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 void ocfs2_recovery_disable_quota(struct ocfs2_super *osb); 152 153 int ocfs2_compute_replay_slots(struct ocfs2_super *osb); 154 void ocfs2_free_replay_slots(struct ocfs2_super *osb); 155 /* 156 * Journal Control: 157 * Initialize, Load, Shutdown, Wipe a journal. 158 * 159 * ocfs2_journal_alloc - Initialize skeleton for journal structure. 160 * ocfs2_journal_init - Initialize journal structures in the OSB. 161 * ocfs2_journal_load - Load the given journal off disk. Replay it if 162 * there's transactions still in there. 163 * ocfs2_journal_shutdown - Shutdown a journal, this will flush all 164 * uncommitted, uncheckpointed transactions. 165 * ocfs2_journal_wipe - Wipe transactions from a journal. Optionally 166 * zero out each block. 167 * ocfs2_recovery_thread - Perform recovery on a node. osb is our own osb. 168 * ocfs2_mark_dead_nodes - Start recovery on nodes we won't get a heartbeat 169 * event on. 170 * ocfs2_start_checkpoint - Kick the commit thread to do a checkpoint. 171 */ 172 void ocfs2_set_journal_params(struct ocfs2_super *osb); 173 int ocfs2_journal_alloc(struct ocfs2_super *osb); 174 int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty); 175 void ocfs2_journal_shutdown(struct ocfs2_super *osb); 176 int ocfs2_journal_wipe(struct ocfs2_journal *journal, 177 int full); 178 int ocfs2_journal_load(struct ocfs2_journal *journal, int local, 179 int replayed); 180 int ocfs2_check_journals_nolocks(struct ocfs2_super *osb); 181 void ocfs2_recovery_thread(struct ocfs2_super *osb, 182 int node_num); 183 int ocfs2_mark_dead_nodes(struct ocfs2_super *osb); 184 void ocfs2_complete_mount_recovery(struct ocfs2_super *osb); 185 void ocfs2_complete_quota_recovery(struct ocfs2_super *osb); 186 187 static inline void ocfs2_start_checkpoint(struct ocfs2_super *osb) 188 { 189 wake_up(&osb->checkpoint_event); 190 } 191 192 static inline void ocfs2_checkpoint_inode(struct inode *inode) 193 { 194 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 195 196 if (ocfs2_mount_local(osb)) 197 return; 198 199 if (!ocfs2_ci_fully_checkpointed(INODE_CACHE(inode))) { 200 /* WARNING: This only kicks off a single 201 * checkpoint. If someone races you and adds more 202 * metadata to the journal, you won't know, and will 203 * wind up waiting *a lot* longer than necessary. Right 204 * now we only use this in clear_inode so that's 205 * OK. */ 206 ocfs2_start_checkpoint(osb); 207 208 wait_event(osb->journal->j_checkpointed, 209 ocfs2_ci_fully_checkpointed(INODE_CACHE(inode))); 210 } 211 } 212 213 /* 214 * Transaction Handling: 215 * Manage the lifetime of a transaction handle. 216 * 217 * ocfs2_start_trans - Begin a transaction. Give it an upper estimate of 218 * the number of blocks that will be changed during 219 * this handle. 220 * ocfs2_commit_trans - Complete a handle. It might return -EIO if 221 * the journal was aborted. The majority of paths don't 222 * check the return value as an error there comes too 223 * late to do anything (and will be picked up in a 224 * later transaction). 225 * ocfs2_extend_trans - Extend a handle by nblocks credits. This may 226 * commit the handle to disk in the process, but will 227 * not release any locks taken during the transaction. 228 * ocfs2_journal_access* - Notify the handle that we want to journal this 229 * buffer. Will have to call ocfs2_journal_dirty once 230 * we've actually dirtied it. Type is one of . or . 231 * Always call the specific flavor of 232 * ocfs2_journal_access_*() unless you intend to 233 * manage the checksum by hand. 234 * ocfs2_journal_dirty - Mark a journalled buffer as having dirty data. 235 * ocfs2_jbd2_inode_add_write - Mark an inode with range so that its data goes 236 * out before the current handle commits. 237 */ 238 239 /* You must always start_trans with a number of buffs > 0, but it's 240 * perfectly legal to go through an entire transaction without having 241 * dirtied any buffers. */ 242 handle_t *ocfs2_start_trans(struct ocfs2_super *osb, 243 int max_buffs); 244 int ocfs2_commit_trans(struct ocfs2_super *osb, 245 handle_t *handle); 246 int ocfs2_extend_trans(handle_t *handle, int nblocks); 247 int ocfs2_assure_trans_credits(handle_t *handle, 248 int nblocks); 249 int ocfs2_allocate_extend_trans(handle_t *handle, 250 int thresh); 251 252 /* 253 * Define an arbitrary limit for the amount of data we will anticipate 254 * writing to any given transaction. For unbounded transactions such as 255 * fallocate(2) we can write more than this, but we always 256 * start off at the maximum transaction size and grow the transaction 257 * optimistically as we go. 258 */ 259 #define OCFS2_MAX_TRANS_DATA 64U 260 261 /* 262 * Create access is for when we get a newly created buffer and we're 263 * not gonna read it off disk, but rather fill it ourselves. Right 264 * now, we don't do anything special with this (it turns into a write 265 * request), but this is a good placeholder in case we do... 266 * 267 * Write access is for when we read a block off disk and are going to 268 * modify it. This way the journalling layer knows it may need to make 269 * a copy of that block (if it's part of another, uncommitted 270 * transaction) before we do so. 271 */ 272 #define OCFS2_JOURNAL_ACCESS_CREATE 0 273 #define OCFS2_JOURNAL_ACCESS_WRITE 1 274 #define OCFS2_JOURNAL_ACCESS_UNDO 2 275 276 277 /* ocfs2_inode */ 278 int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci, 279 struct buffer_head *bh, int type); 280 /* ocfs2_extent_block */ 281 int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci, 282 struct buffer_head *bh, int type); 283 /* ocfs2_refcount_block */ 284 int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci, 285 struct buffer_head *bh, int type); 286 /* ocfs2_group_desc */ 287 int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci, 288 struct buffer_head *bh, int type); 289 /* ocfs2_xattr_block */ 290 int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci, 291 struct buffer_head *bh, int type); 292 /* quota blocks */ 293 int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci, 294 struct buffer_head *bh, int type); 295 /* dirblock */ 296 int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci, 297 struct buffer_head *bh, int type); 298 /* ocfs2_dx_root_block */ 299 int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci, 300 struct buffer_head *bh, int type); 301 /* ocfs2_dx_leaf */ 302 int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci, 303 struct buffer_head *bh, int type); 304 /* Anything that has no ecc */ 305 int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci, 306 struct buffer_head *bh, int type); 307 308 /* 309 * A word about the journal_access/journal_dirty "dance". It is 310 * entirely legal to journal_access a buffer more than once (as long 311 * as the access type is the same -- I'm not sure what will happen if 312 * access type is different but this should never happen anyway) It is 313 * also legal to journal_dirty a buffer more than once. In fact, you 314 * can even journal_access a buffer after you've done a 315 * journal_access/journal_dirty pair. The only thing you cannot do 316 * however, is journal_dirty a buffer which you haven't yet passed to 317 * journal_access at least once. 318 * 319 * That said, 99% of the time this doesn't matter and this is what the 320 * path looks like: 321 * 322 * <read a bh> 323 * ocfs2_journal_access(handle, bh, OCFS2_JOURNAL_ACCESS_WRITE); 324 * <modify the bh> 325 * ocfs2_journal_dirty(handle, bh); 326 */ 327 void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh); 328 329 /* 330 * Credit Macros: 331 * Convenience macros to calculate number of credits needed. 332 * 333 * For convenience sake, I have a set of macros here which calculate 334 * the *maximum* number of sectors which will be changed for various 335 * metadata updates. 336 */ 337 338 /* simple file updates like chmod, etc. */ 339 #define OCFS2_INODE_UPDATE_CREDITS 1 340 341 /* extended attribute block update */ 342 #define OCFS2_XATTR_BLOCK_UPDATE_CREDITS 1 343 344 /* Update of a single quota block */ 345 #define OCFS2_QUOTA_BLOCK_UPDATE_CREDITS 1 346 347 /* global quotafile inode update, data block */ 348 #define OCFS2_QINFO_WRITE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + \ 349 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 350 351 #define OCFS2_LOCAL_QINFO_WRITE_CREDITS OCFS2_QUOTA_BLOCK_UPDATE_CREDITS 352 /* 353 * The two writes below can accidentally see global info dirty due 354 * to set_info() quotactl so make them prepared for the writes. 355 */ 356 /* quota data block, global info */ 357 /* Write to local quota file */ 358 #define OCFS2_QWRITE_CREDITS (OCFS2_QINFO_WRITE_CREDITS + \ 359 OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 360 361 /* global quota data block, local quota data block, global quota inode, 362 * global quota info */ 363 #define OCFS2_QSYNC_CREDITS (OCFS2_QINFO_WRITE_CREDITS + \ 364 2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS) 365 366 static inline int ocfs2_quota_trans_credits(struct super_block *sb) 367 { 368 int credits = 0; 369 370 if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) 371 credits += OCFS2_QWRITE_CREDITS; 372 if (OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) 373 credits += OCFS2_QWRITE_CREDITS; 374 return credits; 375 } 376 377 /* group extend. inode update and last group update. */ 378 #define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 379 380 /* group add. inode update and the new group update. */ 381 #define OCFS2_GROUP_ADD_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 382 383 /* get one bit out of a suballocator: dinode + group descriptor + 384 * prev. group desc. if we relink. */ 385 #define OCFS2_SUBALLOC_ALLOC (3) 386 387 static inline int ocfs2_inline_to_extents_credits(struct super_block *sb) 388 { 389 return OCFS2_SUBALLOC_ALLOC + OCFS2_INODE_UPDATE_CREDITS + 390 ocfs2_quota_trans_credits(sb); 391 } 392 393 /* dinode + group descriptor update. We don't relink on free yet. */ 394 #define OCFS2_SUBALLOC_FREE (2) 395 396 #define OCFS2_TRUNCATE_LOG_UPDATE OCFS2_INODE_UPDATE_CREDITS 397 #define OCFS2_TRUNCATE_LOG_FLUSH_ONE_REC (OCFS2_SUBALLOC_FREE \ 398 + OCFS2_TRUNCATE_LOG_UPDATE) 399 400 static inline int ocfs2_remove_extent_credits(struct super_block *sb) 401 { 402 return OCFS2_TRUNCATE_LOG_UPDATE + OCFS2_INODE_UPDATE_CREDITS + 403 ocfs2_quota_trans_credits(sb); 404 } 405 406 /* data block for new dir/symlink, allocation of directory block, dx_root 407 * update for free list */ 408 #define OCFS2_DIR_LINK_ADDITIONAL_CREDITS (1 + OCFS2_SUBALLOC_ALLOC + 1) 409 410 static inline int ocfs2_add_dir_index_credits(struct super_block *sb) 411 { 412 /* 1 block for index, 2 allocs (data, metadata), 1 clusters 413 * worth of blocks for initial extent. */ 414 return 1 + 2 * OCFS2_SUBALLOC_ALLOC + 415 ocfs2_clusters_to_blocks(sb, 1); 416 } 417 418 /* parent fe, parent block, new file entry, index leaf, inode alloc fe, inode 419 * alloc group descriptor + mkdir/symlink blocks + dir blocks + xattr 420 * blocks + quota update */ 421 static inline int ocfs2_mknod_credits(struct super_block *sb, int is_dir, 422 int xattr_credits) 423 { 424 int dir_credits = OCFS2_DIR_LINK_ADDITIONAL_CREDITS; 425 426 if (is_dir) 427 dir_credits += ocfs2_add_dir_index_credits(sb); 428 429 return 4 + OCFS2_SUBALLOC_ALLOC + dir_credits + xattr_credits + 430 ocfs2_quota_trans_credits(sb); 431 } 432 433 /* local alloc metadata change + main bitmap updates */ 434 #define OCFS2_WINDOW_MOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS \ 435 + OCFS2_SUBALLOC_ALLOC + OCFS2_SUBALLOC_FREE) 436 437 /* used when we don't need an allocation change for a dir extend. One 438 * for the dinode, one for the new block. */ 439 #define OCFS2_SIMPLE_DIR_EXTEND_CREDITS (2) 440 441 /* file update (nlink, etc) + directory mtime/ctime + dir entry block + quota 442 * update on dir + index leaf + dx root update for free list + 443 * previous dirblock update in the free list */ 444 static inline int ocfs2_link_credits(struct super_block *sb) 445 { 446 return 2 * OCFS2_INODE_UPDATE_CREDITS + 4 + 447 ocfs2_quota_trans_credits(sb); 448 } 449 450 /* inode + dir inode (if we unlink a dir), + dir entry block + orphan 451 * dir inode link + dir inode index leaf + dir index root */ 452 static inline int ocfs2_unlink_credits(struct super_block *sb) 453 { 454 /* The quota update from ocfs2_link_credits is unused here... */ 455 return 2 * OCFS2_INODE_UPDATE_CREDITS + 3 + ocfs2_link_credits(sb); 456 } 457 458 /* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry + 459 * inode alloc group descriptor + orphan dir index root + 460 * orphan dir index leaf */ 461 #define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 4) 462 463 /* dinode + orphan dir dinode + extent tree leaf block + orphan dir entry + 464 * orphan dir index root + orphan dir index leaf */ 465 #define OCFS2_INODE_ADD_TO_ORPHAN_CREDITS (2 * OCFS2_INODE_UPDATE_CREDITS + 4) 466 #define OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS OCFS2_INODE_ADD_TO_ORPHAN_CREDITS 467 468 /* dinode update, old dir dinode update, new dir dinode update, old 469 * dir dir entry, new dir dir entry, dir entry update for renaming 470 * directory + target unlink + 3 x dir index leaves */ 471 static inline int ocfs2_rename_credits(struct super_block *sb) 472 { 473 return 3 * OCFS2_INODE_UPDATE_CREDITS + 6 + ocfs2_unlink_credits(sb); 474 } 475 476 /* global bitmap dinode, group desc., relinked group, 477 * suballocator dinode, group desc., relinked group, 478 * dinode, xattr block */ 479 #define OCFS2_XATTR_BLOCK_CREATE_CREDITS (OCFS2_SUBALLOC_ALLOC * 2 + \ 480 + OCFS2_INODE_UPDATE_CREDITS \ 481 + OCFS2_XATTR_BLOCK_UPDATE_CREDITS) 482 483 /* inode update, removal of dx root block from allocator */ 484 #define OCFS2_DX_ROOT_REMOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + \ 485 OCFS2_SUBALLOC_FREE) 486 487 static inline int ocfs2_calc_dxi_expand_credits(struct super_block *sb) 488 { 489 int credits = 1 + OCFS2_SUBALLOC_ALLOC; 490 491 credits += ocfs2_clusters_to_blocks(sb, 1); 492 credits += ocfs2_quota_trans_credits(sb); 493 494 return credits; 495 } 496 497 /* inode update, new refcount block and its allocation credits. */ 498 #define OCFS2_REFCOUNT_TREE_CREATE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1 \ 499 + OCFS2_SUBALLOC_ALLOC) 500 501 /* inode and the refcount block update. */ 502 #define OCFS2_REFCOUNT_TREE_SET_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 503 504 /* 505 * inode and the refcount block update. 506 * It doesn't include the credits for sub alloc change. 507 * So if we need to free the bit, OCFS2_SUBALLOC_FREE needs to be added. 508 */ 509 #define OCFS2_REFCOUNT_TREE_REMOVE_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) 510 511 /* 2 metadata alloc, 2 new blocks and root refcount block */ 512 #define OCFS2_EXPAND_REFCOUNT_TREE_CREDITS (OCFS2_SUBALLOC_ALLOC * 2 + 3) 513 514 /* 515 * Please note that the caller must make sure that root_el is the root 516 * of extent tree. So for an inode, it should be &fe->id2.i_list. Otherwise 517 * the result may be wrong. 518 */ 519 static inline int ocfs2_calc_extend_credits(struct super_block *sb, 520 struct ocfs2_extent_list *root_el) 521 { 522 int bitmap_blocks, sysfile_bitmap_blocks, extent_blocks; 523 524 /* bitmap dinode, group desc. + relinked group. */ 525 bitmap_blocks = OCFS2_SUBALLOC_ALLOC; 526 527 /* we might need to shift tree depth so lets assume an 528 * absolute worst case of complete fragmentation. Even with 529 * that, we only need one update for the dinode, and then 530 * however many metadata chunks needed * a remaining suballoc 531 * alloc. */ 532 sysfile_bitmap_blocks = 1 + 533 (OCFS2_SUBALLOC_ALLOC - 1) * ocfs2_extend_meta_needed(root_el); 534 535 /* this does not include *new* metadata blocks, which are 536 * accounted for in sysfile_bitmap_blocks. root_el + 537 * prev. last_eb_blk + blocks along edge of tree. 538 * calc_symlink_credits passes because we just need 1 539 * credit for the dinode there. */ 540 extent_blocks = 1 + 1 + le16_to_cpu(root_el->l_tree_depth); 541 542 return bitmap_blocks + sysfile_bitmap_blocks + extent_blocks + 543 ocfs2_quota_trans_credits(sb); 544 } 545 546 static inline int ocfs2_calc_symlink_credits(struct super_block *sb) 547 { 548 int blocks = ocfs2_mknod_credits(sb, 0, 0); 549 550 /* links can be longer than one block so we may update many 551 * within our single allocated extent. */ 552 blocks += ocfs2_clusters_to_blocks(sb, 1); 553 554 return blocks + ocfs2_quota_trans_credits(sb); 555 } 556 557 static inline int ocfs2_calc_group_alloc_credits(struct super_block *sb, 558 unsigned int cpg) 559 { 560 int blocks; 561 int bitmap_blocks = OCFS2_SUBALLOC_ALLOC + 1; 562 /* parent inode update + new block group header + bitmap inode update 563 + bitmap blocks affected */ 564 blocks = 1 + 1 + 1 + bitmap_blocks; 565 return blocks; 566 } 567 568 /* 569 * Allocating a discontiguous block group requires the credits from 570 * ocfs2_calc_group_alloc_credits() as well as enough credits to fill 571 * the group descriptor's extent list. The caller already has started 572 * the transaction with ocfs2_calc_group_alloc_credits(). They extend 573 * it with these credits. 574 */ 575 static inline int ocfs2_calc_bg_discontig_credits(struct super_block *sb) 576 { 577 return ocfs2_extent_recs_per_gd(sb); 578 } 579 580 static inline int ocfs2_jbd2_inode_add_write(handle_t *handle, struct inode *inode, 581 loff_t start_byte, loff_t length) 582 { 583 return jbd2_journal_inode_ranged_write(handle, 584 &OCFS2_I(inode)->ip_jinode, 585 start_byte, length); 586 } 587 588 static inline int ocfs2_begin_ordered_truncate(struct inode *inode, 589 loff_t new_size) 590 { 591 return jbd2_journal_begin_ordered_truncate( 592 OCFS2_SB(inode->i_sb)->journal->j_journal, 593 &OCFS2_I(inode)->ip_jinode, 594 new_size); 595 } 596 597 static inline void ocfs2_update_inode_fsync_trans(handle_t *handle, 598 struct inode *inode, 599 int datasync) 600 { 601 struct ocfs2_inode_info *oi = OCFS2_I(inode); 602 603 if (!is_handle_aborted(handle)) { 604 oi->i_sync_tid = handle->h_transaction->t_tid; 605 if (datasync) 606 oi->i_datasync_tid = handle->h_transaction->t_tid; 607 } 608 } 609 610 #endif /* OCFS2_JOURNAL_H */ 611