1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * journal.h 4 * 5 * Defines journalling api and structures. 6 * 7 * Copyright (C) 2003, 2005 Oracle. All rights reserved. 8 */ 9 10 #ifndef OCFS2_JOURNAL_H 11 #define OCFS2_JOURNAL_H 12 13 #include <linux/fs.h> 14 #include <linux/jbd2.h> 15 16 enum ocfs2_journal_state { 17 OCFS2_JOURNAL_FREE = 0, 18 OCFS2_JOURNAL_LOADED, 19 OCFS2_JOURNAL_IN_SHUTDOWN, 20 }; 21 22 struct ocfs2_super; 23 struct ocfs2_dinode; 24 25 /* 26 * The recovery_list is a simple linked list of node numbers to recover. 27 * It is protected by the recovery_lock. 28 */ 29 30 struct ocfs2_recovery_map { 31 unsigned int rm_used; 32 unsigned int *rm_entries; 33 }; 34 35 36 struct ocfs2_journal { 37 enum ocfs2_journal_state j_state; /* Journals current state */ 38 39 journal_t *j_journal; /* The kernels journal type */ 40 struct inode *j_inode; /* Kernel inode pointing to 41 * this journal */ 42 struct ocfs2_super *j_osb; /* pointer to the super 43 * block for the node 44 * we're currently 45 * running on -- not 46 * necessarily the super 47 * block from the node 48 * which we usually run 49 * from (recovery, 50 * etc) */ 51 struct buffer_head *j_bh; /* Journal disk inode block */ 52 atomic_t j_num_trans; /* Number of transactions 53 * currently in the system. */ 54 spinlock_t j_lock; 55 unsigned long j_trans_id; 56 struct rw_semaphore j_trans_barrier; 57 wait_queue_head_t j_checkpointed; 58 59 /* both fields protected by j_lock*/ 60 struct list_head j_la_cleanups; 61 struct work_struct j_recovery_work; 62 }; 63 64 extern spinlock_t trans_inc_lock; 65 66 /* wrap j_trans_id so we never have it equal to zero. */ 67 static inline unsigned long ocfs2_inc_trans_id(struct ocfs2_journal *j) 68 { 69 unsigned long old_id; 70 spin_lock(&trans_inc_lock); 71 old_id = j->j_trans_id++; 72 if (unlikely(!j->j_trans_id)) 73 j->j_trans_id = 1; 74 spin_unlock(&trans_inc_lock); 75 return old_id; 76 } 77 78 static inline void ocfs2_set_ci_lock_trans(struct ocfs2_journal *journal, 79 struct ocfs2_caching_info *ci) 80 { 81 spin_lock(&trans_inc_lock); 82 ci->ci_last_trans = journal->j_trans_id; 83 spin_unlock(&trans_inc_lock); 84 } 85 86 /* Used to figure out whether it's safe to drop a metadata lock on an 87 * cached object. Returns true if all the object's changes have been 88 * checkpointed to disk. You should be holding the spinlock on the 89 * metadata lock while calling this to be sure that nobody can take 90 * the lock and put it on another transaction. */ 91 static inline int ocfs2_ci_fully_checkpointed(struct ocfs2_caching_info *ci) 92 { 93 int ret; 94 struct ocfs2_journal *journal = 95 OCFS2_SB(ocfs2_metadata_cache_get_super(ci))->journal; 96 97 spin_lock(&trans_inc_lock); 98 ret = time_after(journal->j_trans_id, ci->ci_last_trans); 99 spin_unlock(&trans_inc_lock); 100 return ret; 101 } 102 103 /* convenience function to check if an object backed by struct 104 * ocfs2_caching_info is still new (has never hit disk) Will do you a 105 * favor and set created_trans = 0 when you've 106 * been checkpointed. returns '1' if the ci is still new. */ 107 static inline int ocfs2_ci_is_new(struct ocfs2_caching_info *ci) 108 { 109 int ret; 110 struct ocfs2_journal *journal = 111 OCFS2_SB(ocfs2_metadata_cache_get_super(ci))->journal; 112 113 spin_lock(&trans_inc_lock); 114 ret = !(time_after(journal->j_trans_id, ci->ci_created_trans)); 115 if (!ret) 116 ci->ci_created_trans = 0; 117 spin_unlock(&trans_inc_lock); 118 return ret; 119 } 120 121 /* Wrapper for inodes so we can check system files */ 122 static inline int ocfs2_inode_is_new(struct inode *inode) 123 { 124 /* System files are never "new" as they're written out by 125 * mkfs. This helps us early during mount, before we have the 126 * journal open and j_trans_id could be junk. */ 127 if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SYSTEM_FILE) 128 return 0; 129 130 return ocfs2_ci_is_new(INODE_CACHE(inode)); 131 } 132 133 static inline void ocfs2_ci_set_new(struct ocfs2_super *osb, 134 struct ocfs2_caching_info *ci) 135 { 136 spin_lock(&trans_inc_lock); 137 ci->ci_created_trans = osb->journal->j_trans_id; 138 spin_unlock(&trans_inc_lock); 139 } 140 141 /* Exported only for the journal struct init code in super.c. Do not call. */ 142 void ocfs2_orphan_scan_init(struct ocfs2_super *osb); 143 void ocfs2_orphan_scan_start(struct ocfs2_super *osb); 144 void ocfs2_orphan_scan_stop(struct ocfs2_super *osb); 145 146 void ocfs2_complete_recovery(struct work_struct *work); 147 void ocfs2_wait_for_recovery(struct ocfs2_super *osb); 148 149 int ocfs2_recovery_init(struct ocfs2_super *osb); 150 void ocfs2_recovery_exit(struct ocfs2_super *osb); 151 152 int ocfs2_compute_replay_slots(struct ocfs2_super *osb); 153 /* 154 * Journal Control: 155 * Initialize, Load, Shutdown, Wipe a journal. 156 * 157 * ocfs2_journal_alloc - Initialize skeleton for journal structure. 158 * ocfs2_journal_init - Initialize journal structures in the OSB. 159 * ocfs2_journal_load - Load the given journal off disk. Replay it if 160 * there's transactions still in there. 161 * ocfs2_journal_shutdown - Shutdown a journal, this will flush all 162 * uncommitted, uncheckpointed transactions. 163 * ocfs2_journal_wipe - Wipe transactions from a journal. Optionally 164 * zero out each block. 165 * ocfs2_recovery_thread - Perform recovery on a node. osb is our own osb. 166 * ocfs2_mark_dead_nodes - Start recovery on nodes we won't get a heartbeat 167 * event on. 168 * ocfs2_start_checkpoint - Kick the commit thread to do a checkpoint. 169 */ 170 void ocfs2_set_journal_params(struct ocfs2_super *osb); 171 int ocfs2_journal_alloc(struct ocfs2_super *osb); 172 int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty); 173 void ocfs2_journal_shutdown(struct ocfs2_super *osb); 174 int ocfs2_journal_wipe(struct ocfs2_journal *journal, 175 int full); 176 int ocfs2_journal_load(struct ocfs2_journal *journal, int local, 177 int replayed); 178 int ocfs2_check_journals_nolocks(struct ocfs2_super *osb); 179 void ocfs2_recovery_thread(struct ocfs2_super *osb, 180 int node_num); 181 int ocfs2_mark_dead_nodes(struct ocfs2_super *osb); 182 void ocfs2_complete_mount_recovery(struct ocfs2_super *osb); 183 void ocfs2_complete_quota_recovery(struct ocfs2_super *osb); 184 185 static inline void ocfs2_start_checkpoint(struct ocfs2_super *osb) 186 { 187 wake_up(&osb->checkpoint_event); 188 } 189 190 static inline void ocfs2_checkpoint_inode(struct inode *inode) 191 { 192 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 193 194 if (ocfs2_mount_local(osb)) 195 return; 196 197 if (!ocfs2_ci_fully_checkpointed(INODE_CACHE(inode))) { 198 /* WARNING: This only kicks off a single 199 * checkpoint. If someone races you and adds more 200 * metadata to the journal, you won't know, and will 201 * wind up waiting *a lot* longer than necessary. Right 202 * now we only use this in clear_inode so that's 203 * OK. */ 204 ocfs2_start_checkpoint(osb); 205 206 wait_event(osb->journal->j_checkpointed, 207 ocfs2_ci_fully_checkpointed(INODE_CACHE(inode))); 208 } 209 } 210 211 /* 212 * Transaction Handling: 213 * Manage the lifetime of a transaction handle. 214 * 215 * ocfs2_start_trans - Begin a transaction. Give it an upper estimate of 216 * the number of blocks that will be changed during 217 * this handle. 218 * ocfs2_commit_trans - Complete a handle. It might return -EIO if 219 * the journal was aborted. The majority of paths don't 220 * check the return value as an error there comes too 221 * late to do anything (and will be picked up in a 222 * later transaction). 223 * ocfs2_extend_trans - Extend a handle by nblocks credits. This may 224 * commit the handle to disk in the process, but will 225 * not release any locks taken during the transaction. 226 * ocfs2_journal_access* - Notify the handle that we want to journal this 227 * buffer. Will have to call ocfs2_journal_dirty once 228 * we've actually dirtied it. Type is one of . or . 229 * Always call the specific flavor of 230 * ocfs2_journal_access_*() unless you intend to 231 * manage the checksum by hand. 232 * ocfs2_journal_dirty - Mark a journalled buffer as having dirty data. 233 * ocfs2_jbd2_inode_add_write - Mark an inode with range so that its data goes 234 * out before the current handle commits. 235 */ 236 237 /* You must always start_trans with a number of buffs > 0, but it's 238 * perfectly legal to go through an entire transaction without having 239 * dirtied any buffers. */ 240 handle_t *ocfs2_start_trans(struct ocfs2_super *osb, 241 int max_buffs); 242 int ocfs2_commit_trans(struct ocfs2_super *osb, 243 handle_t *handle); 244 int ocfs2_extend_trans(handle_t *handle, int nblocks); 245 int ocfs2_allocate_extend_trans(handle_t *handle, 246 int thresh); 247 248 /* 249 * Define an arbitrary limit for the amount of data we will anticipate 250 * writing to any given transaction. For unbounded transactions such as 251 * fallocate(2) we can write more than this, but we always 252 * start off at the maximum transaction size and grow the transaction 253 * optimistically as we go. 254 */ 255 #define OCFS2_MAX_TRANS_DATA 64U 256 257 /* 258 * Create access is for when we get a newly created buffer and we're 259 * not gonna read it off disk, but rather fill it ourselves. Right 260 * now, we don't do anything special with this (it turns into a write 261 * request), but this is a good placeholder in case we do... 262 * 263 * Write access is for when we read a block off disk and are going to 264 * modify it. This way the journalling layer knows it may need to make 265 * a copy of that block (if it's part of another, uncommitted 266 * transaction) before we do so. 267 */ 268 #define OCFS2_JOURNAL_ACCESS_CREATE 0 269 #define OCFS2_JOURNAL_ACCESS_WRITE 1 270 #define OCFS2_JOURNAL_ACCESS_UNDO 2 271 272 273 /* ocfs2_inode */ 274 int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, 275 struct buffer_head *bh, int type); 276 /* ocfs2_extent_block */ 277 int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, 278 struct buffer_head *bh, int type); 279 /* ocfs2_refcount_block */ 280 int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, 281 struct buffer_head *bh, int type); 282 /* ocfs2_group_desc */ 283 int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, 284 struct buffer_head *bh, int type); 285 /* ocfs2_xattr_block */ 286 int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, 287 struct buffer_head *bh, int type); 288 /* quota blocks */ 289 int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, 290 struct buffer_head *bh, int type); 291 /* dirblock */ 292 int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, 293 struct buffer_head *bh, int type); 294 /* ocfs2_dx_root_block */ 295 int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, 296 struct buffer_head *bh, int type); 297 /* ocfs2_dx_leaf */ 298 int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, 299 struct buffer_head *bh, int type); 300 /* Anything that has no ecc */ 301 int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, 302 struct buffer_head *bh, int type); 303 304 /* 305 * A word about the journal_access/journal_dirty "dance". It is 306 * entirely legal to journal_access a buffer more than once (as long 307 * as the access type is the same -- I'm not sure what will happen if 308 * access type is different but this should never happen anyway) It is 309 * also legal to journal_dirty a buffer more than once. In fact, you 310 * can even journal_access a buffer after you've done a 311 * journal_access/journal_dirty pair. The only thing you cannot do 312 * however, is journal_dirty a buffer which you haven't yet passed to 313 * journal_access at least once. 314 * 315 * That said, 99% of the time this doesn't matter and this is what the 316 * path looks like: 317 * 318 * <read a bh> 319 * ocfs2_journal_access(handle, bh, OCFS2_JOURNAL_ACCESS_WRITE); 320 * <modify the bh> 321 * ocfs2_journal_dirty(handle, bh); 322 */ 323 void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh); 324 325 /* 326 * Credit Macros: 327 * Convenience macros to calculate number of credits needed. 328 * 329 * For convenience sake, I have a set of macros here which calculate 330 * the *maximum* number of sectors which will be changed for various 331 * metadata updates. 332 */ 333 334 /* simple file updates like chmod, etc. */ 335 #define OCFS2_INODE_UPDATE_CREDITS 1 336 337 /* extended attribute block update */ 338 #define OCFS2_XATTR_BLOCK_UPDATE_CREDITS 1 339 340 /* Update of a single quota block */ 341 #define OCFS2_QUOTA_BLOCK_UPDATE_CREDITS 1 342 343 /* global quotafile inode update, data block */ 344 #define OCFS2_QINFO_WRITE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + \ 345 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 346 347 #define OCFS2_LOCAL_QINFO_WRITE_CREDITS OCFS2_QUOTA_BLOCK_UPDATE_CREDITS 348 /* 349 * The two writes below can accidentally see global info dirty due 350 * to set_info() quotactl so make them prepared for the writes. 351 */ 352 /* quota data block, global info */ 353 /* Write to local quota file */ 354 #define OCFS2_QWRITE_CREDITS (OCFS2_QINFO_WRITE_CREDITS + \ 355 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 356 357 /* global quota data block, local quota data block, global quota inode, 358 * global quota info */ 359 #define OCFS2_QSYNC_CREDITS (OCFS2_QINFO_WRITE_CREDITS + \ 360 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 361 362 static inline int ocfs2_quota_trans_credits(struct super_block *sb) 363 { 364 int credits = 0; 365 366 if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) 367 credits += OCFS2_QWRITE_CREDITS; 368 if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) 369 credits += OCFS2_QWRITE_CREDITS; 370 return credits; 371 } 372 373 /* group extend. inode update and last group update. */ 374 #define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 375 376 /* group add. inode update and the new group update. */ 377 #define OCFS2_GROUP_ADD_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 378 379 /* get one bit out of a suballocator: dinode + group descriptor + 380 * prev. group desc. if we relink. */ 381 #define OCFS2_SUBALLOC_ALLOC (3) 382 383 static inline int ocfs2_inline_to_extents_credits(struct super_block *sb) 384 { 385 return OCFS2_SUBALLOC_ALLOC + OCFS2_INODE_UPDATE_CREDITS + 386 ocfs2_quota_trans_credits(sb); 387 } 388 389 /* dinode + group descriptor update. We don't relink on free yet. */ 390 #define OCFS2_SUBALLOC_FREE (2) 391 392 #define OCFS2_TRUNCATE_LOG_UPDATE OCFS2_INODE_UPDATE_CREDITS 393 #define OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC (OCFS2_SUBALLOC_FREE \ 394 + OCFS2_TRUNCATE_LOG_UPDATE) 395 396 static inline int ocfs2_remove_extent_credits(struct super_block *sb) 397 { 398 return OCFS2_TRUNCATE_LOG_UPDATE + OCFS2_INODE_UPDATE_CREDITS + 399 ocfs2_quota_trans_credits(sb); 400 } 401 402 /* data block for new dir/symlink, allocation of directory block, dx_root 403 * update for free list */ 404 #define OCFS2_DIR_LINK_ADDITIONAL_CREDITS (1 + OCFS2_SUBALLOC_ALLOC + 1) 405 406 static inline int ocfs2_add_dir_index_credits(struct super_block *sb) 407 { 408 /* 1 block for index, 2 allocs (data, metadata), 1 clusters 409 * worth of blocks for initial extent. */ 410 return 1 + 2 * OCFS2_SUBALLOC_ALLOC + 411 ocfs2_clusters_to_blocks(sb, 1); 412 } 413 414 /* parent fe, parent block, new file entry, index leaf, inode alloc fe, inode 415 * alloc group descriptor + mkdir/symlink blocks + dir blocks + xattr 416 * blocks + quota update */ 417 static inline int ocfs2_mknod_credits(struct super_block *sb, int is_dir, 418 int xattr_credits) 419 { 420 int dir_credits = OCFS2_DIR_LINK_ADDITIONAL_CREDITS; 421 422 if (is_dir) 423 dir_credits += ocfs2_add_dir_index_credits(sb); 424 425 return 4 + OCFS2_SUBALLOC_ALLOC + dir_credits + xattr_credits + 426 ocfs2_quota_trans_credits(sb); 427 } 428 429 /* local alloc metadata change + main bitmap updates */ 430 #define OCFS2_WINDOW_MOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS \ 431 + OCFS2_SUBALLOC_ALLOC + OCFS2_SUBALLOC_FREE) 432 433 /* used when we don't need an allocation change for a dir extend. One 434 * for the dinode, one for the new block. */ 435 #define OCFS2_SIMPLE_DIR_EXTEND_CREDITS (2) 436 437 /* file update (nlink, etc) + directory mtime/ctime + dir entry block + quota 438 * update on dir + index leaf + dx root update for free list + 439 * previous dirblock update in the free list */ 440 static inline int ocfs2_link_credits(struct super_block *sb) 441 { 442 return 2 * OCFS2_INODE_UPDATE_CREDITS + 4 + 443 ocfs2_quota_trans_credits(sb); 444 } 445 446 /* inode + dir inode (if we unlink a dir), + dir entry block + orphan 447 * dir inode link + dir inode index leaf + dir index root */ 448 static inline int ocfs2_unlink_credits(struct super_block *sb) 449 { 450 /* The quota update from ocfs2_link_credits is unused here... */ 451 return 2 * OCFS2_INODE_UPDATE_CREDITS + 3 + ocfs2_link_credits(sb); 452 } 453 454 /* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry + 455 * inode alloc group descriptor + orphan dir index root + 456 * orphan dir index leaf */ 457 #define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 4) 458 459 /* dinode + orphan dir dinode + extent tree leaf block + orphan dir entry + 460 * orphan dir index root + orphan dir index leaf */ 461 #define OCFS2_INODE_ADD_TO_ORPHAN_CREDITS (2 * OCFS2_INODE_UPDATE_CREDITS + 4) 462 #define OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS OCFS2_INODE_ADD_TO_ORPHAN_CREDITS 463 464 /* dinode update, old dir dinode update, new dir dinode update, old 465 * dir dir entry, new dir dir entry, dir entry update for renaming 466 * directory + target unlink + 3 x dir index leaves */ 467 static inline int ocfs2_rename_credits(struct super_block *sb) 468 { 469 return 3 * OCFS2_INODE_UPDATE_CREDITS + 6 + ocfs2_unlink_credits(sb); 470 } 471 472 /* global bitmap dinode, group desc., relinked group, 473 * suballocator dinode, group desc., relinked group, 474 * dinode, xattr block */ 475 #define OCFS2_XATTR_BLOCK_CREATE_CREDITS (OCFS2_SUBALLOC_ALLOC * 2 + \ 476 + OCFS2_INODE_UPDATE_CREDITS \ 477 + OCFS2_XATTR_BLOCK_UPDATE_CREDITS) 478 479 /* inode update, removal of dx root block from allocator */ 480 #define OCFS2_DX_ROOT_REMOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + \ 481 OCFS2_SUBALLOC_FREE) 482 483 static inline int ocfs2_calc_dxi_expand_credits(struct super_block *sb) 484 { 485 int credits = 1 + OCFS2_SUBALLOC_ALLOC; 486 487 credits += ocfs2_clusters_to_blocks(sb, 1); 488 credits += ocfs2_quota_trans_credits(sb); 489 490 return credits; 491 } 492 493 /* inode update, new refcount block and its allocation credits. */ 494 #define OCFS2_REFCOUNT_TREE_CREATE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1 \ 495 + OCFS2_SUBALLOC_ALLOC) 496 497 /* inode and the refcount block update. */ 498 #define OCFS2_REFCOUNT_TREE_SET_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 499 500 /* 501 * inode and the refcount block update. 502 * It doesn't include the credits for sub alloc change. 503 * So if we need to free the bit, OCFS2_SUBALLOC_FREE needs to be added. 504 */ 505 #define OCFS2_REFCOUNT_TREE_REMOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 506 507 /* 2 metadata alloc, 2 new blocks and root refcount block */ 508 #define OCFS2_EXPAND_REFCOUNT_TREE_CREDITS (OCFS2_SUBALLOC_ALLOC * 2 + 3) 509 510 /* 511 * Please note that the caller must make sure that root_el is the root 512 * of extent tree. So for an inode, it should be &fe->id2.i_list. Otherwise 513 * the result may be wrong. 514 */ 515 static inline int ocfs2_calc_extend_credits(struct super_block *sb, 516 struct ocfs2_extent_list *root_el) 517 { 518 int bitmap_blocks, sysfile_bitmap_blocks, extent_blocks; 519 520 /* bitmap dinode, group desc. + relinked group. */ 521 bitmap_blocks = OCFS2_SUBALLOC_ALLOC; 522 523 /* we might need to shift tree depth so lets assume an 524 * absolute worst case of complete fragmentation. Even with 525 * that, we only need one update for the dinode, and then 526 * however many metadata chunks needed * a remaining suballoc 527 * alloc. */ 528 sysfile_bitmap_blocks = 1 + 529 (OCFS2_SUBALLOC_ALLOC - 1) * ocfs2_extend_meta_needed(root_el); 530 531 /* this does not include *new* metadata blocks, which are 532 * accounted for in sysfile_bitmap_blocks. root_el + 533 * prev. last_eb_blk + blocks along edge of tree. 534 * calc_symlink_credits passes because we just need 1 535 * credit for the dinode there. */ 536 extent_blocks = 1 + 1 + le16_to_cpu(root_el->l_tree_depth); 537 538 return bitmap_blocks + sysfile_bitmap_blocks + extent_blocks + 539 ocfs2_quota_trans_credits(sb); 540 } 541 542 static inline int ocfs2_calc_symlink_credits(struct super_block *sb) 543 { 544 int blocks = ocfs2_mknod_credits(sb, 0, 0); 545 546 /* links can be longer than one block so we may update many 547 * within our single allocated extent. */ 548 blocks += ocfs2_clusters_to_blocks(sb, 1); 549 550 return blocks + ocfs2_quota_trans_credits(sb); 551 } 552 553 static inline int ocfs2_calc_group_alloc_credits(struct super_block *sb, 554 unsigned int cpg) 555 { 556 int blocks; 557 int bitmap_blocks = OCFS2_SUBALLOC_ALLOC + 1; 558 /* parent inode update + new block group header + bitmap inode update 559 + bitmap blocks affected */ 560 blocks = 1 + 1 + 1 + bitmap_blocks; 561 return blocks; 562 } 563 564 /* 565 * Allocating a discontiguous block group requires the credits from 566 * ocfs2_calc_group_alloc_credits() as well as enough credits to fill 567 * the group descriptor's extent list. The caller already has started 568 * the transaction with ocfs2_calc_group_alloc_credits(). They extend 569 * it with these credits. 570 */ 571 static inline int ocfs2_calc_bg_discontig_credits(struct super_block *sb) 572 { 573 return ocfs2_extent_recs_per_gd(sb); 574 } 575 576 static inline int ocfs2_jbd2_inode_add_write(handle_t *handle, struct inode *inode, 577 loff_t start_byte, loff_t length) 578 { 579 return jbd2_journal_inode_ranged_write(handle, 580 &OCFS2_I(inode)->ip_jinode, 581 start_byte, length); 582 } 583 584 static inline int ocfs2_begin_ordered_truncate(struct inode *inode, 585 loff_t new_size) 586 { 587 return jbd2_journal_begin_ordered_truncate( 588 OCFS2_SB(inode->i_sb)->journal->j_journal, 589 &OCFS2_I(inode)->ip_jinode, 590 new_size); 591 } 592 593 static inline void ocfs2_update_inode_fsync_trans(handle_t *handle, 594 struct inode *inode, 595 int datasync) 596 { 597 struct ocfs2_inode_info *oi = OCFS2_I(inode); 598 599 if (!is_handle_aborted(handle)) { 600 oi->i_sync_tid = handle->h_transaction->t_tid; 601 if (datasync) 602 oi->i_datasync_tid = handle->h_transaction->t_tid; 603 } 604 } 605 606 #endif /* OCFS2_JOURNAL_H */ 607