| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * include/linux/nfs_ssc.h |
| * |
| * Author: Dai Ngo <dai.ngo@oracle.com> |
| * |
| * Copyright (c) 2020, Oracle and/or its affiliates. |
| */ |
| |
| #include <linux/nfs_fs.h> |
| |
| extern struct nfs_ssc_client_ops_tbl nfs_ssc_client_tbl; |
| |
| /* |
| * NFS_V4 |
| */ |
| struct nfs4_ssc_client_ops { |
| struct file *(*sco_open)(struct vfsmount *ss_mnt, |
| struct nfs_fh *src_fh, nfs4_stateid *stateid); |
| void (*sco_close)(struct file *filep); |
| }; |
| |
| /* |
| * NFS_FS |
| */ |
| struct nfs_ssc_client_ops { |
| void (*sco_sb_deactive)(struct super_block *sb); |
| }; |
| |
| struct nfs_ssc_client_ops_tbl { |
| const struct nfs4_ssc_client_ops *ssc_nfs4_ops; |
| const struct nfs_ssc_client_ops *ssc_nfs_ops; |
| }; |
| |
| extern void nfs42_ssc_register_ops(void); |
| extern void nfs42_ssc_unregister_ops(void); |
| |
| extern void nfs42_ssc_register(const struct nfs4_ssc_client_ops *ops); |
| extern void nfs42_ssc_unregister(const struct nfs4_ssc_client_ops *ops); |
| |
| #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
| static inline struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, |
| struct nfs_fh *src_fh, nfs4_stateid *stateid) |
| { |
| if (nfs_ssc_client_tbl.ssc_nfs4_ops) |
| return (*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_open)(ss_mnt, src_fh, stateid); |
| return ERR_PTR(-EIO); |
| } |
| |
| static inline void nfs42_ssc_close(struct file *filep) |
| { |
| if (nfs_ssc_client_tbl.ssc_nfs4_ops) |
| (*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_close)(filep); |
| } |
| #endif |
| |
| /* |
| * NFS_FS |
| */ |
| extern void nfs_ssc_register(const struct nfs_ssc_client_ops *ops); |
| extern void nfs_ssc_unregister(const struct nfs_ssc_client_ops *ops); |
| |
| static inline void nfs_do_sb_deactive(struct super_block *sb) |
| { |
| if (nfs_ssc_client_tbl.ssc_nfs_ops) |
| (*nfs_ssc_client_tbl.ssc_nfs_ops->sco_sb_deactive)(sb); |
| } |