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kernel/linux-rt-4.4.41/fs/nfsd/pnfs.h 2.33 KB
5113f6f70   김현기   kernel add
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  #ifndef _FS_NFSD_PNFS_H
  #define _FS_NFSD_PNFS_H 1
  
  #ifdef CONFIG_NFSD_V4
  #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);
  #endif /* CONFIG_NFSD_V4 */
  
  #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
  struct nfs4_client;
  struct nfs4_file;
  
  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 */