This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / fs / nfs / delegation.h

diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
new file mode 100644 (file)
index 0000000..3f6c45a
--- /dev/null
+++ b/fs/nfs/delegation.h
@@ -0,0 +1,57 @@
+/*
+ * linux/fs/nfs/delegation.h
+ *
+ * Copyright (c) Trond Myklebust
+ *
+ * Definitions pertaining to NFS delegated files
+ */
+#ifndef FS_NFS_DELEGATION_H
+#define FS_NFS_DELEGATION_H
+
+#if defined(CONFIG_NFS_V4)
+/*
+ * NFSv4 delegation
+ */
+struct nfs_delegation {
+       struct list_head super_list;
+       struct rpc_cred *cred;
+       struct inode *inode;
+       nfs4_stateid stateid;
+       int type;
+#define NFS_DELEGATION_NEED_RECLAIM 1
+       long flags;
+       loff_t maxsize;
+};
+
+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);
+
+struct inode *nfs_delegation_find_inode(struct nfs4_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_delegation_mark_reclaim(struct nfs4_client *clp);
+void nfs_delegation_reap_unclaimed(struct nfs4_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);
+
+static inline int nfs_have_delegation(struct inode *inode, int flags)
+{
+       flags &= FMODE_READ|FMODE_WRITE;
+       smp_rmb();
+       if ((NFS_I(inode)->delegation_state & flags) == flags)
+               return 1;
+       return 0;
+}
+#else
+static inline int nfs_have_delegation(struct inode *inode, int flags)
+{
+       return 0;
+}
+#endif
+
+#endif