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NFSv4: Handle timeouts correctly when probing for lease validity
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CommitLineData
1da177e4
LT
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 */
1da177e4
LT
8#ifndef _LINUX_NFS_FS_H
9#define _LINUX_NFS_FS_H
10
607ca46e 11#include <uapi/linux/nfs_fs.h>
03bf4b70 12
1da177e4 13
e27d359e
TM
14/*
15 * Enable dprintk() debugging support for nfs client.
16 */
17#ifdef CONFIG_NFS_DEBUG
18# define NFS_DEBUG
19#endif
20
7f1cbe51
DW
21#include <linux/in.h>
22#include <linux/mm.h>
23#include <linux/pagemap.h>
1c3c07e9 24#include <linux/rbtree.h>
7f1cbe51
DW
25#include <linux/rwsem.h>
26#include <linux/wait.h>
27
28#include <linux/sunrpc/debug.h>
29#include <linux/sunrpc/auth.h>
30#include <linux/sunrpc/clnt.h>
31
32#include <linux/nfs.h>
33#include <linux/nfs2.h>
34#include <linux/nfs3.h>
35#include <linux/nfs4.h>
36#include <linux/nfs_xdr.h>
7f1cbe51
DW
37#include <linux/nfs_fs_sb.h>
38
7f1cbe51
DW
39#include <linux/mempool.h>
40
41/*
42 * These are the default flags for swap requests
43 */
44#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
45
1da177e4
LT
46/*
47 * NFSv3/v4 Access mode cache entry
48 */
49struct nfs_access_entry {
1c3c07e9 50 struct rb_node rb_node;
cfcea3e8 51 struct list_head lru;
1da177e4
LT
52 unsigned long jiffies;
53 struct rpc_cred * cred;
54 int mask;
55};
56
2a369153
TM
57struct nfs_lockowner {
58 fl_owner_t l_owner;
59 pid_t l_pid;
60};
61
f11ac8db
TM
62struct nfs_lock_context {
63 atomic_t count;
64 struct list_head list;
65 struct nfs_open_context *open_context;
2a369153 66 struct nfs_lockowner lockowner;
f11ac8db
TM
67};
68
1da177e4
LT
69struct nfs4_state;
70struct nfs_open_context {
f11ac8db 71 struct nfs_lock_context lock_context;
3d4ff43d 72 struct dentry *dentry;
1da177e4
LT
73 struct rpc_cred *cred;
74 struct nfs4_state *state;
dc0b027d 75 fmode_t mode;
7b159fc1
TM
76
77 unsigned long flags;
78#define NFS_CONTEXT_ERROR_WRITE (0)
05990d1b 79#define NFS_CONTEXT_RESEND_WRITES (1)
c58c8441 80#define NFS_CONTEXT_BAD (2)
1da177e4
LT
81 int error;
82
83 struct list_head list;
82be417a 84 struct nfs4_threshold *mdsthreshold;
480c2006 85};
00a92642 86
480c2006
BS
87struct nfs_open_dir_context {
88 struct rpc_cred *cred;
0c030806 89 unsigned long attr_gencount;
00a92642 90 __u64 dir_cookie;
8ef2ce3e 91 __u64 dup_cookie;
0c030806 92 signed char duped;
1da177e4
LT
93};
94
95/*
96 * NFSv4 delegation
97 */
98struct nfs_delegation;
99
5c6a9f7d
AG
100struct posix_acl;
101
1da177e4
LT
102/*
103 * nfs fs inode data in memory
104 */
105struct nfs_inode {
106 /*
107 * The 64bit 'inode number'
108 */
109 __u64 fileid;
110
111 /*
112 * NFS file handle
113 */
114 struct nfs_fh fh;
115
116 /*
117 * Various flags
118 */
412d582e
CL
119 unsigned long flags; /* atomic bit ops */
120 unsigned long cache_validity; /* bit mask */
1da177e4
LT
121
122 /*
24bd68f4 123 * read_cache_jiffies is when we started read-caching this inode.
1da177e4
LT
124 * attrtimeo is for how long the cached information is assumed
125 * to be valid. A successful attribute revalidation doubles
126 * attrtimeo (up to acregmax/acdirmax), a failure resets it to
127 * acregmin/acdirmin.
128 *
129 * We need to revalidate the cached attrs for this inode if
130 *
64672d55
PS
131 * jiffies - read_cache_jiffies >= attrtimeo
132 *
133 * Please note the comparison is greater than or equal
134 * so that zero timeout values can be specified.
1da177e4 135 */
1da177e4
LT
136 unsigned long read_cache_jiffies;
137 unsigned long attrtimeo;
138 unsigned long attrtimeo_timestamp;
1da177e4 139
4704f0e2 140 unsigned long attr_gencount;
1da177e4
LT
141 /* "Generation counter" for the attribute cache. This is
142 * bumped whenever we update the metadata on the
143 * server.
144 */
145 unsigned long cache_change_attribute;
1da177e4 146
1c3c07e9 147 struct rb_root access_cache;
cfcea3e8
TM
148 struct list_head access_cache_entry_lru;
149 struct list_head access_cache_inode_lru;
5c6a9f7d
AG
150#ifdef CONFIG_NFS_V3_ACL
151 struct posix_acl *acl_access;
152 struct posix_acl *acl_default;
153#endif
1da177e4
LT
154
155 /*
156 * This is the cookie verifier used for NFSv3 readdir
157 * operations
158 */
bc4785cd 159 __be32 cookieverf[2];
1da177e4 160
fb8a1f11 161 unsigned long npages;
ea2cf228 162 struct nfs_mds_commit_info commit_info;
1da177e4
LT
163
164 /* Open contexts for shared mmap writes */
165 struct list_head open_files;
166
565277f6
TM
167 /* Number of in-flight sillydelete RPC calls */
168 atomic_t silly_count;
169 /* List of deferred sillydelete requests */
170 struct hlist_head silly_list;
171 wait_queue_head_t waitqueue;
172
89d77c8f 173#if IS_ENABLED(CONFIG_NFS_V4)
e50a1c2e 174 struct nfs4_cached_acl *nfs4_acl;
1da177e4
LT
175 /* NFSv4 state */
176 struct list_head open_states;
5b22216e 177 struct nfs_delegation __rcu *delegation;
bd7bf9d5 178 fmode_t delegation_state;
1da177e4 179 struct rw_semaphore rwsem;
e5e94017
BH
180
181 /* pNFS layout information */
182 struct pnfs_layout_hdr *layout;
1da177e4 183#endif /* CONFIG_NFS_V4*/
2701d086
AA
184 /* how many bytes have been written/read and how many bytes queued up */
185 __u64 write_io;
186 __u64 read_io;
ef79c097
DH
187#ifdef CONFIG_NFS_FSCACHE
188 struct fscache_cookie *fscache;
189#endif
1da177e4
LT
190 struct inode vfs_inode;
191};
192
193/*
55296809 194 * Cache validity bit flags
1da177e4 195 */
55296809
CL
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 */
412c77ce 202#define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */
55296809
CL
203
204/*
412d582e 205 * Bit offsets in flags field
55296809 206 */
691beb13
TM
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 */
72cb77f4 210#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
ef79c097
DH
211#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
212#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
71d0a611 213#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
863a3c6c 214#define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */
92407e75 215#define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */
1da177e4 216
99fadcd7 217static inline struct nfs_inode *NFS_I(const struct inode *inode)
1da177e4
LT
218{
219 return container_of(inode, struct nfs_inode, vfs_inode);
220}
99fadcd7
BH
221
222static inline struct nfs_server *NFS_SB(const struct super_block *s)
223{
224 return (struct nfs_server *)(s->s_fs_info);
225}
226
227static inline struct nfs_fh *NFS_FH(const struct inode *inode)
228{
229 return &NFS_I(inode)->fh;
230}
231
232static inline struct nfs_server *NFS_SERVER(const struct inode *inode)
233{
234 return NFS_SB(inode->i_sb);
235}
236
237static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode)
238{
239 return NFS_SERVER(inode)->client;
240}
241
242static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode)
243{
244 return NFS_SERVER(inode)->nfs_client->rpc_ops;
245}
246
99fadcd7
BH
247static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode)
248{
249 struct nfs_server *nfss = NFS_SERVER(inode);
250 return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin;
251}
252
253static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode)
254{
255 struct nfs_server *nfss = NFS_SERVER(inode);
256 return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax;
257}
258
259static inline int NFS_STALE(const struct inode *inode)
260{
261 return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
262}
263
ef79c097
DH
264static inline int NFS_FSCACHE(const struct inode *inode)
265{
266 return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags);
267}
268
99fadcd7
BH
269static inline __u64 NFS_FILEID(const struct inode *inode)
270{
271 return NFS_I(inode)->fileid;
272}
273
274static inline void set_nfs_fileid(struct inode *inode, __u64 fileid)
275{
276 NFS_I(inode)->fileid = fileid;
277}
1da177e4 278
decf491f
TM
279static inline void nfs_mark_for_revalidate(struct inode *inode)
280{
38478b24
TM
281 struct nfs_inode *nfsi = NFS_I(inode);
282
decf491f 283 spin_lock(&inode->i_lock);
38478b24 284 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS;
f3821110 285 if (S_ISDIR(inode->i_mode))
38478b24 286 nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
decf491f
TM
287 spin_unlock(&inode->i_lock);
288}
289
1da177e4
LT
290static inline int nfs_server_capable(struct inode *inode, int cap)
291{
292 return NFS_SERVER(inode)->caps & cap;
293}
294
d75340cc
TM
295static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
296{
297 dentry->d_time = verf;
298}
299
1da177e4
LT
300/**
301 * nfs_save_change_attribute - Returns the inode attribute change cookie
8edb0182 302 * @dir - pointer to parent directory inode
1da177e4
LT
303 * The "change attribute" is updated every time we finish an operation
304 * that will result in a metadata change on the server.
305 */
8edb0182 306static inline unsigned long nfs_save_change_attribute(struct inode *dir)
1da177e4 307{
8edb0182 308 return NFS_I(dir)->cache_change_attribute;
1da177e4
LT
309}
310
311/**
4b841736
TM
312 * nfs_verify_change_attribute - Detects NFS remote directory changes
313 * @dir - pointer to parent directory inode
1da177e4 314 * @chattr - previously saved change attribute
4b841736
TM
315 * Return "false" if the verifiers doesn't match the change attribute.
316 * This would usually indicate that the directory contents have changed on
317 * the server, and that any dentries need revalidating.
1da177e4 318 */
4b841736 319static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr)
1da177e4 320{
4b841736 321 return chattr == NFS_I(dir)->cache_change_attribute;
1da177e4
LT
322}
323
324/*
325 * linux/fs/nfs/inode.c
326 */
29884df0 327extern int nfs_sync_mapping(struct address_space *mapping);
cd9ae2b6 328extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping);
1da177e4 329extern void nfs_zap_caches(struct inode *);
c4812998 330extern void nfs_invalidate_atime(struct inode *);
1da177e4
LT
331extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
332 struct nfs_fattr *);
333extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *);
decf491f 334extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr);
70ca8852 335extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr);
1da177e4 336extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
6168f62c
WAA
337extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *);
338extern void nfs_access_set_mask(struct nfs_access_entry *, u32);
10556cb2 339extern int nfs_permission(struct inode *, int);
1da177e4
LT
340extern int nfs_open(struct inode *, struct file *);
341extern int nfs_release(struct inode *, struct file *);
342extern int nfs_attribute_timeout(struct inode *inode);
343extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode);
344extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
44b11874 345extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping);
1da177e4 346extern int nfs_setattr(struct dentry *, struct iattr *);
65e4308d 347extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
1da177e4
LT
348extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
349extern void put_nfs_open_context(struct nfs_open_context *ctx);
dc0b027d 350extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode);
5ede7b1c 351extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode);
cd9a1c0e 352extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx);
f11ac8db
TM
353extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx);
354extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx);
f43bf0be 355extern u64 nfs_compat_user_ino64(u64 fileid);
4704f0e2 356extern void nfs_fattr_init(struct nfs_fattr *fattr);
56463e50 357extern unsigned long nfs_inc_attr_generation_counter(void);
1da177e4 358
2d36bfde
TM
359extern struct nfs_fattr *nfs_alloc_fattr(void);
360
361static inline void nfs_free_fattr(const struct nfs_fattr *fattr)
362{
363 kfree(fattr);
364}
365
366extern struct nfs_fh *nfs_alloc_fhandle(void);
367
368static inline void nfs_free_fhandle(const struct nfs_fh *fh)
369{
370 kfree(fh);
371}
372
e27d359e 373#ifdef NFS_DEBUG
d8e0539e
WAA
374extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh);
375static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh)
376{
377 return _nfs_display_fhandle_hash(fh);
378}
20d27e92
CL
379extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption);
380#define nfs_display_fhandle(fh, caption) \
381 do { \
382 if (unlikely(nfs_debug & NFSDBG_FACILITY)) \
383 _nfs_display_fhandle(fh, caption); \
384 } while (0)
385#else
d8e0539e
WAA
386static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh)
387{
9304a812 388 return 0;
d8e0539e 389}
20d27e92
CL
390static inline void nfs_display_fhandle(const struct nfs_fh *fh,
391 const char *caption)
392{
393}
394#endif
395
56463e50
CL
396/*
397 * linux/fs/nfs/nfsroot.c
398 */
399extern int nfs_root_data(char **root_device, char **root_data); /*__init*/
1da177e4 400/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
5a874db4 401extern __be32 root_nfs_parse_addr(char *name); /*__init*/
0e574af1 402
1da177e4
LT
403/*
404 * linux/fs/nfs/file.c
405 */
4b6f5d20 406extern const struct file_operations nfs_file_operations;
89d77c8f 407#if IS_ENABLED(CONFIG_NFS_V4)
1788ea6e
JL
408extern const struct file_operations nfs4_file_operations;
409#endif /* CONFIG_NFS_V4 */
f5e54d6e 410extern const struct address_space_operations nfs_file_aops;
11de3b11 411extern const struct address_space_operations nfs_dir_aops;
1da177e4 412
c03025d5
TM
413static inline struct nfs_open_context *nfs_file_open_context(struct file *filp)
414{
415 return filp->private_data;
416}
417
1da177e4
LT
418static inline struct rpc_cred *nfs_file_cred(struct file *file)
419{
504e5189
NB
420 if (file != NULL) {
421 struct nfs_open_context *ctx =
422 nfs_file_open_context(file);
423 if (ctx)
424 return ctx->cred;
425 }
1da177e4
LT
426 return NULL;
427}
428
b7fa0554
AG
429/*
430 * linux/fs/nfs/xattr.c
431 */
432#ifdef CONFIG_NFS_V3_ACL
433extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t);
434extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t);
435extern int nfs3_setxattr(struct dentry *, const char *,
436 const void *, size_t, int);
437extern int nfs3_removexattr (struct dentry *, const char *name);
438#else
439# define nfs3_listxattr NULL
440# define nfs3_getxattr NULL
441# define nfs3_setxattr NULL
442# define nfs3_removexattr NULL
443#endif
444
1da177e4
LT
445/*
446 * linux/fs/nfs/direct.c
447 */
448extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t,
449 unsigned long);
027445c3
BP
450extern ssize_t nfs_file_direct_read(struct kiocb *iocb,
451 const struct iovec *iov, unsigned long nr_segs,
a564b8f0 452 loff_t pos, bool uio);
027445c3
BP
453extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
454 const struct iovec *iov, unsigned long nr_segs,
a564b8f0 455 loff_t pos, bool uio);
1da177e4
LT
456
457/*
458 * linux/fs/nfs/dir.c
459 */
4b6f5d20 460extern const struct file_operations nfs_dir_operations;
f786aa90 461extern const struct dentry_operations nfs_dentry_operations;
1da177e4 462
bfc69a45 463extern void nfs_force_lookup_revalidate(struct inode *dir);
1da177e4 464extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
af22f94a
TM
465extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags);
466extern void nfs_access_zap_cache(struct inode *inode);
1da177e4
LT
467
468/*
469 * linux/fs/nfs/symlink.c
470 */
c5ef1c42 471extern const struct inode_operations nfs_symlink_inode_operations;
1da177e4 472
a72b4422
TM
473/*
474 * linux/fs/nfs/sysctl.c
475 */
476#ifdef CONFIG_SYSCTL
477extern int nfs_register_sysctl(void);
478extern void nfs_unregister_sysctl(void);
479#else
7fd105e7 480#define nfs_register_sysctl() 0
a72b4422
TM
481#define nfs_unregister_sysctl() do { } while(0)
482#endif
483
55a97593
TM
484/*
485 * linux/fs/nfs/namespace.c
486 */
c5ef1c42
AV
487extern const struct inode_operations nfs_mountpoint_inode_operations;
488extern const struct inode_operations nfs_referral_inode_operations;
51d8fa6a
TM
489extern int nfs_mountpoint_expiry_timeout;
490extern void nfs_release_automount_timer(void);
55a97593 491
1da177e4
LT
492/*
493 * linux/fs/nfs/unlink.c
494 */
e4eff1a6 495extern void nfs_complete_unlink(struct dentry *dentry, struct inode *);
565277f6
TM
496extern void nfs_block_sillyrename(struct dentry *dentry);
497extern void nfs_unblock_sillyrename(struct dentry *dentry);
779c5179 498extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry);
1da177e4
LT
499
500/*
501 * linux/fs/nfs/write.c
502 */
89a09141 503extern int nfs_congestion_kb;
1da177e4
LT
504extern int nfs_writepage(struct page *page, struct writeback_control *wbc);
505extern int nfs_writepages(struct address_space *, struct writeback_control *);
506extern int nfs_flush_incompatible(struct file *file, struct page *page);
507extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
13602896 508extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
1da177e4
LT
509
510/*
511 * Try to write back everything synchronously (but check the
512 * return value!)
513 */
1c75950b
TM
514extern int nfs_wb_all(struct inode *inode);
515extern int nfs_wb_page(struct inode *inode, struct page* page);
1b3b4a1a 516extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
89d77c8f 517#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
b608b283 518extern int nfs_commit_inode(struct inode *, int);
0b7c0153
FI
519extern struct nfs_commit_data *nfs_commitdata_alloc(void);
520extern void nfs_commit_free(struct nfs_commit_data *data);
77a63f3d
TM
521#else
522static inline int
523nfs_commit_inode(struct inode *inode, int how)
524{
525 return 0;
526}
1da177e4
LT
527#endif
528
529static inline int
530nfs_have_writebacks(struct inode *inode)
531{
532 return NFS_I(inode)->npages != 0;
533}
534
1da177e4
LT
535/*
536 * linux/fs/nfs/read.c
537 */
538extern int nfs_readpage(struct file *, struct page *);
539extern int nfs_readpages(struct file *, struct address_space *,
540 struct list_head *, unsigned);
ec06c096 541extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
f42b293d
DH
542extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
543 struct page *);
963d8fe5 544
b7fa0554
AG
545/*
546 * linux/fs/nfs3proc.c
547 */
548#ifdef CONFIG_NFS_V3_ACL
549extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type);
550extern int nfs3_proc_setacl(struct inode *inode, int type,
551 struct posix_acl *acl);
055ffbea 552extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
d3fb6120 553 umode_t mode);
5c6a9f7d 554extern void nfs3_forget_cached_acls(struct inode *inode);
055ffbea
AG
555#else
556static inline int nfs3_proc_set_default_acl(struct inode *dir,
557 struct inode *inode,
d3fb6120 558 umode_t mode)
055ffbea
AG
559{
560 return 0;
561}
5c6a9f7d
AG
562
563static inline void nfs3_forget_cached_acls(struct inode *inode)
564{
565}
b7fa0554
AG
566#endif /* CONFIG_NFS_V3_ACL */
567
1da177e4
LT
568/*
569 * inline functions
570 */
571
433c9237 572static inline loff_t nfs_size_to_loff_t(__u64 size)
1da177e4 573{
433c9237
CL
574 if (size > (__u64) OFFSET_MAX - 1)
575 return OFFSET_MAX - 1;
1da177e4
LT
576 return (loff_t) size;
577}
578
579static inline ino_t
580nfs_fileid_to_ino_t(u64 fileid)
581{
582 ino_t ino = (ino_t) fileid;
583 if (sizeof(ino_t) < sizeof(u64))
584 ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
585 return ino;
586}
587
1da177e4
LT
588#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
589
4dc2eaec 590
1da177e4
LT
591# undef ifdebug
592# ifdef NFS_DEBUG
593# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac))
6f00866d 594# define NFS_IFDEBUG(x) x
1da177e4
LT
595# else
596# define ifdebug(fac) if (0)
6f00866d 597# define NFS_IFDEBUG(x)
1da177e4 598# endif
1da177e4 599#endif