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1 | /* |
2 | * linux/include/linux/nfs_fs.h |
3 | * |
4 | * Copyright (C) 1992 Rick Sladkey |
5 | * |
6 | * OS-specific nfs filesystem definitions and declarations |
7 | */ |
8 | |
9 | #ifndef _LINUX_NFS_FS_H |
10 | #define _LINUX_NFS_FS_H |
11 | |
12 | #include <linux/magic.h> |
13 | |
14 | /* Default timeout values */ |
15 | #define NFS_DEF_UDP_TIMEO (11) |
16 | #define NFS_DEF_UDP_RETRANS (3) |
17 | #define NFS_DEF_TCP_TIMEO (600) |
18 | #define NFS_DEF_TCP_RETRANS (2) |
19 | |
20 | #define NFS_MAX_UDP_TIMEOUT (60*HZ) |
21 | #define NFS_MAX_TCP_TIMEOUT (600*HZ) |
22 | |
23 | #define NFS_DEF_ACREGMIN (3) |
24 | #define NFS_DEF_ACREGMAX (60) |
25 | #define NFS_DEF_ACDIRMIN (30) |
26 | #define NFS_DEF_ACDIRMAX (60) |
27 | |
28 | /* |
29 | * When flushing a cluster of dirty pages, there can be different |
30 | * strategies: |
31 | */ |
32 | #define FLUSH_SYNC 1 /* file being synced, or contention */ |
33 | #define FLUSH_STABLE 4 /* commit to stable storage */ |
34 | #define FLUSH_LOWPRI 8 /* low priority background flush */ |
35 | #define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ |
36 | #define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */ |
37 | #define FLUSH_INVALIDATE 64 /* Invalidate the page cache */ |
38 | #define FLUSH_NOWRITEPAGE 128 /* Don't call writepage() */ |
39 | |
40 | #ifdef __KERNEL__ |
41 | |
42 | #include <linux/in.h> |
43 | #include <linux/mm.h> |
44 | #include <linux/pagemap.h> |
45 | #include <linux/rbtree.h> |
46 | #include <linux/rwsem.h> |
47 | #include <linux/wait.h> |
48 | |
49 | #include <linux/sunrpc/debug.h> |
50 | #include <linux/sunrpc/auth.h> |
51 | #include <linux/sunrpc/clnt.h> |
52 | |
53 | #include <linux/nfs.h> |
54 | #include <linux/nfs2.h> |
55 | #include <linux/nfs3.h> |
56 | #include <linux/nfs4.h> |
57 | #include <linux/nfs_xdr.h> |
58 | #include <linux/nfs_fs_sb.h> |
59 | |
60 | #include <linux/mempool.h> |
61 | |
62 | /* |
63 | * These are the default flags for swap requests |
64 | */ |
65 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) |
66 | |
67 | /* |
68 | * NFSv3/v4 Access mode cache entry |
69 | */ |
70 | struct nfs_access_entry { |
71 | struct rb_node rb_node; |
72 | struct list_head lru; |
73 | unsigned long jiffies; |
74 | struct rpc_cred * cred; |
75 | int mask; |
76 | }; |
77 | |
78 | struct nfs4_state; |
79 | struct nfs_open_context { |
80 | atomic_t count; |
81 | struct path path; |
82 | struct rpc_cred *cred; |
83 | struct nfs4_state *state; |
84 | fl_owner_t lockowner; |
85 | fmode_t mode; |
86 | |
87 | unsigned long flags; |
88 | #define NFS_CONTEXT_ERROR_WRITE (0) |
89 | int error; |
90 | |
91 | struct list_head list; |
92 | |
93 | __u64 dir_cookie; |
94 | }; |
95 | |
96 | /* |
97 | * NFSv4 delegation |
98 | */ |
99 | struct nfs_delegation; |
100 | |
101 | struct posix_acl; |
102 | |
103 | /* |
104 | * nfs fs inode data in memory |
105 | */ |
106 | struct nfs_inode { |
107 | /* |
108 | * The 64bit 'inode number' |
109 | */ |
110 | __u64 fileid; |
111 | |
112 | /* |
113 | * NFS file handle |
114 | */ |
115 | struct nfs_fh fh; |
116 | |
117 | /* |
118 | * Various flags |
119 | */ |
120 | unsigned long flags; /* atomic bit ops */ |
121 | unsigned long cache_validity; /* bit mask */ |
122 | |
123 | /* |
124 | * read_cache_jiffies is when we started read-caching this inode. |
125 | * attrtimeo is for how long the cached information is assumed |
126 | * to be valid. A successful attribute revalidation doubles |
127 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to |
128 | * acregmin/acdirmin. |
129 | * |
130 | * We need to revalidate the cached attrs for this inode if |
131 | * |
132 | * jiffies - read_cache_jiffies >= attrtimeo |
133 | * |
134 | * Please note the comparison is greater than or equal |
135 | * so that zero timeout values can be specified. |
136 | */ |
137 | unsigned long read_cache_jiffies; |
138 | unsigned long attrtimeo; |
139 | unsigned long attrtimeo_timestamp; |
140 | __u64 change_attr; /* v4 only */ |
141 | |
142 | unsigned long attr_gencount; |
143 | /* "Generation counter" for the attribute cache. This is |
144 | * bumped whenever we update the metadata on the |
145 | * server. |
146 | */ |
147 | unsigned long cache_change_attribute; |
148 | |
149 | struct rb_root access_cache; |
150 | struct list_head access_cache_entry_lru; |
151 | struct list_head access_cache_inode_lru; |
152 | #ifdef CONFIG_NFS_V3_ACL |
153 | struct posix_acl *acl_access; |
154 | struct posix_acl *acl_default; |
155 | #endif |
156 | |
157 | /* |
158 | * This is the cookie verifier used for NFSv3 readdir |
159 | * operations |
160 | */ |
161 | __be32 cookieverf[2]; |
162 | |
163 | /* |
164 | * This is the list of dirty unwritten pages. |
165 | */ |
166 | struct radix_tree_root nfs_page_tree; |
167 | |
168 | unsigned long npages; |
169 | |
170 | /* Open contexts for shared mmap writes */ |
171 | struct list_head open_files; |
172 | |
173 | /* Number of in-flight sillydelete RPC calls */ |
174 | atomic_t silly_count; |
175 | /* List of deferred sillydelete requests */ |
176 | struct hlist_head silly_list; |
177 | wait_queue_head_t waitqueue; |
178 | |
179 | #ifdef CONFIG_NFS_V4 |
180 | struct nfs4_cached_acl *nfs4_acl; |
181 | /* NFSv4 state */ |
182 | struct list_head open_states; |
183 | struct nfs_delegation *delegation; |
184 | fmode_t delegation_state; |
185 | struct rw_semaphore rwsem; |
186 | #endif /* CONFIG_NFS_V4*/ |
187 | #ifdef CONFIG_NFS_FSCACHE |
188 | struct fscache_cookie *fscache; |
189 | #endif |
190 | struct inode vfs_inode; |
191 | }; |
192 | |
193 | /* |
194 | * Cache validity bit flags |
195 | */ |
196 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
197 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ |
198 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ |
199 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ |
200 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ |
201 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ |
202 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
203 | |
204 | /* |
205 | * Bit offsets in flags field |
206 | */ |
207 | #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ |
208 | #define NFS_INO_STALE (1) /* possible stale inode */ |
209 | #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ |
210 | #define NFS_INO_MOUNTPOINT (3) /* inode is remote mountpoint */ |
211 | #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ |
212 | #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ |
213 | #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ |
214 | |
215 | static inline struct nfs_inode *NFS_I(const struct inode *inode) |
216 | { |
217 | return container_of(inode, struct nfs_inode, vfs_inode); |
218 | } |
219 | |
220 | static inline struct nfs_server *NFS_SB(const struct super_block *s) |
221 | { |
222 | return (struct nfs_server *)(s->s_fs_info); |
223 | } |
224 | |
225 | static inline struct nfs_fh *NFS_FH(const struct inode *inode) |
226 | { |
227 | return &NFS_I(inode)->fh; |
228 | } |
229 | |
230 | static inline struct nfs_server *NFS_SERVER(const struct inode *inode) |
231 | { |
232 | return NFS_SB(inode->i_sb); |
233 | } |
234 | |
235 | static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) |
236 | { |
237 | return NFS_SERVER(inode)->client; |
238 | } |
239 | |
240 | static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) |
241 | { |
242 | return NFS_SERVER(inode)->nfs_client->rpc_ops; |
243 | } |
244 | |
245 | static inline __be32 *NFS_COOKIEVERF(const struct inode *inode) |
246 | { |
247 | return NFS_I(inode)->cookieverf; |
248 | } |
249 | |
250 | static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) |
251 | { |
252 | struct nfs_server *nfss = NFS_SERVER(inode); |
253 | return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; |
254 | } |
255 | |
256 | static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) |
257 | { |
258 | struct nfs_server *nfss = NFS_SERVER(inode); |
259 | return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; |
260 | } |
261 | |
262 | static inline int NFS_STALE(const struct inode *inode) |
263 | { |
264 | return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
265 | } |
266 | |
267 | static inline int NFS_FSCACHE(const struct inode *inode) |
268 | { |
269 | return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags); |
270 | } |
271 | |
272 | static inline __u64 NFS_FILEID(const struct inode *inode) |
273 | { |
274 | return NFS_I(inode)->fileid; |
275 | } |
276 | |
277 | static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) |
278 | { |
279 | NFS_I(inode)->fileid = fileid; |
280 | } |
281 | |
282 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
283 | { |
284 | struct nfs_inode *nfsi = NFS_I(inode); |
285 | |
286 | spin_lock(&inode->i_lock); |
287 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
288 | if (S_ISDIR(inode->i_mode)) |
289 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
290 | spin_unlock(&inode->i_lock); |
291 | } |
292 | |
293 | static inline int nfs_server_capable(struct inode *inode, int cap) |
294 | { |
295 | return NFS_SERVER(inode)->caps & cap; |
296 | } |
297 | |
298 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) |
299 | { |
300 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); |
301 | } |
302 | |
303 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
304 | { |
305 | dentry->d_time = verf; |
306 | } |
307 | |
308 | /** |
309 | * nfs_save_change_attribute - Returns the inode attribute change cookie |
310 | * @dir - pointer to parent directory inode |
311 | * The "change attribute" is updated every time we finish an operation |
312 | * that will result in a metadata change on the server. |
313 | */ |
314 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
315 | { |
316 | return NFS_I(dir)->cache_change_attribute; |
317 | } |
318 | |
319 | /** |
320 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
321 | * @dir - pointer to parent directory inode |
322 | * @chattr - previously saved change attribute |
323 | * Return "false" if the verifiers doesn't match the change attribute. |
324 | * This would usually indicate that the directory contents have changed on |
325 | * the server, and that any dentries need revalidating. |
326 | */ |
327 | static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) |
328 | { |
329 | return chattr == NFS_I(dir)->cache_change_attribute; |
330 | } |
331 | |
332 | /* |
333 | * linux/fs/nfs/inode.c |
334 | */ |
335 | extern int nfs_sync_mapping(struct address_space *mapping); |
336 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
337 | extern void nfs_zap_caches(struct inode *); |
338 | extern void nfs_invalidate_atime(struct inode *); |
339 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
340 | struct nfs_fattr *); |
341 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); |
342 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
343 | extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); |
344 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
345 | extern int nfs_permission(struct inode *, int); |
346 | extern int nfs_open(struct inode *, struct file *); |
347 | extern int nfs_release(struct inode *, struct file *); |
348 | extern int nfs_attribute_timeout(struct inode *inode); |
349 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); |
350 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); |
351 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
352 | extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping); |
353 | extern int nfs_setattr(struct dentry *, struct iattr *); |
354 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
355 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
356 | extern void put_nfs_open_context(struct nfs_open_context *ctx); |
357 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); |
358 | extern u64 nfs_compat_user_ino64(u64 fileid); |
359 | extern void nfs_fattr_init(struct nfs_fattr *fattr); |
360 | |
361 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ |
362 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
363 | extern unsigned long nfs_inc_attr_generation_counter(void); |
364 | |
365 | /* |
366 | * linux/fs/nfs/file.c |
367 | */ |
368 | extern const struct inode_operations nfs_file_inode_operations; |
369 | #ifdef CONFIG_NFS_V3 |
370 | extern const struct inode_operations nfs3_file_inode_operations; |
371 | #endif /* CONFIG_NFS_V3 */ |
372 | extern const struct file_operations nfs_file_operations; |
373 | extern const struct address_space_operations nfs_file_aops; |
374 | |
375 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
376 | { |
377 | return filp->private_data; |
378 | } |
379 | |
380 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
381 | { |
382 | if (file != NULL) { |
383 | struct nfs_open_context *ctx = |
384 | nfs_file_open_context(file); |
385 | if (ctx) |
386 | return ctx->cred; |
387 | } |
388 | return NULL; |
389 | } |
390 | |
391 | /* |
392 | * linux/fs/nfs/xattr.c |
393 | */ |
394 | #ifdef CONFIG_NFS_V3_ACL |
395 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); |
396 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); |
397 | extern int nfs3_setxattr(struct dentry *, const char *, |
398 | const void *, size_t, int); |
399 | extern int nfs3_removexattr (struct dentry *, const char *name); |
400 | #else |
401 | # define nfs3_listxattr NULL |
402 | # define nfs3_getxattr NULL |
403 | # define nfs3_setxattr NULL |
404 | # define nfs3_removexattr NULL |
405 | #endif |
406 | |
407 | /* |
408 | * linux/fs/nfs/direct.c |
409 | */ |
410 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, |
411 | unsigned long); |
412 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
413 | const struct iovec *iov, unsigned long nr_segs, |
414 | loff_t pos); |
415 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, |
416 | const struct iovec *iov, unsigned long nr_segs, |
417 | loff_t pos); |
418 | |
419 | /* |
420 | * linux/fs/nfs/dir.c |
421 | */ |
422 | extern const struct inode_operations nfs_dir_inode_operations; |
423 | #ifdef CONFIG_NFS_V3 |
424 | extern const struct inode_operations nfs3_dir_inode_operations; |
425 | #endif /* CONFIG_NFS_V3 */ |
426 | extern const struct file_operations nfs_dir_operations; |
427 | extern const struct dentry_operations nfs_dentry_operations; |
428 | |
429 | extern void nfs_force_lookup_revalidate(struct inode *dir); |
430 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); |
431 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
432 | extern void nfs_access_zap_cache(struct inode *inode); |
433 | |
434 | /* |
435 | * linux/fs/nfs/symlink.c |
436 | */ |
437 | extern const struct inode_operations nfs_symlink_inode_operations; |
438 | |
439 | /* |
440 | * linux/fs/nfs/sysctl.c |
441 | */ |
442 | #ifdef CONFIG_SYSCTL |
443 | extern int nfs_register_sysctl(void); |
444 | extern void nfs_unregister_sysctl(void); |
445 | #else |
446 | #define nfs_register_sysctl() 0 |
447 | #define nfs_unregister_sysctl() do { } while(0) |
448 | #endif |
449 | |
450 | /* |
451 | * linux/fs/nfs/namespace.c |
452 | */ |
453 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
454 | extern const struct inode_operations nfs_referral_inode_operations; |
455 | extern int nfs_mountpoint_expiry_timeout; |
456 | extern void nfs_release_automount_timer(void); |
457 | |
458 | /* |
459 | * linux/fs/nfs/unlink.c |
460 | */ |
461 | extern int nfs_async_unlink(struct inode *dir, struct dentry *dentry); |
462 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); |
463 | extern void nfs_block_sillyrename(struct dentry *dentry); |
464 | extern void nfs_unblock_sillyrename(struct dentry *dentry); |
465 | |
466 | /* |
467 | * linux/fs/nfs/write.c |
468 | */ |
469 | extern int nfs_congestion_kb; |
470 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
471 | extern int nfs_writepages(struct address_space *, struct writeback_control *); |
472 | extern int nfs_flush_incompatible(struct file *file, struct page *page); |
473 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); |
474 | extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
475 | |
476 | /* |
477 | * Try to write back everything synchronously (but check the |
478 | * return value!) |
479 | */ |
480 | extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int); |
481 | extern int nfs_wb_all(struct inode *inode); |
482 | extern int nfs_wb_nocommit(struct inode *inode); |
483 | extern int nfs_wb_page(struct inode *inode, struct page* page); |
484 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
485 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
486 | extern int nfs_commit_inode(struct inode *, int); |
487 | extern struct nfs_write_data *nfs_commitdata_alloc(void); |
488 | extern void nfs_commit_free(struct nfs_write_data *wdata); |
489 | #else |
490 | static inline int |
491 | nfs_commit_inode(struct inode *inode, int how) |
492 | { |
493 | return 0; |
494 | } |
495 | #endif |
496 | |
497 | static inline int |
498 | nfs_have_writebacks(struct inode *inode) |
499 | { |
500 | return NFS_I(inode)->npages != 0; |
501 | } |
502 | |
503 | /* |
504 | * Allocate nfs_write_data structures |
505 | */ |
506 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); |
507 | extern void nfs_writedata_free(struct nfs_write_data *); |
508 | |
509 | /* |
510 | * linux/fs/nfs/read.c |
511 | */ |
512 | extern int nfs_readpage(struct file *, struct page *); |
513 | extern int nfs_readpages(struct file *, struct address_space *, |
514 | struct list_head *, unsigned); |
515 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
516 | extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, |
517 | struct page *); |
518 | |
519 | /* |
520 | * Allocate nfs_read_data structures |
521 | */ |
522 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); |
523 | extern void nfs_readdata_free(struct nfs_read_data *); |
524 | |
525 | /* |
526 | * linux/fs/nfs3proc.c |
527 | */ |
528 | #ifdef CONFIG_NFS_V3_ACL |
529 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); |
530 | extern int nfs3_proc_setacl(struct inode *inode, int type, |
531 | struct posix_acl *acl); |
532 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
533 | mode_t mode); |
534 | extern void nfs3_forget_cached_acls(struct inode *inode); |
535 | #else |
536 | static inline int nfs3_proc_set_default_acl(struct inode *dir, |
537 | struct inode *inode, |
538 | mode_t mode) |
539 | { |
540 | return 0; |
541 | } |
542 | |
543 | static inline void nfs3_forget_cached_acls(struct inode *inode) |
544 | { |
545 | } |
546 | #endif /* CONFIG_NFS_V3_ACL */ |
547 | |
548 | /* |
549 | * inline functions |
550 | */ |
551 | |
552 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
553 | { |
554 | if (size > (__u64) OFFSET_MAX - 1) |
555 | return OFFSET_MAX - 1; |
556 | return (loff_t) size; |
557 | } |
558 | |
559 | static inline ino_t |
560 | nfs_fileid_to_ino_t(u64 fileid) |
561 | { |
562 | ino_t ino = (ino_t) fileid; |
563 | if (sizeof(ino_t) < sizeof(u64)) |
564 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; |
565 | return ino; |
566 | } |
567 | |
568 | /* NFS root */ |
569 | |
570 | extern void * nfs_root_data(void); |
571 | |
572 | #define nfs_wait_event(clnt, wq, condition) \ |
573 | ({ \ |
574 | int __retval = wait_event_killable(wq, condition); \ |
575 | __retval; \ |
576 | }) |
577 | |
578 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) |
579 | |
580 | #endif /* __KERNEL__ */ |
581 | |
582 | /* |
583 | * NFS debug flags |
584 | */ |
585 | #define NFSDBG_VFS 0x0001 |
586 | #define NFSDBG_DIRCACHE 0x0002 |
587 | #define NFSDBG_LOOKUPCACHE 0x0004 |
588 | #define NFSDBG_PAGECACHE 0x0008 |
589 | #define NFSDBG_PROC 0x0010 |
590 | #define NFSDBG_XDR 0x0020 |
591 | #define NFSDBG_FILE 0x0040 |
592 | #define NFSDBG_ROOT 0x0080 |
593 | #define NFSDBG_CALLBACK 0x0100 |
594 | #define NFSDBG_CLIENT 0x0200 |
595 | #define NFSDBG_MOUNT 0x0400 |
596 | #define NFSDBG_FSCACHE 0x0800 |
597 | #define NFSDBG_ALL 0xFFFF |
598 | |
599 | #ifdef __KERNEL__ |
600 | |
601 | /* |
602 | * Enable debugging support for nfs client. |
603 | * Requires RPC_DEBUG. |
604 | */ |
605 | #ifdef RPC_DEBUG |
606 | # define NFS_DEBUG |
607 | #endif |
608 | |
609 | # undef ifdebug |
610 | # ifdef NFS_DEBUG |
611 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) |
612 | # else |
613 | # define ifdebug(fac) if (0) |
614 | # endif |
615 | #endif /* __KERNEL */ |
616 | |
617 | #endif |
618 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9