1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/include/linux/nfs_fs.h 4 * 5 * Copyright (C) 1992 Rick Sladkey 6 * 7 * OS-specific nfs filesystem definitions and declarations 8 */ 9 #ifndef _LINUX_NFS_FS_H 10 #define _LINUX_NFS_FS_H 11 12 #include <uapi/linux/nfs_fs.h> 13 14 15 /* 16 * Enable dprintk() debugging support for nfs client. 17 */ 18 #ifdef CONFIG_NFS_DEBUG 19 # define NFS_DEBUG 20 #endif 21 22 #include <linux/in.h> 23 #include <linux/mm.h> 24 #include <linux/pagemap.h> 25 #include <linux/rbtree.h> 26 #include <linux/refcount.h> 27 #include <linux/rwsem.h> 28 #include <linux/wait.h> 29 30 #include <linux/sunrpc/debug.h> 31 #include <linux/sunrpc/auth.h> 32 #include <linux/sunrpc/clnt.h> 33 34 #include <linux/nfs.h> 35 #include <linux/nfs2.h> 36 #include <linux/nfs3.h> 37 #include <linux/nfs4.h> 38 #include <linux/nfs_xdr.h> 39 #include <linux/nfs_fs_sb.h> 40 41 #include <linux/mempool.h> 42 43 /* 44 * These are the default for number of transports to different server IPs 45 */ 46 #define NFS_MAX_TRANSPORTS 16 47 48 /* 49 * These are the default flags for swap requests 50 */ 51 #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) 52 53 /* 54 * Size of the NFS directory verifier 55 */ 56 #define NFS_DIR_VERIFIER_SIZE 2 57 58 /* 59 * NFSv3/v4 Access mode cache entry 60 */ 61 struct nfs_access_entry { 62 struct rb_node rb_node; 63 struct list_head lru; 64 kuid_t fsuid; 65 kgid_t fsgid; 66 struct group_info *group_info; 67 __u32 mask; 68 struct rcu_head rcu_head; 69 }; 70 71 struct nfs_lock_context { 72 refcount_t count; 73 struct list_head list; 74 struct nfs_open_context *open_context; 75 fl_owner_t lockowner; 76 atomic_t io_count; 77 struct rcu_head rcu_head; 78 }; 79 80 struct nfs4_state; 81 struct nfs_open_context { 82 struct nfs_lock_context lock_context; 83 fl_owner_t flock_owner; 84 struct dentry *dentry; 85 const struct cred *cred; 86 struct rpc_cred __rcu *ll_cred; /* low-level cred - use to check for expiry */ 87 struct nfs4_state *state; 88 fmode_t mode; 89 90 unsigned long flags; 91 #define NFS_CONTEXT_RESEND_WRITES (1) 92 #define NFS_CONTEXT_BAD (2) 93 #define NFS_CONTEXT_UNLOCK (3) 94 #define NFS_CONTEXT_FILE_OPEN (4) 95 int error; 96 97 struct list_head list; 98 struct nfs4_threshold *mdsthreshold; 99 struct rcu_head rcu_head; 100 }; 101 102 struct nfs_open_dir_context { 103 struct list_head list; 104 unsigned long attr_gencount; 105 __be32 verf[NFS_DIR_VERIFIER_SIZE]; 106 __u64 dir_cookie; 107 __u64 dup_cookie; 108 pgoff_t page_index; 109 signed char duped; 110 bool eof; 111 }; 112 113 /* 114 * NFSv4 delegation 115 */ 116 struct nfs_delegation; 117 118 struct posix_acl; 119 120 struct nfs4_xattr_cache; 121 122 /* 123 * nfs fs inode data in memory 124 */ 125 struct nfs_inode { 126 /* 127 * The 64bit 'inode number' 128 */ 129 __u64 fileid; 130 131 /* 132 * NFS file handle 133 */ 134 struct nfs_fh fh; 135 136 /* 137 * Various flags 138 */ 139 unsigned long flags; /* atomic bit ops */ 140 unsigned long cache_validity; /* bit mask */ 141 142 /* 143 * read_cache_jiffies is when we started read-caching this inode. 144 * attrtimeo is for how long the cached information is assumed 145 * to be valid. A successful attribute revalidation doubles 146 * attrtimeo (up to acregmax/acdirmax), a failure resets it to 147 * acregmin/acdirmin. 148 * 149 * We need to revalidate the cached attrs for this inode if 150 * 151 * jiffies - read_cache_jiffies >= attrtimeo 152 * 153 * Please note the comparison is greater than or equal 154 * so that zero timeout values can be specified. 155 */ 156 unsigned long read_cache_jiffies; 157 unsigned long attrtimeo; 158 unsigned long attrtimeo_timestamp; 159 160 unsigned long attr_gencount; 161 162 struct rb_root access_cache; 163 struct list_head access_cache_entry_lru; 164 struct list_head access_cache_inode_lru; 165 166 union { 167 /* Directory */ 168 struct { 169 /* "Generation counter" for the attribute cache. 170 * This is bumped whenever we update the metadata 171 * on the server. 172 */ 173 unsigned long cache_change_attribute; 174 /* 175 * This is the cookie verifier used for NFSv3 readdir 176 * operations 177 */ 178 __be32 cookieverf[NFS_DIR_VERIFIER_SIZE]; 179 /* Readers: in-flight sillydelete RPC calls */ 180 /* Writers: rmdir */ 181 struct rw_semaphore rmdir_sem; 182 }; 183 /* Regular file */ 184 struct { 185 atomic_long_t nrequests; 186 struct nfs_mds_commit_info commit_info; 187 struct mutex commit_mutex; 188 }; 189 }; 190 191 /* Open contexts for shared mmap writes */ 192 struct list_head open_files; 193 194 #if IS_ENABLED(CONFIG_NFS_V4) 195 struct nfs4_cached_acl *nfs4_acl; 196 /* NFSv4 state */ 197 struct list_head open_states; 198 struct nfs_delegation __rcu *delegation; 199 struct rw_semaphore rwsem; 200 201 /* pNFS layout information */ 202 struct pnfs_layout_hdr *layout; 203 #endif /* CONFIG_NFS_V4*/ 204 /* how many bytes have been written/read and how many bytes queued up */ 205 __u64 write_io; 206 __u64 read_io; 207 #ifdef CONFIG_NFS_FSCACHE 208 struct fscache_cookie *fscache; 209 #endif 210 struct inode vfs_inode; 211 212 #ifdef CONFIG_NFS_V4_2 213 struct nfs4_xattr_cache *xattr_cache; 214 #endif 215 }; 216 217 struct nfs4_copy_state { 218 struct list_head copies; 219 struct list_head src_copies; 220 nfs4_stateid stateid; 221 struct completion completion; 222 uint64_t count; 223 struct nfs_writeverf verf; 224 int error; 225 int flags; 226 struct nfs4_state *parent_src_state; 227 struct nfs4_state *parent_dst_state; 228 }; 229 230 /* 231 * Access bit flags 232 */ 233 #define NFS_ACCESS_READ 0x0001 234 #define NFS_ACCESS_LOOKUP 0x0002 235 #define NFS_ACCESS_MODIFY 0x0004 236 #define NFS_ACCESS_EXTEND 0x0008 237 #define NFS_ACCESS_DELETE 0x0010 238 #define NFS_ACCESS_EXECUTE 0x0020 239 #define NFS_ACCESS_XAREAD 0x0040 240 #define NFS_ACCESS_XAWRITE 0x0080 241 #define NFS_ACCESS_XALIST 0x0100 242 243 /* 244 * Cache validity bit flags 245 */ 246 #define NFS_INO_INVALID_DATA BIT(1) /* cached data is invalid */ 247 #define NFS_INO_INVALID_ATIME BIT(2) /* cached atime is invalid */ 248 #define NFS_INO_INVALID_ACCESS BIT(3) /* cached access cred invalid */ 249 #define NFS_INO_INVALID_ACL BIT(4) /* cached acls are invalid */ 250 #define NFS_INO_REVAL_PAGECACHE BIT(5) /* must revalidate pagecache */ 251 #define NFS_INO_REVAL_FORCED BIT(6) /* force revalidation ignoring a delegation */ 252 #define NFS_INO_INVALID_LABEL BIT(7) /* cached label is invalid */ 253 #define NFS_INO_INVALID_CHANGE BIT(8) /* cached change is invalid */ 254 #define NFS_INO_INVALID_CTIME BIT(9) /* cached ctime is invalid */ 255 #define NFS_INO_INVALID_MTIME BIT(10) /* cached mtime is invalid */ 256 #define NFS_INO_INVALID_SIZE BIT(11) /* cached size is invalid */ 257 #define NFS_INO_INVALID_OTHER BIT(12) /* other attrs are invalid */ 258 #define NFS_INO_DATA_INVAL_DEFER \ 259 BIT(13) /* Deferred cache invalidation */ 260 #define NFS_INO_INVALID_BLOCKS BIT(14) /* cached blocks are invalid */ 261 #define NFS_INO_INVALID_XATTR BIT(15) /* xattrs are invalid */ 262 #define NFS_INO_INVALID_NLINK BIT(16) /* cached nlinks is invalid */ 263 #define NFS_INO_INVALID_MODE BIT(17) /* cached mode is invalid */ 264 265 #define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \ 266 | NFS_INO_INVALID_CTIME \ 267 | NFS_INO_INVALID_MTIME \ 268 | NFS_INO_INVALID_SIZE \ 269 | NFS_INO_INVALID_NLINK \ 270 | NFS_INO_INVALID_MODE \ 271 | NFS_INO_INVALID_OTHER) /* inode metadata is invalid */ 272 273 /* 274 * Bit offsets in flags field 275 */ 276 #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ 277 #define NFS_INO_STALE (1) /* possible stale inode */ 278 #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ 279 #define NFS_INO_INVALIDATING (3) /* inode is being invalidated */ 280 #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ 281 #define NFS_INO_FORCE_READDIR (7) /* force readdirplus */ 282 #define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ 283 #define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */ 284 #define NFS_INO_LAYOUTSTATS (11) /* layoutstats inflight */ 285 #define NFS_INO_ODIRECT (12) /* I/O setting is O_DIRECT */ 286 287 static inline struct nfs_inode *NFS_I(const struct inode *inode) 288 { 289 return container_of(inode, struct nfs_inode, vfs_inode); 290 } 291 292 static inline struct nfs_server *NFS_SB(const struct super_block *s) 293 { 294 return (struct nfs_server *)(s->s_fs_info); 295 } 296 297 static inline struct nfs_fh *NFS_FH(const struct inode *inode) 298 { 299 return &NFS_I(inode)->fh; 300 } 301 302 static inline struct nfs_server *NFS_SERVER(const struct inode *inode) 303 { 304 return NFS_SB(inode->i_sb); 305 } 306 307 static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) 308 { 309 return NFS_SERVER(inode)->client; 310 } 311 312 static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) 313 { 314 return NFS_SERVER(inode)->nfs_client->rpc_ops; 315 } 316 317 static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) 318 { 319 struct nfs_server *nfss = NFS_SERVER(inode); 320 return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; 321 } 322 323 static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) 324 { 325 struct nfs_server *nfss = NFS_SERVER(inode); 326 return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; 327 } 328 329 static inline int NFS_STALE(const struct inode *inode) 330 { 331 return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); 332 } 333 334 static inline struct fscache_cookie *nfs_i_fscache(struct inode *inode) 335 { 336 #ifdef CONFIG_NFS_FSCACHE 337 return NFS_I(inode)->fscache; 338 #else 339 return NULL; 340 #endif 341 } 342 343 static inline __u64 NFS_FILEID(const struct inode *inode) 344 { 345 return NFS_I(inode)->fileid; 346 } 347 348 static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) 349 { 350 NFS_I(inode)->fileid = fileid; 351 } 352 353 static inline void nfs_mark_for_revalidate(struct inode *inode) 354 { 355 struct nfs_inode *nfsi = NFS_I(inode); 356 357 spin_lock(&inode->i_lock); 358 nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE 359 | NFS_INO_INVALID_ACCESS 360 | NFS_INO_INVALID_ACL 361 | NFS_INO_INVALID_CHANGE 362 | NFS_INO_INVALID_CTIME; 363 if (S_ISDIR(inode->i_mode)) 364 nfsi->cache_validity |= NFS_INO_INVALID_DATA; 365 spin_unlock(&inode->i_lock); 366 } 367 368 static inline int nfs_server_capable(struct inode *inode, int cap) 369 { 370 return NFS_SERVER(inode)->caps & cap; 371 } 372 373 /** 374 * nfs_save_change_attribute - Returns the inode attribute change cookie 375 * @dir - pointer to parent directory inode 376 * The "cache change attribute" is updated when we need to revalidate 377 * our dentry cache after a directory was seen to change on the server. 378 */ 379 static inline unsigned long nfs_save_change_attribute(struct inode *dir) 380 { 381 return NFS_I(dir)->cache_change_attribute; 382 } 383 384 /* 385 * linux/fs/nfs/inode.c 386 */ 387 extern int nfs_sync_mapping(struct address_space *mapping); 388 extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); 389 extern void nfs_zap_caches(struct inode *); 390 extern void nfs_set_inode_stale(struct inode *inode); 391 extern void nfs_invalidate_atime(struct inode *); 392 extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, 393 struct nfs_fattr *); 394 struct inode *nfs_ilookup(struct super_block *sb, struct nfs_fattr *, struct nfs_fh *); 395 extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); 396 extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); 397 extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); 398 extern int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fattr *fattr); 399 extern int nfs_getattr(struct user_namespace *, const struct path *, 400 struct kstat *, u32, unsigned int); 401 extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *, const struct cred *); 402 extern void nfs_access_set_mask(struct nfs_access_entry *, u32); 403 extern int nfs_permission(struct user_namespace *, struct inode *, int); 404 extern int nfs_open(struct inode *, struct file *); 405 extern int nfs_attribute_cache_expired(struct inode *inode); 406 extern int nfs_revalidate_inode(struct inode *inode, unsigned long flags); 407 extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); 408 extern int nfs_clear_invalid_mapping(struct address_space *mapping); 409 extern bool nfs_mapping_need_revalidate_inode(struct inode *inode); 410 extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); 411 extern int nfs_revalidate_mapping_rcu(struct inode *inode); 412 extern int nfs_setattr(struct user_namespace *, struct dentry *, struct iattr *); 413 extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, struct nfs_fattr *); 414 extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr); 415 extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); 416 extern void put_nfs_open_context(struct nfs_open_context *ctx); 417 extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, const struct cred *cred, fmode_t mode); 418 extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode, struct file *filp); 419 extern void nfs_inode_attach_open_context(struct nfs_open_context *ctx); 420 extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); 421 extern void nfs_file_clear_open_context(struct file *flip); 422 extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx); 423 extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx); 424 extern u64 nfs_compat_user_ino64(u64 fileid); 425 extern void nfs_fattr_init(struct nfs_fattr *fattr); 426 extern void nfs_fattr_set_barrier(struct nfs_fattr *fattr); 427 extern unsigned long nfs_inc_attr_generation_counter(void); 428 429 extern struct nfs_fattr *nfs_alloc_fattr(void); 430 extern struct nfs_fattr *nfs_alloc_fattr_with_label(struct nfs_server *server); 431 432 static inline void nfs4_label_free(struct nfs4_label *label) 433 { 434 #ifdef CONFIG_NFS_V4_SECURITY_LABEL 435 if (label) { 436 kfree(label->label); 437 kfree(label); 438 } 439 #endif 440 } 441 442 static inline void nfs_free_fattr(const struct nfs_fattr *fattr) 443 { 444 if (fattr) 445 nfs4_label_free(fattr->label); 446 kfree(fattr); 447 } 448 449 extern struct nfs_fh *nfs_alloc_fhandle(void); 450 451 static inline void nfs_free_fhandle(const struct nfs_fh *fh) 452 { 453 kfree(fh); 454 } 455 456 #ifdef NFS_DEBUG 457 extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh); 458 static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) 459 { 460 return _nfs_display_fhandle_hash(fh); 461 } 462 extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption); 463 #define nfs_display_fhandle(fh, caption) \ 464 do { \ 465 if (unlikely(nfs_debug & NFSDBG_FACILITY)) \ 466 _nfs_display_fhandle(fh, caption); \ 467 } while (0) 468 #else 469 static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) 470 { 471 return 0; 472 } 473 static inline void nfs_display_fhandle(const struct nfs_fh *fh, 474 const char *caption) 475 { 476 } 477 #endif 478 479 /* 480 * linux/fs/nfs/nfsroot.c 481 */ 482 extern int nfs_root_data(char **root_device, char **root_data); /*__init*/ 483 /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ 484 extern __be32 root_nfs_parse_addr(char *name); /*__init*/ 485 486 /* 487 * linux/fs/nfs/file.c 488 */ 489 extern const struct file_operations nfs_file_operations; 490 #if IS_ENABLED(CONFIG_NFS_V4) 491 extern const struct file_operations nfs4_file_operations; 492 #endif /* CONFIG_NFS_V4 */ 493 extern const struct address_space_operations nfs_file_aops; 494 extern const struct address_space_operations nfs_dir_aops; 495 496 static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) 497 { 498 return filp->private_data; 499 } 500 501 static inline const struct cred *nfs_file_cred(struct file *file) 502 { 503 if (file != NULL) { 504 struct nfs_open_context *ctx = 505 nfs_file_open_context(file); 506 if (ctx) 507 return ctx->cred; 508 } 509 return NULL; 510 } 511 512 /* 513 * linux/fs/nfs/direct.c 514 */ 515 extern ssize_t nfs_direct_IO(struct kiocb *, struct iov_iter *); 516 extern ssize_t nfs_file_direct_read(struct kiocb *iocb, 517 struct iov_iter *iter); 518 extern ssize_t nfs_file_direct_write(struct kiocb *iocb, 519 struct iov_iter *iter); 520 521 /* 522 * linux/fs/nfs/dir.c 523 */ 524 extern const struct file_operations nfs_dir_operations; 525 extern const struct dentry_operations nfs_dentry_operations; 526 527 extern void nfs_force_lookup_revalidate(struct inode *dir); 528 extern void nfs_set_verifier(struct dentry * dentry, unsigned long verf); 529 #if IS_ENABLED(CONFIG_NFS_V4) 530 extern void nfs_clear_verifier_delegated(struct inode *inode); 531 #endif /* IS_ENABLED(CONFIG_NFS_V4) */ 532 extern struct dentry *nfs_add_or_obtain(struct dentry *dentry, 533 struct nfs_fh *fh, struct nfs_fattr *fattr); 534 extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, 535 struct nfs_fattr *fattr); 536 extern int nfs_may_open(struct inode *inode, const struct cred *cred, int openflags); 537 extern void nfs_access_zap_cache(struct inode *inode); 538 extern int nfs_access_get_cached(struct inode *inode, const struct cred *cred, 539 u32 *mask, bool may_block); 540 541 /* 542 * linux/fs/nfs/symlink.c 543 */ 544 extern const struct inode_operations nfs_symlink_inode_operations; 545 546 /* 547 * linux/fs/nfs/sysctl.c 548 */ 549 #ifdef CONFIG_SYSCTL 550 extern int nfs_register_sysctl(void); 551 extern void nfs_unregister_sysctl(void); 552 #else 553 #define nfs_register_sysctl() 0 554 #define nfs_unregister_sysctl() do { } while(0) 555 #endif 556 557 /* 558 * linux/fs/nfs/namespace.c 559 */ 560 extern const struct inode_operations nfs_mountpoint_inode_operations; 561 extern const struct inode_operations nfs_referral_inode_operations; 562 extern int nfs_mountpoint_expiry_timeout; 563 extern void nfs_release_automount_timer(void); 564 565 /* 566 * linux/fs/nfs/unlink.c 567 */ 568 extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); 569 570 /* 571 * linux/fs/nfs/write.c 572 */ 573 extern int nfs_congestion_kb; 574 extern int nfs_writepage(struct page *page, struct writeback_control *wbc); 575 extern int nfs_writepages(struct address_space *, struct writeback_control *); 576 extern int nfs_flush_incompatible(struct file *file, struct page *page); 577 extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); 578 579 /* 580 * Try to write back everything synchronously (but check the 581 * return value!) 582 */ 583 extern int nfs_sync_inode(struct inode *inode); 584 extern int nfs_wb_all(struct inode *inode); 585 extern int nfs_wb_page(struct inode *inode, struct page *page); 586 extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); 587 extern int nfs_commit_inode(struct inode *, int); 588 extern struct nfs_commit_data *nfs_commitdata_alloc(bool never_fail); 589 extern void nfs_commit_free(struct nfs_commit_data *data); 590 bool nfs_commit_end(struct nfs_mds_commit_info *cinfo); 591 592 static inline int 593 nfs_have_writebacks(struct inode *inode) 594 { 595 if (S_ISREG(inode->i_mode)) 596 return atomic_long_read(&NFS_I(inode)->nrequests) != 0; 597 return 0; 598 } 599 600 /* 601 * linux/fs/nfs/read.c 602 */ 603 extern int nfs_readpage(struct file *, struct page *); 604 extern int nfs_readpages(struct file *, struct address_space *, 605 struct list_head *, unsigned); 606 607 /* 608 * inline functions 609 */ 610 611 static inline loff_t nfs_size_to_loff_t(__u64 size) 612 { 613 return min_t(u64, size, OFFSET_MAX); 614 } 615 616 static inline ino_t 617 nfs_fileid_to_ino_t(u64 fileid) 618 { 619 ino_t ino = (ino_t) fileid; 620 if (sizeof(ino_t) < sizeof(u64)) 621 ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; 622 return ino; 623 } 624 625 #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) 626 627 628 # undef ifdebug 629 # ifdef NFS_DEBUG 630 # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) 631 # define NFS_IFDEBUG(x) x 632 # else 633 # define ifdebug(fac) if (0) 634 # define NFS_IFDEBUG(x) 635 # endif 636 #endif 637