Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Jeff Garzik | e18fa70 | 2006-09-24 11:13:19 -0400 | [diff] [blame] | 12 | #include <linux/magic.h> |
| 13 | |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 14 | /* Default timeout values */ |
Trond Myklebust | 259875e | 2008-07-02 14:43:47 -0400 | [diff] [blame] | 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 | |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 20 | #define NFS_MAX_UDP_TIMEOUT (60*HZ) |
| 21 | #define NFS_MAX_TCP_TIMEOUT (600*HZ) |
| 22 | |
Chuck Lever | 0e0cab7 | 2008-06-26 17:47:12 -0400 | [diff] [blame] | 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 | |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 28 | /* |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 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 */ |
Trond Myklebust | 4d770cc | 2006-12-05 00:35:41 -0500 | [diff] [blame] | 38 | #define FLUSH_NOWRITEPAGE 128 /* Don't call writepage() */ |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 39 | |
| 40 | #ifdef __KERNEL__ |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/in.h> |
Trond Myklebust | 3bec63d | 2007-06-17 16:02:44 -0400 | [diff] [blame] | 43 | #include <linux/kref.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/mm.h> |
| 45 | #include <linux/pagemap.h> |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 46 | #include <linux/rbtree.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/rwsem.h> |
| 48 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include <linux/sunrpc/debug.h> |
| 51 | #include <linux/sunrpc/auth.h> |
| 52 | #include <linux/sunrpc/clnt.h> |
| 53 | |
| 54 | #include <linux/nfs.h> |
| 55 | #include <linux/nfs2.h> |
| 56 | #include <linux/nfs3.h> |
| 57 | #include <linux/nfs4.h> |
| 58 | #include <linux/nfs_xdr.h> |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 59 | #include <linux/nfs_fs_sb.h> |
| 60 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/mempool.h> |
| 62 | |
| 63 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | * These are the default flags for swap requests |
| 65 | */ |
| 66 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) |
| 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | * NFSv3/v4 Access mode cache entry |
| 70 | */ |
| 71 | struct nfs_access_entry { |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 72 | struct rb_node rb_node; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 73 | struct list_head lru; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | unsigned long jiffies; |
| 75 | struct rpc_cred * cred; |
| 76 | int mask; |
| 77 | }; |
| 78 | |
| 79 | struct nfs4_state; |
| 80 | struct nfs_open_context { |
Trond Myklebust | 5e11934 | 2007-07-26 12:06:17 -0400 | [diff] [blame] | 81 | atomic_t count; |
Trond Myklebust | 88be9f9 | 2007-06-05 10:42:27 -0400 | [diff] [blame] | 82 | struct path path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct rpc_cred *cred; |
| 84 | struct nfs4_state *state; |
| 85 | fl_owner_t lockowner; |
| 86 | int mode; |
Trond Myklebust | 7b159fc | 2007-07-25 14:09:54 -0400 | [diff] [blame] | 87 | |
| 88 | unsigned long flags; |
| 89 | #define NFS_CONTEXT_ERROR_WRITE (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | int error; |
| 91 | |
| 92 | struct list_head list; |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 93 | |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 94 | __u64 dir_cookie; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | }; |
| 96 | |
| 97 | /* |
| 98 | * NFSv4 delegation |
| 99 | */ |
| 100 | struct nfs_delegation; |
| 101 | |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 102 | struct posix_acl; |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | /* |
| 105 | * nfs fs inode data in memory |
| 106 | */ |
| 107 | struct nfs_inode { |
| 108 | /* |
| 109 | * The 64bit 'inode number' |
| 110 | */ |
| 111 | __u64 fileid; |
| 112 | |
| 113 | /* |
| 114 | * NFS file handle |
| 115 | */ |
| 116 | struct nfs_fh fh; |
| 117 | |
| 118 | /* |
| 119 | * Various flags |
| 120 | */ |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 121 | unsigned long flags; /* atomic bit ops */ |
| 122 | unsigned long cache_validity; /* bit mask */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | /* |
Goldwyn Rodrigues | 24bd68f | 2006-03-20 13:44:11 -0500 | [diff] [blame] | 125 | * read_cache_jiffies is when we started read-caching this inode. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | * attrtimeo is for how long the cached information is assumed |
| 127 | * to be valid. A successful attribute revalidation doubles |
| 128 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to |
| 129 | * acregmin/acdirmin. |
| 130 | * |
| 131 | * We need to revalidate the cached attrs for this inode if |
| 132 | * |
| 133 | * jiffies - read_cache_jiffies > attrtimeo |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | unsigned long read_cache_jiffies; |
| 136 | unsigned long attrtimeo; |
| 137 | unsigned long attrtimeo_timestamp; |
| 138 | __u64 change_attr; /* v4 only */ |
| 139 | |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 140 | unsigned long attr_gencount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 147 | struct rb_root access_cache; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 148 | struct list_head access_cache_entry_lru; |
| 149 | struct list_head access_cache_inode_lru; |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 150 | #ifdef CONFIG_NFS_V3_ACL |
| 151 | struct posix_acl *acl_access; |
| 152 | struct posix_acl *acl_default; |
| 153 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
| 155 | /* |
| 156 | * This is the cookie verifier used for NFSv3 readdir |
| 157 | * operations |
| 158 | */ |
Al Viro | bc4785c | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 159 | __be32 cookieverf[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
| 161 | /* |
| 162 | * This is the list of dirty unwritten pages. |
| 163 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | struct radix_tree_root nfs_page_tree; |
| 165 | |
Trond Myklebust | dce34ce | 2007-06-17 15:47:53 -0400 | [diff] [blame] | 166 | unsigned long ncommit, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | npages; |
| 168 | |
| 169 | /* Open contexts for shared mmap writes */ |
| 170 | struct list_head open_files; |
| 171 | |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 172 | /* Number of in-flight sillydelete RPC calls */ |
| 173 | atomic_t silly_count; |
| 174 | /* List of deferred sillydelete requests */ |
| 175 | struct hlist_head silly_list; |
| 176 | wait_queue_head_t waitqueue; |
| 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | #ifdef CONFIG_NFS_V4 |
J. Bruce Fields | e50a1c2 | 2005-06-22 17:16:23 +0000 | [diff] [blame] | 179 | struct nfs4_cached_acl *nfs4_acl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | /* NFSv4 state */ |
| 181 | struct list_head open_states; |
| 182 | struct nfs_delegation *delegation; |
Trond Myklebust | bd7bf9d | 2008-12-23 15:21:53 -0500 | [diff] [blame] | 183 | fmode_t delegation_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | struct rw_semaphore rwsem; |
| 185 | #endif /* CONFIG_NFS_V4*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | struct inode vfs_inode; |
| 187 | }; |
| 188 | |
| 189 | /* |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 190 | * Cache validity bit flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 192 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
| 193 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ |
| 194 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ |
| 195 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ |
| 196 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ |
| 197 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ |
Trond Myklebust | 412c77c | 2007-07-03 16:10:55 -0400 | [diff] [blame] | 198 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 199 | |
| 200 | /* |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 201 | * Bit offsets in flags field |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 202 | */ |
Trond Myklebust | 691beb1 | 2008-10-05 14:48:22 -0400 | [diff] [blame] | 203 | #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ |
| 204 | #define NFS_INO_STALE (1) /* possible stale inode */ |
| 205 | #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ |
| 206 | #define NFS_INO_MOUNTPOINT (3) /* inode is remote mountpoint */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 208 | static inline struct nfs_inode *NFS_I(const struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
| 210 | return container_of(inode, struct nfs_inode, vfs_inode); |
| 211 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 213 | static inline struct nfs_server *NFS_SB(const struct super_block *s) |
| 214 | { |
| 215 | return (struct nfs_server *)(s->s_fs_info); |
| 216 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 218 | static inline struct nfs_fh *NFS_FH(const struct inode *inode) |
| 219 | { |
| 220 | return &NFS_I(inode)->fh; |
| 221 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 223 | static inline struct nfs_server *NFS_SERVER(const struct inode *inode) |
| 224 | { |
| 225 | return NFS_SB(inode->i_sb); |
| 226 | } |
| 227 | |
| 228 | static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) |
| 229 | { |
| 230 | return NFS_SERVER(inode)->client; |
| 231 | } |
| 232 | |
| 233 | static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) |
| 234 | { |
| 235 | return NFS_SERVER(inode)->nfs_client->rpc_ops; |
| 236 | } |
| 237 | |
| 238 | static inline __be32 *NFS_COOKIEVERF(const struct inode *inode) |
| 239 | { |
| 240 | return NFS_I(inode)->cookieverf; |
| 241 | } |
| 242 | |
| 243 | static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) |
| 244 | { |
| 245 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 246 | return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; |
| 247 | } |
| 248 | |
| 249 | static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) |
| 250 | { |
| 251 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 252 | return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; |
| 253 | } |
| 254 | |
| 255 | static inline int NFS_STALE(const struct inode *inode) |
| 256 | { |
| 257 | return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
| 258 | } |
| 259 | |
| 260 | static inline __u64 NFS_FILEID(const struct inode *inode) |
| 261 | { |
| 262 | return NFS_I(inode)->fileid; |
| 263 | } |
| 264 | |
| 265 | static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) |
| 266 | { |
| 267 | NFS_I(inode)->fileid = fileid; |
| 268 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 270 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
| 271 | { |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 272 | struct nfs_inode *nfsi = NFS_I(inode); |
| 273 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 274 | spin_lock(&inode->i_lock); |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 275 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
Trond Myklebust | f382111 | 2007-10-01 10:00:23 -0400 | [diff] [blame] | 276 | if (S_ISDIR(inode->i_mode)) |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 277 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 278 | spin_unlock(&inode->i_lock); |
| 279 | } |
| 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | static inline int nfs_server_capable(struct inode *inode, int cap) |
| 282 | { |
| 283 | return NFS_SERVER(inode)->caps & cap; |
| 284 | } |
| 285 | |
| 286 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) |
| 287 | { |
Benny Halevy | 3a10c30 | 2008-01-23 08:58:59 +0200 | [diff] [blame] | 288 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
| 290 | |
Trond Myklebust | d75340c | 2007-10-01 21:42:01 -0400 | [diff] [blame] | 291 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
| 292 | { |
| 293 | dentry->d_time = verf; |
| 294 | } |
| 295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | /** |
| 297 | * nfs_save_change_attribute - Returns the inode attribute change cookie |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 298 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | * The "change attribute" is updated every time we finish an operation |
| 300 | * that will result in a metadata change on the server. |
| 301 | */ |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 302 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | { |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 304 | return NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | /** |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 308 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
| 309 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | * @chattr - previously saved change attribute |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 311 | * Return "false" if the verifiers doesn't match the change attribute. |
| 312 | * This would usually indicate that the directory contents have changed on |
| 313 | * the server, and that any dentries need revalidating. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | */ |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 315 | static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 317 | return chattr == NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | /* |
| 321 | * linux/fs/nfs/inode.c |
| 322 | */ |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 323 | extern int nfs_sync_mapping(struct address_space *mapping); |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 324 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | extern void nfs_zap_caches(struct inode *); |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 326 | extern void nfs_invalidate_atime(struct inode *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
| 328 | struct nfs_fattr *); |
| 329 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 330 | extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); |
Trond Myklebust | 70ca885 | 2007-09-30 15:21:24 -0400 | [diff] [blame] | 331 | extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
Al Viro | e6305c4 | 2008-07-15 21:03:57 -0400 | [diff] [blame] | 333 | extern int nfs_permission(struct inode *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | extern int nfs_open(struct inode *, struct file *); |
| 335 | extern int nfs_release(struct inode *, struct file *); |
| 336 | extern int nfs_attribute_timeout(struct inode *inode); |
| 337 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); |
| 338 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 339 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
Trond Myklebust | 717d44e | 2007-01-24 11:54:55 -0800 | [diff] [blame] | 340 | extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | extern int nfs_setattr(struct dentry *, struct iattr *); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 342 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
| 344 | extern void put_nfs_open_context(struct nfs_open_context *ctx); |
Trond Myklebust | d530838 | 2005-11-04 15:33:38 -0500 | [diff] [blame] | 345 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 346 | extern u64 nfs_compat_user_ino64(u64 fileid); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 347 | extern void nfs_fattr_init(struct nfs_fattr *fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ |
Al Viro | 5a874db | 2006-11-08 00:19:38 -0800 | [diff] [blame] | 350 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 351 | extern unsigned long nfs_inc_attr_generation_counter(void); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 352 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | /* |
| 354 | * linux/fs/nfs/file.c |
| 355 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 356 | extern const struct inode_operations nfs_file_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 357 | #ifdef CONFIG_NFS_V3 |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 358 | extern const struct inode_operations nfs3_file_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 359 | #endif /* CONFIG_NFS_V3 */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 360 | extern const struct file_operations nfs_file_operations; |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 361 | extern const struct address_space_operations nfs_file_aops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
Trond Myklebust | c03025d | 2007-08-10 17:44:28 -0400 | [diff] [blame] | 363 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
| 364 | { |
| 365 | return filp->private_data; |
| 366 | } |
| 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
| 369 | { |
Neil Brown | 504e518 | 2008-10-16 14:15:16 +1100 | [diff] [blame] | 370 | if (file != NULL) { |
| 371 | struct nfs_open_context *ctx = |
| 372 | nfs_file_open_context(file); |
| 373 | if (ctx) |
| 374 | return ctx->cred; |
| 375 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | return NULL; |
| 377 | } |
| 378 | |
| 379 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 380 | * linux/fs/nfs/xattr.c |
| 381 | */ |
| 382 | #ifdef CONFIG_NFS_V3_ACL |
| 383 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); |
| 384 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); |
| 385 | extern int nfs3_setxattr(struct dentry *, const char *, |
| 386 | const void *, size_t, int); |
| 387 | extern int nfs3_removexattr (struct dentry *, const char *name); |
| 388 | #else |
| 389 | # define nfs3_listxattr NULL |
| 390 | # define nfs3_getxattr NULL |
| 391 | # define nfs3_setxattr NULL |
| 392 | # define nfs3_removexattr NULL |
| 393 | #endif |
| 394 | |
| 395 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | * linux/fs/nfs/direct.c |
| 397 | */ |
| 398 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, |
| 399 | unsigned long); |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 400 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
| 401 | const struct iovec *iov, unsigned long nr_segs, |
| 402 | loff_t pos); |
| 403 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, |
| 404 | const struct iovec *iov, unsigned long nr_segs, |
| 405 | loff_t pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | /* |
| 408 | * linux/fs/nfs/dir.c |
| 409 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 410 | extern const struct inode_operations nfs_dir_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 411 | #ifdef CONFIG_NFS_V3 |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 412 | extern const struct inode_operations nfs3_dir_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 413 | #endif /* CONFIG_NFS_V3 */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 414 | extern const struct file_operations nfs_dir_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | extern struct dentry_operations nfs_dentry_operations; |
| 416 | |
Trond Myklebust | bfc69a4 | 2007-10-15 18:18:29 -0400 | [diff] [blame] | 417 | extern void nfs_force_lookup_revalidate(struct inode *dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); |
Trond Myklebust | af22f94 | 2007-08-10 17:45:10 -0400 | [diff] [blame] | 419 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
| 420 | extern void nfs_access_zap_cache(struct inode *inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | /* |
| 423 | * linux/fs/nfs/symlink.c |
| 424 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 425 | extern const struct inode_operations nfs_symlink_inode_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | /* |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 428 | * linux/fs/nfs/sysctl.c |
| 429 | */ |
| 430 | #ifdef CONFIG_SYSCTL |
| 431 | extern int nfs_register_sysctl(void); |
| 432 | extern void nfs_unregister_sysctl(void); |
| 433 | #else |
Stephen Rothwell | 7fd105e | 2006-02-20 18:28:08 -0800 | [diff] [blame] | 434 | #define nfs_register_sysctl() 0 |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 435 | #define nfs_unregister_sysctl() do { } while(0) |
| 436 | #endif |
| 437 | |
| 438 | /* |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 439 | * linux/fs/nfs/namespace.c |
| 440 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 441 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
| 442 | extern const struct inode_operations nfs_referral_inode_operations; |
Trond Myklebust | 51d8fa6 | 2006-06-09 09:34:20 -0400 | [diff] [blame] | 443 | extern int nfs_mountpoint_expiry_timeout; |
| 444 | extern void nfs_release_automount_timer(void); |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 445 | |
| 446 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | * linux/fs/nfs/unlink.c |
| 448 | */ |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 449 | extern int nfs_async_unlink(struct inode *dir, struct dentry *dentry); |
| 450 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 451 | extern void nfs_block_sillyrename(struct dentry *dentry); |
| 452 | extern void nfs_unblock_sillyrename(struct dentry *dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | /* |
| 455 | * linux/fs/nfs/write.c |
| 456 | */ |
Peter Zijlstra | 89a0914 | 2007-03-16 13:38:26 -0800 | [diff] [blame] | 457 | extern int nfs_congestion_kb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
| 459 | extern int nfs_writepages(struct address_space *, struct writeback_control *); |
| 460 | extern int nfs_flush_incompatible(struct file *file, struct page *page); |
| 461 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); |
Chuck Lever | 462d5b3 | 2006-03-20 13:44:32 -0500 | [diff] [blame] | 462 | extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
| 463 | extern void nfs_writedata_release(void *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | /* |
| 466 | * Try to write back everything synchronously (but check the |
| 467 | * return value!) |
| 468 | */ |
Trond Myklebust | 1c75950 | 2006-10-09 16:18:38 -0400 | [diff] [blame] | 469 | extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int); |
Trond Myklebust | 1c75950 | 2006-10-09 16:18:38 -0400 | [diff] [blame] | 470 | extern int nfs_wb_all(struct inode *inode); |
Trond Myklebust | ed90ef5 | 2007-07-20 13:13:28 -0400 | [diff] [blame] | 471 | extern int nfs_wb_nocommit(struct inode *inode); |
Trond Myklebust | 1c75950 | 2006-10-09 16:18:38 -0400 | [diff] [blame] | 472 | extern int nfs_wb_page(struct inode *inode, struct page* page); |
Trond Myklebust | 1b3b4a1 | 2007-08-28 10:29:36 -0400 | [diff] [blame] | 473 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
Trond Myklebust | 3da28eb | 2005-06-22 17:16:31 +0000 | [diff] [blame] | 475 | extern int nfs_commit_inode(struct inode *, int); |
Trond Myklebust | c9d8f89 | 2008-04-15 16:56:39 -0400 | [diff] [blame] | 476 | extern struct nfs_write_data *nfs_commitdata_alloc(void); |
Trond Myklebust | 8aca67f | 2006-11-13 16:23:44 -0500 | [diff] [blame] | 477 | extern void nfs_commit_free(struct nfs_write_data *wdata); |
Trond Myklebust | c9d8f89 | 2008-04-15 16:56:39 -0400 | [diff] [blame] | 478 | extern void nfs_commitdata_release(void *wdata); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | #else |
| 480 | static inline int |
Trond Myklebust | 3da28eb | 2005-06-22 17:16:31 +0000 | [diff] [blame] | 481 | nfs_commit_inode(struct inode *inode, int how) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | { |
| 483 | return 0; |
| 484 | } |
| 485 | #endif |
| 486 | |
| 487 | static inline int |
| 488 | nfs_have_writebacks(struct inode *inode) |
| 489 | { |
| 490 | return NFS_I(inode)->npages != 0; |
| 491 | } |
| 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | /* |
Adrian Bunk | e4e2051 | 2006-08-03 15:07:47 -0400 | [diff] [blame] | 494 | * Allocate nfs_write_data structures |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | */ |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 496 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | /* |
| 499 | * linux/fs/nfs/read.c |
| 500 | */ |
| 501 | extern int nfs_readpage(struct file *, struct page *); |
| 502 | extern int nfs_readpages(struct file *, struct address_space *, |
| 503 | struct list_head *, unsigned); |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 504 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
| 505 | extern void nfs_readdata_release(void *data); |
Trond Myklebust | 963d8fe | 2006-01-03 09:55:04 +0100 | [diff] [blame] | 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | /* |
Adrian Bunk | e4e2051 | 2006-08-03 15:07:47 -0400 | [diff] [blame] | 508 | * Allocate nfs_read_data structures |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | */ |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 510 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 513 | * linux/fs/nfs3proc.c |
| 514 | */ |
| 515 | #ifdef CONFIG_NFS_V3_ACL |
| 516 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); |
| 517 | extern int nfs3_proc_setacl(struct inode *inode, int type, |
| 518 | struct posix_acl *acl); |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 519 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
| 520 | mode_t mode); |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 521 | extern void nfs3_forget_cached_acls(struct inode *inode); |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 522 | #else |
| 523 | static inline int nfs3_proc_set_default_acl(struct inode *dir, |
| 524 | struct inode *inode, |
| 525 | mode_t mode) |
| 526 | { |
| 527 | return 0; |
| 528 | } |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 529 | |
| 530 | static inline void nfs3_forget_cached_acls(struct inode *inode) |
| 531 | { |
| 532 | } |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 533 | #endif /* CONFIG_NFS_V3_ACL */ |
| 534 | |
| 535 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | * inline functions |
| 537 | */ |
| 538 | |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 539 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | { |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 541 | if (size > (__u64) OFFSET_MAX - 1) |
| 542 | return OFFSET_MAX - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | return (loff_t) size; |
| 544 | } |
| 545 | |
| 546 | static inline ino_t |
| 547 | nfs_fileid_to_ino_t(u64 fileid) |
| 548 | { |
| 549 | ino_t ino = (ino_t) fileid; |
| 550 | if (sizeof(ino_t) < sizeof(u64)) |
| 551 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; |
| 552 | return ino; |
| 553 | } |
| 554 | |
| 555 | /* NFS root */ |
| 556 | |
| 557 | extern void * nfs_root_data(void); |
| 558 | |
| 559 | #define nfs_wait_event(clnt, wq, condition) \ |
| 560 | ({ \ |
Matthew Wilcox | 150030b | 2007-12-06 16:24:39 -0500 | [diff] [blame] | 561 | int __retval = wait_event_killable(wq, condition); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | __retval; \ |
| 563 | }) |
| 564 | |
| 565 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) |
| 566 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | #endif /* __KERNEL__ */ |
| 568 | |
| 569 | /* |
| 570 | * NFS debug flags |
| 571 | */ |
| 572 | #define NFSDBG_VFS 0x0001 |
| 573 | #define NFSDBG_DIRCACHE 0x0002 |
| 574 | #define NFSDBG_LOOKUPCACHE 0x0004 |
| 575 | #define NFSDBG_PAGECACHE 0x0008 |
| 576 | #define NFSDBG_PROC 0x0010 |
| 577 | #define NFSDBG_XDR 0x0020 |
| 578 | #define NFSDBG_FILE 0x0040 |
| 579 | #define NFSDBG_ROOT 0x0080 |
| 580 | #define NFSDBG_CALLBACK 0x0100 |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 581 | #define NFSDBG_CLIENT 0x0200 |
Chuck Lever | f182899 | 2007-07-01 12:12:51 -0400 | [diff] [blame] | 582 | #define NFSDBG_MOUNT 0x0400 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | #define NFSDBG_ALL 0xFFFF |
| 584 | |
| 585 | #ifdef __KERNEL__ |
Benny Halevy | 4dc2eae | 2006-12-20 22:29:46 +0200 | [diff] [blame] | 586 | |
| 587 | /* |
| 588 | * Enable debugging support for nfs client. |
| 589 | * Requires RPC_DEBUG. |
| 590 | */ |
| 591 | #ifdef RPC_DEBUG |
| 592 | # define NFS_DEBUG |
| 593 | #endif |
| 594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | # undef ifdebug |
| 596 | # ifdef NFS_DEBUG |
| 597 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) |
| 598 | # else |
| 599 | # define ifdebug(fac) if (0) |
| 600 | # endif |
| 601 | #endif /* __KERNEL */ |
| 602 | |
| 603 | #endif |