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d343fce148
It is possible for the ->fopen callback from lockd into nfsd to find that an answer cannot be given straight away (an upcall is needed) and so the request has to be 'dropped', to be retried later. That error status is not currently propagated back. So: Change nlm_fopen to return nlm error codes (rather than a private protocol) and define a new nlm_drop_reply code. Cause nlm_drop_reply to cause the rpc request to get rpc_drop_reply when this error comes back. Cause svc_process to drop a request which returns a status of rpc_drop_reply. [akpm@osdl.org: fix warning storm] Cc: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
41 lines
898 B
C
41 lines
898 B
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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u32 (*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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};
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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 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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#endif /* LINUX_LOCKD_BIND_H */
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