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 * RBTREE 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 buf *bp; 295 off_t pbase; 296 uint64_t refs; 297 int psize; 298 int act; /* activity */ 299 int btype; /* approximate BREF_TYPE_* */ 300 int ticks; 301 int error; 302 #ifdef HAMMER2_IO_DEBUG 303 int debug_index; 304 #else 305 int unused01; 306 #endif 307 uint64_t dedup_valid; /* valid for dedup operation */ 308 uint64_t dedup_alloc; /* allocated / de-dupable */ 309 #ifdef HAMMER2_IO_DEBUG 310 const char *debug_file[HAMMER2_IO_DEBUG_COUNT]; 311 void *debug_td[HAMMER2_IO_DEBUG_COUNT]; 312 int debug_line[HAMMER2_IO_DEBUG_COUNT]; 313 uint64_t debug_refs[HAMMER2_IO_DEBUG_COUNT]; 314 #endif 315 }; 316 317 typedef struct hammer2_io hammer2_io_t; 318 319 #define HAMMER2_DIO_INPROG 0x8000000000000000LLU /* bio in progress */ 320 #define HAMMER2_DIO_GOOD 0x4000000000000000LLU /* dio->bp is stable */ 321 #define HAMMER2_DIO_WAITING 0x2000000000000000LLU /* wait on INPROG */ 322 #define HAMMER2_DIO_DIRTY 0x1000000000000000LLU /* flush last drop */ 323 #define HAMMER2_DIO_FLUSH 0x0800000000000000LLU /* immediate flush */ 324 325 #define HAMMER2_DIO_MASK 0x00FFFFFFFFFFFFFFLLU 326 327 /* 328 * Primary chain structure keeps track of the topology in-memory. 329 */ 330 struct hammer2_chain { 331 hammer2_mtx_t lock; 332 hammer2_chain_core_t core; 333 RB_ENTRY(hammer2_chain) rbnode; /* live chain(s) */ 334 hammer2_blockref_t bref; 335 struct hammer2_chain *parent; 336 struct hammer2_dev *hmp; 337 struct hammer2_pfs *pmp; /* A PFS or super-root (spmp) */ 338 339 struct lock diolk; /* xop focus interlock */ 340 hammer2_io_t *dio; /* physical data buffer */ 341 hammer2_media_data_t *data; /* data pointer shortcut */ 342 u_int bytes; /* physical data size */ 343 u_int flags; 344 u_int refs; 345 u_int lockcnt; 346 int error; /* on-lock data error state */ 347 int cache_index; /* heur speeds up lookup */ 348 349 TAILQ_ENTRY(hammer2_chain) lru_node; /* 0-refs LRU */ 350 }; 351 352 typedef struct hammer2_chain hammer2_chain_t; 353 354 int hammer2_chain_cmp(hammer2_chain_t *chain1, hammer2_chain_t *chain2); 355 RB_PROTOTYPE(hammer2_chain_tree, hammer2_chain, rbnode, hammer2_chain_cmp); 356 357 /* 358 * Special notes on flags: 359 * 360 * INITIAL - This flag allows a chain to be created and for storage to 361 * be allocated without having to immediately instantiate the 362 * related buffer. The data is assumed to be all-zeros. It 363 * is primarily used for indirect blocks. 364 * 365 * MODIFIED - The chain's media data has been modified. Prevents chain 366 * free on lastdrop if still in the topology. 367 * 368 * UPDATE - Chain might not be modified but parent blocktable needs 369 * an update. Prevents chain free on lastdrop if still in 370 * the topology. 371 * 372 * BMAPPED - Indicates that the chain is present in the parent blockmap. 373 * 374 * BMAPUPD - Indicates that the chain is present but needs to be updated 375 * in the parent blockmap. 376 */ 377 #define HAMMER2_CHAIN_MODIFIED 0x00000001 /* dirty chain data */ 378 #define HAMMER2_CHAIN_ALLOCATED 0x00000002 /* kmalloc'd chain */ 379 #define HAMMER2_CHAIN_DESTROY 0x00000004 380 #define HAMMER2_CHAIN_DEDUPABLE 0x00000008 /* registered w/dedup */ 381 #define HAMMER2_CHAIN_DELETED 0x00000010 /* deleted chain */ 382 #define HAMMER2_CHAIN_INITIAL 0x00000020 /* initial create */ 383 #define HAMMER2_CHAIN_UPDATE 0x00000040 /* need parent update */ 384 #define HAMMER2_CHAIN_NOTTESTED 0x00000080 /* crc not generated */ 385 #define HAMMER2_CHAIN_TESTEDGOOD 0x00000100 /* crc tested good */ 386 #define HAMMER2_CHAIN_ONFLUSH 0x00000200 /* on a flush list */ 387 #define HAMMER2_CHAIN_UNUSED0400 0x00000400 388 #define HAMMER2_CHAIN_VOLUMESYNC 0x00000800 /* needs volume sync */ 389 #define HAMMER2_CHAIN_UNUSED1000 0x00001000 390 #define HAMMER2_CHAIN_COUNTEDBREFS 0x00002000 /* block table stats */ 391 #define HAMMER2_CHAIN_ONRBTREE 0x00004000 /* on parent RB tree */ 392 #define HAMMER2_CHAIN_ONLRU 0x00008000 /* on LRU list */ 393 #define HAMMER2_CHAIN_UNUSED10000 0x00010000 394 #define HAMMER2_CHAIN_RELEASE 0x00020000 /* don't keep around */ 395 #define HAMMER2_CHAIN_BMAPPED 0x00040000 /* present in blkmap */ 396 #define HAMMER2_CHAIN_BMAPUPD 0x00080000 /* +needs updating */ 397 #define HAMMER2_CHAIN_IOINPROG 0x00100000 /* I/O interlock */ 398 #define HAMMER2_CHAIN_IOSIGNAL 0x00200000 /* I/O interlock */ 399 #define HAMMER2_CHAIN_PFSBOUNDARY 0x00400000 /* super->pfs inode */ 400 #define HAMMER2_CHAIN_HINT_LEAF_COUNT 0x00800000 /* redo leaf count */ 401 #define HAMMER2_CHAIN_LRUHINT 0x01000000 /* was reused */ 402 403 #define HAMMER2_CHAIN_FLUSH_MASK (HAMMER2_CHAIN_MODIFIED | \ 404 HAMMER2_CHAIN_UPDATE | \ 405 HAMMER2_CHAIN_ONFLUSH | \ 406 HAMMER2_CHAIN_DESTROY) 407 408 /* 409 * Hammer2 error codes, used by chain->error and cluster->error. The error 410 * code is typically set on-lock unless no I/O was requested, and set on 411 * I/O otherwise. If set for a cluster it generally means that the cluster 412 * code could not find a valid copy to present. 413 * 414 * All H2 error codes are flags and can be accumulated by ORing them 415 * together. 416 * 417 * IO - An I/O error occurred 418 * CHECK - I/O succeeded but did not match the check code 419 * INCOMPLETE - A cluster is not complete enough to use, or 420 * a chain cannot be loaded because its parent has an error. 421 * 422 * NOTE: API allows callers to check zero/non-zero to determine if an error 423 * condition exists. 424 * 425 * NOTE: Chain's data field is usually NULL on an IO error but not necessarily 426 * NULL on other errors. Check chain->error, not chain->data. 427 */ 428 #define HAMMER2_ERROR_NONE 0 /* no error (must be 0) */ 429 #define HAMMER2_ERROR_EIO 0x00000001 /* device I/O error */ 430 #define HAMMER2_ERROR_CHECK 0x00000002 /* check code error */ 431 #define HAMMER2_ERROR_INCOMPLETE 0x00000004 /* incomplete cluster */ 432 #define HAMMER2_ERROR_DEPTH 0x00000008 /* tmp depth limit */ 433 #define HAMMER2_ERROR_BADBREF 0x00000010 /* illegal bref */ 434 #define HAMMER2_ERROR_ENOSPC 0x00000020 /* allocation failure */ 435 #define HAMMER2_ERROR_ENOENT 0x00000040 /* entry not found */ 436 #define HAMMER2_ERROR_ENOTEMPTY 0x00000080 /* dir not empty */ 437 #define HAMMER2_ERROR_EAGAIN 0x00000100 /* retry */ 438 #define HAMMER2_ERROR_ENOTDIR 0x00000200 /* not directory */ 439 #define HAMMER2_ERROR_EISDIR 0x00000400 /* is directory */ 440 #define HAMMER2_ERROR_EINPROGRESS 0x00000800 /* already running */ 441 #define HAMMER2_ERROR_ABORTED 0x00001000 /* aborted operation */ 442 #define HAMMER2_ERROR_EOF 0x00002000 /* end of scan */ 443 #define HAMMER2_ERROR_EINVAL 0x00004000 /* catch-all */ 444 #define HAMMER2_ERROR_EEXIST 0x00008000 /* entry exists */ 445 #define HAMMER2_ERROR_EDEADLK 0x00010000 446 #define HAMMER2_ERROR_ESRCH 0x00020000 447 #define HAMMER2_ERROR_ETIMEDOUT 0x00040000 448 449 /* 450 * Flags passed to hammer2_chain_lookup() and hammer2_chain_next() 451 * 452 * NOTES: 453 * NODATA - Asks that the chain->data not be resolved in order 454 * to avoid I/O. 455 * 456 * NODIRECT - Prevents a lookup of offset 0 in an inode from returning 457 * the inode itself if the inode is in DIRECTDATA mode 458 * (i.e. file is <= 512 bytes). Used by the synchronization 459 * code to prevent confusion. 460 * 461 * SHARED - The input chain is expected to be locked shared, 462 * and the output chain is locked shared. 463 * 464 * MATCHIND - Allows an indirect block / freemap node to be returned 465 * when the passed key range matches the radix. Remember 466 * that key_end is inclusive (e.g. {0x000,0xFFF}, 467 * not {0x000,0x1000}). 468 * 469 * (Cannot be used for remote or cluster ops). 470 * 471 * ALWAYS - Always resolve the data. If ALWAYS and NODATA are both 472 * missing, bulk file data is not resolved but inodes and 473 * other meta-data will. 474 */ 475 #define HAMMER2_LOOKUP_UNUSED0001 0x00000001 476 #define HAMMER2_LOOKUP_NODATA 0x00000002 /* data left NULL */ 477 #define HAMMER2_LOOKUP_NODIRECT 0x00000004 /* no offset=0 DD */ 478 #define HAMMER2_LOOKUP_SHARED 0x00000100 479 #define HAMMER2_LOOKUP_MATCHIND 0x00000200 /* return all chains */ 480 #define HAMMER2_LOOKUP_UNUSED0400 0x00000400 481 #define HAMMER2_LOOKUP_ALWAYS 0x00000800 /* resolve data */ 482 #define HAMMER2_LOOKUP_UNUSED1000 0x00001000 483 484 /* 485 * Flags passed to hammer2_chain_modify() and hammer2_chain_resize() 486 * 487 * NOTE: OPTDATA allows us to avoid instantiating buffers for INDIRECT 488 * blocks in the INITIAL-create state. 489 */ 490 #define HAMMER2_MODIFY_OPTDATA 0x00000002 /* data can be NULL */ 491 492 /* 493 * Flags passed to hammer2_chain_lock() 494 * 495 * NOTE: RDONLY is set to optimize cluster operations when *no* modifications 496 * will be made to either the cluster being locked or any underlying 497 * cluster. It allows the cluster to lock and access data for a subset 498 * of available nodes instead of all available nodes. 499 * 500 * NOTE: NONBLOCK is only used for hammer2_chain_repparent() and getparent(), 501 * other functions (e.g. hammer2_chain_lookup(), etc) can't handle its 502 * operation. 503 */ 504 #define HAMMER2_RESOLVE_NEVER 1 505 #define HAMMER2_RESOLVE_MAYBE 2 506 #define HAMMER2_RESOLVE_ALWAYS 3 507 #define HAMMER2_RESOLVE_MASK 0x0F 508 509 #define HAMMER2_RESOLVE_SHARED 0x10 /* request shared lock */ 510 #define HAMMER2_RESOLVE_LOCKAGAIN 0x20 /* another shared lock */ 511 #define HAMMER2_RESOLVE_UNUSED40 0x40 512 #define HAMMER2_RESOLVE_NONBLOCK 0x80 /* non-blocking */ 513 514 /* 515 * Flags passed to hammer2_chain_delete() 516 */ 517 #define HAMMER2_DELETE_PERMANENT 0x0001 518 519 /* 520 * Flags passed to hammer2_chain_insert() or hammer2_chain_rename() 521 * or hammer2_chain_create(). 522 */ 523 #define HAMMER2_INSERT_PFSROOT 0x0004 524 #define HAMMER2_INSERT_SAMEPARENT 0x0008 525 526 /* 527 * hammer2_freemap_adjust() 528 */ 529 #define HAMMER2_FREEMAP_DORECOVER 1 530 #define HAMMER2_FREEMAP_DOMAYFREE 2 531 #define HAMMER2_FREEMAP_DOREALFREE 3 532 533 /* 534 * HAMMER2 cluster - A set of chains representing the same entity. 535 * 536 * hammer2_cluster typically represents a temporary set of representitive 537 * chains. The one exception is that a hammer2_cluster is embedded in 538 * hammer2_inode. This embedded cluster is ONLY used to track the 539 * representitive chains and cannot be directly locked. 540 * 541 * A cluster is usually temporary (and thus per-thread) for locking purposes, 542 * allowing us to embed the asynchronous storage required for cluster 543 * operations in the cluster itself and adjust the state and status without 544 * having to worry too much about SMP issues. 545 * 546 * The exception is the cluster embedded in the hammer2_inode structure. 547 * This is used to cache the cluster state on an inode-by-inode basis. 548 * Individual hammer2_chain structures not incorporated into clusters might 549 * also stick around to cache miscellanious elements. 550 * 551 * Because the cluster is a 'working copy' and is usually subject to cluster 552 * quorum rules, it is quite possible for us to end up with an insufficient 553 * number of live chains to execute an operation. If an insufficient number 554 * of chains remain in a working copy, the operation may have to be 555 * downgraded, retried, stall until the requisit number of chains are 556 * available, or possibly even error out depending on the mount type. 557 * 558 * A cluster's focus is set when it is locked. The focus can only be set 559 * to a chain still part of the synchronized set. 560 */ 561 #define HAMMER2_XOPFIFO 16 562 #define HAMMER2_XOPFIFO_MASK (HAMMER2_XOPFIFO - 1) 563 #define HAMMER2_XOPGROUPS_MIN 32 564 565 #define HAMMER2_MAXCLUSTER 8 566 #define HAMMER2_XOPMASK_CLUSTER ((uint64_t)((1LLU << HAMMER2_MAXCLUSTER) - 1)) 567 #define HAMMER2_XOPMASK_VOP ((uint64_t)0x0000000080000000LLU) 568 #define HAMMER2_XOPMASK_FIFOW ((uint64_t)0x0000000040000000LLU) 569 #define HAMMER2_XOPMASK_WAIT ((uint64_t)0x0000000020000000LLU) 570 #define HAMMER2_XOPMASK_FEED ((uint64_t)0x0000000100000000LLU) 571 572 #define HAMMER2_XOPMASK_ALLDONE (HAMMER2_XOPMASK_VOP | HAMMER2_XOPMASK_CLUSTER) 573 574 struct hammer2_cluster_item { 575 hammer2_chain_t *chain; 576 int error; 577 uint32_t flags; 578 }; 579 580 typedef struct hammer2_cluster_item hammer2_cluster_item_t; 581 582 /* 583 * INVALID - Invalid for focus, i.e. not part of synchronized set. 584 * Once set, this bit is sticky across operations. 585 * 586 * FEMOD - Indicates that front-end modifying operations can 587 * mess with this entry and MODSYNC will copy also 588 * effect it. 589 */ 590 #define HAMMER2_CITEM_INVALID 0x00000001 591 #define HAMMER2_CITEM_FEMOD 0x00000002 592 #define HAMMER2_CITEM_NULL 0x00000004 593 594 struct hammer2_cluster { 595 int refs; /* track for deallocation */ 596 int ddflag; 597 struct hammer2_pfs *pmp; 598 uint32_t flags; 599 int nchains; 600 int error; /* error code valid on lock */ 601 int focus_index; 602 hammer2_chain_t *focus; /* current focus (or mod) */ 603 hammer2_cluster_item_t array[HAMMER2_MAXCLUSTER]; 604 }; 605 606 typedef struct hammer2_cluster hammer2_cluster_t; 607 608 /* 609 * WRHARD - Hard mounts can write fully synchronized 610 * RDHARD - Hard mounts can read fully synchronized 611 * UNHARD - Unsynchronized masters present 612 * NOHARD - No masters visible 613 * WRSOFT - Soft mounts can write to at least the SOFT_MASTER 614 * RDSOFT - Soft mounts can read from at least a SOFT_SLAVE 615 * UNSOFT - Unsynchronized slaves present 616 * NOSOFT - No slaves visible 617 * RDSLAVE - slaves are accessible (possibly unsynchronized or remote). 618 * MSYNCED - All masters are fully synchronized 619 * SSYNCED - All known local slaves are fully synchronized to masters 620 * 621 * All available masters are always incorporated. All PFSs belonging to a 622 * cluster (master, slave, copy, whatever) always try to synchronize the 623 * total number of known masters in the PFSs root inode. 624 * 625 * A cluster might have access to many slaves, copies, or caches, but we 626 * have a limited number of cluster slots. Any such elements which are 627 * directly mounted from block device(s) will always be incorporated. Note 628 * that SSYNCED only applies to such elements which are directly mounted, 629 * not to any remote slaves, copies, or caches that could be available. These 630 * bits are used to monitor and drive our synchronization threads. 631 * 632 * When asking the question 'is any data accessible at all', then a simple 633 * test against (RDHARD|RDSOFT|RDSLAVE) gives you the answer. If any of 634 * these bits are set the object can be read with certain caveats: 635 * RDHARD - no caveats. RDSOFT - authoritative but might not be synchronized. 636 * and RDSLAVE - not authoritative, has some data but it could be old or 637 * incomplete. 638 * 639 * When both soft and hard mounts are available, data will be read and written 640 * via the soft mount only. But all might be in the cluster because 641 * background synchronization threads still need to do their work. 642 */ 643 #define HAMMER2_CLUSTER_INODE 0x00000001 /* embedded in inode struct */ 644 #define HAMMER2_CLUSTER_UNUSED2 0x00000002 645 #define HAMMER2_CLUSTER_LOCKED 0x00000004 /* cluster lks not recursive */ 646 #define HAMMER2_CLUSTER_WRHARD 0x00000100 /* hard-mount can write */ 647 #define HAMMER2_CLUSTER_RDHARD 0x00000200 /* hard-mount can read */ 648 #define HAMMER2_CLUSTER_UNHARD 0x00000400 /* unsynchronized masters */ 649 #define HAMMER2_CLUSTER_NOHARD 0x00000800 /* no masters visible */ 650 #define HAMMER2_CLUSTER_WRSOFT 0x00001000 /* soft-mount can write */ 651 #define HAMMER2_CLUSTER_RDSOFT 0x00002000 /* soft-mount can read */ 652 #define HAMMER2_CLUSTER_UNSOFT 0x00004000 /* unsynchronized slaves */ 653 #define HAMMER2_CLUSTER_NOSOFT 0x00008000 /* no slaves visible */ 654 #define HAMMER2_CLUSTER_MSYNCED 0x00010000 /* all masters synchronized */ 655 #define HAMMER2_CLUSTER_SSYNCED 0x00020000 /* known slaves synchronized */ 656 657 #define HAMMER2_CLUSTER_ANYDATA ( HAMMER2_CLUSTER_RDHARD | \ 658 HAMMER2_CLUSTER_RDSOFT | \ 659 HAMMER2_CLUSTER_RDSLAVE) 660 661 #define HAMMER2_CLUSTER_RDOK ( HAMMER2_CLUSTER_RDHARD | \ 662 HAMMER2_CLUSTER_RDSOFT) 663 664 #define HAMMER2_CLUSTER_WROK ( HAMMER2_CLUSTER_WRHARD | \ 665 HAMMER2_CLUSTER_WRSOFT) 666 667 #define HAMMER2_CLUSTER_ZFLAGS ( HAMMER2_CLUSTER_WRHARD | \ 668 HAMMER2_CLUSTER_RDHARD | \ 669 HAMMER2_CLUSTER_WRSOFT | \ 670 HAMMER2_CLUSTER_RDSOFT | \ 671 HAMMER2_CLUSTER_MSYNCED | \ 672 HAMMER2_CLUSTER_SSYNCED) 673 674 /* 675 * Helper functions (cluster must be locked for flags to be valid). 676 */ 677 static __inline 678 int 679 hammer2_cluster_rdok(hammer2_cluster_t *cluster) 680 { 681 return (cluster->flags & HAMMER2_CLUSTER_RDOK); 682 } 683 684 static __inline 685 int 686 hammer2_cluster_wrok(hammer2_cluster_t *cluster) 687 { 688 return (cluster->flags & HAMMER2_CLUSTER_WROK); 689 } 690 691 RB_HEAD(hammer2_inode_tree, hammer2_inode); /* ip->rbnode */ 692 TAILQ_HEAD(inoq_head, hammer2_inode); /* ip->entry */ 693 TAILQ_HEAD(depq_head, hammer2_depend); /* depend->entry */ 694 695 struct hammer2_depend { 696 TAILQ_ENTRY(hammer2_depend) entry; 697 struct inoq_head sideq; 698 long count; 699 int pass2; 700 int unused01; 701 }; 702 703 typedef struct hammer2_depend hammer2_depend_t; 704 705 /* 706 * A hammer2 inode. 707 * 708 * NOTE: The inode-embedded cluster is never used directly for I/O (since 709 * it may be shared). Instead it will be replicated-in and synchronized 710 * back out if changed. 711 */ 712 struct hammer2_inode { 713 RB_ENTRY(hammer2_inode) rbnode; /* inumber lookup (HL) */ 714 TAILQ_ENTRY(hammer2_inode) entry; /* SYNCQ/SIDEQ */ 715 hammer2_depend_t *depend; /* non-NULL if SIDEQ */ 716 hammer2_depend_t depend_static; /* (in-place allocation) */ 717 hammer2_mtx_t lock; /* inode lock */ 718 hammer2_mtx_t truncate_lock; /* prevent truncates */ 719 struct hammer2_pfs *pmp; /* PFS mount */ 720 struct vnode *vp; 721 hammer2_spin_t cluster_spin; /* update cluster */ 722 hammer2_cluster_t cluster; 723 struct lockf advlock; 724 u_int flags; 725 u_int refs; /* +vpref, +flushref */ 726 uint8_t comp_heuristic; 727 hammer2_inode_meta_t meta; /* copy of meta-data */ 728 hammer2_off_t osize; 729 }; 730 731 typedef struct hammer2_inode hammer2_inode_t; 732 733 /* 734 * MODIFIED - Inode is in a modified state, ip->meta may have changes. 735 * RESIZED - Inode truncated (any) or inode extended beyond 736 * EMBEDDED_BYTES. 737 * 738 * SYNCQ - Inode is included in the current filesystem sync. The 739 * DELETING and CREATING flags will be acted upon. 740 * 741 * SIDEQ - Inode has likely been disconnected from the vnode topology 742 * and so is not visible to the vnode-based filesystem syncer 743 * code, but is dirty and must be included in the next 744 * filesystem sync. These inodes are moved to the SYNCQ at 745 * the time the sync occurs. 746 * 747 * Inodes are not placed on this queue simply because they have 748 * become dirty, if a vnode is attached. 749 * 750 * DELETING - Inode is flagged for deletion during the next filesystem 751 * sync. That is, the inode's chain is currently connected 752 * and must be deleting during the current or next fs sync. 753 * 754 * CREATING - Inode is flagged for creation during the next filesystem 755 * sync. That is, the inode's chain topology exists (so 756 * kernel buffer flushes can occur), but is currently 757 * disconnected and must be inserted during the current or 758 * next fs sync. If the DELETING flag is also set, the 759 * topology can be thrown away instead. 760 * 761 * If an inode that is already part of the current filesystem sync is 762 * modified by the frontend, including by buffer flushes, the inode lock 763 * code detects the SYNCQ flag and moves the inode to the head of the 764 * flush-in-progress, then blocks until the flush has gotten past it. 765 */ 766 #define HAMMER2_INODE_MODIFIED 0x0001 767 #define HAMMER2_INODE_SROOT 0x0002 768 #define HAMMER2_INODE_UNUSED0004 0x0004 769 #define HAMMER2_INODE_ONRBTREE 0x0008 770 #define HAMMER2_INODE_RESIZED 0x0010 /* requires inode_chain_sync */ 771 #define HAMMER2_INODE_UNUSED0020 0x0020 772 #define HAMMER2_INODE_ISUNLINKED 0x0040 773 #define HAMMER2_INODE_METAGOOD 0x0080 /* inode meta-data good */ 774 #define HAMMER2_INODE_SIDEQ 0x0100 /* on side processing queue */ 775 #define HAMMER2_INODE_NOSIDEQ 0x0200 /* disable sideq operation */ 776 #define HAMMER2_INODE_DIRTYDATA 0x0400 /* interlocks inode flush */ 777 #define HAMMER2_INODE_SYNCQ 0x0800 /* sync interlock, sequenced */ 778 #define HAMMER2_INODE_DELETING 0x1000 /* sync interlock, chain topo */ 779 #define HAMMER2_INODE_CREATING 0x2000 /* sync interlock, chain topo */ 780 #define HAMMER2_INODE_SYNCQ_WAKEUP 0x4000 /* sync interlock wakeup */ 781 #define HAMMER2_INODE_SYNCQ_PASS2 0x8000 /* force retry delay */ 782 783 #define HAMMER2_INODE_DIRTY (HAMMER2_INODE_MODIFIED | \ 784 HAMMER2_INODE_DIRTYDATA | \ 785 HAMMER2_INODE_DELETING | \ 786 HAMMER2_INODE_CREATING) 787 788 int hammer2_inode_cmp(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 789 RB_PROTOTYPE2(hammer2_inode_tree, hammer2_inode, rbnode, hammer2_inode_cmp, 790 hammer2_tid_t); 791 792 /* 793 * Transaction management sub-structure under hammer2_pfs 794 */ 795 struct hammer2_trans { 796 uint32_t flags; 797 uint32_t sync_wait; 798 }; 799 800 typedef struct hammer2_trans hammer2_trans_t; 801 802 #define HAMMER2_TRANS_ISFLUSH 0x80000000 /* flush code */ 803 #define HAMMER2_TRANS_BUFCACHE 0x40000000 /* bio strategy */ 804 #define HAMMER2_TRANS_SIDEQ 0x20000000 /* run sideq */ 805 #define HAMMER2_TRANS_UNUSED10 0x10000000 806 #define HAMMER2_TRANS_WAITING 0x08000000 /* someone waiting */ 807 #define HAMMER2_TRANS_RESCAN 0x04000000 /* rescan sideq */ 808 #define HAMMER2_TRANS_MASK 0x00FFFFFF /* count mask */ 809 810 #define HAMMER2_FREEMAP_HEUR_NRADIX 4 /* pwr 2 PBUFRADIX-LBUFRADIX */ 811 #define HAMMER2_FREEMAP_HEUR_TYPES 8 812 #define HAMMER2_FREEMAP_HEUR_SIZE (HAMMER2_FREEMAP_HEUR_NRADIX * \ 813 HAMMER2_FREEMAP_HEUR_TYPES) 814 815 #define HAMMER2_DEDUP_HEUR_SIZE (65536 * 4) 816 #define HAMMER2_DEDUP_HEUR_MASK (HAMMER2_DEDUP_HEUR_SIZE - 1) 817 818 #define HAMMER2_FLUSH_TOP 0x0001 819 #define HAMMER2_FLUSH_ALL 0x0002 820 #define HAMMER2_FLUSH_INODE_STOP 0x0004 /* stop at sub-inode */ 821 #define HAMMER2_FLUSH_FSSYNC 0x0008 /* part of filesystem sync */ 822 823 824 /* 825 * Hammer2 support thread element. 826 * 827 * Potentially many support threads can hang off of hammer2, primarily 828 * off the hammer2_pfs structure. Typically: 829 * 830 * td x Nodes A synchronization thread for each node. 831 * td x Nodes x workers Worker threads for frontend operations. 832 * td x 1 Bioq thread for logical buffer writes. 833 * 834 * In addition, the synchronization thread(s) associated with the 835 * super-root PFS (spmp) for a node is responsible for automatic bulkfree 836 * and dedup scans. 837 */ 838 struct hammer2_thread { 839 struct hammer2_pfs *pmp; 840 struct hammer2_dev *hmp; 841 hammer2_xop_list_t xopq; 842 thread_t td; 843 uint32_t flags; 844 int depth; 845 int clindex; /* cluster element index */ 846 int repidx; 847 char *scratch; /* MAXPHYS */ 848 }; 849 850 typedef struct hammer2_thread hammer2_thread_t; 851 852 #define HAMMER2_THREAD_UNMOUNTING 0x0001 /* unmount request */ 853 #define HAMMER2_THREAD_DEV 0x0002 /* related to dev, not pfs */ 854 #define HAMMER2_THREAD_WAITING 0x0004 /* thread in idle tsleep */ 855 #define HAMMER2_THREAD_REMASTER 0x0008 /* remaster request */ 856 #define HAMMER2_THREAD_STOP 0x0010 /* exit request */ 857 #define HAMMER2_THREAD_FREEZE 0x0020 /* force idle */ 858 #define HAMMER2_THREAD_FROZEN 0x0040 /* thread is frozen */ 859 #define HAMMER2_THREAD_XOPQ 0x0080 /* work pending */ 860 #define HAMMER2_THREAD_STOPPED 0x0100 /* thread has stopped */ 861 #define HAMMER2_THREAD_UNFREEZE 0x0200 862 863 #define HAMMER2_THREAD_WAKEUP_MASK (HAMMER2_THREAD_UNMOUNTING | \ 864 HAMMER2_THREAD_REMASTER | \ 865 HAMMER2_THREAD_STOP | \ 866 HAMMER2_THREAD_FREEZE | \ 867 HAMMER2_THREAD_XOPQ) 868 869 /* 870 * Support structure for dedup heuristic. 871 */ 872 struct hammer2_dedup { 873 hammer2_off_t data_off; 874 uint64_t data_crc; 875 uint32_t ticks; 876 uint32_t saved_error; 877 }; 878 879 typedef struct hammer2_dedup hammer2_dedup_t; 880 881 /* 882 * hammer2_xop - container for VOP/XOP operation (allocated, not on stack). 883 * 884 * This structure is used to distribute a VOP operation across multiple 885 * nodes. It provides a rendezvous for concurrent node execution and 886 * can be detached from the frontend operation to allow the frontend to 887 * return early. 888 * 889 * This structure also sequences operations on up to three inodes. 890 */ 891 typedef void (*hammer2_xop_func_t)(union hammer2_xop *xop, void *scratch, 892 int clindex); 893 894 struct hammer2_xop_desc { 895 hammer2_xop_func_t storage_func; /* local storage function */ 896 hammer2_xop_func_t dmsg_dispatch; /* dmsg dispatch function */ 897 hammer2_xop_func_t dmsg_process; /* dmsg processing function */ 898 const char *id; 899 }; 900 901 typedef struct hammer2_xop_desc hammer2_xop_desc_t; 902 903 struct hammer2_xop_fifo { 904 TAILQ_ENTRY(hammer2_xop_head) entry; 905 hammer2_chain_t *array[HAMMER2_XOPFIFO]; 906 int errors[HAMMER2_XOPFIFO]; 907 int ri; 908 int wi; 909 int flags; 910 hammer2_thread_t *thr; 911 }; 912 913 typedef struct hammer2_xop_fifo hammer2_xop_fifo_t; 914 915 #define HAMMER2_XOP_FIFO_RUN 0x0001 916 #define HAMMER2_XOP_FIFO_STALL 0x0002 917 918 struct hammer2_xop_head { 919 hammer2_xop_desc_t *desc; 920 hammer2_tid_t mtid; 921 struct hammer2_inode *ip1; 922 struct hammer2_inode *ip2; 923 struct hammer2_inode *ip3; 924 uint64_t run_mask; 925 uint64_t chk_mask; 926 int flags; 927 int state; 928 int error; 929 hammer2_key_t collect_key; 930 char *name1; 931 size_t name1_len; 932 char *name2; 933 size_t name2_len; 934 hammer2_xop_fifo_t collect[HAMMER2_MAXCLUSTER]; 935 hammer2_cluster_t cluster; /* help collections */ 936 hammer2_io_t *focus_dio; 937 }; 938 939 typedef struct hammer2_xop_head hammer2_xop_head_t; 940 941 struct hammer2_xop_ipcluster { 942 hammer2_xop_head_t head; 943 }; 944 945 struct hammer2_xop_strategy { 946 hammer2_xop_head_t head; 947 hammer2_key_t lbase; 948 int finished; 949 hammer2_mtx_t lock; 950 struct bio *bio; 951 }; 952 953 struct hammer2_xop_readdir { 954 hammer2_xop_head_t head; 955 hammer2_key_t lkey; 956 }; 957 958 struct hammer2_xop_nresolve { 959 hammer2_xop_head_t head; 960 hammer2_key_t lhc; /* if name is NULL used lhc */ 961 }; 962 963 struct hammer2_xop_unlink { 964 hammer2_xop_head_t head; 965 int isdir; 966 int dopermanent; 967 }; 968 969 #define H2DOPERM_PERMANENT 0x01 970 #define H2DOPERM_FORCE 0x02 971 #define H2DOPERM_IGNINO 0x04 972 973 struct hammer2_xop_nrename { 974 hammer2_xop_head_t head; 975 hammer2_tid_t lhc; 976 int ip_key; 977 }; 978 979 struct hammer2_xop_scanlhc { 980 hammer2_xop_head_t head; 981 hammer2_key_t lhc; 982 }; 983 984 struct hammer2_xop_scanall { 985 hammer2_xop_head_t head; 986 hammer2_key_t key_beg; /* inclusive */ 987 hammer2_key_t key_end; /* inclusive */ 988 int resolve_flags; 989 int lookup_flags; 990 }; 991 992 struct hammer2_xop_lookup { 993 hammer2_xop_head_t head; 994 hammer2_key_t lhc; 995 }; 996 997 struct hammer2_xop_mkdirent { 998 hammer2_xop_head_t head; 999 hammer2_dirent_head_t dirent; 1000 hammer2_key_t lhc; 1001 }; 1002 1003 struct hammer2_xop_create { 1004 hammer2_xop_head_t head; 1005 hammer2_inode_meta_t meta; /* initial metadata */ 1006 hammer2_key_t lhc; 1007 int flags; 1008 }; 1009 1010 struct hammer2_xop_destroy { 1011 hammer2_xop_head_t head; 1012 }; 1013 1014 struct hammer2_xop_fsync { 1015 hammer2_xop_head_t head; 1016 hammer2_inode_meta_t meta; 1017 hammer2_off_t osize; 1018 u_int ipflags; 1019 int clear_directdata; 1020 }; 1021 1022 struct hammer2_xop_unlinkall { 1023 hammer2_xop_head_t head; 1024 hammer2_key_t key_beg; 1025 hammer2_key_t key_end; 1026 }; 1027 1028 struct hammer2_xop_connect { 1029 hammer2_xop_head_t head; 1030 hammer2_key_t lhc; 1031 }; 1032 1033 struct hammer2_xop_flush { 1034 hammer2_xop_head_t head; 1035 }; 1036 1037 typedef struct hammer2_xop_readdir hammer2_xop_readdir_t; 1038 typedef struct hammer2_xop_nresolve hammer2_xop_nresolve_t; 1039 typedef struct hammer2_xop_unlink hammer2_xop_unlink_t; 1040 typedef struct hammer2_xop_nrename hammer2_xop_nrename_t; 1041 typedef struct hammer2_xop_ipcluster hammer2_xop_ipcluster_t; 1042 typedef struct hammer2_xop_strategy hammer2_xop_strategy_t; 1043 typedef struct hammer2_xop_mkdirent hammer2_xop_mkdirent_t; 1044 typedef struct hammer2_xop_create hammer2_xop_create_t; 1045 typedef struct hammer2_xop_destroy hammer2_xop_destroy_t; 1046 typedef struct hammer2_xop_fsync hammer2_xop_fsync_t; 1047 typedef struct hammer2_xop_unlinkall hammer2_xop_unlinkall_t; 1048 typedef struct hammer2_xop_scanlhc hammer2_xop_scanlhc_t; 1049 typedef struct hammer2_xop_scanall hammer2_xop_scanall_t; 1050 typedef struct hammer2_xop_lookup hammer2_xop_lookup_t; 1051 typedef struct hammer2_xop_connect hammer2_xop_connect_t; 1052 typedef struct hammer2_xop_flush hammer2_xop_flush_t; 1053 1054 union hammer2_xop { 1055 hammer2_xop_head_t head; 1056 hammer2_xop_ipcluster_t xop_ipcluster; 1057 hammer2_xop_readdir_t xop_readdir; 1058 hammer2_xop_nresolve_t xop_nresolve; 1059 hammer2_xop_unlink_t xop_unlink; 1060 hammer2_xop_nrename_t xop_nrename; 1061 hammer2_xop_strategy_t xop_strategy; 1062 hammer2_xop_mkdirent_t xop_mkdirent; 1063 hammer2_xop_create_t xop_create; 1064 hammer2_xop_destroy_t xop_destroy; 1065 hammer2_xop_fsync_t xop_fsync; 1066 hammer2_xop_unlinkall_t xop_unlinkall; 1067 hammer2_xop_scanlhc_t xop_scanlhc; 1068 hammer2_xop_scanall_t xop_scanall; 1069 hammer2_xop_lookup_t xop_lookup; 1070 hammer2_xop_flush_t xop_flush; 1071 hammer2_xop_connect_t xop_connect; 1072 }; 1073 1074 typedef union hammer2_xop hammer2_xop_t; 1075 1076 /* 1077 * hammer2_xop_group - Manage XOP support threads. 1078 */ 1079 struct hammer2_xop_group { 1080 hammer2_thread_t thrs[HAMMER2_MAXCLUSTER]; 1081 }; 1082 1083 typedef struct hammer2_xop_group hammer2_xop_group_t; 1084 1085 /* 1086 * flags to hammer2_xop_collect() 1087 */ 1088 #define HAMMER2_XOP_COLLECT_NOWAIT 0x00000001 1089 #define HAMMER2_XOP_COLLECT_WAITALL 0x00000002 1090 1091 /* 1092 * flags to hammer2_xop_alloc() 1093 * 1094 * MODIFYING - This is a modifying transaction, allocate a mtid. 1095 * RECURSE - Recurse top-level inode (for root flushes) 1096 */ 1097 #define HAMMER2_XOP_MODIFYING 0x00000001 1098 #define HAMMER2_XOP_STRATEGY 0x00000002 1099 #define HAMMER2_XOP_INODE_STOP 0x00000004 1100 #define HAMMER2_XOP_VOLHDR 0x00000008 1101 #define HAMMER2_XOP_FSSYNC 0x00000010 1102 #define HAMMER2_XOP_IROOT 0x00000020 1103 1104 /* 1105 * Global (per partition) management structure, represents a hard block 1106 * device. Typically referenced by hammer2_chain structures when applicable. 1107 * Typically not used for network-managed elements. 1108 * 1109 * Note that a single hammer2_dev can be indirectly tied to multiple system 1110 * mount points. There is no direct relationship. System mounts are 1111 * per-cluster-id, not per-block-device, and a single hard mount might contain 1112 * many PFSs and those PFSs might combine together in various ways to form 1113 * the set of available clusters. 1114 */ 1115 struct hammer2_dev { 1116 struct vnode *devvp; /* device vnode */ 1117 int ronly; /* read-only mount */ 1118 int mount_count; /* number of actively mounted PFSs */ 1119 TAILQ_ENTRY(hammer2_dev) mntentry; /* hammer2_mntlist */ 1120 1121 struct malloc_type *mchain; 1122 int nipstacks; 1123 int maxipstacks; 1124 kdmsg_iocom_t iocom; /* volume-level dmsg interface */ 1125 hammer2_spin_t io_spin; /* iotree, iolruq access */ 1126 struct hammer2_io_tree iotree; 1127 int iofree_count; 1128 int freemap_relaxed; 1129 hammer2_chain_t vchain; /* anchor chain (topology) */ 1130 hammer2_chain_t fchain; /* anchor chain (freemap) */ 1131 hammer2_spin_t list_spin; 1132 struct hammer2_pfs *spmp; /* super-root pmp for transactions */ 1133 struct lock vollk; /* lockmgr lock */ 1134 struct lock bulklk; /* bulkfree operation lock */ 1135 struct lock bflock; /* bulk-free manual function lock */ 1136 hammer2_off_t heur_freemap[HAMMER2_FREEMAP_HEUR_SIZE]; 1137 hammer2_dedup_t heur_dedup[HAMMER2_DEDUP_HEUR_SIZE]; 1138 int volhdrno; /* last volhdrno written */ 1139 uint32_t hflags; /* HMNT2 flags applicable to device */ 1140 hammer2_off_t free_reserved; /* nominal free reserved */ 1141 hammer2_thread_t bfthr; /* bulk-free thread */ 1142 char devrepname[64]; /* for kprintf */ 1143 hammer2_ioc_bulkfree_t bflast; /* stats for last bulkfree run */ 1144 hammer2_volume_data_t voldata; 1145 hammer2_volume_data_t volsync; /* synchronized voldata */ 1146 }; 1147 1148 typedef struct hammer2_dev hammer2_dev_t; 1149 1150 /* 1151 * Helper functions (cluster must be locked for flags to be valid). 1152 */ 1153 static __inline 1154 int 1155 hammer2_chain_rdok(hammer2_chain_t *chain) 1156 { 1157 return (chain->error == 0); 1158 } 1159 1160 static __inline 1161 int 1162 hammer2_chain_wrok(hammer2_chain_t *chain) 1163 { 1164 return (chain->error == 0 && chain->hmp->ronly == 0); 1165 } 1166 1167 /* 1168 * Per-cluster management structure. This structure will be tied to a 1169 * system mount point if the system is mounting the PFS, but is also used 1170 * to manage clusters encountered during the super-root scan or received 1171 * via LNK_SPANs that might not be mounted. 1172 * 1173 * This structure is also used to represent the super-root that hangs off 1174 * of a hard mount point. The super-root is not really a cluster element. 1175 * In this case the spmp_hmp field will be non-NULL. It's just easier to do 1176 * this than to special case super-root manipulation in the hammer2_chain* 1177 * code as being only hammer2_dev-related. 1178 * 1179 * pfs_mode and pfs_nmasters are rollup fields which critically describes 1180 * how elements of the cluster act on the cluster. pfs_mode is only applicable 1181 * when a PFS is mounted by the system. pfs_nmasters is our best guess as to 1182 * how many masters have been configured for a cluster and is always 1183 * applicable. pfs_types[] is an array with 1:1 correspondance to the 1184 * iroot cluster and describes the PFS types of the nodes making up the 1185 * cluster. 1186 * 1187 * WARNING! Portions of this structure have deferred initialization. In 1188 * particular, if not mounted there will be no wthread. 1189 * umounted network PFSs will also be missing iroot and numerous 1190 * other fields will not be initialized prior to mount. 1191 * 1192 * Synchronization threads are chain-specific and only applicable 1193 * to local hard PFS entries. A hammer2_pfs structure may contain 1194 * more than one when multiple hard PFSs are present on the local 1195 * machine which require synchronization monitoring. Most PFSs 1196 * (such as snapshots) are 1xMASTER PFSs which do not need a 1197 * synchronization thread. 1198 * 1199 * WARNING! The chains making up pfs->iroot's cluster are accounted for in 1200 * hammer2_dev->mount_count when the pfs is associated with a mount 1201 * point. 1202 */ 1203 struct hammer2_pfs { 1204 struct mount *mp; 1205 TAILQ_ENTRY(hammer2_pfs) mntentry; /* hammer2_pfslist */ 1206 uuid_t pfs_clid; 1207 hammer2_dev_t *spmp_hmp; /* only if super-root pmp */ 1208 hammer2_dev_t *force_local; /* only if 'local' mount */ 1209 hammer2_inode_t *iroot; /* PFS root inode */ 1210 uint8_t pfs_types[HAMMER2_MAXCLUSTER]; 1211 char *pfs_names[HAMMER2_MAXCLUSTER]; 1212 hammer2_dev_t *pfs_hmps[HAMMER2_MAXCLUSTER]; 1213 hammer2_blockset_t pfs_iroot_blocksets[HAMMER2_MAXCLUSTER]; 1214 hammer2_trans_t trans; 1215 struct lock lock; /* PFS lock for certain ops */ 1216 struct lock lock_nlink; /* rename and nlink lock */ 1217 struct netexport export; /* nfs export */ 1218 int unused00; 1219 int ronly; /* read-only mount */ 1220 int hflags; /* pfs-specific mount flags */ 1221 struct malloc_type *minode; 1222 struct malloc_type *mmsg; 1223 hammer2_spin_t inum_spin; /* inumber lookup */ 1224 struct hammer2_inode_tree inum_tree; /* (not applicable to spmp) */ 1225 long inum_count; /* #of inodes in inum_tree */ 1226 hammer2_spin_t lru_spin; /* inumber lookup */ 1227 struct hammer2_chain_list lru_list; /* basis for LRU tests */ 1228 int lru_count; /* #of chains on LRU */ 1229 int flags; 1230 hammer2_tid_t modify_tid; /* modify transaction id */ 1231 hammer2_tid_t inode_tid; /* inode allocator */ 1232 uint8_t pfs_nmasters; /* total masters */ 1233 uint8_t pfs_mode; /* operating mode PFSMODE */ 1234 uint8_t unused01; 1235 uint8_t unused02; 1236 int free_ticks; /* free_* calculations */ 1237 long inmem_inodes; 1238 hammer2_off_t free_reserved; 1239 hammer2_off_t free_nominal; 1240 uint32_t inmem_dirty_chains; 1241 int count_lwinprog; /* logical write in prog */ 1242 hammer2_spin_t list_spin; 1243 struct inoq_head syncq; /* SYNCQ flagged inodes */ 1244 struct depq_head depq; /* SIDEQ flagged inodes */ 1245 long sideq_count; /* total inodes on depq */ 1246 hammer2_thread_t sync_thrs[HAMMER2_MAXCLUSTER]; 1247 uint32_t cluster_flags; /* cached cluster flags */ 1248 int has_xop_threads; 1249 hammer2_spin_t xop_spin; /* xop sequencer */ 1250 hammer2_xop_group_t *xop_groups; 1251 }; 1252 1253 typedef struct hammer2_pfs hammer2_pfs_t; 1254 1255 TAILQ_HEAD(hammer2_pfslist, hammer2_pfs); 1256 1257 /* 1258 * pmp->flags 1259 */ 1260 #define HAMMER2_PMPF_SPMP 0x00000001 1261 #define HAMMER2_PMPF_EMERG 0x00000002 /* Emergency delete mode */ 1262 1263 /* 1264 * NOTE: The LRU list contains at least all the chains with refs == 0 1265 * that can be recycled, and may contain additional chains which 1266 * cannot. 1267 */ 1268 #define HAMMER2_LRU_LIMIT 4096 1269 1270 #define HAMMER2_DIRTYCHAIN_WAITING 0x80000000 1271 #define HAMMER2_DIRTYCHAIN_MASK 0x7FFFFFFF 1272 1273 #define HAMMER2_LWINPROG_WAITING 0x80000000 1274 #define HAMMER2_LWINPROG_WAITING0 0x40000000 1275 #define HAMMER2_LWINPROG_MASK 0x3FFFFFFF 1276 1277 /* 1278 * hammer2_cluster_check 1279 */ 1280 #define HAMMER2_CHECK_NULL 0x00000001 1281 1282 /* 1283 * Misc 1284 */ 1285 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 1286 #define VTOI(vp) ((hammer2_inode_t *)(vp)->v_data) 1287 #endif 1288 1289 #if defined(_KERNEL) 1290 1291 #ifdef MALLOC_DECLARE 1292 MALLOC_DECLARE(M_HAMMER2); 1293 #endif 1294 1295 static __inline 1296 hammer2_pfs_t * 1297 MPTOPMP(struct mount *mp) 1298 { 1299 return ((hammer2_pfs_t *)mp->mnt_data); 1300 } 1301 1302 #define HAMMER2_DEDUP_FRAG (HAMMER2_PBUFSIZE / 64) 1303 #define HAMMER2_DEDUP_FRAGRADIX (HAMMER2_PBUFRADIX - 6) 1304 1305 static __inline 1306 uint64_t 1307 hammer2_dedup_mask(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes) 1308 { 1309 int bbeg; 1310 int bits; 1311 uint64_t mask; 1312 1313 bbeg = (int)((data_off & ~HAMMER2_OFF_MASK_RADIX) - dio->pbase) >> 1314 HAMMER2_DEDUP_FRAGRADIX; 1315 bits = (int)((bytes + (HAMMER2_DEDUP_FRAG - 1)) >> 1316 HAMMER2_DEDUP_FRAGRADIX); 1317 mask = ((uint64_t)1 << bbeg) - 1; 1318 if (bbeg + bits == 64) 1319 mask = (uint64_t)-1; 1320 else 1321 mask = ((uint64_t)1 << (bbeg + bits)) - 1; 1322 1323 mask &= ~(((uint64_t)1 << bbeg) - 1); 1324 1325 return mask; 1326 } 1327 1328 static __inline 1329 int 1330 hammer2_error_to_errno(int error) 1331 { 1332 if (error) { 1333 if (error & HAMMER2_ERROR_EIO) 1334 error = EIO; 1335 else if (error & HAMMER2_ERROR_CHECK) 1336 error = EDOM; 1337 else if (error & HAMMER2_ERROR_ABORTED) 1338 error = EINTR; 1339 else if (error & HAMMER2_ERROR_BADBREF) 1340 error = EIO; 1341 else if (error & HAMMER2_ERROR_ENOSPC) 1342 error = ENOSPC; 1343 else if (error & HAMMER2_ERROR_ENOENT) 1344 error = ENOENT; 1345 else if (error & HAMMER2_ERROR_ENOTEMPTY) 1346 error = ENOTEMPTY; 1347 else if (error & HAMMER2_ERROR_EAGAIN) 1348 error = EAGAIN; 1349 else if (error & HAMMER2_ERROR_ENOTDIR) 1350 error = ENOTDIR; 1351 else if (error & HAMMER2_ERROR_EISDIR) 1352 error = EISDIR; 1353 else if (error & HAMMER2_ERROR_EINPROGRESS) 1354 error = EINPROGRESS; 1355 else if (error & HAMMER2_ERROR_EEXIST) 1356 error = EEXIST; 1357 else if (error & HAMMER2_ERROR_EINVAL) 1358 error = EINVAL; 1359 else if (error & HAMMER2_ERROR_EDEADLK) 1360 error = EDEADLK; 1361 else if (error & HAMMER2_ERROR_ESRCH) 1362 error = ESRCH; 1363 else if (error & HAMMER2_ERROR_ETIMEDOUT) 1364 error = ETIMEDOUT; 1365 else 1366 error = EDOM; 1367 } 1368 return error; 1369 } 1370 1371 static __inline 1372 int 1373 hammer2_errno_to_error(int error) 1374 { 1375 switch(error) { 1376 case 0: 1377 return 0; 1378 case EIO: 1379 return HAMMER2_ERROR_EIO; 1380 case EDOM: 1381 return HAMMER2_ERROR_CHECK; 1382 case EINTR: 1383 return HAMMER2_ERROR_ABORTED; 1384 //case EIO: 1385 // return HAMMER2_ERROR_BADBREF; 1386 case ENOSPC: 1387 return HAMMER2_ERROR_ENOSPC; 1388 case ENOENT: 1389 return HAMMER2_ERROR_ENOENT; 1390 case ENOTEMPTY: 1391 return HAMMER2_ERROR_ENOTEMPTY; 1392 case EAGAIN: 1393 return HAMMER2_ERROR_EAGAIN; 1394 case ENOTDIR: 1395 return HAMMER2_ERROR_ENOTDIR; 1396 case EISDIR: 1397 return HAMMER2_ERROR_EISDIR; 1398 case EINPROGRESS: 1399 return HAMMER2_ERROR_EINPROGRESS; 1400 case EEXIST: 1401 return HAMMER2_ERROR_EEXIST; 1402 case EINVAL: 1403 return HAMMER2_ERROR_EINVAL; 1404 case EDEADLK: 1405 return HAMMER2_ERROR_EDEADLK; 1406 case ESRCH: 1407 return HAMMER2_ERROR_ESRCH; 1408 case ETIMEDOUT: 1409 return HAMMER2_ERROR_ETIMEDOUT; 1410 default: 1411 return HAMMER2_ERROR_EINVAL; 1412 } 1413 } 1414 1415 1416 extern struct vop_ops hammer2_vnode_vops; 1417 extern struct vop_ops hammer2_spec_vops; 1418 extern struct vop_ops hammer2_fifo_vops; 1419 extern struct hammer2_pfslist hammer2_pfslist; 1420 extern struct lock hammer2_mntlk; 1421 1422 1423 extern int hammer2_debug; 1424 extern int hammer2_xopgroups; 1425 extern long hammer2_debug_inode; 1426 extern int hammer2_cluster_meta_read; 1427 extern int hammer2_cluster_data_read; 1428 extern int hammer2_cluster_write; 1429 extern int hammer2_dedup_enable; 1430 extern int hammer2_always_compress; 1431 extern int hammer2_flush_pipe; 1432 extern int hammer2_dio_count; 1433 extern int hammer2_dio_limit; 1434 extern int hammer2_bulkfree_tps; 1435 extern int hammer2_worker_rmask; 1436 extern long hammer2_chain_allocs; 1437 extern long hammer2_limit_dirty_chains; 1438 extern long hammer2_limit_dirty_inodes; 1439 extern long hammer2_count_modified_chains; 1440 extern long hammer2_iod_file_read; 1441 extern long hammer2_iod_meta_read; 1442 extern long hammer2_iod_indr_read; 1443 extern long hammer2_iod_fmap_read; 1444 extern long hammer2_iod_volu_read; 1445 extern long hammer2_iod_file_write; 1446 extern long hammer2_iod_file_wembed; 1447 extern long hammer2_iod_file_wzero; 1448 extern long hammer2_iod_file_wdedup; 1449 extern long hammer2_iod_meta_write; 1450 extern long hammer2_iod_indr_write; 1451 extern long hammer2_iod_fmap_write; 1452 extern long hammer2_iod_volu_write; 1453 1454 extern long hammer2_process_icrc32; 1455 extern long hammer2_process_xxhash64; 1456 1457 extern struct objcache *cache_buffer_read; 1458 extern struct objcache *cache_buffer_write; 1459 extern struct objcache *cache_xops; 1460 1461 /* 1462 * hammer2_subr.c 1463 */ 1464 #define hammer2_icrc32(buf, size) iscsi_crc32((buf), (size)) 1465 #define hammer2_icrc32c(buf, size, crc) iscsi_crc32_ext((buf), (size), (crc)) 1466 1467 int hammer2_signal_check(time_t *timep); 1468 const char *hammer2_error_str(int error); 1469 const char *hammer2_bref_type_str(int btype); 1470 1471 void hammer2_dev_exlock(hammer2_dev_t *hmp); 1472 void hammer2_dev_shlock(hammer2_dev_t *hmp); 1473 void hammer2_dev_unlock(hammer2_dev_t *hmp); 1474 1475 int hammer2_get_dtype(uint8_t type); 1476 int hammer2_get_vtype(uint8_t type); 1477 uint8_t hammer2_get_obj_type(enum vtype vtype); 1478 void hammer2_time_to_timespec(uint64_t xtime, struct timespec *ts); 1479 uint64_t hammer2_timespec_to_time(const struct timespec *ts); 1480 uint32_t hammer2_to_unix_xid(const uuid_t *uuid); 1481 void hammer2_guid_to_uuid(uuid_t *uuid, uint32_t guid); 1482 1483 hammer2_key_t hammer2_dirhash(const unsigned char *name, size_t len); 1484 int hammer2_getradix(size_t bytes); 1485 1486 int hammer2_calc_logical(hammer2_inode_t *ip, hammer2_off_t uoff, 1487 hammer2_key_t *lbasep, hammer2_key_t *leofp); 1488 int hammer2_calc_physical(hammer2_inode_t *ip, hammer2_key_t lbase); 1489 void hammer2_update_time(uint64_t *timep); 1490 void hammer2_adjreadcounter(int btype, size_t bytes); 1491 void hammer2_adjwritecounter(int btype, size_t bytes); 1492 1493 /* 1494 * hammer2_inode.c 1495 */ 1496 struct vnode *hammer2_igetv(hammer2_inode_t *ip, int *errorp); 1497 hammer2_inode_t *hammer2_inode_lookup(hammer2_pfs_t *pmp, 1498 hammer2_tid_t inum); 1499 hammer2_inode_t *hammer2_inode_get(hammer2_pfs_t *pmp, 1500 hammer2_xop_head_t *xop, hammer2_tid_t inum, int idx); 1501 void hammer2_inode_ref(hammer2_inode_t *ip); 1502 void hammer2_inode_drop(hammer2_inode_t *ip); 1503 void hammer2_inode_repoint(hammer2_inode_t *ip, hammer2_cluster_t *cluster); 1504 void hammer2_inode_repoint_one(hammer2_inode_t *ip, hammer2_cluster_t *cluster, 1505 int idx); 1506 hammer2_key_t hammer2_inode_data_count(const hammer2_inode_t *ip); 1507 hammer2_key_t hammer2_inode_inode_count(const hammer2_inode_t *ip); 1508 void hammer2_inode_modify(hammer2_inode_t *ip); 1509 void hammer2_inode_delayed_sideq(hammer2_inode_t *ip); 1510 void hammer2_inode_lock(hammer2_inode_t *ip, int how); 1511 void hammer2_inode_lock4(hammer2_inode_t *ip1, hammer2_inode_t *ip2, 1512 hammer2_inode_t *ip3, hammer2_inode_t *ip4); 1513 void hammer2_inode_unlock(hammer2_inode_t *ip); 1514 void hammer2_inode_depend(hammer2_inode_t *ip1, hammer2_inode_t *ip2); 1515 hammer2_chain_t *hammer2_inode_chain(hammer2_inode_t *ip, int clindex, int how); 1516 hammer2_chain_t *hammer2_inode_chain_and_parent(hammer2_inode_t *ip, 1517 int clindex, hammer2_chain_t **parentp, int how); 1518 hammer2_mtx_state_t hammer2_inode_lock_temp_release(hammer2_inode_t *ip); 1519 void hammer2_inode_lock_temp_restore(hammer2_inode_t *ip, 1520 hammer2_mtx_state_t ostate); 1521 int hammer2_inode_lock_upgrade(hammer2_inode_t *ip); 1522 void hammer2_inode_lock_downgrade(hammer2_inode_t *ip, int); 1523 1524 hammer2_inode_t *hammer2_inode_create_normal(hammer2_inode_t *pip, 1525 struct vattr *vap, struct ucred *cred, 1526 hammer2_key_t inum, int *errorp); 1527 hammer2_inode_t *hammer2_inode_create_pfs(hammer2_pfs_t *spmp, 1528 const uint8_t *name, size_t name_len, 1529 int *errorp); 1530 int hammer2_inode_chain_ins(hammer2_inode_t *ip); 1531 int hammer2_inode_chain_des(hammer2_inode_t *ip); 1532 int hammer2_inode_chain_sync(hammer2_inode_t *ip); 1533 int hammer2_inode_chain_flush(hammer2_inode_t *ip, int flags); 1534 int hammer2_inode_unlink_finisher(hammer2_inode_t *ip, int isopen); 1535 int hammer2_dirent_create(hammer2_inode_t *dip, const char *name, 1536 size_t name_len, hammer2_key_t inum, uint8_t type); 1537 1538 /* 1539 * hammer2_chain.c 1540 */ 1541 void hammer2_voldata_lock(hammer2_dev_t *hmp); 1542 void hammer2_voldata_unlock(hammer2_dev_t *hmp); 1543 void hammer2_voldata_modify(hammer2_dev_t *hmp); 1544 hammer2_chain_t *hammer2_chain_alloc(hammer2_dev_t *hmp, 1545 hammer2_pfs_t *pmp, 1546 hammer2_blockref_t *bref); 1547 void hammer2_chain_core_init(hammer2_chain_t *chain); 1548 void hammer2_chain_ref(hammer2_chain_t *chain); 1549 void hammer2_chain_ref_hold(hammer2_chain_t *chain); 1550 void hammer2_chain_drop(hammer2_chain_t *chain); 1551 void hammer2_chain_drop_unhold(hammer2_chain_t *chain); 1552 void hammer2_chain_unhold(hammer2_chain_t *chain); 1553 void hammer2_chain_rehold(hammer2_chain_t *chain); 1554 int hammer2_chain_lock(hammer2_chain_t *chain, int how); 1555 void hammer2_chain_lock_unhold(hammer2_chain_t *chain, int how); 1556 void hammer2_chain_load_data(hammer2_chain_t *chain); 1557 const hammer2_media_data_t *hammer2_chain_rdata(hammer2_chain_t *chain); 1558 hammer2_media_data_t *hammer2_chain_wdata(hammer2_chain_t *chain); 1559 1560 int hammer2_chain_inode_find(hammer2_pfs_t *pmp, hammer2_key_t inum, 1561 int clindex, int flags, 1562 hammer2_chain_t **parentp, 1563 hammer2_chain_t **chainp); 1564 int hammer2_chain_modify(hammer2_chain_t *chain, hammer2_tid_t mtid, 1565 hammer2_off_t dedup_off, int flags); 1566 int hammer2_chain_modify_ip(hammer2_inode_t *ip, hammer2_chain_t *chain, 1567 hammer2_tid_t mtid, int flags); 1568 int hammer2_chain_resize(hammer2_chain_t *chain, 1569 hammer2_tid_t mtid, hammer2_off_t dedup_off, 1570 int nradix, int flags); 1571 void hammer2_chain_unlock(hammer2_chain_t *chain); 1572 void hammer2_chain_unlock_hold(hammer2_chain_t *chain); 1573 void hammer2_chain_wait(hammer2_chain_t *chain); 1574 hammer2_chain_t *hammer2_chain_get(hammer2_chain_t *parent, int generation, 1575 hammer2_blockref_t *bref, int how); 1576 hammer2_chain_t *hammer2_chain_lookup_init(hammer2_chain_t *parent, int flags); 1577 void hammer2_chain_lookup_done(hammer2_chain_t *parent); 1578 hammer2_chain_t *hammer2_chain_getparent(hammer2_chain_t *chain, int flags); 1579 hammer2_chain_t *hammer2_chain_repparent(hammer2_chain_t **chainp, int flags); 1580 hammer2_chain_t *hammer2_chain_lookup(hammer2_chain_t **parentp, 1581 hammer2_key_t *key_nextp, 1582 hammer2_key_t key_beg, hammer2_key_t key_end, 1583 int *errorp, int flags); 1584 hammer2_chain_t *hammer2_chain_next(hammer2_chain_t **parentp, 1585 hammer2_chain_t *chain, 1586 hammer2_key_t *key_nextp, 1587 hammer2_key_t key_beg, hammer2_key_t key_end, 1588 int *errorp, int flags); 1589 int hammer2_chain_scan(hammer2_chain_t *parent, 1590 hammer2_chain_t **chainp, 1591 hammer2_blockref_t *bref, 1592 int *firstp, int flags); 1593 1594 int hammer2_chain_create(hammer2_chain_t **parentp, hammer2_chain_t **chainp, 1595 hammer2_dev_t *hmp, hammer2_pfs_t *pmp, 1596 int methods, hammer2_key_t key, int keybits, 1597 int type, size_t bytes, hammer2_tid_t mtid, 1598 hammer2_off_t dedup_off, int flags); 1599 void hammer2_chain_rename(hammer2_chain_t **parentp, 1600 hammer2_chain_t *chain, 1601 hammer2_tid_t mtid, int flags); 1602 int hammer2_chain_delete(hammer2_chain_t *parent, hammer2_chain_t *chain, 1603 hammer2_tid_t mtid, int flags); 1604 int hammer2_chain_indirect_maintenance(hammer2_chain_t *parent, 1605 hammer2_chain_t *chain); 1606 void hammer2_chain_setflush(hammer2_chain_t *chain); 1607 void hammer2_chain_countbrefs(hammer2_chain_t *chain, 1608 hammer2_blockref_t *base, int count); 1609 hammer2_chain_t *hammer2_chain_bulksnap(hammer2_dev_t *hmp); 1610 void hammer2_chain_bulkdrop(hammer2_chain_t *copy); 1611 1612 void hammer2_chain_setcheck(hammer2_chain_t *chain, void *bdata); 1613 int hammer2_chain_testcheck(hammer2_chain_t *chain, void *bdata); 1614 int hammer2_chain_dirent_test(hammer2_chain_t *chain, const char *name, 1615 size_t name_len); 1616 1617 void hammer2_base_delete(hammer2_chain_t *parent, 1618 hammer2_blockref_t *base, int count, 1619 hammer2_chain_t *chain, 1620 hammer2_blockref_t *obref); 1621 void hammer2_base_insert(hammer2_chain_t *parent, 1622 hammer2_blockref_t *base, int count, 1623 hammer2_chain_t *chain, 1624 hammer2_blockref_t *elm); 1625 1626 /* 1627 * hammer2_flush.c 1628 */ 1629 void hammer2_trans_manage_init(hammer2_pfs_t *pmp); 1630 int hammer2_flush(hammer2_chain_t *chain, int istop); 1631 void hammer2_trans_init(hammer2_pfs_t *pmp, uint32_t flags); 1632 void hammer2_trans_setflags(hammer2_pfs_t *pmp, uint32_t flags); 1633 void hammer2_trans_clearflags(hammer2_pfs_t *pmp, uint32_t flags); 1634 hammer2_tid_t hammer2_trans_sub(hammer2_pfs_t *pmp); 1635 void hammer2_trans_done(hammer2_pfs_t *pmp, uint32_t flags); 1636 hammer2_tid_t hammer2_trans_newinum(hammer2_pfs_t *pmp); 1637 void hammer2_trans_assert_strategy(hammer2_pfs_t *pmp); 1638 1639 /* 1640 * hammer2_ioctl.c 1641 */ 1642 int hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, 1643 int fflag, struct ucred *cred); 1644 1645 /* 1646 * hammer2_io.c 1647 */ 1648 void hammer2_io_inval(hammer2_io_t *dio, hammer2_off_t data_off, u_int bytes); 1649 void hammer2_io_cleanup(hammer2_dev_t *hmp, struct hammer2_io_tree *tree); 1650 char *hammer2_io_data(hammer2_io_t *dio, off_t lbase); 1651 void hammer2_io_bkvasync(hammer2_io_t *dio); 1652 void hammer2_io_dedup_set(hammer2_dev_t *hmp, hammer2_blockref_t *bref); 1653 void hammer2_io_dedup_delete(hammer2_dev_t *hmp, uint8_t btype, 1654 hammer2_off_t data_off, u_int bytes); 1655 void hammer2_io_dedup_assert(hammer2_dev_t *hmp, hammer2_off_t data_off, 1656 u_int bytes); 1657 int hammer2_io_new(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1658 hammer2_io_t **diop); 1659 int hammer2_io_newnz(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1660 hammer2_io_t **diop); 1661 int _hammer2_io_bread(hammer2_dev_t *hmp, int btype, off_t lbase, int lsize, 1662 hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1663 void hammer2_io_setdirty(hammer2_io_t *dio); 1664 1665 hammer2_io_t *_hammer2_io_getblk(hammer2_dev_t *hmp, int btype, off_t lbase, 1666 int lsize, int op HAMMER2_IO_DEBUG_ARGS); 1667 hammer2_io_t *_hammer2_io_getquick(hammer2_dev_t *hmp, off_t lbase, 1668 int lsize HAMMER2_IO_DEBUG_ARGS); 1669 void _hammer2_io_putblk(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1670 int _hammer2_io_bwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1671 void _hammer2_io_bawrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1672 void _hammer2_io_bdwrite(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1673 void _hammer2_io_brelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1674 void _hammer2_io_bqrelse(hammer2_io_t **diop HAMMER2_IO_DEBUG_ARGS); 1675 void _hammer2_io_ref(hammer2_io_t *dio HAMMER2_IO_DEBUG_ARGS); 1676 1677 #ifndef HAMMER2_IO_DEBUG 1678 1679 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1680 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op)) 1681 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1682 _hammer2_io_getquick((hmp), (lbase), (lsize)) 1683 #define hammer2_io_putblk(diop) \ 1684 _hammer2_io_putblk(diop) 1685 #define hammer2_io_bwrite(diop) \ 1686 _hammer2_io_bwrite((diop)) 1687 #define hammer2_io_bawrite(diop) \ 1688 _hammer2_io_bawrite((diop)) 1689 #define hammer2_io_bdwrite(diop) \ 1690 _hammer2_io_bdwrite((diop)) 1691 #define hammer2_io_brelse(diop) \ 1692 _hammer2_io_brelse((diop)) 1693 #define hammer2_io_bqrelse(diop) \ 1694 _hammer2_io_bqrelse((diop)) 1695 #define hammer2_io_ref(dio) \ 1696 _hammer2_io_ref((dio)) 1697 1698 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1699 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop)) 1700 1701 #else 1702 1703 #define hammer2_io_getblk(hmp, btype, lbase, lsize, op) \ 1704 _hammer2_io_getblk((hmp), (btype), (lbase), (lsize), (op), \ 1705 __FILE__, __LINE__) 1706 1707 #define hammer2_io_getquick(hmp, lbase, lsize) \ 1708 _hammer2_io_getquick((hmp), (lbase), (lsize), __FILE__, __LINE__) 1709 1710 #define hammer2_io_putblk(diop) \ 1711 _hammer2_io_putblk(diop, __FILE__, __LINE__) 1712 1713 #define hammer2_io_bwrite(diop) \ 1714 _hammer2_io_bwrite((diop), __FILE__, __LINE__) 1715 #define hammer2_io_bawrite(diop) \ 1716 _hammer2_io_bawrite((diop), __FILE__, __LINE__) 1717 #define hammer2_io_bdwrite(diop) \ 1718 _hammer2_io_bdwrite((diop), __FILE__, __LINE__) 1719 #define hammer2_io_brelse(diop) \ 1720 _hammer2_io_brelse((diop), __FILE__, __LINE__) 1721 #define hammer2_io_bqrelse(diop) \ 1722 _hammer2_io_bqrelse((diop), __FILE__, __LINE__) 1723 #define hammer2_io_ref(dio) \ 1724 _hammer2_io_ref((dio), __FILE__, __LINE__) 1725 1726 #define hammer2_io_bread(hmp, btype, lbase, lsize, diop) \ 1727 _hammer2_io_bread((hmp), (btype), (lbase), (lsize), (diop), \ 1728 __FILE__, __LINE__) 1729 1730 #endif 1731 1732 /* 1733 * hammer2_admin.c 1734 */ 1735 void hammer2_thr_signal(hammer2_thread_t *thr, uint32_t flags); 1736 void hammer2_thr_signal2(hammer2_thread_t *thr, 1737 uint32_t pflags, uint32_t nflags); 1738 void hammer2_thr_wait(hammer2_thread_t *thr, uint32_t flags); 1739 void hammer2_thr_wait_neg(hammer2_thread_t *thr, uint32_t flags); 1740 int hammer2_thr_wait_any(hammer2_thread_t *thr, uint32_t flags, int timo); 1741 void hammer2_thr_create(hammer2_thread_t *thr, 1742 hammer2_pfs_t *pmp, hammer2_dev_t *hmp, 1743 const char *id, int clindex, int repidx, 1744 void (*func)(void *arg)); 1745 void hammer2_thr_delete(hammer2_thread_t *thr); 1746 void hammer2_thr_remaster(hammer2_thread_t *thr); 1747 void hammer2_thr_freeze_async(hammer2_thread_t *thr); 1748 void hammer2_thr_freeze(hammer2_thread_t *thr); 1749 void hammer2_thr_unfreeze(hammer2_thread_t *thr); 1750 int hammer2_thr_break(hammer2_thread_t *thr); 1751 void hammer2_primary_xops_thread(void *arg); 1752 1753 /* 1754 * hammer2_thread.c (XOP API) 1755 */ 1756 void *hammer2_xop_alloc(hammer2_inode_t *ip, int flags); 1757 void hammer2_xop_setname(hammer2_xop_head_t *xop, 1758 const char *name, size_t name_len); 1759 void hammer2_xop_setname2(hammer2_xop_head_t *xop, 1760 const char *name, size_t name_len); 1761 size_t hammer2_xop_setname_inum(hammer2_xop_head_t *xop, hammer2_key_t inum); 1762 void hammer2_xop_setip2(hammer2_xop_head_t *xop, hammer2_inode_t *ip2); 1763 void hammer2_xop_setip3(hammer2_xop_head_t *xop, hammer2_inode_t *ip3); 1764 void hammer2_xop_reinit(hammer2_xop_head_t *xop); 1765 void hammer2_xop_helper_create(hammer2_pfs_t *pmp); 1766 void hammer2_xop_helper_cleanup(hammer2_pfs_t *pmp); 1767 void hammer2_xop_start(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc); 1768 void hammer2_xop_start_except(hammer2_xop_head_t *xop, hammer2_xop_desc_t *desc, 1769 int notidx); 1770 int hammer2_xop_collect(hammer2_xop_head_t *xop, int flags); 1771 void hammer2_xop_retire(hammer2_xop_head_t *xop, uint64_t mask); 1772 int hammer2_xop_active(hammer2_xop_head_t *xop); 1773 int hammer2_xop_feed(hammer2_xop_head_t *xop, hammer2_chain_t *chain, 1774 int clindex, int error); 1775 1776 /* 1777 * hammer2_synchro.c 1778 */ 1779 void hammer2_primary_sync_thread(void *arg); 1780 1781 /* 1782 * XOP backends in hammer2_xops.c, primarily for VNOPS. Other XOP backends 1783 * may be integrated into other source files. 1784 */ 1785 void hammer2_xop_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1786 void hammer2_xop_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1787 void hammer2_xop_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1788 void hammer2_xop_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1789 void hammer2_xop_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1790 void hammer2_xop_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1791 void hammer2_xop_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1792 void hammer2_xop_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1793 void hammer2_xop_delete(hammer2_xop_t *xop, void *scratch, int clindex); 1794 void hammer2_xop_inode_mkdirent(hammer2_xop_t *xop, void *scratch, int clindex); 1795 void hammer2_xop_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1796 void hammer2_xop_inode_create_det(hammer2_xop_t *xop, 1797 void *scratch, int clindex); 1798 void hammer2_xop_inode_create_ins(hammer2_xop_t *xop, 1799 void *scratch, int clindex); 1800 void hammer2_xop_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1801 void hammer2_xop_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1802 int clindex); 1803 void hammer2_xop_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1804 int clindex); 1805 void hammer2_xop_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1806 void hammer2_xop_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1807 void hammer2_xop_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1808 void hammer2_xop_strategy_write(hammer2_xop_t *xop, void *scratch, int clindex); 1809 1810 void hammer2_dmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1811 void hammer2_dmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1812 void hammer2_dmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1813 void hammer2_dmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1814 void hammer2_dmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1815 void hammer2_dmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1816 void hammer2_dmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1817 void hammer2_dmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1818 void hammer2_dmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1819 int clindex); 1820 void hammer2_dmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1821 void hammer2_dmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1822 void hammer2_dmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1823 int clindex); 1824 void hammer2_dmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1825 int clindex); 1826 void hammer2_dmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1827 void hammer2_dmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1828 void hammer2_dmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1829 void hammer2_dmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1830 int clindex); 1831 1832 void hammer2_rmsg_ipcluster(hammer2_xop_t *xop, void *scratch, int clindex); 1833 void hammer2_rmsg_readdir(hammer2_xop_t *xop, void *scratch, int clindex); 1834 void hammer2_rmsg_nresolve(hammer2_xop_t *xop, void *scratch, int clindex); 1835 void hammer2_rmsg_unlink(hammer2_xop_t *xop, void *scratch, int clindex); 1836 void hammer2_rmsg_nrename(hammer2_xop_t *xop, void *scratch, int clindex); 1837 void hammer2_rmsg_scanlhc(hammer2_xop_t *xop, void *scratch, int clindex); 1838 void hammer2_rmsg_scanall(hammer2_xop_t *xop, void *scratch, int clindex); 1839 void hammer2_rmsg_lookup(hammer2_xop_t *xop, void *scratch, int clindex); 1840 void hammer2_rmsg_inode_mkdirent(hammer2_xop_t *xop, void *scratch, 1841 int clindex); 1842 void hammer2_rmsg_inode_create(hammer2_xop_t *xop, void *scratch, int clindex); 1843 void hammer2_rmsg_inode_destroy(hammer2_xop_t *xop, void *scratch, int clindex); 1844 void hammer2_rmsg_inode_chain_sync(hammer2_xop_t *xop, void *scratch, 1845 int clindex); 1846 void hammer2_rmsg_inode_unlinkall(hammer2_xop_t *xop, void *scratch, 1847 int clindex); 1848 void hammer2_rmsg_inode_connect(hammer2_xop_t *xop, void *scratch, int clindex); 1849 void hammer2_rmsg_inode_flush(hammer2_xop_t *xop, void *scratch, int clindex); 1850 void hammer2_rmsg_strategy_read(hammer2_xop_t *xop, void *scratch, int clindex); 1851 void hammer2_rmsg_strategy_write(hammer2_xop_t *xop, void *scratch, 1852 int clindex); 1853 1854 extern hammer2_xop_desc_t hammer2_ipcluster_desc; 1855 extern hammer2_xop_desc_t hammer2_readdir_desc; 1856 extern hammer2_xop_desc_t hammer2_nresolve_desc; 1857 extern hammer2_xop_desc_t hammer2_unlink_desc; 1858 extern hammer2_xop_desc_t hammer2_nrename_desc; 1859 extern hammer2_xop_desc_t hammer2_scanlhc_desc; 1860 extern hammer2_xop_desc_t hammer2_scanall_desc; 1861 extern hammer2_xop_desc_t hammer2_lookup_desc; 1862 extern hammer2_xop_desc_t hammer2_delete_desc; 1863 extern hammer2_xop_desc_t hammer2_inode_mkdirent_desc; 1864 extern hammer2_xop_desc_t hammer2_inode_create_desc; 1865 extern hammer2_xop_desc_t hammer2_inode_create_det_desc; 1866 extern hammer2_xop_desc_t hammer2_inode_create_ins_desc; 1867 extern hammer2_xop_desc_t hammer2_inode_destroy_desc; 1868 extern hammer2_xop_desc_t hammer2_inode_chain_sync_desc; 1869 extern hammer2_xop_desc_t hammer2_inode_unlinkall_desc; 1870 extern hammer2_xop_desc_t hammer2_inode_connect_desc; 1871 extern hammer2_xop_desc_t hammer2_inode_flush_desc; 1872 extern hammer2_xop_desc_t hammer2_strategy_read_desc; 1873 extern hammer2_xop_desc_t hammer2_strategy_write_desc; 1874 1875 /* 1876 * hammer2_msgops.c 1877 */ 1878 int hammer2_msg_dbg_rcvmsg(kdmsg_msg_t *msg); 1879 int hammer2_msg_adhoc_input(kdmsg_msg_t *msg); 1880 1881 /* 1882 * hammer2_vfsops.c 1883 */ 1884 void hammer2_dump_chain(hammer2_chain_t *chain, int tab, int bi, int *countp, 1885 char pfx, u_int flags); 1886 int hammer2_vfs_sync(struct mount *mp, int waitflags); 1887 int hammer2_vfs_sync_pmp(hammer2_pfs_t *pmp, int waitfor); 1888 int hammer2_vfs_enospace(hammer2_inode_t *ip, off_t bytes, struct ucred *cred); 1889 1890 hammer2_pfs_t *hammer2_pfsalloc(hammer2_chain_t *chain, 1891 const hammer2_inode_data_t *ripdata, 1892 hammer2_tid_t modify_tid, 1893 hammer2_dev_t *force_local); 1894 void hammer2_pfsdealloc(hammer2_pfs_t *pmp, int clindex, int destroying); 1895 int hammer2_vfs_vget(struct mount *mp, struct vnode *dvp, 1896 ino_t ino, struct vnode **vpp); 1897 1898 void hammer2_lwinprog_ref(hammer2_pfs_t *pmp); 1899 void hammer2_lwinprog_drop(hammer2_pfs_t *pmp); 1900 void hammer2_lwinprog_wait(hammer2_pfs_t *pmp, int pipe); 1901 1902 void hammer2_pfs_memory_wait(hammer2_pfs_t *pmp); 1903 void hammer2_pfs_memory_inc(hammer2_pfs_t *pmp); 1904 void hammer2_pfs_memory_wakeup(hammer2_pfs_t *pmp, int count); 1905 1906 /* 1907 * hammer2_freemap.c 1908 */ 1909 int hammer2_freemap_alloc(hammer2_chain_t *chain, size_t bytes); 1910 void hammer2_freemap_adjust(hammer2_dev_t *hmp, 1911 hammer2_blockref_t *bref, int how); 1912 1913 /* 1914 * hammer2_cluster.c 1915 */ 1916 uint8_t hammer2_cluster_type(hammer2_cluster_t *cluster); 1917 void hammer2_cluster_bref(hammer2_cluster_t *cluster, hammer2_blockref_t *bref); 1918 void hammer2_cluster_ref(hammer2_cluster_t *cluster); 1919 void hammer2_cluster_drop(hammer2_cluster_t *cluster); 1920 void hammer2_cluster_unhold(hammer2_cluster_t *cluster); 1921 void hammer2_cluster_rehold(hammer2_cluster_t *cluster); 1922 void hammer2_cluster_lock(hammer2_cluster_t *cluster, int how); 1923 int hammer2_cluster_check(hammer2_cluster_t *cluster, hammer2_key_t lokey, 1924 int flags); 1925 void hammer2_cluster_resolve(hammer2_cluster_t *cluster); 1926 void hammer2_cluster_forcegood(hammer2_cluster_t *cluster); 1927 void hammer2_cluster_unlock(hammer2_cluster_t *cluster); 1928 1929 void hammer2_bulkfree_init(hammer2_dev_t *hmp); 1930 void hammer2_bulkfree_uninit(hammer2_dev_t *hmp); 1931 int hammer2_bulkfree_pass(hammer2_dev_t *hmp, hammer2_chain_t *vchain, 1932 struct hammer2_ioc_bulkfree *bfi); 1933 void hammer2_dummy_xop_from_chain(hammer2_xop_head_t *xop, 1934 hammer2_chain_t *chain); 1935 1936 /* 1937 * hammer2_iocom.c 1938 */ 1939 void hammer2_iocom_init(hammer2_dev_t *hmp); 1940 void hammer2_iocom_uninit(hammer2_dev_t *hmp); 1941 void hammer2_cluster_reconnect(hammer2_dev_t *hmp, struct file *fp); 1942 void hammer2_volconf_update(hammer2_dev_t *hmp, int index); 1943 1944 /* 1945 * hammer2_strategy.c 1946 */ 1947 int hammer2_vop_strategy(struct vop_strategy_args *ap); 1948 int hammer2_vop_bmap(struct vop_bmap_args *ap); 1949 void hammer2_bioq_sync(hammer2_pfs_t *pmp); 1950 void hammer2_dedup_record(hammer2_chain_t *chain, hammer2_io_t *dio, 1951 const char *data); 1952 void hammer2_dedup_clear(hammer2_dev_t *hmp); 1953 1954 /* 1955 * More complex inlines 1956 */ 1957 1958 #define hammer2_xop_gdata(xop) _hammer2_xop_gdata((xop), __FILE__, __LINE__) 1959 1960 static __inline 1961 const hammer2_media_data_t * 1962 _hammer2_xop_gdata(hammer2_xop_head_t *xop, const char *file, int line) 1963 { 1964 hammer2_chain_t *focus; 1965 const void *data; 1966 1967 focus = xop->cluster.focus; 1968 if (focus->dio) { 1969 lockmgr(&focus->diolk, LK_SHARED); 1970 if ((xop->focus_dio = focus->dio) != NULL) { 1971 _hammer2_io_ref(xop->focus_dio HAMMER2_IO_DEBUG_CALL); 1972 hammer2_io_bkvasync(xop->focus_dio); 1973 } 1974 data = focus->data; 1975 lockmgr(&focus->diolk, LK_RELEASE); 1976 } else { 1977 data = focus->data; 1978 } 1979 1980 return data; 1981 } 1982 1983 #define hammer2_xop_pdata(xop) _hammer2_xop_pdata((xop), __FILE__, __LINE__) 1984 1985 static __inline 1986 void 1987 _hammer2_xop_pdata(hammer2_xop_head_t *xop, const char *file, int line) 1988 { 1989 if (xop->focus_dio) 1990 _hammer2_io_putblk(&xop->focus_dio HAMMER2_IO_DEBUG_CALL); 1991 } 1992 1993 #endif /* !_KERNEL */ 1994 #endif /* !_VFS_HAMMER2_HAMMER2_H_ */ 1995