammer2_xop_head_t head; 949 hammer2_key_t lbase; 950 int finished; 951 hammer2_mtx_t lock; 952 struct bio *bio; 953 }; 954 955 struct hammer2_xop_readdir { 956 hammer2_xop_head_t head; 957 hammer2_key_t lkey; 958 }; 959 960 struct hammer2_xop_nresolve { 961 hammer2_xop_head_t head; 962 hammer2_key_t lhc; /* if name is NULL used lhc */ 963 }; 964 965 struct hammer2_xop_unlink { 966 hammer2_xop_head_t head; 967 int isdir; 968 int dopermanent; 969 }; 970 971 #define H2DOPERM_PERMANENT 0x01 972 #define H2DOPERM_FORCE 0x02 973 #define H2DOPERM_IGNINO 0x04 974 975 struct hammer2_xop_nrename { 976 hammer2_xop_head_t head; 977 hammer2_tid_t lhc; 978 int ip_key; 979 }; 980 981 struct hammer2_xop_scanlhc { 982 hammer2_xop_head_t head; 983 hammer2_key_t lhc; 984 }; 985 986 struct hammer2_xop_scanall { 987 hammer2_xop_head_t head; 988 hammer2_key_t key_beg; /* inclusive */ 989 hammer2_key_t key_end; /* inclusive */ 990 int resolve_flags; 991 int lookup_flags; 992 }; 993 994 struct hammer2_xop_lookup { 995 hammer2_xop_head_t head; 996 hammer2_key_t lhc; 997 }; 998 999 struct hammer2_xop_mkdirent { 1000 hammer2_xop_head_t head; 1001 hammer2_dirent_head_t dirent; 1002 hammer2_key_t lhc; 1003 }; 1004 1005 struct hammer2_xop_create { 1006 hammer2_xop_head_t head; 1007 hammer2_inode_meta_t meta; /* initial metadata */ 1008 hammer2_key_t lhc; 1009 int flags; 1010 }; 1011 1012 struct hammer2_xop_destroy { 1013 hammer2_xop_head_t head; 1014 }; 1015 1016 struct hammer2_xop_fsync { 1017 hammer2_xop_head_t head; 1018 hammer2_inode_meta_t meta; 1019 hammer2_off_t osize; 1020 u_int ipflags; 1021 int clear_directdata; 1022 }; 1023 1024 struct hammer2_xop_unlinkall { 1025 hammer2_xop_head_t head; 1026 hammer2_key_t key_beg; 1027 hammer2_key_t key_end; 1028 }; 1029 1030 struct hammer2_xop_connect { 1031 hammer2_xop_head_t head; 1032 hammer2_key_t lhc; 1033 }; 1034 1035 struct hammer2_xop_flush { 1036 hammer2_xop_head_t head; 1037 }; 1038 1039 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1040 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1041 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1042 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1043 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1044 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1045 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1046 typedef struct hammer2_xop_create hammer2_xop_create_t; 1047 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1048 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1049 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1050 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1051 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1052 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1053 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1054 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1055 1056 union hammer2_xop { 1057 hammer2_xop_head_t head; 1058 hammer2_xop_ipcluster_t xop_ipcluster; 1059 hammer2_xop_readdir_t xop_readdir; 1060 hammer2_xop_nresolve_t xop_nresolve; 1061 hammer2_xop_unlink_t xop_unlink; 1062 hammer2_xop_nrename_t xop_nrename; 1063 hammer2_xop_strategy_t xop_strategy; 1064 hammer2_xop_mkdirent_t xop_mkdirent; 1065 hammer2_xop_create_t xop_create; 1066 hammer2_xop_destroy_t xop_destroy; 1067 hammer2_xop_fsync_t xop_fsync; 1068 hammer2_xop_unlinkall_t xop_unlinkall; 1069 hammer2_xop_scanlhc_t xop_scanlhc; 1070 hammer2_xop_scanall_t xop_scanall; 1071 hammer2_xop_lookup_t xop_lookup; 1072 hammer2_xop_flush_t xop_flush; 1073 hammer2_xop_connect_t xop_connect; 1074 }; 1075 1076 typedef union hammer2_xop hammer2_xop_t; 1077 1078 /* 1079 * hammer2_xop_group - Manage XOP support threads. 1080 */ 1081 struct hammer2_xop_group { 1082 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1083 }; 1084 1085 typedef struct hammer2_xop_group hammer2_xop_group_t; 1086 1087 /* 1088 * flags to hammer2_xop_collect() 1089 */ 1090 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1091 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1092 1093 /* 1094 * flags to hammer2_xop_alloc() 1095 * 1096 * MODIFYING - This is a modifying transaction, allocate a mtid. 1097 * RECURSE - Recurse top-level inode (for root flushes) 1098 */ 1099 #define HAMMER2_XOP_MODIFYING 0x00000001 1100 #define HAMMER2_XOP_STRATEGY 0x00000002 1101 #define HAMMER2_XOP_INODE_STOP 0x00000004 1102 #define HAMMER2_XOP_VOLHDR 0x00000008 1103 #define HAMMER2_XOP_FSSYNC 0x00000010 1104 #define HAMMER2_XOP_IROOT 0x00000020 1105 1106 /* 1107 * Device vnode management structure 1108 */ 1109 struct hammer2_devvp { 1110 TAILQ_ENTRY(hammer2_devvp) entry; 1111 struct vnode *devvp; /* device vnode */ 1112 char *path; /* device vnode path */ 1113 int open; /* 1 if devvp open */ 1114 }; 1115 1116 typedef struct hammer2_devvp hammer2_devvp_t; 1117 1118 TAILQ_HEAD(hammer2_devvp_list, hammer2_devvp); 1119 1120 typedef struct hammer2_devvp_list hammer2_devvp_list_t; 1121 1122 /* 1123 * Volume management structure 1124 */ 1125 struct hammer2_volume { 1126 hammer2_devvp_t *dev; /* device vnode management */ 1127 int id; /* volume id */ 1128 hammer2_off_t offset; /* offset within volumes */ 1129 hammer2_off_t size; /* volume size */ 1130 }; 1131 1132 typedef struct hammer2_volume hammer2_volume_t; 1133 1134 /* 1135 * Global (per partition) management structure, represents a hard block 1136 * device. Typically referenced by hammer2_chain structures when applicable. 1137 * Typically not used for network-managed elements. 1138 * 1139 * Note that a single hammer2_dev can be indirectly tied to multiple system 1140 * mount points. There is no direct relationship. System mounts are 1141 * per-cluster-id, not per-block-device, and a single hard mount might contain 1142 * many PFSs and those PFSs might combine together in various ways to form 1143 * the set of available clusters. 1144 */ 1145 struct hammer2_dev { 1146 struct vnode *devvp; /* device vnode for root volume */ 1147 int ronly; /* read-only mount */ 1148 int mount_count; /* number of actively mounted PFSs */ 1149 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1150 1151 struct malloc_type *mchain; 1152 int nipstacks; 1153 int maxipstacks; 1154 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1155 hammer2_spin_t io_spin; /* iotree, iolruq access */ 1156 struct hammer2_io_tree iotree; 1157 int iofree_count; 1158 int freemap_relaxed; 1159 hammer2_chain_t vchain; /* anchor chain (topology) */ 1160 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1161 hammer2_spin_t list_spin; 1162 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1163 struct lock vollk; /* lockmgr lock */ 1164 struct lock bulklk; /* bulkfree operation lock */ 1165 struct lock bflock; /* bulk-free manual function lock */ 1166 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1167 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1168 int volhdrno; /* last volhdrno written */ 1169 uint32_t hflags; /* HMNT2 flags applicable to device */ 1170 hammer2_off_t free_reserved; /* nominal free reserved */ 1171 hammer2_off_t total_size; /* total size of volumes */ 1172 int nvolumes; /* total number of volumes */ 1173 hammer2_thread_t bfthr; /* bulk-free thread */ 1174 char devrepname[64]; /* for kprintf */ 1175 hammer2_ioc_bulkfree_t bflast; /* stats for last bulkfree run */ 1176 hammer2_volume_data_t voldata; 1177 hammer2_volume_data_t volsync; /* synchronized voldata */ 1178 1179 hammer2_devvp_list_t devvpl; /* list of device vnodes including *devvp */ 1180 hammer2_volume_t volumes[HAMMER2_MAX_VOLUMES]; /* list of volumes */ 1181 }; 1182 1183 typedef struct hammer2_dev hammer2_dev_t; 1184 1185 /* 1186 * Helper functions (cluster must be locked for flags to be valid). 1187 */ 1188 static __inline 1189 int 1190 hammer2_chain_rdok(hammer2_chain_t *chain) 1191 { 1192 return (chain->error == 0); 1193 } 1194 1195 static __inline 1196 int 1197 hammer2_chain_wrok(hammer2_chain_t *chain) 1198 { 1199 return (chain->error == 0 && chain->hmp->ronly == 0); 1200 } 1201 1202 /* 1203 * Per-cluster management structure. This structure will be tied to a 1204 * system mount point if the system is mounting the PFS, but is also used 1205 * to manage clusters encountered during the super-root scan or received 1206 * via LNK_SPANs that might not be mounted. 1207 * 1208 * This structure is also used to represent the super-root that hangs off 1209 * of a hard mount point. The super-root is not really a cluster element. 1210 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1211 * this than to special case super-root manipulation in the hammer2_chain* 1212 * code as being only hammer2_dev-related. 1213 * 1214 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1215 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1216 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1217 * how many masters have been configured for a cluster and is always 1218 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1219 * iroot cluster and describes the PFS types of the nodes making up the 1220 * cluster. 1221 * 1222 * WARNING! Portions of this structure have deferred initialization. In 1223 * particular, if not mounted there will be no wthread. 1224 * umounted network PFSs will also be missing iroot and numerous 1225 * other fields will not be initialized prior to mount. 1226 * 1227 * Synchronization threads are chain-specific and only applicable 1228 * to local hard PFS entries. A hammer2_pfs structure may contain 1229 * more than one when multiple hard PFSs are present on the local 1230 * machine which require synchronization monitoring. Most PFSs 1231 * (such as snapshots) are 1xMASTER PFSs which do not need a 1232 * synchronization thread. 1233 * 1234 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1235 * hammer2_dev->mount_count when the pfs is associated with a mount 1236 * point. 1237 */ 1238 struct hammer2_pfs { 1239 struct mount *mp; 1240 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1241 uuid_t pfs_clid; 1242 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1243 hammer2_dev_t *force_local; /* only if 'local' mount */ 1244 hammer2_inode_t *iroot; /* PFS root inode */ 1245 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1246 char *pfs_names[HAMMER2_MAXCLUSTER]; 1247 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1248 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1249 hammer2_trans_t trans; 1250 struct lock lock; /* PFS lock for certain ops */ 1251 struct lock lock_nlink; /* rename and nlink lock */ 1252 struct netexport export; /* nfs export */ 1253 int unused00; 1254 int ronly; /* read-only mount */ 1255 int hflags; /* pfs-specific mount flags */ 1256 struct malloc_type *minode; 1257 struct malloc_type *mmsg; 1258 hammer2_spin_t inum_spin; /* inumber lookup */ 1259 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1260 long inum_count; /* #of inodes in inum_tree */ 1261 hammer2_spin_t lru_spin; /* inumber lookup */ 1262 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1263 int lru_count; /* #of chains on LRU */ 1264 int flags; 1265 hammer2_tid_t modify_tid; /* modify transaction id */ 1266 hammer2_tid_t inode_tid; /* inode allocator */ 1267 uint8_t pfs_nmasters; /* total masters */ 1268 uint8_t pfs_mode; /* operating mode PFSMODE */ 1269 uint8_t unused01; 1270 uint8_t unused02; 1271 int free_ticks; /* free_* calculations */ 1272 long inmem_inodes; 1273 hammer2_off_t free_reserved; 1274 hammer2_off_t free_nominal; 1275 uint32_t inmem_dirty_chains; 1276 int count_lwinprog; /* logical write in prog */ 1277 hammer2_spin_t list_spin; 1278 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1279 struct depq_head depq; /* SIDEQ flagged inodes */ 1280 long sideq_count; /* total inodes on depq */ 1281 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1282 uint32_t cluster_flags; /* cached cluster flags */ 1283 int has_xop_threads; 1284 hammer2_spin_t xop_spin; /* xop sequencer */ 1285 hammer2_xop_group_t *xop_groups; 1286 }; 1287 1288 typedef struct hammer2_pfs hammer2_pfs_t; 1289 1290 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1291 1292 /* 1293 * pmp->flags 1294 */ 1295 #define HAMMER2_PMPF_SPMP 0x00000001 1296 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1297 1298 /* 1299 * NOTE: The LRU list contains at least all the chains with refs == 0 1300 * that can be recycled, and may contain additional chains which 1301 * cannot. 1302 */ 1303 #define HAMMER2_LRU_LIMIT 4096 1304 1305 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1306 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1307 1308 #define HAMMER2_LWINPROG_WAITING 0x80000000 1309 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1310 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1311 1312 /* 1313 * hammer2_cluster_check 1314 */ 1315 #define HAMMER2_CHECK_NULL 0x00000001 1316 1317 /* 1318 * Misc 1319 */ 1320 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1321 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1322 #endif 1323 1324 #if defined(_KERNEL) 1325 1326 #ifdef MALLOC_DECLARE 1327 MALLOC_DECLARE(M_HAMMER2); 1328 #endif 1329 1330 static __inline 1331 hammer2_pfs_t * 1332 MPTOPMP(struct mount *mp) 1333 { 1334 return ((hammer2_pfs_t *)mp->mnt_data); 1335 } 1336 1337 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1338 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1339 1340 static __inline 1341 uint64_t 1342 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1343 { 1344 int bbeg; 1345 int bits; 1346 uint64_t mask; 1347 1348 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1349 HAMMER2_DEDUP_FRAGRADIX; 1350 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1351 HAMMER2_DEDUP_FRAGRADIX); 1352 mask = ((uint64_t)1 << bbeg) - 1; 1353 if (bbeg + bits == 64) 1354 mask = (uint64_t)-1; 1355 else 1356 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1357 1358 mask &= ~(((uint64_t)1 << bbeg) - 1); 1359 1360 return mask; 1361 } 1362 1363 static __inline 1364 int 1365 hammer2_error_to_errno(int error) 1366 { 1367 if (error) { 1368 if (error & HAMMER2_ERROR_EIO) 1369 error = EIO; 1370 else if (error & HAMMER2_ERROR_CHECK) 1371 error = EDOM; 1372 else if (error & HAMMER2_ERROR_ABORTED) 1373 error = EINTR; 1374 else if (error & HAMMER2_ERROR_BADBREF) 1375 error = EIO; 1376 else if (error & HAMMER2_ERROR_ENOSPC) 1377 error = ENOSPC; 1378 else if (error & HAMMER2_ERROR_ENOENT) 1379 error = ENOENT; 1380 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1381 error = ENOTEMPTY; 1382 else if (error & HAMMER2_ERROR_EAGAIN) 1383 error = EAGAIN; 1384 else if (error & HAMMER2_ERROR_ENOTDIR) 1385 error = ENOTDIR; 1386 else if (error & HAMMER2_ERROR_EISDIR) 1387 error = EISDIR; 1388 else if (error & HAMMER2_ERROR_EINPROGRESS) 1389 error = EINPROGRESS; 1390 else if (error & HAMMER2_ERROR_EEXIST) 1391 error = EEXIST; 1392 else if (error & HAMMER2_ERROR_EINVAL) 1393 error = EINVAL; 1394 else if (error & HAMMER2_ERROR_EDEADLK) 1395 error = EDEADLK; 1396 else if (error & HAMMER2_ERROR_ESRCH) 1397 error = ESRCH; 1398 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1399 error = ETIMEDOUT; 1400 else 1401 error = EDOM; 1402 } 1403 return error; 1404 } 1405 1406 static __inline 1407 int 1408 hammer2_errno_to_error(int error) 1409 { 1410 switch(error) { 1411 case 0: 1412 return 0; 1413 case EIO: 1414 return HAMMER2_ERROR_EIO; 1415 case EDOM: 1416 return HAMMER2_ERROR_CHECK; 1417 case EINTR: 1418 return HAMMER2_ERROR_ABORTED; 1419 //case EIO: 1420 // return HAMMER2_ERROR_BADBREF; 1421 case ENOSPC: 1422 return HAMMER2_ERROR_ENOSPC; 1423 case ENOENT: 1424 return HAMMER2_ERROR_ENOENT; 1425 case ENOTEMPTY: 1426 return HAMMER2_ERROR_ENOTEMPTY; 1427 case EAGAIN: 1428 return HAMMER2_ERROR_EAGAIN; 1429 case ENOTDIR: 1430 return HAMMER2_ERROR_ENOTDIR; 1431 case EISDIR: 1432 return HAMMER2_ERROR_EISDIR; 1433 case EINPROGRESS: 1434 return HAMMER2_ERROR_EINPROGRESS; 1435 case EEXIST: 1436 return HAMMER2_ERROR_EEXIST; 1437 case EINVAL: 1438 return HAMMER2_ERROR_EINVAL; 1439 case EDEADLK: 1440 return HAMMER2_ERROR_EDEADLK; 1441 case ESRCH: 1442 return HAMMER2_ERROR_ESRCH; 1443 case ETIMEDOUT: 1444 return HAMMER2_ERROR_ETIMEDOUT; 1445 default: 1446 return HAMMER2_ERROR_EINVAL; 1447 } 1448 } 1449 1450 1451 extern struct vop_ops hammer2_vnode_vops; 1452 extern struct vop_ops hammer2_spec_vops; 1453 extern struct vop_ops hammer2_fifo_vops; 1454 extern struct hammer2_pfslist hammer2_pfslist; 1455 extern struct lock hammer2_mntlk; 1456 1457 1458 extern int hammer2_debug; 1459 extern int hammer2_xopgroups; 1460 extern long hammer2_debug_inode; 1461 extern int hammer2_cluster_meta_read; 1462 extern int hammer2_cluster_data_read; 1463 extern int hammer2_cluster_write; 1464 extern int hammer2_dedup_enable; 1465 extern int hammer2_always_compress; 1466 extern int hammer2_flush_pipe; 1467 extern int hammer2_dio_count; 1468 extern int hammer2_dio_limit; 1469 extern int hammer2_bulkfree_tps; 1470 extern int hammer2_worker_rmask; 1471 extern long hammer2_chain_allocs; 1472 extern long hammer2_limit_dirty_chains; 1473 extern long hammer2_limit_dirty_inodes; 1474 extern long hammer2_count_modified_chains; 1475 extern long hammer2_iod_file_read; 1476 extern long hammer2_iod_meta_read; 1477 extern long hammer2_iod_indr_read; 1478 extern long hammer2_iod_fmap_read; 1479 extern long hammer2_iod_volu_read; 1480 extern long hammer2_iod_file_write; 1481 extern long hammer2_iod_file_wembed; 1482 extern long hammer2_iod_file_wzero; 1483 extern long hammer2_iod_file_wdedup; 1484 extern long hammer2_iod_meta_write; 1485 extern long hammer2_iod_indr_write; 1486 extern long hammer2_iod_fmap_write; 1487 extern long hammer2_iod_volu_write; 1488 1489 extern long hammer2_process_icrc32; 1490 extern long hammer2_process_xxhash64; 1491 1492 extern struct objcache *cache_buffer_read; 1493 extern struct objcache *cache_buffer_write; 1494 extern struct objcache *cache_xops; 1495 1496 /* 1497 * hammer2_subr.c 1498 */ 1499 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1500 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1501 1502 int hammer2_signal_check(time_t *timep); 1503 const char *hammer2_error_str(int error); 1504 const char *hammer2_bref_type_str(int btype); 1505 1506 int hammer2_get_dtype(uint8_t type); 1507 int hammer2_get_vtype(uint8_t type); 1508 uint8_t hammer2_get_obj_type(enum vtype vtype); 1509 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1510 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1511 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1512 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1513 1514 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1515 int hammer2_getradix(size_t bytes); 1516 1517 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1518 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1519 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1520 void hammer2_update_time(uint64_t *timep); 1521 void hammer2_adjreadcounter(int btype, size_t bytes); 1522 void hammer2_adjwritecounter(int btype, size_t bytes); 1523 1524 /* 1525 * hammer2_inode.c 1526 */ 1527 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1528 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1529 hammer2_tid_t inum); 1530 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1531 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1532 void hammer2_inode_ref(hammer2_inode_t *ip); 1533 void hammer2_inode_drop(hammer2_inode_t *ip); 1534 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1535 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1536 int idx); 1537 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1538 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1539 void hammer2_inode_modify(hammer2_inode_t *ip); 1540 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1541 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1542 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1543 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1544 void hammer2_inode_unlock(hammer2_inode_t *ip); 1545 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1546 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1547 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1548 int clindex, hammer2_chain_t **parentp, int how); 1549 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1550 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1551 hammer2_mtx_state_t ostate); 1552 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1553 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1554 1555 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1556 struct vattr *vap, struct ucred *cred, 1557 hammer2_key_t inum, int *errorp); 1558 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1559 const uint8_t *name, size_t name_len, 1560 int *errorp); 1561 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1562 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1563 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1564 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1565 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1566 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1567 size_t name_len, hammer2_key_t inum, uint8_t type); 1568 1569 /* 1570 * hammer2_chain.c 1571 */ 1572 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1573 hammer2_pfs_t *pmp, 1574 hammer2_blockref_t *bref); 1575 void hammer2_chain_core_init(hammer2_chain_t *chain); 1576 void hammer2_chain_ref(hammer2_chain_t *chain); 1577 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1578 void hammer2_chain_drop(hammer2_chain_t *chain); 1579 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1580 void hammer2_chain_unhold(hammer2_chain_t *chain); 1581 void hammer2_chain_rehold(hammer2_chain_t *chain); 1582 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1583 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1584 void hammer2_chain_load_data(hammer2_chain_t *chain); 1585 1586 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1587 int clindex, int flags, 1588 hammer2_chain_t **parentp, 1589 hammer2_chain_t **chainp); 1590 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1591 hammer2_off_t dedup_off, int flags); 1592 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1593 hammer2_tid_t mtid, int flags); 1594 int hammer2_chain_resize(hammer2_chain_t *chain, 1595 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1596 int nradix, int flags); 1597 void hammer2_chain_unlock(hammer2_chain_t *chain); 1598 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1599 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1600 hammer2_blockref_t *bref, int how); 1601 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1602 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1603 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1604 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1605 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1606 hammer2_key_t *key_nextp, 1607 hammer2_key_t key_beg, hammer2_key_t key_end, 1608 int *errorp, int flags); 1609 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1610 hammer2_chain_t *chain, 1611 hammer2_key_t *key_nextp, 1612 hammer2_key_t key_beg, hammer2_key_t key_end, 1613 int *errorp, int flags); 1614 int hammer2_chain_scan(hammer2_chain_t *parent, 1615 hammer2_chain_t **chainp, 1616 hammer2_blockref_t *bref, 1617 int *firstp, int flags); 1618 1619 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1620 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1621 int methods, hammer2_key_t key, int keybits, 1622 int type, size_t bytes, hammer2_tid_t mtid, 1623 hammer2_off_t dedup_off, int flags); 1624 void hammer2_chain_rename(hammer2_chain_t **parentp, 1625 hammer2_chain_t *chain, 1626 hammer2_tid_t mtid, int flags); 1627 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1628 hammer2_tid_t mtid, int flags); 1629 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1630 hammer2_chain_t *chain); 1631 void hammer2_chain_setflush(hammer2_chain_t *chain); 1632 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1633 hammer2_blockref_t *base, int count); 1634 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1635 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1636 1637 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1638 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1639 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1640 size_t name_len); 1641 1642 void hammer2_base_delete(hammer2_chain_t *parent, 1643 hammer2_blockref_t *base, int count, 1644 hammer2_chain_t *chain, 1645 hammer2_blockref_t *obref); 1646 void hammer2_base_insert(hammer2_chain_t *parent, 1647 hammer2_blockref_t *base, int count, 1648 hammer2_chain_t *chain, 1649 hammer2_blockref_t *elm); 1650 1651 /* 1652 * hammer2_flush.c 1653 */ 1654 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1655 int hammer2_flush(hammer2_chain_t *chain, int istop); 1656 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1657 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1658 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1659 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1660 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1661 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1662 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1663 1664 /* 1665 * hammer2_ioctl.c 1666 */ 1667 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1668 int fflag, struct ucred *cred); 1669 1670 /* 1671 * hammer2_io.c 1672 */ 1673 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1674 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1675 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1676 void hammer2_io_bkvasync(hammer2_io_t *dio); 1677 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1678 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1679 hammer2_off_t data_off, u_int bytes); 1680 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1681 u_int bytes); 1682 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1683 hammer2_io_t **diop); 1684 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1685 hammer2_io_t **diop); 1686 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1687 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1688 void hammer2_io_setdirty(hammer2_io_t *dio); 1689 1690 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1691 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1692 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1693 int lsize HAMMER2_IO_DEBUG_ARGS); 1694 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1695 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1696 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1697 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1698 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1699 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1700 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1701 1702 #ifndef HAMMER2_IO_DEBUG 1703 1704 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1705 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1706 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1707 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1708 #define hammer2_io_putblk(diop) \ 1709 _hammer2_io_putblk(diop) 1710 #define hammer2_io_bwrite(diop) \ 1711 _hammer2_io_bwrite((diop)) 1712 #define hammer2_io_bawrite(diop) \ 1713 _hammer2_io_bawrite((diop)) 1714 #define hammer2_io_bdwrite(diop) \ 1715 _hammer2_io_bdwrite((diop)) 1716 #define hammer2_io_brelse(diop) \ 1717 _hammer2_io_brelse((diop)) 1718 #define hammer2_io_bqrelse(diop) \ 1719 _hammer2_io_bqrelse((diop)) 1720 #define hammer2_io_ref(dio) \ 1721 _hammer2_io_ref((dio)) 1722 1723 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1724 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1725 1726 #else 1727 1728 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1729 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1730 __FILE__, __LINE__) 1731 1732 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1733 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1734 1735 #define hammer2_io_putblk(diop) \ 1736 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1737 1738 #define hammer2_io_bwrite(diop) \ 1739 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1740 #define hammer2_io_bawrite(diop) \ 1741 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1742 #define hammer2_io_bdwrite(diop) \ 1743 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1744 #define hammer2_io_brelse(diop) \ 1745 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1746 #define hammer2_io_bqrelse(diop) \ 1747 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1748 #define hammer2_io_ref(dio) \ 1749 _hammer2_io_ref((dio), __FILE__, __LINE__) 1750 1751 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1752 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1753 __FILE__, __LINE__) 1754 1755 #endif 1756 1757 /* 1758 * hammer2_admin.c 1759 */ 1760 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1761 void hammer2_thr_signal2(hammer2_thread_t *thr, 1762 uint32_t pflags, uint32_t nflags); 1763 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1764 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1765 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1766 void hammer2_thr_create(hammer2_thread_t *thr, 1767 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1768 const char *id, int clindex, int repidx, 1769 void (*func)(void *arg)); 1770 void hammer2_thr_delete(hammer2_thread_t *thr); 1771 void hammer2_thr_remaster(hammer2_thread_t *thr); 1772 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1773 void hammer2_thr_freeze(hammer2_thread_t *thr); 1774 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1775 int hammer2_thr_break(hammer2_thread_t *thr); 1776 void hammer2_primary_xops_thread(void *arg); 1777 1778 /* 1779 * hammer2_thread.c (XOP API) 1780 */ 1781 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1782 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1783 const char *name, size_t name_len); 1784 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1785 const char *name, size_t name_len); 1786 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1787 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1788 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1789 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1790 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1791 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1792 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1793 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1794 int notidx); 1795 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1796 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1797 int hammer2_xop_active(hammer2_xop_head_t *xop); 1798 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1799 int clindex, int error); 1800 1801 /* 1802 * hammer2_synchro.c 1803 */ 1804 void hammer2_primary_sync_thread(void *arg); 1805 1806 /* 1807 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1808 * may be integrated into other source files. 1809 */ 1810 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1811 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1812 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1813 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1814 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1815 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1816 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1817 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1818 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1819 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1820 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1821 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1822 void *scratch, int clindex); 1823 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1824 void *scratch, int clindex); 1825 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1826 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1827 int clindex); 1828 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1829 int clindex); 1830 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1831 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1832 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1833 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1834 1835 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1836 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1837 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1844 int clindex); 1845 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1846 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1847 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1848 int clindex); 1849 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1850 int clindex); 1851 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1852 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1853 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1854 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1855 int clindex); 1856 1857 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1858 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1859 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1860 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1861 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1862 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1863 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1864 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1865 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1866 int clindex); 1867 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1868 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1869 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1870 int clindex); 1871 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1872 int clindex); 1873 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1874 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1875 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1876 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1877 int clindex); 1878 1879 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1880 extern hammer2_xop_desc_t hammer2_readdir_desc; 1881 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1882 extern hammer2_xop_desc_t hammer2_unlink_desc; 1883 extern hammer2_xop_desc_t hammer2_nrename_desc; 1884 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1885 extern hammer2_xop_desc_t hammer2_scanall_desc; 1886 extern hammer2_xop_desc_t hammer2_lookup_desc; 1887 extern hammer2_xop_desc_t hammer2_delete_desc; 1888 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1889 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1890 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1891 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1892 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1893 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1894 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1895 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1896 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1897 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1898 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1899 1900 /* 1901 * hammer2_msgops.c 1902 */ 1903 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1904 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1905 1906 /* 1907 * hammer2_vfsops.c 1908 */ 1909 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1910 char pfx, u_int flags); 1911 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1912 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1913 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1914 1915 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1916 const hammer2_inode_data_t *ripdata, 1917 hammer2_tid_t modify_tid, 1918 hammer2_dev_t *force_local); 1919 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1920 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1921 ino_t ino, struct vnode **vpp); 1922 1923 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1924 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1925 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1926 1927 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1928 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1929 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1930 1931 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1932 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1933 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1934 1935 /* 1936 * hammer2_freemap.c 1937 */ 1938 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1939 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1940 hammer2_blockref_t *bref, int how); 1941 1942 /* 1943 * hammer2_cluster.c 1944 */ 1945 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1946 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1947 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1948 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1949 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1950 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1951 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1952 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1953 int flags); 1954 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1955 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1956 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1957 1958 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1959 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1960 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1961 struct hammer2_ioc_bulkfree *bfi); 1962 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1963 hammer2_chain_t *chain); 1964 1965 /* 1966 * hammer2_iocom.c 1967 */ 1968 void hammer2_iocom_init(hammer2_dev_t *hmp); 1969 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1970 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1971 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1972 1973 /* 1974 * hammer2_strategy.c 1975 */ 1976 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1977 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1978 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1979 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1980 const char *data); 1981 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1982 1983 /* 1984 * hammer2_ondisk.c 1985 */ 1986 int hammer2_open_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1987 int hammer2_close_devvp(const hammer2_devvp_list_t *devvpl, int ronly); 1988 int hammer2_init_devvp(const char *blkdevs, int rootmount, 1989 hammer2_devvp_list_t *devvpl); 1990 void hammer2_cleanup_devvp(hammer2_devvp_list_t *devvpl); 1991 int hammer2_init_volumes(struct mount *mp, const hammer2_devvp_list_t *devvpl, 1992 hammer2_volume_t *volumes, 1993 hammer2_volume_data_t *rootvoldata, 1994 struct vnode **rootvoldevvp); 1995 hammer2_volume_t *hammer2_get_volume(hammer2_dev_t *hmp, hammer2_off_t offset); 1996 1997 /* 1998 * More complex inlines 1999 */ 2000 2001 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 2002 2003 static __inline 2004 const hammer2_media_data_t * 2005 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 2006 { 2007 hammer2_chain_t *focus; 2008 const void *data; 2009 2010 focus = xop->cluster.focus; 2011 if (focus->dio) { 2012 lockmgr(&focus->diolk, LK_SHARED); 2013 if ((xop->focus_dio = focus->dio) != NULL) { 2014 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2015 hammer2_io_bkvasync(xop->focus_dio); 2016 } 2017 data = focus->data; 2018 lockmgr(&focus->diolk, LK_RELEASE); 2019 } else { 2020 data = focus->data; 2021 } 2022 2023 return data; 2024 } 2025 2026 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2027 2028 static __inline 2029 void 2030 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2031 { 2032 if (xop->focus_dio) 2033 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2034 } 2035 2036 #endif /* !_KERNEL */ 2037 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2038