52c4044d00
We would like to remove the per-lock-operation nlm_lookup_host() call from nlmclnt_proc(). The new architecture pins an nlm_host structure to each NFS client superblock that has the "lock" mount option set. The NFS client passes in the pinned nlm_host structure during each call to nlmclnt_proc(). NFS client unmount processing "puts" the nlm_host so it can be garbage- collected later. This patch introduces externally callable NLM functions that handle mount-time nlm_host set up and tear-down. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* linux/include/linux/lockd/bind.h
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*
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* This is the part of lockd visible to nfsd and the nfs client.
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*
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* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef LINUX_LOCKD_BIND_H
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#define LINUX_LOCKD_BIND_H
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#include <linux/lockd/nlm.h>
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/* need xdr-encoded error codes too, so... */
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#include <linux/lockd/xdr.h>
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#ifdef CONFIG_LOCKD_V4
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#include <linux/lockd/xdr4.h>
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#endif
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/* Dummy declarations */
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struct svc_rqst;
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/*
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* This is the set of functions for lockd->nfsd communication
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*/
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struct nlmsvc_binding {
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__be32 (*fopen)(struct svc_rqst *,
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struct nfs_fh *,
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struct file **);
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void (*fclose)(struct file *);
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unsigned long (*get_grace_period)(void);
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};
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extern struct nlmsvc_binding * nlmsvc_ops;
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/*
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* Functions exported by the lockd module
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*/
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extern struct nlm_host *nlmclnt_init(const char *server_name,
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const struct sockaddr *server_address,
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size_t server_addrlen,
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unsigned short protocol,
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u32 nfs_version);
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extern void nlmclnt_done(struct nlm_host *host);
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extern int nlmclnt_proc(struct inode *, int, struct file_lock *);
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extern int lockd_up(int proto);
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extern void lockd_down(void);
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unsigned long get_nfs_grace_period(void);
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#ifdef CONFIG_NFSD_V4
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unsigned long get_nfs4_grace_period(void);
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#else
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static inline unsigned long get_nfs4_grace_period(void) {return 0;}
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#endif
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#endif /* LINUX_LOCKD_BIND_H */
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