Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
new file mode 100644
index 0000000..dbac7f3
--- /dev/null
+++ b/include/linux/nfs_fs.h
@@ -0,0 +1,767 @@
+/*
+ * linux/include/linux/nfs_fs.h
+ *
+ * Copyright (C) 1992 Rick Sladkey
+ *
+ * OS-specific nfs filesystem definitions and declarations
+ */
+
+#ifndef _LINUX_NFS_FS_H
+#define _LINUX_NFS_FS_H
+
+#include <linux/config.h>
+#include <linux/in.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/rwsem.h>
+#include <linux/wait.h>
+#include <linux/uio.h>
+
+#include <linux/nfs_fs_sb.h>
+
+#include <linux/sunrpc/debug.h>
+#include <linux/sunrpc/auth.h>
+#include <linux/sunrpc/clnt.h>
+
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+#include <linux/nfs_xdr.h>
+#include <linux/rwsem.h>
+#include <linux/workqueue.h>
+#include <linux/mempool.h>
+
+/*
+ * Enable debugging support for nfs client.
+ * Requires RPC_DEBUG.
+ */
+#ifdef RPC_DEBUG
+# define NFS_DEBUG
+#endif
+
+#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768
+#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
+
+/*
+ * The upper limit on timeouts for the exponential backoff algorithm.
+ */
+#define NFS_WRITEBACK_DELAY (5*HZ)
+#define NFS_WRITEBACK_LOCKDELAY (60*HZ)
+#define NFS_COMMIT_DELAY (5*HZ)
+
+/*
+ * superblock magic number for NFS
+ */
+#define NFS_SUPER_MAGIC 0x6969
+
+/*
+ * These are the default flags for swap requests
+ */
+#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
+
+#define NFS_RW_SYNC 0x0001 /* O_SYNC handling */
+#define NFS_RW_SWAP 0x0002 /* This is a swap request */
+
+/*
+ * When flushing a cluster of dirty pages, there can be different
+ * strategies:
+ */
+#define FLUSH_AGING 0 /* only flush old buffers */
+#define FLUSH_SYNC 1 /* file being synced, or contention */
+#define FLUSH_WAIT 2 /* wait for completion */
+#define FLUSH_STABLE 4 /* commit to stable storage */
+#define FLUSH_LOWPRI 8 /* low priority background flush */
+#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */
+
+#ifdef __KERNEL__
+
+/*
+ * NFSv3/v4 Access mode cache entry
+ */
+struct nfs_access_entry {
+ unsigned long jiffies;
+ struct rpc_cred * cred;
+ int mask;
+};
+
+struct nfs4_state;
+struct nfs_open_context {
+ atomic_t count;
+ struct dentry *dentry;
+ struct rpc_cred *cred;
+ struct nfs4_state *state;
+ fl_owner_t lockowner;
+ int mode;
+ int error;
+
+ struct list_head list;
+ wait_queue_head_t waitq;
+};
+
+/*
+ * NFSv4 delegation
+ */
+struct nfs_delegation;
+
+/*
+ * nfs fs inode data in memory
+ */
+struct nfs_inode {
+ /*
+ * The 64bit 'inode number'
+ */
+ __u64 fileid;
+
+ /*
+ * NFS file handle
+ */
+ struct nfs_fh fh;
+
+ /*
+ * Various flags
+ */
+ unsigned int flags;
+
+ /*
+ * read_cache_jiffies is when we started read-caching this inode,
+ * and read_cache_mtime is the mtime of the inode at that time.
+ * attrtimeo is for how long the cached information is assumed
+ * to be valid. A successful attribute revalidation doubles
+ * attrtimeo (up to acregmax/acdirmax), a failure resets it to
+ * acregmin/acdirmin.
+ *
+ * We need to revalidate the cached attrs for this inode if
+ *
+ * jiffies - read_cache_jiffies > attrtimeo
+ *
+ * and invalidate any cached data/flush out any dirty pages if
+ * we find that
+ *
+ * mtime != read_cache_mtime
+ */
+ unsigned long readdir_timestamp;
+ unsigned long read_cache_jiffies;
+ unsigned long attrtimeo;
+ unsigned long attrtimeo_timestamp;
+ __u64 change_attr; /* v4 only */
+
+ /* "Generation counter" for the attribute cache. This is
+ * bumped whenever we update the metadata on the
+ * server.
+ */
+ unsigned long cache_change_attribute;
+ /*
+ * Counter indicating the number of outstanding requests that
+ * will cause a file data update.
+ */
+ atomic_t data_updates;
+
+ struct nfs_access_entry cache_access;
+
+ /*
+ * This is the cookie verifier used for NFSv3 readdir
+ * operations
+ */
+ __u32 cookieverf[2];
+
+ /*
+ * This is the list of dirty unwritten pages.
+ */
+ spinlock_t req_lock;
+ struct list_head dirty;
+ struct list_head commit;
+ struct radix_tree_root nfs_page_tree;
+
+ unsigned int ndirty,
+ ncommit,
+ npages;
+
+ /* Open contexts for shared mmap writes */
+ struct list_head open_files;
+
+ wait_queue_head_t nfs_i_wait;
+
+#ifdef CONFIG_NFS_V4
+ /* NFSv4 state */
+ struct list_head open_states;
+ struct nfs_delegation *delegation;
+ int delegation_state;
+ struct rw_semaphore rwsem;
+#endif /* CONFIG_NFS_V4*/
+
+ struct inode vfs_inode;
+};
+
+/*
+ * Legal inode flag values
+ */
+#define NFS_INO_STALE 0x0001 /* possible stale inode */
+#define NFS_INO_ADVISE_RDPLUS 0x0002 /* advise readdirplus */
+#define NFS_INO_REVALIDATING 0x0004 /* revalidating attrs */
+#define NFS_INO_INVALID_ATTR 0x0008 /* cached attrs are invalid */
+#define NFS_INO_INVALID_DATA 0x0010 /* cached data is invalid */
+#define NFS_INO_INVALID_ATIME 0x0020 /* cached atime is invalid */
+#define NFS_INO_INVALID_ACCESS 0x0040 /* cached access cred invalid */
+
+static inline struct nfs_inode *NFS_I(struct inode *inode)
+{
+ return container_of(inode, struct nfs_inode, vfs_inode);
+}
+#define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info))
+
+#define NFS_FH(inode) (&NFS_I(inode)->fh)
+#define NFS_SERVER(inode) (NFS_SB(inode->i_sb))
+#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client)
+#define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops)
+#define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode)))
+#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf)
+#define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies)
+#define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr)
+#define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo)
+#define NFS_MINATTRTIMEO(inode) \
+ (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \
+ : NFS_SERVER(inode)->acregmin)
+#define NFS_MAXATTRTIMEO(inode) \
+ (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \
+ : NFS_SERVER(inode)->acregmax)
+#define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp)
+
+#define NFS_FLAGS(inode) (NFS_I(inode)->flags)
+#define NFS_REVALIDATING(inode) (NFS_FLAGS(inode) & NFS_INO_REVALIDATING)
+#define NFS_STALE(inode) (NFS_FLAGS(inode) & NFS_INO_STALE)
+
+#define NFS_FILEID(inode) (NFS_I(inode)->fileid)
+
+static inline int nfs_caches_unstable(struct inode *inode)
+{
+ return atomic_read(&NFS_I(inode)->data_updates) != 0;
+}
+
+static inline void NFS_CACHEINV(struct inode *inode)
+{
+ if (!nfs_caches_unstable(inode))
+ NFS_FLAGS(inode) |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+}
+
+static inline int nfs_server_capable(struct inode *inode, int cap)
+{
+ return NFS_SERVER(inode)->caps & cap;
+}
+
+static inline int NFS_USE_READDIRPLUS(struct inode *inode)
+{
+ return NFS_FLAGS(inode) & NFS_INO_ADVISE_RDPLUS;
+}
+
+/**
+ * nfs_save_change_attribute - Returns the inode attribute change cookie
+ * @inode - pointer to inode
+ * The "change attribute" is updated every time we finish an operation
+ * that will result in a metadata change on the server.
+ */
+static inline long nfs_save_change_attribute(struct inode *inode)
+{
+ return NFS_I(inode)->cache_change_attribute;
+}
+
+/**
+ * nfs_verify_change_attribute - Detects NFS inode cache updates
+ * @inode - pointer to inode
+ * @chattr - previously saved change attribute
+ * Return "false" if metadata has been updated (or is in the process of
+ * being updated) since the change attribute was saved.
+ */
+static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr)
+{
+ return !nfs_caches_unstable(inode)
+ && chattr == NFS_I(inode)->cache_change_attribute;
+}
+
+/*
+ * linux/fs/nfs/inode.c
+ */
+extern void nfs_zap_caches(struct inode *);
+extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
+ struct nfs_fattr *);
+extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *);
+extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+extern int nfs_permission(struct inode *, int, struct nameidata *);
+extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *);
+extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *);
+extern int nfs_open(struct inode *, struct file *);
+extern int nfs_release(struct inode *, struct file *);
+extern int nfs_attribute_timeout(struct inode *inode);
+extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode);
+extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
+extern int nfs_setattr(struct dentry *, struct iattr *);
+extern void nfs_begin_attr_update(struct inode *);
+extern void nfs_end_attr_update(struct inode *);
+extern void nfs_begin_data_update(struct inode *);
+extern void nfs_end_data_update(struct inode *);
+extern void nfs_end_data_update_defer(struct inode *);
+extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, struct rpc_cred *cred);
+extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
+extern void put_nfs_open_context(struct nfs_open_context *ctx);
+extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx);
+extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, int mode);
+extern void nfs_file_clear_open_context(struct file *filp);
+
+/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
+extern u32 root_nfs_parse_addr(char *name); /*__init*/
+
+/*
+ * linux/fs/nfs/file.c
+ */
+extern struct inode_operations nfs_file_inode_operations;
+extern struct file_operations nfs_file_operations;
+extern struct address_space_operations nfs_file_aops;
+
+static inline struct rpc_cred *nfs_file_cred(struct file *file)
+{
+ if (file != NULL) {
+ struct nfs_open_context *ctx;
+
+ ctx = (struct nfs_open_context*)file->private_data;
+ return ctx->cred;
+ }
+ return NULL;
+}
+
+/*
+ * linux/fs/nfs/direct.c
+ */
+extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t,
+ unsigned long);
+extern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf,
+ size_t count, loff_t pos);
+extern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf,
+ size_t count, loff_t pos);
+
+/*
+ * linux/fs/nfs/dir.c
+ */
+extern struct inode_operations nfs_dir_inode_operations;
+extern struct file_operations nfs_dir_operations;
+extern struct dentry_operations nfs_dentry_operations;
+
+extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
+
+/*
+ * linux/fs/nfs/symlink.c
+ */
+extern struct inode_operations nfs_symlink_inode_operations;
+
+/*
+ * linux/fs/nfs/unlink.c
+ */
+extern int nfs_async_unlink(struct dentry *);
+extern void nfs_complete_unlink(struct dentry *);
+
+/*
+ * linux/fs/nfs/write.c
+ */
+extern int nfs_writepage(struct page *page, struct writeback_control *wbc);
+extern int nfs_writepages(struct address_space *, struct writeback_control *);
+extern int nfs_flush_incompatible(struct file *file, struct page *page);
+extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
+extern void nfs_writeback_done(struct rpc_task *task);
+
+#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+extern void nfs_commit_done(struct rpc_task *);
+#endif
+
+/*
+ * Try to write back everything synchronously (but check the
+ * return value!)
+ */
+extern int nfs_sync_inode(struct inode *, unsigned long, unsigned int, int);
+#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
+extern int nfs_commit_inode(struct inode *, unsigned long, unsigned int, int);
+#else
+static inline int
+nfs_commit_inode(struct inode *inode, unsigned long idx_start, unsigned int npages, int how)
+{
+ return 0;
+}
+#endif
+
+static inline int
+nfs_have_writebacks(struct inode *inode)
+{
+ return NFS_I(inode)->npages != 0;
+}
+
+static inline int
+nfs_wb_all(struct inode *inode)
+{
+ int error = nfs_sync_inode(inode, 0, 0, FLUSH_WAIT);
+ return (error < 0) ? error : 0;
+}
+
+/*
+ * Write back all requests on one page - we do this before reading it.
+ */
+static inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how)
+{
+ int error = nfs_sync_inode(inode, page->index, 1,
+ how | FLUSH_WAIT | FLUSH_STABLE);
+ return (error < 0) ? error : 0;
+}
+
+static inline int nfs_wb_page(struct inode *inode, struct page* page)
+{
+ return nfs_wb_page_priority(inode, page, 0);
+}
+
+/*
+ * Allocate and free nfs_write_data structures
+ */
+extern mempool_t *nfs_wdata_mempool;
+
+static inline struct nfs_write_data *nfs_writedata_alloc(void)
+{
+ struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, SLAB_NOFS);
+ if (p) {
+ memset(p, 0, sizeof(*p));
+ INIT_LIST_HEAD(&p->pages);
+ }
+ return p;
+}
+
+static inline void nfs_writedata_free(struct nfs_write_data *p)
+{
+ mempool_free(p, nfs_wdata_mempool);
+}
+
+/* Hack for future NFS swap support */
+#ifndef IS_SWAPFILE
+# define IS_SWAPFILE(inode) (0)
+#endif
+
+/*
+ * linux/fs/nfs/read.c
+ */
+extern int nfs_readpage(struct file *, struct page *);
+extern int nfs_readpages(struct file *, struct address_space *,
+ struct list_head *, unsigned);
+extern void nfs_readpage_result(struct rpc_task *);
+
+/*
+ * Allocate and free nfs_read_data structures
+ */
+extern mempool_t *nfs_rdata_mempool;
+
+static inline struct nfs_read_data *nfs_readdata_alloc(void)
+{
+ struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS);
+ if (p)
+ memset(p, 0, sizeof(*p));
+ return p;
+}
+
+static inline void nfs_readdata_free(struct nfs_read_data *p)
+{
+ mempool_free(p, nfs_rdata_mempool);
+}
+
+extern void nfs_readdata_release(struct rpc_task *task);
+
+/*
+ * linux/fs/mount_clnt.c
+ * (Used only by nfsroot module)
+ */
+extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *,
+ int, int);
+
+/*
+ * inline functions
+ */
+
+static inline loff_t
+nfs_size_to_loff_t(__u64 size)
+{
+ loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1;
+ if (size > maxsz)
+ return maxsz;
+ return (loff_t) size;
+}
+
+static inline ino_t
+nfs_fileid_to_ino_t(u64 fileid)
+{
+ ino_t ino = (ino_t) fileid;
+ if (sizeof(ino_t) < sizeof(u64))
+ ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
+ return ino;
+}
+
+/* NFS root */
+
+extern void * nfs_root_data(void);
+
+#define nfs_wait_event(clnt, wq, condition) \
+({ \
+ int __retval = 0; \
+ if (clnt->cl_intr) { \
+ sigset_t oldmask; \
+ rpc_clnt_sigmask(clnt, &oldmask); \
+ __retval = wait_event_interruptible(wq, condition); \
+ rpc_clnt_sigunmask(clnt, &oldmask); \
+ } else \
+ wait_event(wq, condition); \
+ __retval; \
+})
+
+#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
+
+#ifdef CONFIG_NFS_V4
+
+struct idmap;
+
+/*
+ * In a seqid-mutating op, this macro controls which error return
+ * values trigger incrementation of the seqid.
+ *
+ * from rfc 3010:
+ * The client MUST monotonically increment the sequence number for the
+ * CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
+ * operations. This is true even in the event that the previous
+ * operation that used the sequence number received an error. The only
+ * exception to this rule is if the previous operation received one of
+ * the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
+ * NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
+ * NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
+ *
+ */
+#define seqid_mutating_err(err) \
+(((err) != NFSERR_STALE_CLIENTID) && \
+ ((err) != NFSERR_STALE_STATEID) && \
+ ((err) != NFSERR_BAD_STATEID) && \
+ ((err) != NFSERR_BAD_SEQID) && \
+ ((err) != NFSERR_BAD_XDR) && \
+ ((err) != NFSERR_RESOURCE) && \
+ ((err) != NFSERR_NOFILEHANDLE))
+
+enum nfs4_client_state {
+ NFS4CLNT_OK = 0,
+};
+
+/*
+ * The nfs4_client identifies our client state to the server.
+ */
+struct nfs4_client {
+ struct list_head cl_servers; /* Global list of servers */
+ struct in_addr cl_addr; /* Server identifier */
+ u64 cl_clientid; /* constant */
+ nfs4_verifier cl_confirm;
+ unsigned long cl_state;
+
+ u32 cl_lockowner_id;
+
+ /*
+ * The following rwsem ensures exclusive access to the server
+ * while we recover the state following a lease expiration.
+ */
+ struct rw_semaphore cl_sem;
+
+ struct list_head cl_delegations;
+ struct list_head cl_state_owners;
+ struct list_head cl_unused;
+ int cl_nunused;
+ spinlock_t cl_lock;
+ atomic_t cl_count;
+
+ struct rpc_clnt * cl_rpcclient;
+ struct rpc_cred * cl_cred;
+
+ struct list_head cl_superblocks; /* List of nfs_server structs */
+
+ unsigned long cl_lease_time;
+ unsigned long cl_last_renewal;
+ struct work_struct cl_renewd;
+ struct work_struct cl_recoverd;
+
+ wait_queue_head_t cl_waitq;
+ struct rpc_wait_queue cl_rpcwaitq;
+
+ /* used for the setclientid verifier */
+ struct timespec cl_boot_time;
+
+ /* idmapper */
+ struct idmap * cl_idmap;
+
+ /* Our own IP address, as a null-terminated string.
+ * This is used to generate the clientid, and the callback address.
+ */
+ char cl_ipaddr[16];
+ unsigned char cl_id_uniquifier;
+};
+
+/*
+ * NFS4 state_owners and lock_owners are simply labels for ordered
+ * sequences of RPC calls. Their sole purpose is to provide once-only
+ * semantics by allowing the server to identify replayed requests.
+ *
+ * The ->so_sema is held during all state_owner seqid-mutating operations:
+ * OPEN, OPEN_DOWNGRADE, and CLOSE. Its purpose is to properly serialize
+ * so_seqid.
+ */
+struct nfs4_state_owner {
+ struct list_head so_list; /* per-clientid list of state_owners */
+ struct nfs4_client *so_client;
+ u32 so_id; /* 32-bit identifier, unique */
+ struct semaphore so_sema;
+ u32 so_seqid; /* protected by so_sema */
+ atomic_t so_count;
+
+ struct rpc_cred *so_cred; /* Associated cred */
+ struct list_head so_states;
+ struct list_head so_delegations;
+};
+
+/*
+ * struct nfs4_state maintains the client-side state for a given
+ * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
+ *
+ * OPEN:
+ * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
+ * we need to know how many files are open for reading or writing on a
+ * given inode. This information too is stored here.
+ *
+ * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
+ */
+
+struct nfs4_lock_state {
+ struct list_head ls_locks; /* Other lock stateids */
+ fl_owner_t ls_owner; /* POSIX lock owner */
+#define NFS_LOCK_INITIALIZED 1
+ int ls_flags;
+ u32 ls_seqid;
+ u32 ls_id;
+ nfs4_stateid ls_stateid;
+ atomic_t ls_count;
+};
+
+/* bits for nfs4_state->flags */
+enum {
+ LK_STATE_IN_USE,
+ NFS_DELEGATED_STATE,
+};
+
+struct nfs4_state {
+ struct list_head open_states; /* List of states for the same state_owner */
+ struct list_head inode_states; /* List of states for the same inode */
+ struct list_head lock_states; /* List of subservient lock stateids */
+
+ struct nfs4_state_owner *owner; /* Pointer to the open owner */
+ struct inode *inode; /* Pointer to the inode */
+
+ unsigned long flags; /* Do we hold any locks? */
+ struct semaphore lock_sema; /* Serializes file locking operations */
+ rwlock_t state_lock; /* Protects the lock_states list */
+
+ nfs4_stateid stateid;
+
+ unsigned int nreaders;
+ unsigned int nwriters;
+ int state; /* State on the server (R,W, or RW) */
+ atomic_t count;
+};
+
+
+struct nfs4_exception {
+ long timeout;
+ int retry;
+};
+
+struct nfs4_state_recovery_ops {
+ int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *);
+ int (*recover_lock)(struct nfs4_state *, struct file_lock *);
+};
+
+extern struct dentry_operations nfs4_dentry_operations;
+extern struct inode_operations nfs4_dir_inode_operations;
+
+/* nfs4proc.c */
+extern int nfs4_map_errors(int err);
+extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);
+extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);
+extern int nfs4_proc_async_renew(struct nfs4_client *);
+extern int nfs4_proc_renew(struct nfs4_client *);
+extern int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode);
+extern struct inode *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
+extern int nfs4_open_revalidate(struct inode *, struct dentry *, int);
+
+extern struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops;
+extern struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops;
+
+/* nfs4renewd.c */
+extern void nfs4_schedule_state_renewal(struct nfs4_client *);
+extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
+extern void nfs4_kill_renewd(struct nfs4_client *);
+
+/* nfs4state.c */
+extern void init_nfsv4_state(struct nfs_server *);
+extern void destroy_nfsv4_state(struct nfs_server *);
+extern struct nfs4_client *nfs4_get_client(struct in_addr *);
+extern void nfs4_put_client(struct nfs4_client *clp);
+extern int nfs4_init_client(struct nfs4_client *clp);
+extern struct nfs4_client *nfs4_find_client(struct in_addr *);
+extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);
+
+extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
+extern void nfs4_put_state_owner(struct nfs4_state_owner *);
+extern void nfs4_drop_state_owner(struct nfs4_state_owner *);
+extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
+extern void nfs4_put_open_state(struct nfs4_state *);
+extern void nfs4_close_state(struct nfs4_state *, mode_t);
+extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
+extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
+extern void nfs4_schedule_state_recovery(struct nfs4_client *);
+extern struct nfs4_lock_state *nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t);
+extern struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t);
+extern void nfs4_put_lock_state(struct nfs4_lock_state *state);
+extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
+extern void nfs4_notify_setlk(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
+extern void nfs4_notify_unlck(struct nfs4_state *, struct file_lock *, struct nfs4_lock_state *);
+extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
+
+
+
+struct nfs4_mount_data;
+#else
+#define init_nfsv4_state(server) do { } while (0)
+#define destroy_nfsv4_state(server) do { } while (0)
+#define nfs4_put_state_owner(inode, owner) do { } while (0)
+#define nfs4_put_open_state(state) do { } while (0)
+#define nfs4_close_state(a, b) do { } while (0)
+#define nfs4_renewd_prepare_shutdown(server) do { } while (0)
+#endif
+
+#endif /* __KERNEL__ */
+
+/*
+ * NFS debug flags
+ */
+#define NFSDBG_VFS 0x0001
+#define NFSDBG_DIRCACHE 0x0002
+#define NFSDBG_LOOKUPCACHE 0x0004
+#define NFSDBG_PAGECACHE 0x0008
+#define NFSDBG_PROC 0x0010
+#define NFSDBG_XDR 0x0020
+#define NFSDBG_FILE 0x0040
+#define NFSDBG_ROOT 0x0080
+#define NFSDBG_CALLBACK 0x0100
+#define NFSDBG_ALL 0xFFFF
+
+#ifdef __KERNEL__
+# undef ifdebug
+# ifdef NFS_DEBUG
+# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac))
+# else
+# define ifdebug(fac) if (0)
+# endif
+#endif /* __KERNEL */
+
+#endif