[linux-2.6-block.git] / fs / nfsd / pnfs.h

#ifndef _FS_NFSD_PNFS_H
#define _FS_NFSD_PNFS_H 1

#include <linux/exportfs.h>
#include <linux/nfsd/export.h>

#include "state.h"
#include "xdr4.h"

struct xdr_stream;

struct nfsd4_deviceid_map {
	struct list_head	hash;
	u64			idx;
	int			fsid_type;
	u32			fsid[];
};

struct nfsd4_layout_ops {
	u32		notify_types;

	__be32 (*proc_getdeviceinfo)(struct super_block *sb,
			struct nfsd4_getdeviceinfo *gdevp);
	__be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
			struct nfsd4_getdeviceinfo *gdevp);

	__be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
			struct nfsd4_layoutget *lgp);
	__be32 (*encode_layoutget)(struct xdr_stream *,
			struct nfsd4_layoutget *lgp);

	__be32 (*proc_layoutcommit)(struct inode *inode,
			struct nfsd4_layoutcommit *lcp);
};

extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
extern const struct nfsd4_layout_ops bl_layout_ops;

__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *cstate, stateid_t *stateid,
		bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
		struct nfs4_layout_stateid *ls);
__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *cstate,
		struct nfsd4_layoutreturn *lrp);
__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
		struct nfsd4_compound_state *cstate,
		struct nfsd4_layoutreturn *lrp);
int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
		u32 device_generation);
struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);

#ifdef CONFIG_NFSD_PNFS
void nfsd4_setup_layout_type(struct svc_export *exp);
void nfsd4_return_all_client_layouts(struct nfs4_client *);
void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
		struct nfs4_file *fp);
int nfsd4_init_pnfs(void);
void nfsd4_exit_pnfs(void);
#else
static inline void nfsd4_setup_layout_type(struct svc_export *exp)
{
}

static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
{
}
static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
		struct nfs4_file *fp)
{
}
static inline void nfsd4_exit_pnfs(void)
{
}
static inline int nfsd4_init_pnfs(void)
{
	return 0;
}
#endif /* CONFIG_NFSD_PNFS */
#endif /* _FS_NFSD_PNFS_H */
Commit	Line	Data
9cf514cc CH	1	#ifndef _FS_NFSD_PNFS_H
	2	#define _FS_NFSD_PNFS_H 1
	3
	4	#include <linux/exportfs.h>
	5	#include <linux/nfsd/export.h>
	6
	7	#include "state.h"
	8	#include "xdr4.h"
	9
	10	struct xdr_stream;
	11
	12	struct nfsd4_deviceid_map {
	13	struct list_head hash;
	14	u64 idx;
	15	int fsid_type;
	16	u32 fsid[];
	17	};
	18
	19	struct nfsd4_layout_ops {
	20	u32 notify_types;
	21
	22	__be32 (proc_getdeviceinfo)(struct super_block sb,
	23	struct nfsd4_getdeviceinfo *gdevp);
	24	__be32 (encode_getdeviceinfo)(struct xdr_stream xdr,
	25	struct nfsd4_getdeviceinfo *gdevp);
	26
	27	__be32 (proc_layoutget)(struct inode , const struct svc_fh *fhp,
	28	struct nfsd4_layoutget *lgp);
	29	__be32 (encode_layoutget)(struct xdr_stream ,
	30	struct nfsd4_layoutget *lgp);
	31
	32	__be32 (proc_layoutcommit)(struct inode inode,
	33	struct nfsd4_layoutcommit *lcp);
	34	};
	35
	36	extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
8650b8a0	37	extern const struct nfsd4_layout_ops bl_layout_ops;
9cf514cc CH	38
	39	__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
	40	struct nfsd4_compound_state cstate, stateid_t stateid,
	41	bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
	42	__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
	43	struct nfs4_layout_stateid *ls);
	44	__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
	45	struct nfsd4_compound_state *cstate,
	46	struct nfsd4_layoutreturn *lrp);
	47	__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
	48	struct nfsd4_compound_state *cstate,
	49	struct nfsd4_layoutreturn *lrp);
	50	int nfsd4_set_deviceid(struct nfsd4_deviceid id, const struct svc_fh fhp,
	51	u32 device_generation);
	52	struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
	53
	54	#ifdef CONFIG_NFSD_PNFS
	55	void nfsd4_setup_layout_type(struct svc_export *exp);
	56	void nfsd4_return_all_client_layouts(struct nfs4_client *);
	57	void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
	58	struct nfs4_file *fp);
	59	int nfsd4_init_pnfs(void);
	60	void nfsd4_exit_pnfs(void);
	61	#else
	62	static inline void nfsd4_setup_layout_type(struct svc_export *exp)
	63	{
	64	}
	65
	66	static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
	67	{
	68	}
	69	static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
	70	struct nfs4_file *fp)
	71	{
	72	}
	73	static inline void nfsd4_exit_pnfs(void)
	74	{
	75	}
	76	static inline int nfsd4_init_pnfs(void)
	77	{
	78	return 0;
	79	}
	80	#endif /* CONFIG_NFSD_PNFS */
	81	#endif /* _FS_NFSD_PNFS_H */