2 * linux/fs/nfs/delegation.h
4 * Copyright (c) Trond Myklebust
6 * Definitions pertaining to NFS delegated files
8 #ifndef FS_NFS_DELEGATION_H
9 #define FS_NFS_DELEGATION_H
11 #if defined(CONFIG_NFS_V4)
15 struct nfs_delegation
{
16 struct list_head super_list
;
17 struct rpc_cred
*cred
;
21 #define NFS_DELEGATION_NEED_RECLAIM 1
27 int nfs_inode_set_delegation(struct inode
*inode
, struct rpc_cred
*cred
, struct nfs_openres
*res
);
28 void nfs_inode_reclaim_delegation(struct inode
*inode
, struct rpc_cred
*cred
, struct nfs_openres
*res
);
29 int __nfs_inode_return_delegation(struct inode
*inode
);
30 int nfs_async_inode_return_delegation(struct inode
*inode
, const nfs4_stateid
*stateid
);
32 struct inode
*nfs_delegation_find_inode(struct nfs4_client
*clp
, const struct nfs_fh
*fhandle
);
33 void nfs_return_all_delegations(struct super_block
*sb
);
34 void nfs_expire_all_delegations(struct nfs4_client
*clp
);
35 void nfs_handle_cb_pathdown(struct nfs4_client
*clp
);
37 void nfs_delegation_mark_reclaim(struct nfs4_client
*clp
);
38 void nfs_delegation_reap_unclaimed(struct nfs4_client
*clp
);
40 /* NFSv4 delegation-related procedures */
41 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
);
42 int nfs4_open_delegation_recall(struct dentry
*dentry
, struct nfs4_state
*state
);
43 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
);
45 static inline int nfs_have_delegation(struct inode
*inode
, int flags
)
47 flags
&= FMODE_READ
|FMODE_WRITE
;
49 if ((NFS_I(inode
)->delegation_state
& flags
) == flags
)
54 static inline int nfs_inode_return_delegation(struct inode
*inode
)
58 if (NFS_I(inode
)->delegation
!= NULL
)
59 err
= __nfs_inode_return_delegation(inode
);
63 static inline int nfs_have_delegation(struct inode
*inode
, int flags
)
68 static inline int nfs_inode_return_delegation(struct inode
*inode
)
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