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