NFS: Create custom NFS v4 write_inode() function

This gives pnfs a chance to do a layout commit inside the v4 code.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index a0be2d1..3696ca7 100644 (file)
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -202,6 +202,9 @@ struct nfs4_state_maintenance_ops {
 extern const struct dentry_operations nfs4_dentry_operations;
 extern const struct inode_operations nfs4_dir_inode_operations;
 
+/* write.c */
+int nfs4_write_inode(struct inode *, struct writeback_control *);
+
 /* nfs4namespace.c */
 rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
 struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 5a1c860..9d33fb2 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -391,7 +391,7 @@ struct file_system_type nfs4_referral_fs_type = {
 static const struct super_operations nfs4_sops = {
        .alloc_inode    = nfs_alloc_inode,
        .destroy_inode  = nfs_destroy_inode,
-       .write_inode    = nfs_write_inode,
+       .write_inode    = nfs4_write_inode,
        .put_super      = nfs_put_super,
        .statfs         = nfs_statfs,
        .evict_inode    = nfs4_evict_inode,

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index c11fb00..f312860 100644 (file)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1671,9 +1671,14 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr
 
 int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
-       int ret;
+       return nfs_commit_unstable_pages(inode, wbc);
+}
+
+#ifdef CONFIG_NFS_V4
+int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+       int ret = nfs_write_inode(inode, wbc);
 
-       ret = nfs_commit_unstable_pages(inode, wbc);
        if (ret >= 0 && test_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags)) {
                int status;
                bool sync = true;
@@ -1687,6 +1692,7 @@ int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
        }
        return ret;
 }
+#endif
 
 /*
  * flush the inode to disk.