NFSD: Remove NFSv4 dependency on NFSv3

[safe/jmp/linux-2.6] / fs / nfs / delegation.h

diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 3f6c45a..f1c5e2a 100644 (file)
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -21,37 +21,54 @@ struct nfs_delegation {
 #define NFS_DELEGATION_NEED_RECLAIM 1
        long flags;
        loff_t maxsize;
+       __u64 change_attr;
+       struct rcu_head rcu;
 };
 
 int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
 void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
 int nfs_inode_return_delegation(struct inode *inode);
 int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
+void nfs_inode_return_delegation_noreclaim(struct inode *inode);
 
-struct inode *nfs_delegation_find_inode(struct nfs4_client *clp, const struct nfs_fh *fhandle);
+struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
 void nfs_return_all_delegations(struct super_block *sb);
-void nfs_handle_cb_pathdown(struct nfs4_client *clp);
+void nfs_expire_all_delegations(struct nfs_client *clp);
+void nfs_handle_cb_pathdown(struct nfs_client *clp);
 
-void nfs_delegation_mark_reclaim(struct nfs4_client *clp);
-void nfs_delegation_reap_unclaimed(struct nfs4_client *clp);
+void nfs_delegation_mark_reclaim(struct nfs_client *clp);
+void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
 
 /* NFSv4 delegation-related procedures */
-int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
-int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state);
+int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
+int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
+int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);
 
 static inline int nfs_have_delegation(struct inode *inode, int flags)
 {
+       struct nfs_delegation *delegation;
+       int ret = 0;
+
        flags &= FMODE_READ|FMODE_WRITE;
-       smp_rmb();
-       if ((NFS_I(inode)->delegation_state & flags) == flags)
-               return 1;
-       return 0;
+       rcu_read_lock();
+       delegation = rcu_dereference(NFS_I(inode)->delegation);
+       if (delegation != NULL && (delegation->type & flags) == flags)
+               ret = 1;
+       rcu_read_unlock();
+       return ret;
 }
+
 #else
 static inline int nfs_have_delegation(struct inode *inode, int flags)
 {
        return 0;
 }
+
+static inline int nfs_inode_return_delegation(struct inode *inode)
+{
+       return 0;
+}
 #endif
 
 #endif