NFSv4.1: layoutcommit

The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to
the data server (as opposed to the MDS) and the data server WRITE
is not NFS_FILE_SYNC.

Only whole file layout support means that there is only one IOMODE_RW layout
segment.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com>
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn>
Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn>
Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn>
Tested-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

3 files changed, 25 insertions, 0 deletions

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 134716e5e350..bf22cfaaeee5 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -560,6 +560,7 @@ enum {
         NFSPROC4_CLNT_RECLAIM_COMPLETE,
         NFSPROC4_CLNT_LAYOUTGET,
         NFSPROC4_CLNT_GETDEVICEINFO,
+        NFSPROC4_CLNT_LAYOUTCOMMIT,
 };
 
 /* nfs41 types */
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 807e07c86b26..1b93b9c60e55 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -228,6 +228,7 @@ struct nfs_inode {
 #define NFS_INO_FSCACHE_LOCK    (6)             /* FS-Cache cookie management lock */
 #define NFS_INO_COMMIT          (7)             /* inode is committing unstable writes */
 #define NFS_INO_PNFS_COMMIT     (8)             /* use pnfs code for commit */
+#define NFS_INO_LAYOUTCOMMIT    (9)             /* layoutcommit required */
 
 static inline struct nfs_inode *NFS_I(const struct inode *inode)
 {
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index ac0c0e51786e..84f3585c5728 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -236,6 +236,29 @@ struct nfs4_getdeviceinfo_res {
         struct nfs4_sequence_res seq_res;
 };
 
+struct nfs4_layoutcommit_args {
+        nfs4_stateid stateid;
+        __u64 lastbytewritten;
+        struct inode *inode;
+        const u32 *bitmask;
+        struct nfs4_sequence_args seq_args;
+};
+
+struct nfs4_layoutcommit_res {
+        struct nfs_fattr *fattr;
+        const struct nfs_server *server;
+        struct nfs4_sequence_res seq_res;
+};
+
+struct nfs4_layoutcommit_data {
+        struct rpc_task task;
+        struct nfs_fattr fattr;
+        struct pnfs_layout_segment *lseg;
+        struct rpc_cred *cred;
+        struct nfs4_layoutcommit_args args;
+        struct nfs4_layoutcommit_res res;
+};
+
 /*
  * Arguments to the open call.
  */