Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-block.git] / fs / nfsd / pnfs.h
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1#ifndef _FS_NFSD_PNFS_H
2#define _FS_NFSD_PNFS_H 1
3
a51f25a5 4#ifdef CONFIG_NFSD_V4
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5#include <linux/exportfs.h>
6#include <linux/nfsd/export.h>
7
8#include "state.h"
9#include "xdr4.h"
10
11struct xdr_stream;
12
13struct nfsd4_deviceid_map {
14 struct list_head hash;
15 u64 idx;
16 int fsid_type;
17 u32 fsid[];
18};
19
20struct nfsd4_layout_ops {
21 u32 notify_types;
22
23 __be32 (*proc_getdeviceinfo)(struct super_block *sb,
d7c920d1 24 struct svc_rqst *rqstp,
f99d4fbd 25 struct nfs4_client *clp,
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26 struct nfsd4_getdeviceinfo *gdevp);
27 __be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
28 struct nfsd4_getdeviceinfo *gdevp);
29
30 __be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
31 struct nfsd4_layoutget *lgp);
32 __be32 (*encode_layoutget)(struct xdr_stream *,
33 struct nfsd4_layoutget *lgp);
34
35 __be32 (*proc_layoutcommit)(struct inode *inode,
36 struct nfsd4_layoutcommit *lcp);
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37
38 void (*fence_client)(struct nfs4_layout_stateid *ls);
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39};
40
41extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
81c39329 42#ifdef CONFIG_NFSD_BLOCKLAYOUT
8650b8a0 43extern const struct nfsd4_layout_ops bl_layout_ops;
81c39329 44#endif
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45#ifdef CONFIG_NFSD_SCSILAYOUT
46extern const struct nfsd4_layout_ops scsi_layout_ops;
47#endif
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48#ifdef CONFIG_NFSD_FLEXFILELAYOUT
49extern const struct nfsd4_layout_ops ff_layout_ops;
50#endif
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51
52__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
53 struct nfsd4_compound_state *cstate, stateid_t *stateid,
54 bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
55__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
56 struct nfs4_layout_stateid *ls);
57__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
58 struct nfsd4_compound_state *cstate,
59 struct nfsd4_layoutreturn *lrp);
60__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
61 struct nfsd4_compound_state *cstate,
62 struct nfsd4_layoutreturn *lrp);
63int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
64 u32 device_generation);
65struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
a51f25a5 66#endif /* CONFIG_NFSD_V4 */
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67
68#ifdef CONFIG_NFSD_PNFS
69void nfsd4_setup_layout_type(struct svc_export *exp);
70void nfsd4_return_all_client_layouts(struct nfs4_client *);
71void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
72 struct nfs4_file *fp);
73int nfsd4_init_pnfs(void);
74void nfsd4_exit_pnfs(void);
75#else
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76struct nfs4_client;
77struct nfs4_file;
78
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79static inline void nfsd4_setup_layout_type(struct svc_export *exp)
80{
81}
82
83static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
84{
85}
86static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
87 struct nfs4_file *fp)
88{
89}
90static inline void nfsd4_exit_pnfs(void)
91{
92}
93static inline int nfsd4_init_pnfs(void)
94{
95 return 0;
96}
97#endif /* CONFIG_NFSD_PNFS */
98#endif /* _FS_NFSD_PNFS_H */