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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182/* 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>#include <linux/sunrpc/svc.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_SSCstatic 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
struct nfsd4_ssc_umount_item { struct list_head nsui_list; bool nsui_busy; /* * nsui_refcnt inited to 2, 1 on list and 1 for consumer. Entry * is removed when refcnt drops to 1 and nsui_expire expires. */ refcount_t nsui_refcnt; unsigned long nsui_expire; struct vfsmount *nsui_vfsmount; char nsui_ipaddr[RPC_MAX_ADDRBUFLEN + 1];};
/* * 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);}