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 */ |
Trond Myklebust | b31268a | 2011-03-21 17:02:00 -0400 | [diff] [blame] | 36 | #define FLUSH_COND_STABLE 32 /* conditional stable write - only stable |
| 37 | * if everything fits in one RPC */ |
David Woodhouse | 7f1cbe5 | 2006-09-12 20:36:02 -0700 | [diff] [blame] | 38 | |
| 39 | #ifdef __KERNEL__ |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/in.h> |
| 42 | #include <linux/mm.h> |
| 43 | #include <linux/pagemap.h> |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 44 | #include <linux/rbtree.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/rwsem.h> |
| 46 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/sunrpc/debug.h> |
| 49 | #include <linux/sunrpc/auth.h> |
| 50 | #include <linux/sunrpc/clnt.h> |
| 51 | |
| 52 | #include <linux/nfs.h> |
| 53 | #include <linux/nfs2.h> |
| 54 | #include <linux/nfs3.h> |
| 55 | #include <linux/nfs4.h> |
| 56 | #include <linux/nfs_xdr.h> |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 57 | #include <linux/nfs_fs_sb.h> |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <linux/mempool.h> |
| 60 | |
| 61 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | * These are the default flags for swap requests |
| 63 | */ |
| 64 | #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) |
| 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | * NFSv3/v4 Access mode cache entry |
| 68 | */ |
| 69 | struct nfs_access_entry { |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 70 | struct rb_node rb_node; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 71 | struct list_head lru; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | unsigned long jiffies; |
| 73 | struct rpc_cred * cred; |
| 74 | int mask; |
| 75 | }; |
| 76 | |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 77 | struct nfs_lock_context { |
| 78 | atomic_t count; |
| 79 | struct list_head list; |
| 80 | struct nfs_open_context *open_context; |
| 81 | fl_owner_t lockowner; |
| 82 | pid_t pid; |
| 83 | }; |
| 84 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | struct nfs4_state; |
| 86 | struct nfs_open_context { |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 87 | struct nfs_lock_context lock_context; |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 88 | struct dentry *dentry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | struct rpc_cred *cred; |
| 90 | struct nfs4_state *state; |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 91 | fmode_t mode; |
Trond Myklebust | 7b159fc | 2007-07-25 14:09:54 -0400 | [diff] [blame] | 92 | |
| 93 | unsigned long flags; |
| 94 | #define NFS_CONTEXT_ERROR_WRITE (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | int error; |
| 96 | |
| 97 | struct list_head list; |
Bryan Schumaker | 480c200 | 2011-03-23 14:48:29 -0400 | [diff] [blame] | 98 | }; |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 99 | |
Bryan Schumaker | 480c200 | 2011-03-23 14:48:29 -0400 | [diff] [blame] | 100 | struct nfs_open_dir_context { |
| 101 | struct rpc_cred *cred; |
Trond Myklebust | 0c03080 | 2011-07-30 12:45:35 -0400 | [diff] [blame] | 102 | unsigned long attr_gencount; |
Olivier Galibert | 00a9264 | 2005-06-22 17:16:29 +0000 | [diff] [blame] | 103 | __u64 dir_cookie; |
Bryan Schumaker | 8ef2ce3 | 2011-03-23 15:04:31 -0400 | [diff] [blame] | 104 | __u64 dup_cookie; |
Trond Myklebust | 0c03080 | 2011-07-30 12:45:35 -0400 | [diff] [blame] | 105 | signed char duped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | }; |
| 107 | |
| 108 | /* |
| 109 | * NFSv4 delegation |
| 110 | */ |
| 111 | struct nfs_delegation; |
| 112 | |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 113 | struct posix_acl; |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* |
| 116 | * nfs fs inode data in memory |
| 117 | */ |
| 118 | struct nfs_inode { |
| 119 | /* |
| 120 | * The 64bit 'inode number' |
| 121 | */ |
| 122 | __u64 fileid; |
| 123 | |
| 124 | /* |
| 125 | * NFS file handle |
| 126 | */ |
| 127 | struct nfs_fh fh; |
| 128 | |
| 129 | /* |
| 130 | * Various flags |
| 131 | */ |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 132 | unsigned long flags; /* atomic bit ops */ |
| 133 | unsigned long cache_validity; /* bit mask */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | /* |
Goldwyn Rodrigues | 24bd68f | 2006-03-20 13:44:11 -0500 | [diff] [blame] | 136 | * read_cache_jiffies is when we started read-caching this inode. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | * attrtimeo is for how long the cached information is assumed |
| 138 | * to be valid. A successful attribute revalidation doubles |
| 139 | * attrtimeo (up to acregmax/acdirmax), a failure resets it to |
| 140 | * acregmin/acdirmin. |
| 141 | * |
| 142 | * We need to revalidate the cached attrs for this inode if |
| 143 | * |
Peter Staubach | 64672d5 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 144 | * jiffies - read_cache_jiffies >= attrtimeo |
| 145 | * |
| 146 | * Please note the comparison is greater than or equal |
| 147 | * so that zero timeout values can be specified. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | unsigned long read_cache_jiffies; |
| 150 | unsigned long attrtimeo; |
| 151 | unsigned long attrtimeo_timestamp; |
| 152 | __u64 change_attr; /* v4 only */ |
| 153 | |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 154 | unsigned long attr_gencount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /* "Generation counter" for the attribute cache. This is |
| 156 | * bumped whenever we update the metadata on the |
| 157 | * server. |
| 158 | */ |
| 159 | unsigned long cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Trond Myklebust | 1c3c07e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 161 | struct rb_root access_cache; |
Trond Myklebust | cfcea3e | 2006-07-25 11:28:18 -0400 | [diff] [blame] | 162 | struct list_head access_cache_entry_lru; |
| 163 | struct list_head access_cache_inode_lru; |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 164 | #ifdef CONFIG_NFS_V3_ACL |
| 165 | struct posix_acl *acl_access; |
| 166 | struct posix_acl *acl_default; |
| 167 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
| 169 | /* |
| 170 | * This is the cookie verifier used for NFSv3 readdir |
| 171 | * operations |
| 172 | */ |
Al Viro | bc4785c | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 173 | __be32 cookieverf[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
| 175 | /* |
| 176 | * This is the list of dirty unwritten pages. |
| 177 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | struct radix_tree_root nfs_page_tree; |
| 179 | |
Trond Myklebust | fb8a1f1 | 2009-03-11 14:10:29 -0400 | [diff] [blame] | 180 | unsigned long npages; |
Trond Myklebust | ff778d0 | 2010-02-19 16:53:39 -0800 | [diff] [blame] | 181 | unsigned long ncommit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | /* Open contexts for shared mmap writes */ |
| 184 | struct list_head open_files; |
| 185 | |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 186 | /* Number of in-flight sillydelete RPC calls */ |
| 187 | atomic_t silly_count; |
| 188 | /* List of deferred sillydelete requests */ |
| 189 | struct hlist_head silly_list; |
| 190 | wait_queue_head_t waitqueue; |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | #ifdef CONFIG_NFS_V4 |
J. Bruce Fields | e50a1c2 | 2005-06-22 17:16:23 +0000 | [diff] [blame] | 193 | struct nfs4_cached_acl *nfs4_acl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | /* NFSv4 state */ |
| 195 | struct list_head open_states; |
Arnd Bergmann | 5b22216 | 2010-03-03 10:20:10 +0100 | [diff] [blame] | 196 | struct nfs_delegation __rcu *delegation; |
Trond Myklebust | bd7bf9d | 2008-12-23 15:21:53 -0500 | [diff] [blame] | 197 | fmode_t delegation_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | struct rw_semaphore rwsem; |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 199 | |
| 200 | /* pNFS layout information */ |
| 201 | struct pnfs_layout_hdr *layout; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 202 | atomic_t commits_outstanding; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | #endif /* CONFIG_NFS_V4*/ |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 204 | #ifdef CONFIG_NFS_FSCACHE |
| 205 | struct fscache_cookie *fscache; |
| 206 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | struct inode vfs_inode; |
| 208 | }; |
| 209 | |
| 210 | /* |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 211 | * Cache validity bit flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 213 | #define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */ |
| 214 | #define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */ |
| 215 | #define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */ |
| 216 | #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ |
| 217 | #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ |
| 218 | #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ |
Trond Myklebust | 412c77c | 2007-07-03 16:10:55 -0400 | [diff] [blame] | 219 | #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 220 | |
| 221 | /* |
Chuck Lever | 412d582 | 2005-08-18 11:24:11 -0700 | [diff] [blame] | 222 | * Bit offsets in flags field |
Chuck Lever | 5529680 | 2005-08-18 11:24:09 -0700 | [diff] [blame] | 223 | */ |
Trond Myklebust | 691beb1 | 2008-10-05 14:48:22 -0400 | [diff] [blame] | 224 | #define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ |
| 225 | #define NFS_INO_STALE (1) /* possible stale inode */ |
| 226 | #define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ |
Trond Myklebust | 72cb77f | 2009-03-11 14:10:30 -0400 | [diff] [blame] | 227 | #define NFS_INO_FLUSHING (4) /* inode is flushing out data */ |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 228 | #define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ |
| 229 | #define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ |
Trond Myklebust | 71d0a61 | 2010-04-22 15:35:57 -0400 | [diff] [blame] | 230 | #define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 231 | #define NFS_INO_PNFS_COMMIT (8) /* use pnfs code for commit */ |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 232 | #define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 234 | static inline struct nfs_inode *NFS_I(const struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
| 236 | return container_of(inode, struct nfs_inode, vfs_inode); |
| 237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 239 | static inline struct nfs_server *NFS_SB(const struct super_block *s) |
| 240 | { |
| 241 | return (struct nfs_server *)(s->s_fs_info); |
| 242 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 244 | static inline struct nfs_fh *NFS_FH(const struct inode *inode) |
| 245 | { |
| 246 | return &NFS_I(inode)->fh; |
| 247 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 249 | static inline struct nfs_server *NFS_SERVER(const struct inode *inode) |
| 250 | { |
| 251 | return NFS_SB(inode->i_sb); |
| 252 | } |
| 253 | |
| 254 | static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) |
| 255 | { |
| 256 | return NFS_SERVER(inode)->client; |
| 257 | } |
| 258 | |
| 259 | static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) |
| 260 | { |
| 261 | return NFS_SERVER(inode)->nfs_client->rpc_ops; |
| 262 | } |
| 263 | |
| 264 | static inline __be32 *NFS_COOKIEVERF(const struct inode *inode) |
| 265 | { |
| 266 | return NFS_I(inode)->cookieverf; |
| 267 | } |
| 268 | |
| 269 | static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) |
| 270 | { |
| 271 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 272 | return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; |
| 273 | } |
| 274 | |
| 275 | static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) |
| 276 | { |
| 277 | struct nfs_server *nfss = NFS_SERVER(inode); |
| 278 | return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; |
| 279 | } |
| 280 | |
| 281 | static inline int NFS_STALE(const struct inode *inode) |
| 282 | { |
| 283 | return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); |
| 284 | } |
| 285 | |
David Howells | ef79c09 | 2009-04-03 16:42:43 +0100 | [diff] [blame] | 286 | static inline int NFS_FSCACHE(const struct inode *inode) |
| 287 | { |
| 288 | return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags); |
| 289 | } |
| 290 | |
Benny Halevy | 99fadcd | 2008-01-23 08:59:08 +0200 | [diff] [blame] | 291 | static inline __u64 NFS_FILEID(const struct inode *inode) |
| 292 | { |
| 293 | return NFS_I(inode)->fileid; |
| 294 | } |
| 295 | |
| 296 | static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) |
| 297 | { |
| 298 | NFS_I(inode)->fileid = fileid; |
| 299 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 301 | static inline void nfs_mark_for_revalidate(struct inode *inode) |
| 302 | { |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 303 | struct nfs_inode *nfsi = NFS_I(inode); |
| 304 | |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 305 | spin_lock(&inode->i_lock); |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 306 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; |
Trond Myklebust | f382111 | 2007-10-01 10:00:23 -0400 | [diff] [blame] | 307 | if (S_ISDIR(inode->i_mode)) |
Trond Myklebust | 38478b2 | 2006-05-25 01:40:57 -0400 | [diff] [blame] | 308 | nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 309 | spin_unlock(&inode->i_lock); |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | static inline int nfs_server_capable(struct inode *inode, int cap) |
| 313 | { |
| 314 | return NFS_SERVER(inode)->caps & cap; |
| 315 | } |
| 316 | |
| 317 | static inline int NFS_USE_READDIRPLUS(struct inode *inode) |
| 318 | { |
Benny Halevy | 3a10c30 | 2008-01-23 08:58:59 +0200 | [diff] [blame] | 319 | return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | } |
| 321 | |
Trond Myklebust | d75340c | 2007-10-01 21:42:01 -0400 | [diff] [blame] | 322 | static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) |
| 323 | { |
| 324 | dentry->d_time = verf; |
| 325 | } |
| 326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | /** |
| 328 | * nfs_save_change_attribute - Returns the inode attribute change cookie |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 329 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | * The "change attribute" is updated every time we finish an operation |
| 331 | * that will result in a metadata change on the server. |
| 332 | */ |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 333 | static inline unsigned long nfs_save_change_attribute(struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Trond Myklebust | 8edb018 | 2007-09-29 17:14:03 -0400 | [diff] [blame] | 335 | return NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | /** |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 339 | * nfs_verify_change_attribute - Detects NFS remote directory changes |
| 340 | * @dir - pointer to parent directory inode |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | * @chattr - previously saved change attribute |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 342 | * Return "false" if the verifiers doesn't match the change attribute. |
| 343 | * This would usually indicate that the directory contents have changed on |
| 344 | * the server, and that any dentries need revalidating. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | */ |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 346 | 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] | 347 | { |
Trond Myklebust | 4b84173 | 2007-09-29 17:15:01 -0400 | [diff] [blame] | 348 | return chattr == NFS_I(dir)->cache_change_attribute; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | /* |
| 352 | * linux/fs/nfs/inode.c |
| 353 | */ |
Trond Myklebust | 29884df | 2005-12-13 16:13:54 -0500 | [diff] [blame] | 354 | extern int nfs_sync_mapping(struct address_space *mapping); |
Trond Myklebust | cd9ae2b | 2006-10-19 23:28:40 -0700 | [diff] [blame] | 355 | extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | extern void nfs_zap_caches(struct inode *); |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 357 | extern void nfs_invalidate_atime(struct inode *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, |
| 359 | struct nfs_fattr *); |
| 360 | extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 361 | 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] | 362 | 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] | 363 | extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 364 | extern int nfs_permission(struct inode *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | extern int nfs_open(struct inode *, struct file *); |
| 366 | extern int nfs_release(struct inode *, struct file *); |
| 367 | extern int nfs_attribute_timeout(struct inode *inode); |
| 368 | extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); |
| 369 | extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); |
Trond Myklebust | 44b1187 | 2006-05-25 01:40:59 -0400 | [diff] [blame] | 370 | extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | extern int nfs_setattr(struct dentry *, struct iattr *); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 372 | extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); |
| 374 | extern void put_nfs_open_context(struct nfs_open_context *ctx); |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 375 | extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); |
Al Viro | 3d4ff43 | 2011-06-22 18:40:12 -0400 | [diff] [blame] | 376 | extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, struct rpc_cred *cred, fmode_t f_mode); |
Trond Myklebust | cd9a1c0 | 2010-09-17 10:56:50 -0400 | [diff] [blame] | 377 | extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); |
Trond Myklebust | f11ac8d | 2010-06-25 16:35:53 -0400 | [diff] [blame] | 378 | extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx); |
| 379 | extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx); |
Trond Myklebust | f43bf0b | 2007-10-09 12:01:04 -0400 | [diff] [blame] | 380 | extern u64 nfs_compat_user_ino64(u64 fileid); |
Trond Myklebust | 4704f0e | 2008-10-14 19:16:07 -0400 | [diff] [blame] | 381 | extern void nfs_fattr_init(struct nfs_fattr *fattr); |
Chuck Lever | 56463e5 | 2010-09-17 10:54:37 -0400 | [diff] [blame] | 382 | extern unsigned long nfs_inc_attr_generation_counter(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
Trond Myklebust | 2d36bfde | 2010-04-16 16:22:45 -0400 | [diff] [blame] | 384 | extern struct nfs_fattr *nfs_alloc_fattr(void); |
| 385 | |
| 386 | static inline void nfs_free_fattr(const struct nfs_fattr *fattr) |
| 387 | { |
| 388 | kfree(fattr); |
| 389 | } |
| 390 | |
| 391 | extern struct nfs_fh *nfs_alloc_fhandle(void); |
| 392 | |
| 393 | static inline void nfs_free_fhandle(const struct nfs_fh *fh) |
| 394 | { |
| 395 | kfree(fh); |
| 396 | } |
| 397 | |
Chuck Lever | 56463e5 | 2010-09-17 10:54:37 -0400 | [diff] [blame] | 398 | /* |
| 399 | * linux/fs/nfs/nfsroot.c |
| 400 | */ |
| 401 | extern int nfs_root_data(char **root_device, char **root_data); /*__init*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | /* 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] | 403 | extern __be32 root_nfs_parse_addr(char *name); /*__init*/ |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | /* |
| 406 | * linux/fs/nfs/file.c |
| 407 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 408 | extern const struct inode_operations nfs_file_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 409 | #ifdef CONFIG_NFS_V3 |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 410 | extern const struct inode_operations nfs3_file_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 411 | #endif /* CONFIG_NFS_V3 */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 412 | extern const struct file_operations nfs_file_operations; |
Christoph Hellwig | f5e54d6 | 2006-06-28 04:26:44 -0700 | [diff] [blame] | 413 | extern const struct address_space_operations nfs_file_aops; |
Trond Myklebust | 11de3b1 | 2010-12-01 14:17:06 -0500 | [diff] [blame] | 414 | extern const struct address_space_operations nfs_dir_aops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Trond Myklebust | c03025d | 2007-08-10 17:44:28 -0400 | [diff] [blame] | 416 | static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) |
| 417 | { |
| 418 | return filp->private_data; |
| 419 | } |
| 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | static inline struct rpc_cred *nfs_file_cred(struct file *file) |
| 422 | { |
Neil Brown | 504e518 | 2008-10-16 14:15:16 +1100 | [diff] [blame] | 423 | if (file != NULL) { |
| 424 | struct nfs_open_context *ctx = |
| 425 | nfs_file_open_context(file); |
| 426 | if (ctx) |
| 427 | return ctx->cred; |
| 428 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | return NULL; |
| 430 | } |
| 431 | |
| 432 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 433 | * linux/fs/nfs/xattr.c |
| 434 | */ |
| 435 | #ifdef CONFIG_NFS_V3_ACL |
| 436 | extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); |
| 437 | extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t); |
| 438 | extern int nfs3_setxattr(struct dentry *, const char *, |
| 439 | const void *, size_t, int); |
| 440 | extern int nfs3_removexattr (struct dentry *, const char *name); |
| 441 | #else |
| 442 | # define nfs3_listxattr NULL |
| 443 | # define nfs3_getxattr NULL |
| 444 | # define nfs3_setxattr NULL |
| 445 | # define nfs3_removexattr NULL |
| 446 | #endif |
| 447 | |
| 448 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | * linux/fs/nfs/direct.c |
| 450 | */ |
| 451 | extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, |
| 452 | unsigned long); |
Badari Pulavarty | 027445c | 2006-09-30 23:28:46 -0700 | [diff] [blame] | 453 | extern ssize_t nfs_file_direct_read(struct kiocb *iocb, |
| 454 | const struct iovec *iov, unsigned long nr_segs, |
| 455 | loff_t pos); |
| 456 | extern ssize_t nfs_file_direct_write(struct kiocb *iocb, |
| 457 | const struct iovec *iov, unsigned long nr_segs, |
| 458 | loff_t pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | |
| 460 | /* |
| 461 | * linux/fs/nfs/dir.c |
| 462 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 463 | extern const struct inode_operations nfs_dir_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 464 | #ifdef CONFIG_NFS_V3 |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 465 | extern const struct inode_operations nfs3_dir_inode_operations; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 466 | #endif /* CONFIG_NFS_V3 */ |
Arjan van de Ven | 4b6f5d2 | 2006-03-28 01:56:42 -0800 | [diff] [blame] | 467 | extern const struct file_operations nfs_dir_operations; |
Al Viro | f786aa9 | 2009-02-20 05:51:22 +0000 | [diff] [blame] | 468 | extern const struct dentry_operations nfs_dentry_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
Trond Myklebust | bfc69a4 | 2007-10-15 18:18:29 -0400 | [diff] [blame] | 470 | extern void nfs_force_lookup_revalidate(struct inode *dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | 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] | 472 | extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); |
| 473 | extern void nfs_access_zap_cache(struct inode *inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | /* |
| 476 | * linux/fs/nfs/symlink.c |
| 477 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 478 | extern const struct inode_operations nfs_symlink_inode_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
| 480 | /* |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 481 | * linux/fs/nfs/sysctl.c |
| 482 | */ |
| 483 | #ifdef CONFIG_SYSCTL |
| 484 | extern int nfs_register_sysctl(void); |
| 485 | extern void nfs_unregister_sysctl(void); |
| 486 | #else |
Stephen Rothwell | 7fd105e | 2006-02-20 18:28:08 -0800 | [diff] [blame] | 487 | #define nfs_register_sysctl() 0 |
Trond Myklebust | a72b442 | 2006-01-03 09:55:41 +0100 | [diff] [blame] | 488 | #define nfs_unregister_sysctl() do { } while(0) |
| 489 | #endif |
| 490 | |
| 491 | /* |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 492 | * linux/fs/nfs/namespace.c |
| 493 | */ |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 494 | extern const struct inode_operations nfs_mountpoint_inode_operations; |
| 495 | extern const struct inode_operations nfs_referral_inode_operations; |
Trond Myklebust | 51d8fa6 | 2006-06-09 09:34:20 -0400 | [diff] [blame] | 496 | extern int nfs_mountpoint_expiry_timeout; |
| 497 | extern void nfs_release_automount_timer(void); |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 498 | |
| 499 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | * linux/fs/nfs/unlink.c |
| 501 | */ |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 502 | extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); |
Trond Myklebust | 565277f | 2007-10-15 18:17:53 -0400 | [diff] [blame] | 503 | extern void nfs_block_sillyrename(struct dentry *dentry); |
| 504 | extern void nfs_unblock_sillyrename(struct dentry *dentry); |
Jeff Layton | 779c517 | 2010-09-17 17:31:30 -0400 | [diff] [blame] | 505 | extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | /* |
| 508 | * linux/fs/nfs/write.c |
| 509 | */ |
Peter Zijlstra | 89a0914 | 2007-03-16 13:38:26 -0800 | [diff] [blame] | 510 | extern int nfs_congestion_kb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | extern int nfs_writepage(struct page *page, struct writeback_control *wbc); |
| 512 | extern int nfs_writepages(struct address_space *, struct writeback_control *); |
| 513 | extern int nfs_flush_incompatible(struct file *file, struct page *page); |
| 514 | extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); |
Fred Isaman | 1360289 | 2011-02-11 15:42:38 +0000 | [diff] [blame] | 515 | extern void nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | /* |
| 518 | * Try to write back everything synchronously (but check the |
| 519 | * return value!) |
| 520 | */ |
Trond Myklebust | 1c75950 | 2006-10-09 16:18:38 -0400 | [diff] [blame] | 521 | extern int nfs_wb_all(struct inode *inode); |
| 522 | extern int nfs_wb_page(struct inode *inode, struct page* page); |
Trond Myklebust | 1b3b4a1 | 2007-08-28 10:29:36 -0400 | [diff] [blame] | 523 | extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) |
Trond Myklebust | b608b28 | 2010-07-30 15:31:54 -0400 | [diff] [blame] | 525 | extern int nfs_commit_inode(struct inode *, int); |
Trond Myklebust | c9d8f89 | 2008-04-15 16:56:39 -0400 | [diff] [blame] | 526 | extern struct nfs_write_data *nfs_commitdata_alloc(void); |
Trond Myklebust | 8aca67f | 2006-11-13 16:23:44 -0500 | [diff] [blame] | 527 | extern void nfs_commit_free(struct nfs_write_data *wdata); |
Trond Myklebust | 77a63f3 | 2010-08-01 13:40:40 -0400 | [diff] [blame] | 528 | #else |
| 529 | static inline int |
| 530 | nfs_commit_inode(struct inode *inode, int how) |
| 531 | { |
| 532 | return 0; |
| 533 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | #endif |
| 535 | |
| 536 | static inline int |
| 537 | nfs_have_writebacks(struct inode *inode) |
| 538 | { |
| 539 | return NFS_I(inode)->npages != 0; |
| 540 | } |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | /* |
Adrian Bunk | e4e2051 | 2006-08-03 15:07:47 -0400 | [diff] [blame] | 543 | * Allocate nfs_write_data structures |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | */ |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 545 | extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); |
Trond Myklebust | 1ae88b2 | 2009-08-12 09:12:30 -0400 | [diff] [blame] | 546 | extern void nfs_writedata_free(struct nfs_write_data *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* |
| 549 | * linux/fs/nfs/read.c |
| 550 | */ |
| 551 | extern int nfs_readpage(struct file *, struct page *); |
| 552 | extern int nfs_readpages(struct file *, struct address_space *, |
| 553 | struct list_head *, unsigned); |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 554 | extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); |
David Howells | f42b293 | 2009-04-03 16:42:44 +0100 | [diff] [blame] | 555 | extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, |
| 556 | struct page *); |
Trond Myklebust | 963d8fe | 2006-01-03 09:55:04 +0100 | [diff] [blame] | 557 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | /* |
Adrian Bunk | e4e2051 | 2006-08-03 15:07:47 -0400 | [diff] [blame] | 559 | * Allocate nfs_read_data structures |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | */ |
Trond Myklebust | 8d5658c | 2007-04-10 09:26:35 -0400 | [diff] [blame] | 561 | extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); |
Trond Myklebust | 1ae88b2 | 2009-08-12 09:12:30 -0400 | [diff] [blame] | 562 | extern void nfs_readdata_free(struct nfs_read_data *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | /* |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 565 | * linux/fs/nfs3proc.c |
| 566 | */ |
| 567 | #ifdef CONFIG_NFS_V3_ACL |
| 568 | extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); |
| 569 | extern int nfs3_proc_setacl(struct inode *inode, int type, |
| 570 | struct posix_acl *acl); |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 571 | extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, |
Al Viro | d3fb612 | 2011-07-23 18:37:50 -0400 | [diff] [blame] | 572 | umode_t mode); |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 573 | extern void nfs3_forget_cached_acls(struct inode *inode); |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 574 | #else |
| 575 | static inline int nfs3_proc_set_default_acl(struct inode *dir, |
| 576 | struct inode *inode, |
Al Viro | d3fb612 | 2011-07-23 18:37:50 -0400 | [diff] [blame] | 577 | umode_t mode) |
Andreas Gruenbacher | 055ffbe | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 578 | { |
| 579 | return 0; |
| 580 | } |
Andreas Gruenbacher | 5c6a9f7 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 581 | |
| 582 | static inline void nfs3_forget_cached_acls(struct inode *inode) |
| 583 | { |
| 584 | } |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 585 | #endif /* CONFIG_NFS_V3_ACL */ |
| 586 | |
| 587 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | * inline functions |
| 589 | */ |
| 590 | |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 591 | static inline loff_t nfs_size_to_loff_t(__u64 size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | { |
Chuck Lever | 433c923 | 2007-07-01 12:12:14 -0400 | [diff] [blame] | 593 | if (size > (__u64) OFFSET_MAX - 1) |
| 594 | return OFFSET_MAX - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | return (loff_t) size; |
| 596 | } |
| 597 | |
| 598 | static inline ino_t |
| 599 | nfs_fileid_to_ino_t(u64 fileid) |
| 600 | { |
| 601 | ino_t ino = (ino_t) fileid; |
| 602 | if (sizeof(ino_t) < sizeof(u64)) |
| 603 | ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8; |
| 604 | return ino; |
| 605 | } |
| 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) |
| 608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | #endif /* __KERNEL__ */ |
| 610 | |
| 611 | /* |
| 612 | * NFS debug flags |
| 613 | */ |
| 614 | #define NFSDBG_VFS 0x0001 |
| 615 | #define NFSDBG_DIRCACHE 0x0002 |
| 616 | #define NFSDBG_LOOKUPCACHE 0x0004 |
| 617 | #define NFSDBG_PAGECACHE 0x0008 |
| 618 | #define NFSDBG_PROC 0x0010 |
| 619 | #define NFSDBG_XDR 0x0020 |
| 620 | #define NFSDBG_FILE 0x0040 |
| 621 | #define NFSDBG_ROOT 0x0080 |
| 622 | #define NFSDBG_CALLBACK 0x0100 |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 623 | #define NFSDBG_CLIENT 0x0200 |
Chuck Lever | f182899 | 2007-07-01 12:12:51 -0400 | [diff] [blame] | 624 | #define NFSDBG_MOUNT 0x0400 |
David Howells | c6a6f19 | 2009-04-03 16:42:42 +0100 | [diff] [blame] | 625 | #define NFSDBG_FSCACHE 0x0800 |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 626 | #define NFSDBG_PNFS 0x1000 |
Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 627 | #define NFSDBG_PNFS_LD 0x2000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | #define NFSDBG_ALL 0xFFFF |
| 629 | |
| 630 | #ifdef __KERNEL__ |
Benny Halevy | 4dc2eae | 2006-12-20 22:29:46 +0200 | [diff] [blame] | 631 | |
| 632 | /* |
| 633 | * Enable debugging support for nfs client. |
| 634 | * Requires RPC_DEBUG. |
| 635 | */ |
| 636 | #ifdef RPC_DEBUG |
| 637 | # define NFS_DEBUG |
| 638 | #endif |
| 639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | # undef ifdebug |
| 641 | # ifdef NFS_DEBUG |
| 642 | # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) |
| 643 | # else |
| 644 | # define ifdebug(fac) if (0) |
| 645 | # endif |
| 646 | #endif /* __KERNEL */ |
| 647 | |
| 648 | #endif |