Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / nfsd / pnfs.h

diff --git a/kernel/fs/nfsd/pnfs.h b/kernel/fs/nfsd/pnfs.h
new file mode 100644 (file)
index 0000000..d4c4453
--- /dev/null
+++ b/kernel/fs/nfsd/pnfs.h
@@ -0,0 +1,86 @@
+#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 */