1 /* 2 * This file is part of UBIFS. 3 * 4 * Copyright (C) 2006-2008 Nokia Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published by 8 * the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along with 16 * this program; if not, write to the Free Software Foundation, Inc., 51 17 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 * 19 * Authors: Artem Bityutskiy (Битюцкий Артём) 20 * Adrian Hunter 21 */ 22 23 #ifndef __UBIFS_DEBUG_H__ 24 #define __UBIFS_DEBUG_H__ 25 26 /* Checking helper functions */ 27 typedef int (*dbg_leaf_callback)(struct ubifs_info *c, 28 struct ubifs_zbranch *zbr, void *priv); 29 typedef int (*dbg_znode_callback)(struct ubifs_info *c, 30 struct ubifs_znode *znode, void *priv); 31 32 #ifdef CONFIG_UBIFS_FS_DEBUG 33 34 /** 35 * ubifs_debug_info - per-FS debugging information. 36 * @old_zroot: old index root - used by 'dbg_check_old_index()' 37 * @old_zroot_level: old index root level - used by 'dbg_check_old_index()' 38 * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()' 39 * @failure_mode: failure mode for recovery testing 40 * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls 41 * @fail_timeout: time in jiffies when delay of failure mode expires 42 * @fail_cnt: current number of calls to failure mode I/O functions 43 * @fail_cnt_max: number of calls by which to delay failure mode 44 * @chk_lpt_sz: used by LPT tree size checker 45 * @chk_lpt_sz2: used by LPT tree size checker 46 * @chk_lpt_wastage: used by LPT tree size checker 47 * @chk_lpt_lebs: used by LPT tree size checker 48 * @new_nhead_offs: used by LPT tree size checker 49 * @new_ihead_lnum: used by debugging to check @c->ihead_lnum 50 * @new_ihead_offs: used by debugging to check @c->ihead_offs 51 * 52 * @saved_lst: saved lprops statistics (used by 'dbg_save_space_info()') 53 * @saved_free: saved free space (used by 'dbg_save_space_info()') 54 * 55 * dfs_dir_name: name of debugfs directory containing this file-system's files 56 * dfs_dir: direntry object of the file-system debugfs directory 57 * dfs_dump_lprops: "dump lprops" debugfs knob 58 * dfs_dump_budg: "dump budgeting information" debugfs knob 59 * dfs_dump_tnc: "dump TNC" debugfs knob 60 */ 61 struct ubifs_debug_info { 62 struct ubifs_zbranch old_zroot; 63 int old_zroot_level; 64 unsigned long long old_zroot_sqnum; 65 int failure_mode; 66 int fail_delay; 67 unsigned long fail_timeout; 68 unsigned int fail_cnt; 69 unsigned int fail_cnt_max; 70 long long chk_lpt_sz; 71 long long chk_lpt_sz2; 72 long long chk_lpt_wastage; 73 int chk_lpt_lebs; 74 int new_nhead_offs; 75 int new_ihead_lnum; 76 int new_ihead_offs; 77 78 struct ubifs_lp_stats saved_lst; 79 long long saved_free; 80 81 char dfs_dir_name[100]; 82 struct dentry *dfs_dir; 83 struct dentry *dfs_dump_lprops; 84 struct dentry *dfs_dump_budg; 85 struct dentry *dfs_dump_tnc; 86 }; 87 88 #define ubifs_assert(expr) do { \ 89 if (unlikely(!(expr))) { \ 90 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \ 91 __func__, __LINE__, current->pid); \ 92 dbg_dump_stack(); \ 93 } \ 94 } while (0) 95 96 #define ubifs_assert_cmt_locked(c) do { \ 97 if (unlikely(down_write_trylock(&(c)->commit_sem))) { \ 98 up_write(&(c)->commit_sem); \ 99 printk(KERN_CRIT "commit lock is not locked!\n"); \ 100 ubifs_assert(0); \ 101 } \ 102 } while (0) 103 104 #define dbg_dump_stack() do { \ 105 if (!dbg_failure_mode) \ 106 dump_stack(); \ 107 } while (0) 108 109 /* Generic debugging messages */ 110 #define dbg_msg(fmt, ...) do { \ 111 spin_lock(&dbg_lock); \ 112 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \ 113 __func__, ##__VA_ARGS__); \ 114 spin_unlock(&dbg_lock); \ 115 } while (0) 116 117 #define dbg_do_msg(typ, fmt, ...) do { \ 118 if (ubifs_msg_flags & typ) \ 119 dbg_msg(fmt, ##__VA_ARGS__); \ 120 } while (0) 121 122 #define dbg_err(fmt, ...) do { \ 123 spin_lock(&dbg_lock); \ 124 ubifs_err(fmt, ##__VA_ARGS__); \ 125 spin_unlock(&dbg_lock); \ 126 } while (0) 127 128 const char *dbg_key_str0(const struct ubifs_info *c, 129 const union ubifs_key *key); 130 const char *dbg_key_str1(const struct ubifs_info *c, 131 const union ubifs_key *key); 132 133 /* 134 * DBGKEY macros require @dbg_lock to be held, which it is in the dbg message 135 * macros. 136 */ 137 #define DBGKEY(key) dbg_key_str0(c, (key)) 138 #define DBGKEY1(key) dbg_key_str1(c, (key)) 139 140 /* General messages */ 141 #define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__) 142 143 /* Additional journal messages */ 144 #define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__) 145 146 /* Additional TNC messages */ 147 #define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__) 148 149 /* Additional lprops messages */ 150 #define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__) 151 152 /* Additional LEB find messages */ 153 #define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__) 154 155 /* Additional mount messages */ 156 #define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__) 157 158 /* Additional I/O messages */ 159 #define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__) 160 161 /* Additional commit messages */ 162 #define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__) 163 164 /* Additional budgeting messages */ 165 #define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__) 166 167 /* Additional log messages */ 168 #define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__) 169 170 /* Additional gc messages */ 171 #define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__) 172 173 /* Additional scan messages */ 174 #define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__) 175 176 /* Additional recovery messages */ 177 #define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__) 178 179 /* 180 * Debugging message type flags. 181 * 182 * UBIFS_MSG_GEN: general messages 183 * UBIFS_MSG_JNL: journal messages 184 * UBIFS_MSG_MNT: mount messages 185 * UBIFS_MSG_CMT: commit messages 186 * UBIFS_MSG_FIND: LEB find messages 187 * UBIFS_MSG_BUDG: budgeting messages 188 * UBIFS_MSG_GC: garbage collection messages 189 * UBIFS_MSG_TNC: TNC messages 190 * UBIFS_MSG_LP: lprops messages 191 * UBIFS_MSG_IO: I/O messages 192 * UBIFS_MSG_LOG: log messages 193 * UBIFS_MSG_SCAN: scan messages 194 * UBIFS_MSG_RCVRY: recovery messages 195 */ 196 enum { 197 UBIFS_MSG_GEN = 0x1, 198 UBIFS_MSG_JNL = 0x2, 199 UBIFS_MSG_MNT = 0x4, 200 UBIFS_MSG_CMT = 0x8, 201 UBIFS_MSG_FIND = 0x10, 202 UBIFS_MSG_BUDG = 0x20, 203 UBIFS_MSG_GC = 0x40, 204 UBIFS_MSG_TNC = 0x80, 205 UBIFS_MSG_LP = 0x100, 206 UBIFS_MSG_IO = 0x200, 207 UBIFS_MSG_LOG = 0x400, 208 UBIFS_MSG_SCAN = 0x800, 209 UBIFS_MSG_RCVRY = 0x1000, 210 }; 211 212 /* 213 * Debugging check flags. 214 * 215 * UBIFS_CHK_GEN: general checks 216 * UBIFS_CHK_TNC: check TNC 217 * UBIFS_CHK_IDX_SZ: check index size 218 * UBIFS_CHK_ORPH: check orphans 219 * UBIFS_CHK_OLD_IDX: check the old index 220 * UBIFS_CHK_LPROPS: check lprops 221 * UBIFS_CHK_FS: check the file-system 222 */ 223 enum { 224 UBIFS_CHK_GEN = 0x1, 225 UBIFS_CHK_TNC = 0x2, 226 UBIFS_CHK_IDX_SZ = 0x4, 227 UBIFS_CHK_ORPH = 0x8, 228 UBIFS_CHK_OLD_IDX = 0x10, 229 UBIFS_CHK_LPROPS = 0x20, 230 UBIFS_CHK_FS = 0x40, 231 }; 232 233 /* 234 * Special testing flags. 235 * 236 * UBIFS_TST_FORCE_IN_THE_GAPS: force the use of in-the-gaps method 237 * UBIFS_TST_RCVRY: failure mode for recovery testing 238 */ 239 enum { 240 UBIFS_TST_FORCE_IN_THE_GAPS = 0x2, 241 UBIFS_TST_RCVRY = 0x4, 242 }; 243 244 extern spinlock_t dbg_lock; 245 246 extern unsigned int ubifs_msg_flags; 247 extern unsigned int ubifs_chk_flags; 248 extern unsigned int ubifs_tst_flags; 249 250 int ubifs_debugging_init(struct ubifs_info *c); 251 void ubifs_debugging_exit(struct ubifs_info *c); 252 253 /* Dump functions */ 254 const char *dbg_ntype(int type); 255 const char *dbg_cstate(int cmt_state); 256 const char *dbg_jhead(int jhead); 257 const char *dbg_get_key_dump(const struct ubifs_info *c, 258 const union ubifs_key *key); 259 void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode); 260 void dbg_dump_node(const struct ubifs_info *c, const void *node); 261 void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum, 262 int offs); 263 void dbg_dump_budget_req(const struct ubifs_budget_req *req); 264 void dbg_dump_lstats(const struct ubifs_lp_stats *lst); 265 void dbg_dump_budg(struct ubifs_info *c); 266 void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp); 267 void dbg_dump_lprops(struct ubifs_info *c); 268 void dbg_dump_lpt_info(struct ubifs_info *c); 269 void dbg_dump_leb(const struct ubifs_info *c, int lnum); 270 void dbg_dump_znode(const struct ubifs_info *c, 271 const struct ubifs_znode *znode); 272 void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat); 273 void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, 274 struct ubifs_nnode *parent, int iip); 275 void dbg_dump_tnc(struct ubifs_info *c); 276 void dbg_dump_index(struct ubifs_info *c); 277 void dbg_dump_lpt_lebs(const struct ubifs_info *c); 278 279 int dbg_walk_index(struct ubifs_info *c, dbg_leaf_callback leaf_cb, 280 dbg_znode_callback znode_cb, void *priv); 281 282 /* Checking functions */ 283 void dbg_save_space_info(struct ubifs_info *c); 284 int dbg_check_space_info(struct ubifs_info *c); 285 int dbg_check_lprops(struct ubifs_info *c); 286 int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot); 287 int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot); 288 int dbg_check_cats(struct ubifs_info *c); 289 int dbg_check_ltab(struct ubifs_info *c); 290 int dbg_chk_lpt_free_spc(struct ubifs_info *c); 291 int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len); 292 int dbg_check_synced_i_size(struct inode *inode); 293 int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir); 294 int dbg_check_tnc(struct ubifs_info *c, int extra); 295 int dbg_check_idx_size(struct ubifs_info *c, long long idx_size); 296 int dbg_check_filesystem(struct ubifs_info *c); 297 void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat, 298 int add_pos); 299 int dbg_check_lpt_nodes(struct ubifs_info *c, struct ubifs_cnode *cnode, 300 int row, int col); 301 int dbg_check_inode_size(struct ubifs_info *c, const struct inode *inode, 302 loff_t size); 303 int dbg_check_data_nodes_order(struct ubifs_info *c, struct list_head *head); 304 int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head); 305 306 /* Force the use of in-the-gaps method for testing */ 307 308 #define dbg_force_in_the_gaps_enabled \ 309 (ubifs_tst_flags & UBIFS_TST_FORCE_IN_THE_GAPS) 310 311 int dbg_force_in_the_gaps(void); 312 313 /* Failure mode for recovery testing */ 314 315 #define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY) 316 317 #ifndef UBIFS_DBG_PRESERVE_UBI 318 319 #define ubi_leb_read dbg_leb_read 320 #define ubi_leb_write dbg_leb_write 321 #define ubi_leb_change dbg_leb_change 322 #define ubi_leb_erase dbg_leb_erase 323 #define ubi_leb_unmap dbg_leb_unmap 324 #define ubi_is_mapped dbg_is_mapped 325 #define ubi_leb_map dbg_leb_map 326 327 #endif 328 329 int dbg_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset, 330 int len, int check); 331 int dbg_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf, 332 int offset, int len, int dtype); 333 int dbg_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf, 334 int len, int dtype); 335 int dbg_leb_erase(struct ubi_volume_desc *desc, int lnum); 336 int dbg_leb_unmap(struct ubi_volume_desc *desc, int lnum); 337 int dbg_is_mapped(struct ubi_volume_desc *desc, int lnum); 338 int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype); 339 340 static inline int dbg_read(struct ubi_volume_desc *desc, int lnum, char *buf, 341 int offset, int len) 342 { 343 return dbg_leb_read(desc, lnum, buf, offset, len, 0); 344 } 345 346 static inline int dbg_write(struct ubi_volume_desc *desc, int lnum, 347 const void *buf, int offset, int len) 348 { 349 return dbg_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN); 350 } 351 352 static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, 353 const void *buf, int len) 354 { 355 return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN); 356 } 357 358 /* Debugfs-related stuff */ 359 int dbg_debugfs_init(void); 360 void dbg_debugfs_exit(void); 361 int dbg_debugfs_init_fs(struct ubifs_info *c); 362 void dbg_debugfs_exit_fs(struct ubifs_info *c); 363 364 #else /* !CONFIG_UBIFS_FS_DEBUG */ 365 366 /* Use "if (0)" to make compiler check arguments even if debugging is off */ 367 #define ubifs_assert(expr) do { \ 368 if (0 && (expr)) \ 369 printk(KERN_CRIT "UBIFS assert failed in %s at %u (pid %d)\n", \ 370 __func__, __LINE__, current->pid); \ 371 } while (0) 372 373 #define dbg_err(fmt, ...) do { \ 374 if (0) \ 375 ubifs_err(fmt, ##__VA_ARGS__); \ 376 } while (0) 377 378 #define dbg_msg(fmt, ...) do { \ 379 if (0) \ 380 printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \ 381 current->pid, __func__, ##__VA_ARGS__); \ 382 } while (0) 383 384 #define dbg_dump_stack() 385 #define ubifs_assert_cmt_locked(c) 386 387 #define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 388 #define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 389 #define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 390 #define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 391 #define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 392 #define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 393 #define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 394 #define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 395 #define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 396 #define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 397 #define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 398 #define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 399 #define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__) 400 401 #define DBGKEY(key) ((char *)(key)) 402 #define DBGKEY1(key) ((char *)(key)) 403 404 static inline int ubifs_debugging_init(struct ubifs_info *c) { return 0; } 405 static inline void ubifs_debugging_exit(struct ubifs_info *c) { return; } 406 static inline const char *dbg_ntype(int type) { return ""; } 407 static inline const char *dbg_cstate(int cmt_state) { return ""; } 408 static inline const char *dbg_jhead(int jhead) { return ""; } 409 static inline const char * 410 dbg_get_key_dump(const struct ubifs_info *c, 411 const union ubifs_key *key) { return ""; } 412 static inline void dbg_dump_inode(const struct ubifs_info *c, 413 const struct inode *inode) { return; } 414 static inline void dbg_dump_node(const struct ubifs_info *c, 415 const void *node) { return; } 416 static inline void dbg_dump_lpt_node(const struct ubifs_info *c, 417 void *node, int lnum, 418 int offs) { return; } 419 static inline void 420 dbg_dump_budget_req(const struct ubifs_budget_req *req) { return; } 421 static inline void 422 dbg_dump_lstats(const struct ubifs_lp_stats *lst) { return; } 423 static inline void dbg_dump_budg(struct ubifs_info *c) { return; } 424 static inline void dbg_dump_lprop(const struct ubifs_info *c, 425 const struct ubifs_lprops *lp) { return; } 426 static inline void dbg_dump_lprops(struct ubifs_info *c) { return; } 427 static inline void dbg_dump_lpt_info(struct ubifs_info *c) { return; } 428 static inline void dbg_dump_leb(const struct ubifs_info *c, 429 int lnum) { return; } 430 static inline void 431 dbg_dump_znode(const struct ubifs_info *c, 432 const struct ubifs_znode *znode) { return; } 433 static inline void dbg_dump_heap(struct ubifs_info *c, 434 struct ubifs_lpt_heap *heap, 435 int cat) { return; } 436 static inline void dbg_dump_pnode(struct ubifs_info *c, 437 struct ubifs_pnode *pnode, 438 struct ubifs_nnode *parent, 439 int iip) { return; } 440 static inline void dbg_dump_tnc(struct ubifs_info *c) { return; } 441 static inline void dbg_dump_index(struct ubifs_info *c) { return; } 442 static inline void dbg_dump_lpt_lebs(const struct ubifs_info *c) { return; } 443 444 static inline int dbg_walk_index(struct ubifs_info *c, 445 dbg_leaf_callback leaf_cb, 446 dbg_znode_callback znode_cb, 447 void *priv) { return 0; } 448 static inline void dbg_save_space_info(struct ubifs_info *c) { return; } 449 static inline int dbg_check_space_info(struct ubifs_info *c) { return 0; } 450 static inline int dbg_check_lprops(struct ubifs_info *c) { return 0; } 451 static inline int 452 dbg_old_index_check_init(struct ubifs_info *c, 453 struct ubifs_zbranch *zroot) { return 0; } 454 static inline int 455 dbg_check_old_index(struct ubifs_info *c, 456 struct ubifs_zbranch *zroot) { return 0; } 457 static inline int dbg_check_cats(struct ubifs_info *c) { return 0; } 458 static inline int dbg_check_ltab(struct ubifs_info *c) { return 0; } 459 static inline int dbg_chk_lpt_free_spc(struct ubifs_info *c) { return 0; } 460 static inline int dbg_chk_lpt_sz(struct ubifs_info *c, 461 int action, int len) { return 0; } 462 static inline int dbg_check_synced_i_size(struct inode *inode) { return 0; } 463 static inline int dbg_check_dir_size(struct ubifs_info *c, 464 const struct inode *dir) { return 0; } 465 static inline int dbg_check_tnc(struct ubifs_info *c, int extra) { return 0; } 466 static inline int dbg_check_idx_size(struct ubifs_info *c, 467 long long idx_size) { return 0; } 468 static inline int dbg_check_filesystem(struct ubifs_info *c) { return 0; } 469 static inline void dbg_check_heap(struct ubifs_info *c, 470 struct ubifs_lpt_heap *heap, 471 int cat, int add_pos) { return; } 472 static inline int dbg_check_lpt_nodes(struct ubifs_info *c, 473 struct ubifs_cnode *cnode, int row, int col) { return 0; } 474 static inline int dbg_check_inode_size(struct ubifs_info *c, 475 const struct inode *inode, 476 loff_t size) { return 0; } 477 static inline int 478 dbg_check_data_nodes_order(struct ubifs_info *c, 479 struct list_head *head) { return 0; } 480 static inline int 481 dbg_check_nondata_nodes_order(struct ubifs_info *c, 482 struct list_head *head) { return 0; } 483 484 static inline int dbg_force_in_the_gaps(void) { return 0; } 485 #define dbg_force_in_the_gaps_enabled 0 486 #define dbg_failure_mode 0 487 488 static inline int dbg_debugfs_init(void) { return 0; } 489 static inline void dbg_debugfs_exit(void) { return; } 490 static inline int dbg_debugfs_init_fs(struct ubifs_info *c) { return 0; } 491 static inline int dbg_debugfs_exit_fs(struct ubifs_info *c) { return 0; } 492 493 #endif /* !CONFIG_UBIFS_FS_DEBUG */ 494 #endif /* !__UBIFS_DEBUG_H__ */ 495