1 /* 2 * Copyright (c) 2007 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sys/vfs/hammer/hammer.h,v 1.6 2007/11/19 00:53:40 dillon Exp $ 35 */ 36 /* 37 * This header file contains structures used internally by the HAMMERFS 38 * implementation. See hammer_disk.h for on-disk structures. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/types.h> 43 #include <sys/kernel.h> 44 #include <sys/systm.h> 45 #include <sys/tree.h> 46 #include <sys/malloc.h> 47 #include <sys/mount.h> 48 #include <sys/vnode.h> 49 #include <sys/globaldata.h> 50 #include <sys/lockf.h> 51 #include <sys/buf.h> 52 #include <sys/queue.h> 53 #include <sys/globaldata.h> 54 55 #include <sys/buf2.h> 56 #include "hammer_alist.h" 57 #include "hammer_disk.h" 58 #include "hammer_mount.h" 59 60 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 61 62 MALLOC_DECLARE(M_HAMMER); 63 64 struct hammer_mount; 65 66 /* 67 * Key structure used for custom RB tree inode lookups. This prototypes 68 * the function hammer_ino_rb_tree_RB_LOOKUP_INFO(root, info). 69 */ 70 typedef struct hammer_inode_info { 71 u_int64_t obj_id; /* (key) object identifier */ 72 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */ 73 } *hammer_inode_info_t; 74 75 /* 76 * HAMMER Transaction tracking 77 */ 78 struct hammer_transaction { 79 struct hammer_mount *hmp; 80 hammer_tid_t tid; 81 }; 82 83 typedef struct hammer_transaction *hammer_transaction_t; 84 85 /* 86 * HAMMER locks 87 */ 88 struct hammer_lock { 89 int refs; 90 int lockcount; 91 int wanted; 92 struct thread *locktd; 93 }; 94 95 static __inline int 96 hammer_islocked(struct hammer_lock *lock) 97 { 98 return(lock->lockcount != 0); 99 } 100 101 static __inline int 102 hammer_islastref(struct hammer_lock *lock) 103 { 104 return(lock->refs == 1); 105 } 106 107 /* 108 * Structure used to represent an inode in-memory. 109 * 110 * The record and data associated with an inode may be out of sync with 111 * the disk (xDIRTY flags), or not even on the disk at all (ONDISK flag 112 * clear). 113 * 114 * An inode may also hold a cache of unsynchronized records, used for 115 * database and directories only. Unsynchronized regular file data is 116 * stored in the buffer cache. 117 * 118 * NOTE: A file which is created and destroyed within the initial 119 * synchronization period can wind up not doing any disk I/O at all. 120 * 121 * Finally, an inode may cache numerous disk-referencing B-Tree cursors. 122 */ 123 struct hammer_ino_rb_tree; 124 struct hammer_inode; 125 RB_HEAD(hammer_ino_rb_tree, hammer_inode); 126 RB_PROTOTYPEX(hammer_ino_rb_tree, INFO, hammer_inode, rb_node, 127 hammer_ino_rb_compare, hammer_inode_info_t); 128 129 struct hammer_rec_rb_tree; 130 struct hammer_record; 131 RB_HEAD(hammer_rec_rb_tree, hammer_record); 132 RB_PROTOTYPEX(hammer_rec_rb_tree, INFO, hammer_record, rb_node, 133 hammer_rec_rb_compare, hammer_base_elm_t); 134 135 TAILQ_HEAD(hammer_node_list, hammer_node); 136 137 struct hammer_inode { 138 RB_ENTRY(hammer_inode) rb_node; 139 u_int64_t obj_id; /* (key) object identifier */ 140 hammer_tid_t obj_asof; /* (key) snapshot transid or 0 */ 141 hammer_tid_t last_tid; /* last modified tid (for fsync) */ 142 struct hammer_mount *hmp; 143 int flags; 144 struct vnode *vp; 145 struct lockf advlock; 146 struct hammer_lock lock; 147 struct hammer_inode_record ino_rec; 148 struct hammer_inode_data ino_data; 149 struct hammer_rec_rb_tree rec_tree; /* red-black record tree */ 150 struct hammer_node *cache; /* cached B-Tree node shortcut */ 151 }; 152 153 typedef struct hammer_inode *hammer_inode_t; 154 155 #define VTOI(vp) ((struct hammer_inode *)(vp)->v_data) 156 157 #define HAMMER_INODE_DDIRTY 0x0001 /* in-memory ino_data is dirty */ 158 #define HAMMER_INODE_RDIRTY 0x0002 /* in-memory ino_rec is dirty */ 159 #define HAMMER_INODE_ITIMES 0x0004 /* in-memory mtime/atime modified */ 160 #define HAMMER_INODE_ONDISK 0x0010 /* inode is on-disk (else not yet) */ 161 162 #define HAMMER_MAX_INODE_CURSORS 4 163 164 /* 165 * Structure used to represent an unsynchronized record in-memory. This 166 * structure is orgranized in a per-inode RB-tree. If the inode is not 167 * on disk then neither are any records and the in-memory record tree 168 * represents the entire contents of the inode. If the inode is on disk 169 * then the on-disk B-Tree is scanned in parallel with the in-memory 170 * RB-Tree to synthesize the current state of the file. 171 * 172 * Only current (delete_tid == 0) unsynchronized records are kept in-memory. 173 */ 174 struct hammer_record { 175 RB_ENTRY(hammer_record) rb_node; 176 hammer_tid_t last_tid; 177 struct hammer_inode *ip; 178 union hammer_record_ondisk rec; 179 union hammer_data_ondisk *data; 180 int32_t data_len; 181 int flags; 182 }; 183 184 typedef struct hammer_record *hammer_record_t; 185 186 #define HAMMER_RECF_ALLOCDATA 0x0001 187 #define HAMMER_RECF_ONRBTREE 0x0002 188 #define HAMMER_RECF_DELETION 0x0004 /* placemark a deletion */ 189 190 /* 191 * Structures used to internally represent a volume and a cluster 192 */ 193 struct hammer_volume; 194 struct hammer_cluster; 195 struct hammer_supercl; 196 struct hammer_buffer; 197 struct hammer_node; 198 RB_HEAD(hammer_vol_rb_tree, hammer_volume); 199 RB_HEAD(hammer_clu_rb_tree, hammer_cluster); 200 RB_HEAD(hammer_scl_rb_tree, hammer_supercl); 201 RB_HEAD(hammer_buf_rb_tree, hammer_buffer); 202 RB_HEAD(hammer_nod_rb_tree, hammer_node); 203 204 RB_PROTOTYPE2(hammer_vol_rb_tree, hammer_volume, rb_node, 205 hammer_vol_rb_compare, int32_t); 206 RB_PROTOTYPE2(hammer_clu_rb_tree, hammer_cluster, rb_node, 207 hammer_clu_rb_compare, int32_t); 208 RB_PROTOTYPE2(hammer_scl_rb_tree, hammer_supercl, rb_node, 209 hammer_scl_rb_compare, int32_t); 210 RB_PROTOTYPE2(hammer_buf_rb_tree, hammer_buffer, rb_node, 211 hammer_buf_rb_compare, int32_t); 212 RB_PROTOTYPE2(hammer_nod_rb_tree, hammer_node, rb_node, 213 hammer_nod_rb_compare, int32_t); 214 215 /* 216 * IO management - embedded at the head of various in-memory structures 217 */ 218 enum hammer_io_type { HAMMER_STRUCTURE_VOLUME, 219 HAMMER_STRUCTURE_SUPERCL, 220 HAMMER_STRUCTURE_CLUSTER, 221 HAMMER_STRUCTURE_BUFFER }; 222 223 union hammer_io_structure; 224 225 struct worklist { 226 LIST_ENTRY(worklist) node; 227 }; 228 229 struct hammer_io { 230 struct worklist worklist; 231 struct hammer_lock lock; 232 enum hammer_io_type type; 233 struct buf *bp; 234 int64_t offset; 235 u_int modified : 1; /* bp's data was modified */ 236 u_int released : 1; /* bp released (w/ B_LOCKED set) */ 237 }; 238 239 typedef struct hammer_io *hammer_io_t; 240 241 /* 242 * In-memory volume representing on-disk buffer 243 */ 244 struct hammer_volume { 245 struct hammer_io io; 246 RB_ENTRY(hammer_volume) rb_node; 247 struct hammer_clu_rb_tree rb_clus_root; 248 struct hammer_scl_rb_tree rb_scls_root; 249 struct hammer_volume_ondisk *ondisk; 250 struct hammer_alist_live alist; 251 int32_t vol_no; 252 int32_t vol_clsize; 253 int64_t cluster_base; /* base offset of cluster 0 */ 254 char *vol_name; 255 struct vnode *devvp; 256 struct hammer_mount *hmp; 257 int vol_flags; 258 }; 259 260 typedef struct hammer_volume *hammer_volume_t; 261 262 /* 263 * In-memory super-cluster representing on-disk buffer 264 */ 265 struct hammer_supercl { 266 struct hammer_io io; 267 RB_ENTRY(hammer_supercl) rb_node; 268 struct hammer_supercl_ondisk *ondisk; 269 struct hammer_volume *volume; 270 struct hammer_alist_live alist; 271 int32_t scl_no; 272 }; 273 274 typedef struct hammer_supercl *hammer_supercl_t; 275 276 /* 277 * In-memory cluster representing on-disk buffer 278 * 279 * The cluster's indexing range is cached in hammer_cluster, separate 280 * from the ondisk info in order to allow cursors to point to it. 281 */ 282 struct hammer_cluster { 283 struct hammer_io io; 284 RB_ENTRY(hammer_cluster) rb_node; 285 struct hammer_buf_rb_tree rb_bufs_root; 286 struct hammer_cluster_ondisk *ondisk; 287 struct hammer_volume *volume; 288 struct hammer_alist_live alist_master; 289 struct hammer_alist_live alist_btree; 290 struct hammer_alist_live alist_record; 291 struct hammer_alist_live alist_mdata; 292 struct hammer_nod_rb_tree rb_nods_root; /* cursors in cluster */ 293 struct hammer_base_elm clu_btree_beg; /* copy of on-disk info */ 294 struct hammer_base_elm clu_btree_end; /* copy of on-disk info */ 295 int32_t clu_no; 296 }; 297 298 typedef struct hammer_cluster *hammer_cluster_t; 299 300 /* 301 * In-memory buffer (other then volume, super-cluster, or cluster), 302 * representing an on-disk buffer. 303 */ 304 struct hammer_buffer { 305 struct hammer_io io; 306 RB_ENTRY(hammer_buffer) rb_node; 307 hammer_fsbuf_ondisk_t ondisk; 308 struct hammer_volume *volume; 309 struct hammer_cluster *cluster; 310 int32_t buf_no; 311 u_int64_t buf_type; 312 struct hammer_alist_live alist; 313 struct hammer_node_list clist; 314 struct hammer_node *save_scan; 315 }; 316 317 typedef struct hammer_buffer *hammer_buffer_t; 318 319 /* 320 * In-memory B-Tree node, representing an on-disk B-Tree node. 321 * 322 * This is a hang-on structure which is backed by a hammer_buffer, 323 * indexed by a hammer_cluster, and used for fine-grained locking of 324 * B-Tree nodes in order to properly control lock ordering. A hammer_buffer 325 * can contain multiple nodes representing wildly disassociated portions 326 * of the B-Tree so locking cannot be done on a buffer-by-buffer basis. 327 * 328 * This structure uses a cluster-relative index to reduce the number 329 * of layers required to access it, and also because all on-disk B-Tree 330 * references are cluster-relative offsets. 331 */ 332 struct hammer_node { 333 struct hammer_lock lock; /* node-by-node lock */ 334 TAILQ_ENTRY(hammer_node) entry; /* per-buffer linkage */ 335 RB_ENTRY(hammer_node) rb_node; /* per-cluster linkage */ 336 int32_t node_offset; /* cluster-rel offset */ 337 struct hammer_cluster *cluster; 338 struct hammer_buffer *buffer; /* backing buffer */ 339 hammer_node_ondisk_t ondisk; /* ptr to on-disk structure */ 340 struct hammer_node **cache1; /* passive cache(s) */ 341 struct hammer_node **cache2; 342 }; 343 344 typedef struct hammer_node *hammer_node_t; 345 346 /* 347 * Common I/O management structure - embedded in in-memory structures 348 * which are backed by filesystem buffers. 349 */ 350 union hammer_io_structure { 351 struct hammer_io io; 352 struct hammer_volume volume; 353 struct hammer_supercl supercl; 354 struct hammer_cluster cluster; 355 struct hammer_buffer buffer; 356 }; 357 358 #define HAMFS_CLUSTER_DIRTY 0x0001 359 360 #include "hammer_cursor.h" 361 362 /* 363 * Internal hammer mount data structure 364 */ 365 struct hammer_mount { 366 struct mount *mp; 367 /*struct vnode *rootvp;*/ 368 struct hammer_ino_rb_tree rb_inos_root; 369 struct hammer_vol_rb_tree rb_vols_root; 370 struct hammer_volume *rootvol; 371 struct hammer_cluster *rootcl; 372 char *zbuf; /* HAMMER_BUFSIZE bytes worth of all-zeros */ 373 uuid_t fsid; 374 udev_t fsid_udev; 375 u_int32_t namekey_iterator; 376 hammer_tid_t last_tid; /* tid for transaction id */ 377 hammer_tid_t last_ino; /* inode creation iterator */ 378 }; 379 380 typedef struct hammer_mount *hammer_mount_t; 381 382 #endif 383 384 #if defined(_KERNEL) 385 386 extern struct vop_ops hammer_vnode_vops; 387 extern struct hammer_alist_config Buf_alist_config; 388 extern struct hammer_alist_config Vol_normal_alist_config; 389 extern struct hammer_alist_config Vol_super_alist_config; 390 extern struct hammer_alist_config Supercl_alist_config; 391 extern struct hammer_alist_config Clu_master_alist_config; 392 extern struct hammer_alist_config Clu_slave_alist_config; 393 extern struct bio_ops hammer_bioops; 394 395 int hammer_vop_inactive(struct vop_inactive_args *); 396 int hammer_vop_reclaim(struct vop_reclaim_args *); 397 int hammer_vfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp); 398 399 int hammer_get_vnode(struct hammer_inode *ip, int lktype, 400 struct vnode **vpp); 401 struct hammer_inode *hammer_get_inode(hammer_mount_t hmp, 402 u_int64_t obj_id, int *errorp); 403 void hammer_put_inode(struct hammer_inode *ip); 404 void hammer_put_inode_ref(struct hammer_inode *ip); 405 406 int hammer_unload_inode(hammer_inode_t ip, void *data __unused); 407 int hammer_unload_volume(hammer_volume_t volume, void *data __unused); 408 int hammer_install_volume(hammer_mount_t hmp, const char *volname); 409 410 hammer_record_ondisk_t 411 hammer_ip_first(hammer_cursor_t cursor, hammer_inode_t ip); 412 hammer_record_ondisk_t 413 hammer_ip_next(hammer_cursor_t cursor); 414 int hammer_ip_resolve_data(hammer_cursor_t cursor); 415 hammer_record_t 416 hammer_alloc_ip_record(struct hammer_transaction *trans, 417 hammer_inode_t ip); 418 void hammer_free_ip_record(hammer_record_t record); 419 420 int hammer_cursor_up(hammer_cursor_t cursor); 421 int hammer_cursor_toroot(hammer_cursor_t cursor); 422 int hammer_cursor_down(hammer_cursor_t cursor); 423 424 void hammer_lock_ex(struct hammer_lock *lock); 425 int hammer_lock_ex_try(struct hammer_lock *lock); 426 void hammer_lock_sh(struct hammer_lock *lock); 427 void hammer_unlock(struct hammer_lock *lock); 428 void hammer_ref(struct hammer_lock *lock); 429 void hammer_unref(struct hammer_lock *lock); 430 void hammer_downgrade(struct hammer_lock *lock); 431 432 u_int32_t hammer_to_unix_xid(uuid_t *uuid); 433 void hammer_guid_to_uuid(uuid_t *uuid, u_int32_t guid); 434 void hammer_to_timespec(hammer_tid_t tid, struct timespec *ts); 435 hammer_tid_t hammer_timespec_to_transid(struct timespec *ts); 436 437 enum vtype hammer_get_vnode_type(u_int8_t obj_type); 438 u_int8_t hammer_get_obj_type(enum vtype vtype); 439 int64_t hammer_directory_namekey(void *name, int len); 440 441 int hammer_init_cursor_hmp(hammer_cursor_t cursor, hammer_mount_t hmp); 442 int hammer_init_cursor_ip(hammer_cursor_t cursor, hammer_inode_t ip); 443 void hammer_done_cursor(hammer_cursor_t cursor); 444 445 int hammer_btree_lookup(hammer_cursor_t cursor); 446 int hammer_btree_extract(hammer_cursor_t cursor, int flags); 447 int hammer_btree_iterate(hammer_cursor_t cursor); 448 int hammer_btree_insert(hammer_cursor_t cursor, hammer_btree_elm_t elm); 449 int hammer_btree_delete(hammer_cursor_t cursor); 450 int hammer_btree_cmp(hammer_base_elm_t key1, hammer_base_elm_t key2); 451 452 void *hammer_bread(struct hammer_cluster *cluster, int32_t cloff, 453 u_int64_t buf_type, int *errorp, 454 struct hammer_buffer **bufferp); 455 456 hammer_volume_t hammer_get_root_volume(hammer_mount_t hmp, int *errorp); 457 hammer_cluster_t hammer_get_root_cluster(hammer_mount_t hmp, int *errorp); 458 459 hammer_volume_t hammer_get_volume(hammer_mount_t hmp, 460 int32_t vol_no, int *errorp); 461 hammer_supercl_t hammer_get_supercl(hammer_volume_t volume, 462 int32_t scl_no, int *errorp, int isnew); 463 hammer_cluster_t hammer_get_cluster(hammer_volume_t volume, 464 int32_t clu_no, int *errorp, int isnew); 465 hammer_buffer_t hammer_get_buffer(hammer_cluster_t cluster, 466 int32_t buf_no, u_int64_t buf_type, int *errorp); 467 468 int hammer_ref_cluster(hammer_cluster_t cluster); 469 int hammer_ref_buffer(hammer_buffer_t buffer); 470 void hammer_flush_buffer_nodes(hammer_buffer_t buffer); 471 472 473 void hammer_rel_volume(hammer_volume_t volume, int flush); 474 void hammer_rel_supercl(hammer_supercl_t supercl, int flush); 475 void hammer_rel_cluster(hammer_cluster_t cluster, int flush); 476 void hammer_rel_buffer(hammer_buffer_t buffer, int flush); 477 478 hammer_node_t hammer_get_node(hammer_cluster_t cluster, 479 int32_t node_offset, int *errorp); 480 int hammer_ref_node(hammer_node_t node); 481 void hammer_rel_node(hammer_node_t node); 482 void hammer_cache_node(hammer_node_t node, 483 struct hammer_node **cache); 484 void hammer_uncache_node(struct hammer_node **cache); 485 void hammer_flush_node(hammer_node_t node); 486 487 struct hammer_cluster *hammer_get_rootcl(struct hammer_mount *hmp); 488 void hammer_dup_buffer(struct hammer_buffer **bufferp, 489 struct hammer_buffer *buffer); 490 void hammer_dup_cluster(struct hammer_cluster **clusterp, 491 struct hammer_cluster *cluster); 492 hammer_node_t hammer_alloc_btree(struct hammer_cluster *cluster, int *errorp); 493 void *hammer_alloc_data(struct hammer_cluster *cluster, int32_t bytes, 494 int *errorp, struct hammer_buffer **bufferp); 495 void *hammer_alloc_record(struct hammer_cluster *cluster, 496 int *errorp, struct hammer_buffer **bufferp); 497 void hammer_free_btree_ptr(struct hammer_buffer *buffer, 498 hammer_node_ondisk_t node); 499 void hammer_free_data_ptr(struct hammer_buffer *buffer, 500 void *data, int bytes); 501 void hammer_free_record_ptr(struct hammer_buffer *buffer, 502 union hammer_record_ondisk *rec); 503 void hammer_free_btree(struct hammer_cluster *cluster, int32_t bclu_offset); 504 void hammer_free_data(struct hammer_cluster *cluster, int32_t bclu_offset, 505 int32_t bytes); 506 void hammer_free_record(struct hammer_cluster *cluster, int32_t bclu_offset); 507 508 void hammer_put_volume(struct hammer_volume *volume, int flush); 509 void hammer_put_supercl(struct hammer_supercl *supercl, int flush); 510 void hammer_put_cluster(struct hammer_cluster *cluster, int flush); 511 void hammer_put_buffer(struct hammer_buffer *buffer, int flush); 512 513 void hammer_init_alist_config(void); 514 515 void hammer_start_transaction(struct hammer_transaction *trans, 516 struct hammer_mount *hmp); 517 void hammer_commit_transaction(struct hammer_transaction *trans); 518 void hammer_abort_transaction(struct hammer_transaction *trans); 519 520 void hammer_modify_inode(struct hammer_transaction *trans, 521 hammer_inode_t ip, int flags); 522 int hammer_create_inode(struct hammer_transaction *trans, struct vattr *vap, 523 struct ucred *cred, struct hammer_inode *dip, 524 struct hammer_inode **ipp); 525 void hammer_rel_inode(hammer_inode_t ip); 526 527 int hammer_add_directory(struct hammer_transaction *trans, 528 hammer_inode_t dip, struct namecache *ncp, 529 hammer_inode_t nip); 530 int hammer_del_directory(struct hammer_transaction *trans, 531 hammer_cursor_t cursor, hammer_inode_t dip, 532 hammer_inode_t ip); 533 int hammer_delete_range(struct hammer_transaction *trans, 534 hammer_inode_t ip, int64_t off_beg, int64_t off_end); 535 int hammer_add_data(struct hammer_transaction *trans, 536 hammer_inode_t ip, int64_t offset, 537 void *data, int bytes); 538 539 int hammer_io_read(struct vnode *devvp, struct hammer_io *io); 540 int hammer_io_new(struct vnode *devvp, struct hammer_io *io); 541 void hammer_io_release(struct hammer_io *io, int flush); 542 int hammer_io_checkflush(hammer_io_t io); 543 544 #endif 545 546 /* 547 * Inline support functions (not kernel specific) 548 */ 549 static __inline void 550 hammer_modify_volume(struct hammer_volume *volume) 551 { 552 volume->io.modified = 1; 553 } 554 555 static __inline void 556 hammer_modify_supercl(struct hammer_supercl *supercl) 557 { 558 supercl->io.modified = 1; 559 } 560 561 static __inline void 562 hammer_modify_cluster(struct hammer_cluster *cluster) 563 { 564 cluster->io.modified = 1; 565 } 566 567 static __inline void 568 hammer_modify_buffer(struct hammer_buffer *buffer) 569 { 570 buffer->io.modified = 1; 571 } 572 573 static __inline void 574 hammer_modify_node(struct hammer_node *node) 575 { 576 node->buffer->io.modified = 1; 577 } 578 579 /* 580 * Return the cluster-relative byte offset of an element within a buffer 581 */ 582 static __inline int 583 hammer_bclu_offset(struct hammer_buffer *buffer, void *ptr) 584 { 585 int bclu_offset; 586 587 bclu_offset = buffer->buf_no * HAMMER_BUFSIZE + 588 ((char *)ptr - (char *)buffer->ondisk); 589 return(bclu_offset); 590 } 591 592