1 /* SPDX-License-Identifier: GPL-2.0 */
3 * include/linux/nfs_ssc.h
5 * Author: Dai Ngo <dai.ngo@oracle.com>
7 * Copyright (c) 2020, Oracle and/or its affiliates.
10 #include <linux/nfs_fs.h>
12 extern struct nfs_ssc_client_ops_tbl nfs_ssc_client_tbl;
17 struct nfs4_ssc_client_ops {
18 struct file *(*sco_open)(struct vfsmount *ss_mnt,
19 struct nfs_fh *src_fh, nfs4_stateid *stateid);
20 void (*sco_close)(struct file *filep);
26 struct nfs_ssc_client_ops {
27 void (*sco_sb_deactive)(struct super_block *sb);
30 struct nfs_ssc_client_ops_tbl {
31 const struct nfs4_ssc_client_ops *ssc_nfs4_ops;
32 const struct nfs_ssc_client_ops *ssc_nfs_ops;
35 extern void nfs42_ssc_register_ops(void);
36 extern void nfs42_ssc_unregister_ops(void);
38 extern void nfs42_ssc_register(const struct nfs4_ssc_client_ops *ops);
39 extern void nfs42_ssc_unregister(const struct nfs4_ssc_client_ops *ops);
41 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
42 static inline struct file *nfs42_ssc_open(struct vfsmount *ss_mnt,
43 struct nfs_fh *src_fh, nfs4_stateid *stateid)
45 if (nfs_ssc_client_tbl.ssc_nfs4_ops)
46 return (*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_open)(ss_mnt, src_fh, stateid);
50 static inline void nfs42_ssc_close(struct file *filep)
52 if (nfs_ssc_client_tbl.ssc_nfs4_ops)
53 (*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_close)(filep);
60 extern void nfs_ssc_register(const struct nfs_ssc_client_ops *ops);
61 extern void nfs_ssc_unregister(const struct nfs_ssc_client_ops *ops);
63 static inline void nfs_do_sb_deactive(struct super_block *sb)
65 if (nfs_ssc_client_tbl.ssc_nfs_ops)
66 (*nfs_ssc_client_tbl.ssc_nfs_ops->sco_sb_deactive)(sb);