1 files changed, 27 insertions, 4 deletions

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 3c8373f90ab3..d388302c005f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -5,6 +5,7 @@
 #include "nfs4_fs.h"
 #include <linux/mount.h>
 #include <linux/security.h>
+#include <linux/crc32.h>
 
 #define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS)
 
@@ -185,6 +186,8 @@ extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
                                              int ds_addrlen, int ds_proto,
                                              unsigned int ds_timeo,
                                              unsigned int ds_retrans);
+extern struct rpc_clnt *nfs4_find_or_create_ds_client(struct nfs_client *,
+                                                struct inode *);
 #ifdef CONFIG_PROC_FS
 extern int __init nfs_fs_proc_init(void);
 extern void nfs_fs_proc_exit(void);
@@ -267,7 +270,7 @@ extern struct rpc_procinfo nfs4_procedures[];
 void nfs_close_context(struct nfs_open_context *ctx, int is_sync);
 extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
                            const struct rpc_timeout *timeparms,
-                           const char *ip_addr, rpc_authflavor_t authflavour);
+                           const char *ip_addr);
 
 /* dir.c */
 extern int nfs_access_cache_shrinker(struct shrinker *shrink,
@@ -355,7 +358,7 @@ extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
 extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
                                     const char *);
 
-extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh);
+extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool);
 #endif
 
 struct nfs_pgio_completion_ops;
@@ -430,6 +433,8 @@ void nfs_request_remove_commit_list(struct nfs_page *req,
 void nfs_init_cinfo(struct nfs_commit_info *cinfo,
                     struct inode *inode,
                     struct nfs_direct_req *dreq);
+int nfs_key_timeout_notify(struct file *filp, struct inode *inode);
+bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx);
 
 #ifdef CONFIG_MIGRATION
 extern int nfs_migrate_page(struct address_space *,
@@ -451,8 +456,7 @@ extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq);
 extern void __nfs4_read_done_cb(struct nfs_read_data *);
 extern struct nfs_client *nfs4_init_client(struct nfs_client *clp,
                             const struct rpc_timeout *timeparms,
-                            const char *ip_addr,
-                            rpc_authflavor_t authflavour);
+                            const char *ip_addr);
 extern int nfs40_walk_client_list(struct nfs_client *clp,
                                 struct nfs_client **result,
                                 struct rpc_cred *cred);
@@ -575,3 +579,22 @@ u64 nfs_timespec_to_change_attr(const struct timespec *ts)
 {
         return ((u64)ts->tv_sec << 30) + ts->tv_nsec;
 }
+
+#ifdef CONFIG_CRC32
+/**
+ * nfs_fhandle_hash - calculate the crc32 hash for the filehandle
+ * @fh - pointer to filehandle
+ *
+ * returns a crc32 hash for the filehandle that is compatible with
+ * the one displayed by "wireshark".
+ */
+static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
+{
+        return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size);
+}
+#else
+static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
+{
+        return 0;
+}
+#endif