3 files changed, 52 insertions, 0 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 34da32436ac0..a9683d6acaa4 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -545,6 +545,8 @@ enum {
         NFSPROC4_CLNT_SEQUENCE,
         NFSPROC4_CLNT_GET_LEASE_TIME,
         NFSPROC4_CLNT_RECLAIM_COMPLETE,
+        NFSPROC4_CLNT_LAYOUTGET,
+        NFSPROC4_CLNT_GETDEVICEINFO,
 };
 
 /* nfs41 types */
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 4d62f1581ed1..452d96436d26 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -83,6 +83,7 @@ struct nfs_client {
         u32                     cl_exchange_flags;
         struct nfs4_session     *cl_session;    /* sharred session */
         struct list_head        cl_layouts;
+        struct pnfs_deviceid_cache *cl_devid_cache; /* pNFS deviceid cache */
 #endif /* CONFIG_NFS_V4_1 */
 
 #ifdef CONFIG_NFS_FSCACHE
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 065f9d105d05..ba6cc8f223c9 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -187,6 +187,55 @@ struct nfs4_get_lease_time_res {
         struct nfs4_sequence_res        lr_seq_res;
 };
 
+#define PNFS_LAYOUT_MAXSIZE 4096
+
+struct nfs4_layoutdriver_data {
+        __u32 len;
+        void *buf;
+};
+
+struct pnfs_layout_range {
+        u32 iomode;
+        u64 offset;
+        u64 length;
+};
+
+struct nfs4_layoutget_args {
+        __u32 type;
+        struct pnfs_layout_range range;
+        __u64 minlength;
+        __u32 maxcount;
+        struct inode *inode;
+        struct nfs_open_context *ctx;
+        struct nfs4_sequence_args seq_args;
+};
+
+struct nfs4_layoutget_res {
+        __u32 return_on_close;
+        struct pnfs_layout_range range;
+        __u32 type;
+        nfs4_stateid stateid;
+        struct nfs4_layoutdriver_data layout;
+        struct nfs4_sequence_res seq_res;
+};
+
+struct nfs4_layoutget {
+        struct nfs4_layoutget_args args;
+        struct nfs4_layoutget_res res;
+        struct pnfs_layout_segment **lsegpp;
+        int status;
+};
+
+struct nfs4_getdeviceinfo_args {
+        struct pnfs_device *pdev;
+        struct nfs4_sequence_args seq_args;
+};
+
+struct nfs4_getdeviceinfo_res {
+        struct pnfs_device *pdev;
+        struct nfs4_sequence_res seq_res;
+};
+
 /*
  * Arguments to the open call.
  */