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/tree.h> 77 #include <sys/malloc.h> 78 #include <sys/mount.h> 79 #include <sys/vnode.h> 80 #include <sys/proc.h> 81 #include <sys/mountctl.h> 82 #include <sys/priv.h> 83 #include <sys/stat.h> 84 #include <sys/thread.h> 85 #include <sys/globaldata.h> 86 #include <sys/lockf.h> 87 #include <sys/buf.h> 88 #include <sys/queue.h> 89 #include <sys/limits.h> 90 #include <sys/dmsg.h> 91 #include <sys/mutex.h> 92 #ifdef _KERNEL 93 #include <sys/kern_syscall.h> 94 #endif 95 96 #ifdef _KERNEL 97 #include <sys/signal2.h> 98 #include <sys/buf2.h> 99 #include <sys/mutex2.h> 100 #include <sys/spinlock2.h> 101 #endif 102 103 #include "hammer2_xxhash.h" 104 #include "hammer2_disk.h" 105 #include "hammer2_mount.h" 106 #include "hammer2_ioctl.h" 107 108 struct hammer2_io; 109 struct hammer2_chain; 110 struct hammer2_cluster; 111 struct hammer2_inode; 112 struct hammer2_depend; 113 struct hammer2_dev; 114 struct hammer2_pfs; 115 struct hammer2_span; 116 struct hammer2_msg; 117 struct hammer2_thread; 118 union hammer2_xop; 119 120 /* 121 * Mutex and lock shims. Hammer2 requires support for asynchronous and 122 * abortable locks, and both exclusive and shared spinlocks. Normal 123 * synchronous non-abortable locks can be substituted for spinlocks. 124 */ 125 typedef mtx_t hammer2_mtx_t; 126 typedef mtx_link_t hammer2_mtx_link_t; 127 typedef mtx_state_t hammer2_mtx_state_t; 128 129 typedef struct spinlock hammer2_spin_t; 130 131 #define hammer2_mtx_ex mtx_lock_ex_quick 132 #define hammer2_mtx_ex_try mtx_lock_ex_try 133 #define hammer2_mtx_sh mtx_lock_sh_quick 134 #define hammer2_mtx_sh_again mtx_lock_sh_again 135 #define hammer2_mtx_sh_try mtx_lock_sh_try 136 #define hammer2_mtx_unlock mtx_unlock 137 #define hammer2_mtx_downgrade mtx_downgrade 138 #define hammer2_mtx_owned mtx_owned 139 #define hammer2_mtx_init mtx_init 140 #define hammer2_mtx_temp_release mtx_lock_temp_release 141 #define hammer2_mtx_temp_restore mtx_lock_temp_restore 142 #define hammer2_mtx_refs mtx_lockrefs 143 144 #define hammer2_spin_init spin_init 145 #define hammer2_spin_sh spin_lock_shared 146 #define hammer2_spin_ex spin_lock 147 #define hammer2_spin_unsh spin_unlock_shared 148 #define hammer2_spin_unex spin_unlock 149 150 TAILQ_HEAD(hammer2_xop_list, hammer2_xop_head); 151 TAILQ_HEAD(hammer2_chain_list, hammer2_chain); 152 153 typedef struct hammer2_xop_list hammer2_xop_list_t; 154 155 #ifdef _KERNEL 156 /* 157 * General lock support 158 */ 159 static __inline 160 int 161 hammer2_mtx_upgrade_try(hammer2_mtx_t *mtx) 162 { 163 return mtx_upgrade_try(mtx); 164 } 165 166 #endif 167 168 /* 169 * The xid tracks internal transactional updates. 170 * 171 * XXX fix-me, really needs to be 64-bits 172 */ 173 typedef uint32_t hammer2_xid_t; 174 175 #define HAMMER2_XID_MIN 0x00000000U 176 #define HAMMER2_XID_MAX 0x7FFFFFFFU 177 178 /* 179 * Cap the dynamic calculation for the maximum number of dirty 180 * chains and dirty inodes allowed. 181 */ 182 #define HAMMER2_LIMIT_DIRTY_CHAINS (1024*1024) 183 #define HAMMER2_LIMIT_DIRTY_INODES (65536) 184 185 /* 186 * The chain structure tracks a portion of the media topology from the 187 * root (volume) down. Chains represent volumes, inodes, indirect blocks, 188 * data blocks, and freemap nodes and leafs. 189 * 190 * The chain structure utilizes a simple singly-homed topology and the 191 * chain's in-memory topology will move around as the chains do, due mainly 192 * to renames and indirect block creation. 193 * 194 * Block Table Updates 195 * 196 * Block table updates for insertions and updates are delayed until the 197 * flush. This allows us to avoid having to modify the parent chain 198 * all the way to the root. 199 * 200 * Block table deletions are performed immediately (modifying the parent 201 * in the process) because the flush code uses the chain structure to 202 * track delayed updates and the chain will be (likely) gone or moved to 203 * another location in the topology after a deletion. 204 * 205 * A prior iteration of the code tried to keep the relationship intact 206 * on deletes by doing a delete-duplicate operation on the chain, but 207 * it added way too much complexity to the codebase. 208 * 209 * Flush Synchronization 210 * 211 * The flush code must flush modified chains bottom-up. Because chain 212 * structures can shift around and are NOT topologically stable, 213 * modified chains are independently indexed for the flush. As the flush 214 * runs it modifies (or further modifies) and updates the parents, 215 * propagating the flush all the way to the volume root. 216 * 217 * Modifying front-end operations can occur during a flush but will block 218 * in two cases: (1) when the front-end tries to operate on the inode 219 * currently in the midst of being flushed and (2) if the front-end 220 * crosses an inode currently being flushed (such as during a rename). 221 * So, for example, if you rename directory "x" to "a/b/c/d/e/f/g/x" and 222 * the flusher is currently working on "a/b/c", the rename will block 223 * temporarily in order to ensure that "x" exists in one place or the 224 * other. 225 * 226 * Meta-data statistics are updated by the flusher. The front-end will 227 * make estimates but meta-data must be fully synchronized only during a 228 * flush in order to ensure that it remains correct across a crash. 229 * 230 * Multiple flush synchronizations can theoretically be in-flight at the 231 * same time but the implementation is not coded to handle the case and 232 * currently serializes them. 233 * 234 * Snapshots: 235 * 236 * Snapshots currently require the subdirectory tree being snapshotted 237 * to be flushed. The snapshot then creates a new super-root inode which 238 * copies the flushed blockdata of the directory or file that was 239 * snapshotted. 240 * 241 * RBTREE NOTES: 242 * 243 * - Note that the radix tree runs in powers of 2 only so sub-trees 244 * cannot straddle edges. 245 */ 246 RB_HEAD(hammer2_chain_tree, hammer2_chain); 247 248 struct hammer2_reptrack { 249 hammer2_spin_t spin; 250 struct hammer2_reptrack *next; 251 struct hammer2_chain *chain; 252 }; 253 254 /* 255 * Core topology for chain (embedded in chain). Protected by a spinlock. 256 */ 257 struct hammer2_chain_core { 258 hammer2_spin_t spin; 259 struct hammer2_reptrack *reptrack; 260 struct hammer2_chain_tree rbtree; /* sub-chains */ 261 int live_zero; /* blockref array opt */ 262 u_int live_count; /* live (not deleted) chains in tree */ 263 u_int chain_count; /* live + deleted chains under core */ 264 int generation; /* generation number (inserts only) */ 265 }; 266 267 typedef struct hammer2_chain_core hammer2_chain_core_t; 268 269 RB_HEAD(hammer2_io_tree, hammer2_io); 270 271 /* 272 * DIO - Management structure wrapping system buffer cache. 273 * 274 * HAMMER2 uses an I/O abstraction that allows it to cache and manipulate 275 * fixed-sized filesystem buffers frontend by variable-sized hammer2_chain 276 * structures. 277 */ 278 /* #define HAMMER2_IO_DEBUG */ 279 280 #ifdef HAMMER2_IO_DEBUG 281 #define HAMMER2_IO_DEBUG_ARGS , const char *file, int line 282 #define HAMMER2_IO_DEBUG_CALL , file, line 283 #define HAMMER2_IO_DEBUG_COUNT 2048 284 #define HAMMER2_IO_DEBUG_MASK (HAMMER2_IO_DEBUG_COUNT - 1) 285 #else 286 #define HAMMER2_IO_DEBUG_ARGS 287 #define HAMMER2_IO_DEBUG_CALL 288 #endif 289 290 struct hammer2_io { 291 RB_ENTRY(hammer2_io) rbnode; /* indexed by device offset */ 292 struct hammer2_dev *hmp; 293 struct buf *bp; 294 off_t pbase; 295 uint64_t refs; 296 int psize; 297 int act; /* activity */ 298 int btype; /* approximate BREF_TYPE_* */ 299 int ticks; 300 int error; 301 #ifdef HAMMER2_IO_DEBUG 302 int debug_index; 303 #else 304 int unused01; 305 #endif 306 uint64_t dedup_valid; /* valid for dedup operation */ 307 uint64_t dedup_alloc; /* allocated / de-dupable */ 308 #ifdef HAMMER2_IO_DEBUG 309 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 310 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 311 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 312 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 313 #endif 314 }; 315 316 typedef struct hammer2_io hammer2_io_t; 317 318 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 319 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 320 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 321 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 322 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 323 324 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 325 326 /* 327 * Primary chain structure keeps track of the topology in-memory. 328 */ 329 struct hammer2_chain { 330 hammer2_mtx_t lock; 331 hammer2_chain_core_t core; 332 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 333 hammer2_blockref_t bref; 334 struct hammer2_chain *parent; 335 struct hammer2_dev *hmp; 336 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 337 338 struct lock diolk; /* xop focus interlock */ 339 hammer2_io_t *dio; /* physical data buffer */ 340 hammer2_media_data_t *data; /* data pointer shortcut */ 341 u_int bytes; /* physical data size */ 342 u_int flags; 343 u_int refs; 344 u_int lockcnt; 345 int error; /* on-lock data error state */ 346 int cache_index; /* heur speeds up lookup */ 347 348 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 349 }; 350 351 typedef struct hammer2_chain hammer2_chain_t; 352 353 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 354 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 355 356 /* 357 * Special notes on flags: 358 * 359 * INITIAL - This flag allows a chain to be created and for storage to 360 * be allocated without having to immediately instantiate the 361 * related buffer. The data is assumed to be all-zeros. It 362 * is primarily used for indirect blocks. 363 * 364 * MODIFIED - The chain's media data has been modified. Prevents chain 365 * free on lastdrop if still in the topology. 366 * 367 * UPDATE - Chain might not be modified but parent blocktable needs 368 * an update. Prevents chain free on lastdrop if still in 369 * the topology. 370 * 371 * FICTITIOUS - Faked chain as a placeholder for an error condition. This 372 * chain is unsuitable for I/O. 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_FICTITIOUS 0x00000400 /* unsuitable for I/O */ 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_EMBEDDED 0x00010000 /* embedded data */ 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 * ALLNODES - Allows NULL focus. 474 * 475 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 476 * missing, bulk file data is not resolved but inodes and 477 * other meta-data will. 478 */ 479 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 480 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 481 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 482 #define HAMMER2_LOOKUP_SHARED 0x00000100 483 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 484 #define HAMMER2_LOOKUP_ALLNODES 0x00000400 /* allow NULL focus */ 485 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 486 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 487 488 /* 489 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 490 * 491 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 492 * blocks in the INITIAL-create state. 493 */ 494 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 495 496 /* 497 * Flags passed to hammer2_chain_lock() 498 * 499 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 500 * will be made to either the cluster being locked or any underlying 501 * cluster. It allows the cluster to lock and access data for a subset 502 * of available nodes instead of all available nodes. 503 * 504 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 505 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 506 * operation. 507 */ 508 #define HAMMER2_RESOLVE_NEVER 1 509 #define HAMMER2_RESOLVE_MAYBE 2 510 #define HAMMER2_RESOLVE_ALWAYS 3 511 #define HAMMER2_RESOLVE_MASK 0x0F 512 513 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 514 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 515 #define HAMMER2_RESOLVE_UNUSED40 0x40 516 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 517 518 /* 519 * Flags passed to hammer2_chain_delete() 520 */ 521 #define HAMMER2_DELETE_PERMANENT 0x0001 522 523 /* 524 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 525 * or hammer2_chain_create(). 526 */ 527 #define HAMMER2_INSERT_PFSROOT 0x0004 528 #define HAMMER2_INSERT_SAMEPARENT 0x0008 529 530 /* 531 * hammer2_freemap_adjust() 532 */ 533 #define HAMMER2_FREEMAP_DORECOVER 1 534 #define HAMMER2_FREEMAP_DOMAYFREE 2 535 #define HAMMER2_FREEMAP_DOREALFREE 3 536 537 /* 538 * HAMMER2 cluster - A set of chains representing the same entity. 539 * 540 * hammer2_cluster typically represents a temporary set of representitive 541 * chains. The one exception is that a hammer2_cluster is embedded in 542 * hammer2_inode. This embedded cluster is ONLY used to track the 543 * representitive chains and cannot be directly locked. 544 * 545 * A cluster is usually temporary (and thus per-thread) for locking purposes, 546 * allowing us to embed the asynchronous storage required for cluster 547 * operations in the cluster itself and adjust the state and status without 548 * having to worry too much about SMP issues. 549 * 550 * The exception is the cluster embedded in the hammer2_inode structure. 551 * This is used to cache the cluster state on an inode-by-inode basis. 552 * Individual hammer2_chain structures not incorporated into clusters might 553 * also stick around to cache miscellanious elements. 554 * 555 * Because the cluster is a 'working copy' and is usually subject to cluster 556 * quorum rules, it is quite possible for us to end up with an insufficient 557 * number of live chains to execute an operation. If an insufficient number 558 * of chains remain in a working copy, the operation may have to be 559 * downgraded, retried, stall until the requisit number of chains are 560 * available, or possibly even error out depending on the mount type. 561 * 562 * A cluster's focus is set when it is locked. The focus can only be set 563 * to a chain still part of the synchronized set. 564 */ 565 #define HAMMER2_XOPFIFO 16 566 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 567 #define HAMMER2_XOPGROUPS_MIN 32 568 569 #define HAMMER2_MAXCLUSTER 8 570 #define HAMMER2_XOPMASK_CLUSTER (uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1) 571 #define HAMMER2_XOPMASK_VOP (uint64_t)0x0000000080000000LLU 572 #define HAMMER2_XOPMASK_FIFOW (uint64_t)0x0000000040000000LLU 573 #define HAMMER2_XOPMASK_WAIT (uint64_t)0x0000000020000000LLU 574 #define HAMMER2_XOPMASK_FEED (uint64_t)0x0000000100000000LLU 575 576 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 577 578 struct hammer2_cluster_item { 579 hammer2_chain_t *chain; 580 int error; 581 uint32_t flags; 582 }; 583 584 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 585 586 /* 587 * INVALID - Invalid for focus, i.e. not part of synchronized set. 588 * Once set, this bit is sticky across operations. 589 * 590 * FEMOD - Indicates that front-end modifying operations can 591 * mess with this entry and MODSYNC will copy also 592 * effect it. 593 */ 594 #define HAMMER2_CITEM_INVALID 0x00000001 595 #define HAMMER2_CITEM_FEMOD 0x00000002 596 #define HAMMER2_CITEM_NULL 0x00000004 597 598 struct hammer2_cluster { 599 int refs; /* track for deallocation */ 600 int ddflag; 601 struct hammer2_pfs *pmp; 602 uint32_t flags; 603 int nchains; 604 int error; /* error code valid on lock */ 605 int focus_index; 606 hammer2_chain_t *focus; /* current focus (or mod) */ 607 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 608 }; 609 610 typedef struct hammer2_cluster hammer2_cluster_t; 611 612 /* 613 * WRHARD - Hard mounts can write fully synchronized 614 * RDHARD - Hard mounts can read fully synchronized 615 * UNHARD - Unsynchronized masters present 616 * NOHARD - No masters visible 617 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 618 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 619 * UNSOFT - Unsynchronized slaves present 620 * NOSOFT - No slaves visible 621 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 622 * MSYNCED - All masters are fully synchronized 623 * SSYNCED - All known local slaves are fully synchronized to masters 624 * 625 * All available masters are always incorporated. All PFSs belonging to a 626 * cluster (master, slave, copy, whatever) always try to synchronize the 627 * total number of known masters in the PFSs root inode. 628 * 629 * A cluster might have access to many slaves, copies, or caches, but we 630 * have a limited number of cluster slots. Any such elements which are 631 * directly mounted from block device(s) will always be incorporated. Note 632 * that SSYNCED only applies to such elements which are directly mounted, 633 * not to any remote slaves, copies, or caches that could be available. These 634 * bits are used to monitor and drive our synchronization threads. 635 * 636 * When asking the question 'is any data accessible at all', then a simple 637 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 638 * these bits are set the object can be read with certain caveats: 639 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 640 * and RDSLAVE - not authoritative, has some data but it could be old or 641 * incomplete. 642 * 643 * When both soft and hard mounts are available, data will be read and written 644 * via the soft mount only. But all might be in the cluster because 645 * background synchronization threads still need to do their work. 646 */ 647 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 648 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 649 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 650 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 651 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 652 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 653 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 654 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 655 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 656 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 657 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 658 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 659 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 660 661 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 662 HAMMER2_CLUSTER_RDSOFT | \ 663 HAMMER2_CLUSTER_RDSLAVE) 664 665 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 666 HAMMER2_CLUSTER_RDSOFT) 667 668 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 669 HAMMER2_CLUSTER_WRSOFT) 670 671 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 672 HAMMER2_CLUSTER_RDHARD | \ 673 HAMMER2_CLUSTER_WRSOFT | \ 674 HAMMER2_CLUSTER_RDSOFT | \ 675 HAMMER2_CLUSTER_MSYNCED | \ 676 HAMMER2_CLUSTER_SSYNCED) 677 678 /* 679 * Helper functions (cluster must be locked for flags to be valid). 680 */ 681 static __inline 682 int 683 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 684 { 685 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 686 } 687 688 static __inline 689 int 690 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 691 { 692 return (cluster->flags & HAMMER2_CLUSTER_WROK); 693 } 694 695 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 696 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 697 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 698 699 struct hammer2_depend { 700 TAILQ_ENTRY(hammer2_depend) entry; 701 struct inoq_head sideq; 702 long count; 703 int pass2; 704 int unused01; 705 }; 706 707 typedef struct hammer2_depend hammer2_depend_t; 708 709 /* 710 * A hammer2 inode. 711 * 712 * NOTE: The inode-embedded cluster is never used directly for I/O (since 713 * it may be shared). Instead it will be replicated-in and synchronized 714 * back out if changed. 715 */ 716 struct hammer2_inode { 717 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 718 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 719 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 720 hammer2_depend_t depend_static; /* (in-place allocation) */ 721 hammer2_mtx_t lock; /* inode lock */ 722 hammer2_mtx_t truncate_lock; /* prevent truncates */ 723 struct hammer2_pfs *pmp; /* PFS mount */ 724 struct vnode *vp; 725 struct spinlock cluster_spin; /* update cluster */ 726 hammer2_cluster_t cluster; 727 struct lockf advlock; 728 u_int flags; 729 u_int refs; /* +vpref, +flushref */ 730 uint8_t comp_heuristic; 731 hammer2_inode_meta_t meta; /* copy of meta-data */ 732 hammer2_off_t osize; 733 }; 734 735 typedef struct hammer2_inode hammer2_inode_t; 736 737 /* 738 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 739 * RESIZED - Inode truncated (any) or inode extended beyond 740 * EMBEDDED_BYTES. 741 * 742 * SYNCQ - Inode is included in the current filesystem sync. The 743 * DELETING and CREATING flags will be acted upon. 744 * 745 * SIDEQ - Inode has likely been disconnected from the vnode topology 746 * and so is not visible to the vnode-based filesystem syncer 747 * code, but is dirty and must be included in the next 748 * filesystem sync. These inodes are moved to the SYNCQ at 749 * the time the sync occurs. 750 * 751 * Inodes are not placed on this queue simply because they have 752 * become dirty, if a vnode is attached. 753 * 754 * DELETING - Inode is flagged for deletion during the next filesystem 755 * sync. That is, the inode's chain is currently connected 756 * and must be deleting during the current or next fs sync. 757 * 758 * CREATING - Inode is flagged for creation during the next filesystem 759 * sync. That is, the inode's chain topology exists (so 760 * kernel buffer flushes can occur), but is currently 761 * disconnected and must be inserted during the current or 762 * next fs sync. If the DELETING flag is also set, the 763 * topology can be thrown away instead. 764 * 765 * If an inode that is already part of the current filesystem sync is 766 * modified by the frontend, including by buffer flushes, the inode lock 767 * code detects the SYNCQ flag and moves the inode to the head of the 768 * flush-in-progress, then blocks until the flush has gotten past it. 769 */ 770 #define HAMMER2_INODE_MODIFIED 0x0001 771 #define HAMMER2_INODE_SROOT 0x0002 /* kmalloc special case */ 772 #define HAMMER2_INODE_RENAME_INPROG 0x0004 773 #define HAMMER2_INODE_ONRBTREE 0x0008 774 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_fsync */ 775 #define HAMMER2_INODE_UNUSED0020 0x0020 776 #define HAMMER2_INODE_ISUNLINKED 0x0040 777 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 778 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 779 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 780 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 781 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 782 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 783 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 784 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 785 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 786 787 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 788 HAMMER2_INODE_DIRTYDATA | \ 789 HAMMER2_INODE_DELETING | \ 790 HAMMER2_INODE_CREATING) 791 792 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 793 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 794 hammer2_tid_t); 795 796 /* 797 * Transaction management sub-structure under hammer2_pfs 798 */ 799 struct hammer2_trans { 800 uint32_t flags; 801 uint32_t sync_wait; 802 }; 803 804 typedef struct hammer2_trans hammer2_trans_t; 805 806 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 807 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 808 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 809 #define HAMMER2_TRANS_UNUSED10 0x10000000 810 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 811 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 812 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 813 814 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 815 #define HAMMER2_FREEMAP_HEUR_TYPES 8 816 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 817 HAMMER2_FREEMAP_HEUR_TYPES) 818 819 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 820 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 821 822 #define HAMMER2_FLUSH_TOP 0x0001 823 #define HAMMER2_FLUSH_ALL 0x0002 824 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 825 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 826 827 828 /* 829 * Hammer2 support thread element. 830 * 831 * Potentially many support threads can hang off of hammer2, primarily 832 * off the hammer2_pfs structure. Typically: 833 * 834 * td x Nodes A synchronization thread for each node. 835 * td x Nodes x workers Worker threads for frontend operations. 836 * td x 1 Bioq thread for logical buffer writes. 837 * 838 * In addition, the synchronization thread(s) associated with the 839 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 840 * and dedup scans. 841 */ 842 struct hammer2_thread { 843 struct hammer2_pfs *pmp; 844 struct hammer2_dev *hmp; 845 hammer2_xop_list_t xopq; 846 thread_t td; 847 uint32_t flags; 848 int depth; 849 int clindex; /* cluster element index */ 850 int repidx; 851 char *scratch; /* MAXPHYS */ 852 }; 853 854 typedef struct hammer2_thread hammer2_thread_t; 855 856 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 857 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 858 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 859 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 860 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 861 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 862 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 863 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 864 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 865 #define HAMMER2_THREAD_UNFREEZE 0x0200 866 867 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 868 HAMMER2_THREAD_REMASTER | \ 869 HAMMER2_THREAD_STOP | \ 870 HAMMER2_THREAD_FREEZE | \ 871 HAMMER2_THREAD_XOPQ) 872 873 /* 874 * Support structure for dedup heuristic. 875 */ 876 struct hammer2_dedup { 877 hammer2_off_t data_off; 878 uint64_t data_crc; 879 uint32_t ticks; 880 uint32_t saved_error; 881 }; 882 883 typedef struct hammer2_dedup hammer2_dedup_t; 884 885 /* 886 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 887 * 888 * This structure is used to distribute a VOP operation across multiple 889 * nodes. It provides a rendezvous for concurrent node execution and 890 * can be detached from the frontend operation to allow the frontend to 891 * return early. 892 * 893 * This structure also sequences operations on up to three inodes. 894 */ 895 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 896 int clindex); 897 898 struct hammer2_xop_desc { 899 hammer2_xop_func_t storage_func; /* local storage function */ 900 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 901 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 902 const char *id; 903 }; 904 905 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 906 907 struct hammer2_xop_fifo { 908 TAILQ_ENTRY(hammer2_xop_head) entry; 909 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 910 int errors[HAMMER2_XOPFIFO]; 911 int ri; 912 int wi; 913 int flags; 914 hammer2_thread_t *thr; 915 }; 916 917 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 918 919 #define HAMMER2_XOP_FIFO_RUN 0x0001 920 #define HAMMER2_XOP_FIFO_STALL 0x0002 921 922 struct hammer2_xop_head { 923 hammer2_xop_desc_t *desc; 924 hammer2_tid_t mtid; 925 struct hammer2_inode *ip1; 926 struct hammer2_inode *ip2; 927 struct hammer2_inode *ip3; 928 uint64_t run_mask; 929 uint64_t chk_mask; 930 int flags; 931 int state; 932 int error; 933 hammer2_key_t collect_key; 934 char *name1; 935 size_t name1_len; 936 char *name2; 937 size_t name2_len; 938 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 939 hammer2_cluster_t cluster; /* help collections */ 940 hammer2_io_t *focus_dio; 941 }; 942 943 typedef struct hammer2_xop_head hammer2_xop_head_t; 944 945 struct hammer2_xop_ipcluster { 946 hammer2_xop_head_t head; 947 }; 948 949 struct hammer2_xop_strategy { 950 hammer2_xop_head_t head; 951 hammer2_key_t lbase; 952 int finished; 953 hammer2_mtx_t lock; 954 struct bio *bio; 955 }; 956 957 struct hammer2_xop_readdir { 958 hammer2_xop_head_t head; 959 hammer2_key_t lkey; 960 }; 961 962 struct hammer2_xop_nresolve { 963 hammer2_xop_head_t head; 964 hammer2_key_t lhc; /* if name is NULL used lhc */ 965 }; 966 967 struct hammer2_xop_unlink { 968 hammer2_xop_head_t head; 969 int isdir; 970 int dopermanent; 971 }; 972 973 #define H2DOPERM_PERMANENT 0x01 974 #define H2DOPERM_FORCE 0x02 975 #define H2DOPERM_IGNINO 0x04 976 977 struct hammer2_xop_nrename { 978 hammer2_xop_head_t head; 979 hammer2_tid_t lhc; 980 int ip_key; 981 }; 982 983 struct hammer2_xop_scanlhc { 984 hammer2_xop_head_t head; 985 hammer2_key_t lhc; 986 }; 987 988 struct hammer2_xop_scanall { 989 hammer2_xop_head_t head; 990 hammer2_key_t key_beg; /* inclusive */ 991 hammer2_key_t key_end; /* inclusive */ 992 int resolve_flags; 993 int lookup_flags; 994 }; 995 996 struct hammer2_xop_lookup { 997 hammer2_xop_head_t head; 998 hammer2_key_t lhc; 999 }; 1000 1001 struct hammer2_xop_mkdirent { 1002 hammer2_xop_head_t head; 1003 hammer2_dirent_head_t dirent; 1004 hammer2_key_t lhc; 1005 }; 1006 1007 struct hammer2_xop_create { 1008 hammer2_xop_head_t head; 1009 hammer2_inode_meta_t meta; /* initial metadata */ 1010 hammer2_key_t lhc; 1011 int flags; 1012 }; 1013 1014 struct hammer2_xop_destroy { 1015 hammer2_xop_head_t head; 1016 }; 1017 1018 struct hammer2_xop_fsync { 1019 hammer2_xop_head_t head; 1020 hammer2_inode_meta_t meta; 1021 hammer2_off_t osize; 1022 u_int ipflags; 1023 int clear_directdata; 1024 }; 1025 1026 struct hammer2_xop_unlinkall { 1027 hammer2_xop_head_t head; 1028 hammer2_key_t key_beg; 1029 hammer2_key_t key_end; 1030 }; 1031 1032 struct hammer2_xop_connect { 1033 hammer2_xop_head_t head; 1034 hammer2_key_t lhc; 1035 }; 1036 1037 struct hammer2_xop_flush { 1038 hammer2_xop_head_t head; 1039 }; 1040 1041 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1042 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1043 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1044 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1045 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1046 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1047 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1048 typedef struct hammer2_xop_create hammer2_xop_create_t; 1049 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1050 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1051 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1052 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1053 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1054 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1055 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1056 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1057 1058 union hammer2_xop { 1059 hammer2_xop_head_t head; 1060 hammer2_xop_ipcluster_t xop_ipcluster; 1061 hammer2_xop_readdir_t xop_readdir; 1062 hammer2_xop_nresolve_t xop_nresolve; 1063 hammer2_xop_unlink_t xop_unlink; 1064 hammer2_xop_nrename_t xop_nrename; 1065 hammer2_xop_strategy_t xop_strategy; 1066 hammer2_xop_mkdirent_t xop_mkdirent; 1067 hammer2_xop_create_t xop_create; 1068 hammer2_xop_destroy_t xop_destroy; 1069 hammer2_xop_fsync_t xop_fsync; 1070 hammer2_xop_unlinkall_t xop_unlinkall; 1071 hammer2_xop_scanlhc_t xop_scanlhc; 1072 hammer2_xop_scanall_t xop_scanall; 1073 hammer2_xop_lookup_t xop_lookup; 1074 hammer2_xop_flush_t xop_flush; 1075 hammer2_xop_connect_t xop_connect; 1076 }; 1077 1078 typedef union hammer2_xop hammer2_xop_t; 1079 1080 /* 1081 * hammer2_xop_group - Manage XOP support threads. 1082 */ 1083 struct hammer2_xop_group { 1084 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1085 }; 1086 1087 typedef struct hammer2_xop_group hammer2_xop_group_t; 1088 1089 /* 1090 * flags to hammer2_xop_collect() 1091 */ 1092 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1093 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1094 1095 /* 1096 * flags to hammer2_xop_alloc() 1097 * 1098 * MODIFYING - This is a modifying transaction, allocate a mtid. 1099 * RECURSE - Recurse top-level inode (for root flushes) 1100 */ 1101 #define HAMMER2_XOP_MODIFYING 0x00000001 1102 #define HAMMER2_XOP_STRATEGY 0x00000002 1103 #define HAMMER2_XOP_INODE_STOP 0x00000004 1104 #define HAMMER2_XOP_VOLHDR 0x00000008 1105 #define HAMMER2_XOP_FSSYNC 0x00000010 1106 #define HAMMER2_XOP_IROOT 0x00000020 1107 1108 /* 1109 * Global (per partition) management structure, represents a hard block 1110 * device. Typically referenced by hammer2_chain structures when applicable. 1111 * Typically not used for network-managed elements. 1112 * 1113 * Note that a single hammer2_dev can be indirectly tied to multiple system 1114 * mount points. There is no direct relationship. System mounts are 1115 * per-cluster-id, not per-block-device, and a single hard mount might contain 1116 * many PFSs and those PFSs might combine together in various ways to form 1117 * the set of available clusters. 1118 */ 1119 struct hammer2_dev { 1120 struct vnode *devvp; /* device vnode */ 1121 int ronly; /* read-only mount */ 1122 int mount_count; /* number of actively mounted PFSs */ 1123 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1124 1125 struct malloc_type *mchain; 1126 int nipstacks; 1127 int maxipstacks; 1128 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1129 struct spinlock io_spin; /* iotree, iolruq access */ 1130 struct hammer2_io_tree iotree; 1131 int iofree_count; 1132 int freemap_relaxed; 1133 hammer2_chain_t vchain; /* anchor chain (topology) */ 1134 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1135 struct spinlock list_spin; 1136 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1137 struct lock vollk; /* lockmgr lock */ 1138 struct lock bulklk; /* bulkfree operation lock */ 1139 struct lock bflock; /* bulk-free manual function lock */ 1140 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1141 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1142 int volhdrno; /* last volhdrno written */ 1143 uint32_t hflags; /* HMNT2 flags applicable to device */ 1144 hammer2_off_t free_reserved; /* nominal free reserved */ 1145 hammer2_thread_t bfthr; /* bulk-free thread */ 1146 char devrepname[64]; /* for kprintf */ 1147 hammer2_ioc_bulkfree_t bflast; /* stats for last bulkfree run */ 1148 hammer2_volume_data_t voldata; 1149 hammer2_volume_data_t volsync; /* synchronized voldata */ 1150 }; 1151 1152 typedef struct hammer2_dev hammer2_dev_t; 1153 1154 /* 1155 * Helper functions (cluster must be locked for flags to be valid). 1156 */ 1157 static __inline 1158 int 1159 hammer2_chain_rdok(hammer2_chain_t *chain) 1160 { 1161 return (chain->error == 0); 1162 } 1163 1164 static __inline 1165 int 1166 hammer2_chain_wrok(hammer2_chain_t *chain) 1167 { 1168 return (chain->error == 0 && chain->hmp->ronly == 0); 1169 } 1170 1171 /* 1172 * Per-cluster management structure. This structure will be tied to a 1173 * system mount point if the system is mounting the PFS, but is also used 1174 * to manage clusters encountered during the super-root scan or received 1175 * via LNK_SPANs that might not be mounted. 1176 * 1177 * This structure is also used to represent the super-root that hangs off 1178 * of a hard mount point. The super-root is not really a cluster element. 1179 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1180 * this than to special case super-root manipulation in the hammer2_chain* 1181 * code as being only hammer2_dev-related. 1182 * 1183 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1184 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1185 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1186 * how many masters have been configured for a cluster and is always 1187 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1188 * iroot cluster and describes the PFS types of the nodes making up the 1189 * cluster. 1190 * 1191 * WARNING! Portions of this structure have deferred initialization. In 1192 * particular, if not mounted there will be no wthread. 1193 * umounted network PFSs will also be missing iroot and numerous 1194 * other fields will not be initialized prior to mount. 1195 * 1196 * Synchronization threads are chain-specific and only applicable 1197 * to local hard PFS entries. A hammer2_pfs structure may contain 1198 * more than one when multiple hard PFSs are present on the local 1199 * machine which require synchronization monitoring. Most PFSs 1200 * (such as snapshots) are 1xMASTER PFSs which do not need a 1201 * synchronization thread. 1202 * 1203 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1204 * hammer2_dev->mount_count when the pfs is associated with a mount 1205 * point. 1206 */ 1207 struct hammer2_pfs { 1208 struct mount *mp; 1209 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1210 uuid_t pfs_clid; 1211 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1212 hammer2_dev_t *force_local; /* only if 'local' mount */ 1213 hammer2_inode_t *iroot; /* PFS root inode */ 1214 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1215 char *pfs_names[HAMMER2_MAXCLUSTER]; 1216 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1217 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1218 hammer2_trans_t trans; 1219 struct lock lock; /* PFS lock for certain ops */ 1220 struct lock lock_nlink; /* rename and nlink lock */ 1221 struct netexport export; /* nfs export */ 1222 int unused00; 1223 int ronly; /* read-only mount */ 1224 int hflags; /* pfs-specific mount flags */ 1225 struct malloc_type *minode; 1226 struct malloc_type *mmsg; 1227 struct spinlock inum_spin; /* inumber lookup */ 1228 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1229 long inum_count; /* #of inodes in inum_tree */ 1230 struct spinlock lru_spin; /* inumber lookup */ 1231 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1232 int lru_count; /* #of chains on LRU */ 1233 int flags; 1234 hammer2_tid_t modify_tid; /* modify transaction id */ 1235 hammer2_tid_t inode_tid; /* inode allocator */ 1236 uint8_t pfs_nmasters; /* total masters */ 1237 uint8_t pfs_mode; /* operating mode PFSMODE */ 1238 uint8_t unused01; 1239 uint8_t unused02; 1240 int free_ticks; /* free_* calculations */ 1241 long inmem_inodes; 1242 hammer2_off_t free_reserved; 1243 hammer2_off_t free_nominal; 1244 uint32_t inmem_dirty_chains; 1245 int count_lwinprog; /* logical write in prog */ 1246 struct spinlock list_spin; 1247 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1248 struct depq_head depq; /* SIDEQ flagged inodes */ 1249 long sideq_count; /* total inodes on depq */ 1250 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1251 uint32_t cluster_flags; /* cached cluster flags */ 1252 int has_xop_threads; 1253 struct spinlock xop_spin; /* xop sequencer */ 1254 hammer2_xop_group_t *xop_groups; 1255 }; 1256 1257 typedef struct hammer2_pfs hammer2_pfs_t; 1258 1259 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1260 1261 /* 1262 * pmp->flags 1263 */ 1264 #define HAMMER2_PMPF_SPMP 0x00000001 1265 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1266 1267 /* 1268 * NOTE: The LRU list contains at least all the chains with refs == 0 1269 * that can be recycled, and may contain additional chains which 1270 * cannot. 1271 */ 1272 #define HAMMER2_LRU_LIMIT 4096 1273 1274 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1275 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1276 1277 #define HAMMER2_LWINPROG_WAITING 0x80000000 1278 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1279 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1280 1281 /* 1282 * hammer2_cluster_check 1283 */ 1284 #define HAMMER2_CHECK_NULL 0x00000001 1285 1286 /* 1287 * Misc 1288 */ 1289 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1290 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1291 #endif 1292 1293 #if defined(_KERNEL) 1294 1295 #ifdef MALLOC_DECLARE 1296 MALLOC_DECLARE(M_HAMMER2); 1297 #endif 1298 1299 #define ITOV(ip) ((ip)->vp) 1300 1301 /* 1302 * Currently locked chains retain the locked buffer cache buffer for 1303 * indirect blocks, and indirect blocks can be one of two sizes. The 1304 * device buffer has to match the case to avoid deadlocking recursive 1305 * chains that might otherwise try to access different offsets within 1306 * the same device buffer. 1307 */ 1308 static __inline 1309 int 1310 hammer2_devblkradix(int radix) 1311 { 1312 #if 0 1313 if (radix <= HAMMER2_LBUFRADIX) { 1314 return (HAMMER2_LBUFRADIX); 1315 } else { 1316 return (HAMMER2_PBUFRADIX); 1317 } 1318 #endif 1319 return (HAMMER2_PBUFRADIX); 1320 } 1321 1322 /* 1323 * XXX almost time to remove this. DIO uses PBUFSIZE exclusively now. 1324 */ 1325 static __inline 1326 size_t 1327 hammer2_devblksize(size_t bytes) 1328 { 1329 #if 0 1330 if (bytes <= HAMMER2_LBUFSIZE) { 1331 return(HAMMER2_LBUFSIZE); 1332 } else { 1333 KKASSERT(bytes <= HAMMER2_PBUFSIZE && 1334 (bytes ^ (bytes - 1)) == ((bytes << 1) - 1)); 1335 return (HAMMER2_PBUFSIZE); 1336 } 1337 #endif 1338 return (HAMMER2_PBUFSIZE); 1339 } 1340 1341 1342 static __inline 1343 hammer2_pfs_t * 1344 MPTOPMP(struct mount *mp) 1345 { 1346 return ((hammer2_pfs_t *)mp->mnt_data); 1347 } 1348 1349 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1350 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1351 1352 static __inline 1353 uint64_t 1354 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1355 { 1356 int bbeg; 1357 int bits; 1358 uint64_t mask; 1359 1360 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1361 HAMMER2_DEDUP_FRAGRADIX; 1362 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1363 HAMMER2_DEDUP_FRAGRADIX); 1364 mask = ((uint64_t)1 << bbeg) - 1; 1365 if (bbeg + bits == 64) 1366 mask = (uint64_t)-1; 1367 else 1368 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1369 1370 mask &= ~(((uint64_t)1 << bbeg) - 1); 1371 1372 return mask; 1373 } 1374 1375 static __inline 1376 int 1377 hammer2_error_to_errno(int error) 1378 { 1379 if (error) { 1380 if (error & HAMMER2_ERROR_EIO) 1381 error = EIO; 1382 else if (error & HAMMER2_ERROR_CHECK) 1383 error = EDOM; 1384 else if (error & HAMMER2_ERROR_ABORTED) 1385 error = EINTR; 1386 else if (error & HAMMER2_ERROR_BADBREF) 1387 error = EIO; 1388 else if (error & HAMMER2_ERROR_ENOSPC) 1389 error = ENOSPC; 1390 else if (error & HAMMER2_ERROR_ENOENT) 1391 error = ENOENT; 1392 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1393 error = ENOTEMPTY; 1394 else if (error & HAMMER2_ERROR_EAGAIN) 1395 error = EAGAIN; 1396 else if (error & HAMMER2_ERROR_ENOTDIR) 1397 error = ENOTDIR; 1398 else if (error & HAMMER2_ERROR_EISDIR) 1399 error = EISDIR; 1400 else if (error & HAMMER2_ERROR_EINPROGRESS) 1401 error = EINPROGRESS; 1402 else if (error & HAMMER2_ERROR_EEXIST) 1403 error = EEXIST; 1404 else 1405 error = EDOM; 1406 } 1407 return error; 1408 } 1409 1410 static __inline 1411 int 1412 hammer2_errno_to_error(int error) 1413 { 1414 switch(error) { 1415 case 0: 1416 return 0; 1417 case EIO: 1418 return HAMMER2_ERROR_EIO; 1419 case EINVAL: 1420 default: 1421 return HAMMER2_ERROR_EINVAL; 1422 } 1423 } 1424 1425 1426 extern struct vop_ops hammer2_vnode_vops; 1427 extern struct vop_ops hammer2_spec_vops; 1428 extern struct vop_ops hammer2_fifo_vops; 1429 extern struct hammer2_pfslist hammer2_pfslist; 1430 extern struct lock hammer2_mntlk; 1431 1432 1433 extern int hammer2_debug; 1434 extern int hammer2_xopgroups; 1435 extern long hammer2_debug_inode; 1436 extern int hammer2_cluster_meta_read; 1437 extern int hammer2_cluster_data_read; 1438 extern int hammer2_cluster_write; 1439 extern int hammer2_dedup_enable; 1440 extern int hammer2_always_compress; 1441 extern int hammer2_inval_enable; 1442 extern int hammer2_flush_pipe; 1443 extern int hammer2_dio_count; 1444 extern int hammer2_dio_limit; 1445 extern int hammer2_bulkfree_tps; 1446 extern int hammer2_worker_rmask; 1447 extern long hammer2_chain_allocs; 1448 extern long hammer2_chain_frees; 1449 extern long hammer2_limit_dirty_chains; 1450 extern long hammer2_limit_dirty_inodes; 1451 extern long hammer2_count_modified_chains; 1452 extern long hammer2_iod_invals; 1453 extern long hammer2_iod_file_read; 1454 extern long hammer2_iod_meta_read; 1455 extern long hammer2_iod_indr_read; 1456 extern long hammer2_iod_fmap_read; 1457 extern long hammer2_iod_volu_read; 1458 extern long hammer2_iod_file_write; 1459 extern long hammer2_iod_file_wembed; 1460 extern long hammer2_iod_file_wzero; 1461 extern long hammer2_iod_file_wdedup; 1462 extern long hammer2_iod_meta_write; 1463 extern long hammer2_iod_indr_write; 1464 extern long hammer2_iod_fmap_write; 1465 extern long hammer2_iod_volu_write; 1466 1467 extern long hammer2_process_xxhash64; 1468 extern long hammer2_process_icrc32; 1469 1470 extern struct objcache *cache_buffer_read; 1471 extern struct objcache *cache_buffer_write; 1472 extern struct objcache *cache_xops; 1473 1474 /* 1475 * hammer2_subr.c 1476 */ 1477 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1478 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1479 1480 int hammer2_signal_check(time_t *timep); 1481 const char *hammer2_error_str(int error); 1482 const char *hammer2_bref_type_str(hammer2_blockref_t *bref); 1483 1484 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1485 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1486 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1487 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1488 void hammer2_inode_unlock(hammer2_inode_t *ip); 1489 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1490 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1491 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1492 int clindex, hammer2_chain_t **parentp, int how); 1493 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1494 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1495 hammer2_mtx_state_t ostate); 1496 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1497 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1498 1499 void hammer2_dev_exlock(hammer2_dev_t *hmp); 1500 void hammer2_dev_shlock(hammer2_dev_t *hmp); 1501 void hammer2_dev_unlock(hammer2_dev_t *hmp); 1502 1503 int hammer2_get_dtype(uint8_t type); 1504 int hammer2_get_vtype(uint8_t type); 1505 uint8_t hammer2_get_obj_type(enum vtype vtype); 1506 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1507 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1508 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1509 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1510 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1511 1512 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1513 int hammer2_getradix(size_t bytes); 1514 1515 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1516 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1517 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1518 void hammer2_update_time(uint64_t *timep); 1519 void hammer2_adjreadcounter(hammer2_blockref_t *bref, size_t bytes); 1520 1521 /* 1522 * hammer2_inode.c 1523 */ 1524 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1525 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1526 hammer2_tid_t inum); 1527 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1528 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1529 void hammer2_inode_free(hammer2_inode_t *ip); 1530 void hammer2_inode_ref(hammer2_inode_t *ip); 1531 void hammer2_inode_drop(hammer2_inode_t *ip); 1532 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_inode_t *pip, 1533 hammer2_cluster_t *cluster); 1534 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1535 int idx); 1536 void hammer2_inode_modify(hammer2_inode_t *ip); 1537 void hammer2_inode_run_sideq(hammer2_pfs_t *pmp, int doall); 1538 1539 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1540 struct vattr *vap, struct ucred *cred, 1541 hammer2_key_t inum, int *errorp); 1542 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1543 const uint8_t *name, size_t name_len, 1544 int *errorp); 1545 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1546 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1547 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1548 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1549 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1550 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1551 size_t name_len, hammer2_key_t inum, uint8_t type); 1552 1553 /* 1554 * hammer2_chain.c 1555 */ 1556 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1557 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1558 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1559 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1560 hammer2_pfs_t *pmp, 1561 hammer2_blockref_t *bref); 1562 void hammer2_chain_core_init(hammer2_chain_t *chain); 1563 void hammer2_chain_ref(hammer2_chain_t *chain); 1564 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1565 void hammer2_chain_drop(hammer2_chain_t *chain); 1566 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1567 void hammer2_chain_unhold(hammer2_chain_t *chain); 1568 void hammer2_chain_rehold(hammer2_chain_t *chain); 1569 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1570 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1571 void hammer2_chain_load_data(hammer2_chain_t *chain); 1572 const hammer2_media_data_t *hammer2_chain_rdata(hammer2_chain_t *chain); 1573 hammer2_media_data_t *hammer2_chain_wdata(hammer2_chain_t *chain); 1574 1575 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1576 int clindex, int flags, 1577 hammer2_chain_t **parentp, 1578 hammer2_chain_t **chainp); 1579 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1580 hammer2_off_t dedup_off, int flags); 1581 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1582 hammer2_tid_t mtid, int flags); 1583 int hammer2_chain_resize(hammer2_chain_t *chain, 1584 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1585 int nradix, int flags); 1586 void hammer2_chain_unlock(hammer2_chain_t *chain); 1587 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1588 void hammer2_chain_wait(hammer2_chain_t *chain); 1589 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1590 hammer2_blockref_t *bref, int how); 1591 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1592 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1593 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1594 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1595 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1596 hammer2_key_t *key_nextp, 1597 hammer2_key_t key_beg, hammer2_key_t key_end, 1598 int *errorp, int flags); 1599 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1600 hammer2_chain_t *chain, 1601 hammer2_key_t *key_nextp, 1602 hammer2_key_t key_beg, hammer2_key_t key_end, 1603 int *errorp, int flags); 1604 int hammer2_chain_scan(hammer2_chain_t *parent, 1605 hammer2_chain_t **chainp, 1606 hammer2_blockref_t *bref, 1607 int *firstp, int flags); 1608 1609 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1610 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1611 int methods, hammer2_key_t key, int keybits, 1612 int type, size_t bytes, hammer2_tid_t mtid, 1613 hammer2_off_t dedup_off, int flags); 1614 void hammer2_chain_rename(hammer2_chain_t **parentp, 1615 hammer2_chain_t *chain, 1616 hammer2_tid_t mtid, int flags); 1617 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1618 hammer2_tid_t mtid, int flags); 1619 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1620 hammer2_chain_t *chain); 1621 void hammer2_chain_setflush(hammer2_chain_t *chain); 1622 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1623 hammer2_blockref_t *base, int count); 1624 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1625 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1626 1627 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1628 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1629 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1630 size_t name_len); 1631 1632 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1633 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1634 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1635 1636 void hammer2_base_delete(hammer2_chain_t *parent, 1637 hammer2_blockref_t *base, int count, 1638 hammer2_chain_t *chain, 1639 hammer2_blockref_t *obref); 1640 void hammer2_base_insert(hammer2_chain_t *parent, 1641 hammer2_blockref_t *base, int count, 1642 hammer2_chain_t *chain, 1643 hammer2_blockref_t *elm); 1644 1645 /* 1646 * hammer2_flush.c 1647 */ 1648 int hammer2_flush(hammer2_chain_t *chain, int istop); 1649 void hammer2_delayed_flush(hammer2_chain_t *chain); 1650 1651 /* 1652 * hammer2_trans.c 1653 */ 1654 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1655 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1656 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1657 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1658 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1659 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1660 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1661 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1662 const char *data); 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 void hammer2_io_callback(struct bio *bio); 1683 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1684 hammer2_io_t **diop); 1685 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1686 hammer2_io_t **diop); 1687 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1688 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1689 void hammer2_io_setdirty(hammer2_io_t *dio); 1690 1691 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1692 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1693 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1694 int lsize HAMMER2_IO_DEBUG_ARGS); 1695 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1696 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1697 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1698 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1699 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1700 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1701 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1702 1703 #ifndef HAMMER2_IO_DEBUG 1704 1705 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1706 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1707 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1708 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1709 #define hammer2_io_putblk(diop) \ 1710 _hammer2_io_putblk(diop) 1711 #define hammer2_io_bwrite(diop) \ 1712 _hammer2_io_bwrite((diop)) 1713 #define hammer2_io_bawrite(diop) \ 1714 _hammer2_io_bawrite((diop)) 1715 #define hammer2_io_bdwrite(diop) \ 1716 _hammer2_io_bdwrite((diop)) 1717 #define hammer2_io_brelse(diop) \ 1718 _hammer2_io_brelse((diop)) 1719 #define hammer2_io_bqrelse(diop) \ 1720 _hammer2_io_bqrelse((diop)) 1721 #define hammer2_io_ref(dio) \ 1722 _hammer2_io_ref((dio)) 1723 1724 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1725 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1726 1727 #else 1728 1729 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1730 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1731 __FILE__, __LINE__) 1732 1733 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1734 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1735 1736 #define hammer2_io_putblk(diop) \ 1737 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1738 1739 #define hammer2_io_bwrite(diop) \ 1740 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1741 #define hammer2_io_bawrite(diop) \ 1742 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1743 #define hammer2_io_bdwrite(diop) \ 1744 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1745 #define hammer2_io_brelse(diop) \ 1746 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1747 #define hammer2_io_bqrelse(diop) \ 1748 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1749 #define hammer2_io_ref(dio) \ 1750 _hammer2_io_ref((dio), __FILE__, __LINE__) 1751 1752 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1753 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1754 __FILE__, __LINE__) 1755 1756 #endif 1757 1758 /* 1759 * hammer2_thread.c 1760 */ 1761 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1762 void hammer2_thr_signal2(hammer2_thread_t *thr, 1763 uint32_t pflags, uint32_t nflags); 1764 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1765 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1766 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1767 void hammer2_thr_create(hammer2_thread_t *thr, 1768 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1769 const char *id, int clindex, int repidx, 1770 void (*func)(void *arg)); 1771 void hammer2_thr_delete(hammer2_thread_t *thr); 1772 void hammer2_thr_remaster(hammer2_thread_t *thr); 1773 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1774 void hammer2_thr_freeze(hammer2_thread_t *thr); 1775 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1776 int hammer2_thr_break(hammer2_thread_t *thr); 1777 void hammer2_primary_xops_thread(void *arg); 1778 1779 /* 1780 * hammer2_thread.c (XOP API) 1781 */ 1782 void hammer2_xop_group_init(hammer2_pfs_t *pmp, hammer2_xop_group_t *xgrp); 1783 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1784 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1785 const char *name, size_t name_len); 1786 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1787 const char *name, size_t name_len); 1788 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1789 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1790 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1791 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1792 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1793 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1794 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1795 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1796 int notidx); 1797 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1798 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1799 int hammer2_xop_active(hammer2_xop_head_t *xop); 1800 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1801 int clindex, int error); 1802 1803 /* 1804 * hammer2_synchro.c 1805 */ 1806 void hammer2_primary_sync_thread(void *arg); 1807 1808 /* 1809 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1810 * may be integrated into other source files. 1811 */ 1812 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1813 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1814 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1815 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1816 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1817 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1818 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1819 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1820 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1821 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1822 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1823 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1824 void *scratch, int clindex); 1825 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1826 void *scratch, int clindex); 1827 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1828 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1829 int clindex); 1830 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1831 int clindex); 1832 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1833 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1834 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1835 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1836 1837 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1841 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1842 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1844 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1845 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1846 int clindex); 1847 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1848 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1849 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1850 int clindex); 1851 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1852 int clindex); 1853 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1854 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1855 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1856 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1857 int clindex); 1858 1859 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1860 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1861 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1862 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1863 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1864 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1865 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1866 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1867 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1868 int clindex); 1869 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1870 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1871 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1872 int clindex); 1873 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1874 int clindex); 1875 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1876 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1877 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1878 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1879 int clindex); 1880 1881 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1882 extern hammer2_xop_desc_t hammer2_readdir_desc; 1883 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1884 extern hammer2_xop_desc_t hammer2_unlink_desc; 1885 extern hammer2_xop_desc_t hammer2_nrename_desc; 1886 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1887 extern hammer2_xop_desc_t hammer2_scanall_desc; 1888 extern hammer2_xop_desc_t hammer2_lookup_desc; 1889 extern hammer2_xop_desc_t hammer2_delete_desc; 1890 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1891 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1892 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1893 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1894 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1895 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1896 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1897 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1898 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1899 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1900 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1901 1902 /* 1903 * hammer2_msgops.c 1904 */ 1905 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1906 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1907 1908 /* 1909 * hammer2_vfsops.c 1910 */ 1911 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1912 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int *countp, char pfx, 1913 u_int flags); 1914 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1915 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1916 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1917 1918 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1919 const hammer2_inode_data_t *ripdata, 1920 hammer2_tid_t modify_tid, 1921 hammer2_dev_t *force_local); 1922 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1923 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1924 ino_t ino, struct vnode **vpp); 1925 1926 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1927 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1928 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 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 hammer2_cluster_t *hammer2_cluster_alloc(hammer2_pfs_t *pmp, 1943 hammer2_blockref_t *bref); 1944 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1945 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1946 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1947 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1948 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1949 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1950 int flags); 1951 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1952 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1953 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1954 1955 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1956 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1957 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1958 struct hammer2_ioc_bulkfree *bfi); 1959 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1960 hammer2_chain_t *chain); 1961 1962 /* 1963 * hammer2_iocom.c 1964 */ 1965 void hammer2_iocom_init(hammer2_dev_t *hmp); 1966 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1967 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1968 1969 /* 1970 * hammer2_strategy.c 1971 */ 1972 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1973 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1974 void hammer2_write_thread(void *arg); 1975 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1976 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1977 1978 /* 1979 * More complex inlines 1980 */ 1981 1982 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 1983 1984 static __inline 1985 const hammer2_media_data_t * 1986 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 1987 { 1988 hammer2_chain_t *focus; 1989 const void *data; 1990 1991 focus = xop->cluster.focus; 1992 if (focus->dio) { 1993 lockmgr(&focus->diolk, LK_SHARED); 1994 if ((xop->focus_dio = focus->dio) != NULL) { 1995 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 1996 hammer2_io_bkvasync(xop->focus_dio); 1997 } 1998 data = focus->data; 1999 lockmgr(&focus->diolk, LK_RELEASE); 2000 } else { 2001 data = focus->data; 2002 } 2003 2004 return data; 2005 } 2006 2007 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 2008 2009 static __inline 2010 void 2011 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 2012 { 2013 if (xop->focus_dio) 2014 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 2015 } 2016 2017 #endif /* !_KERNEL */ 2018 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 2019