nfs_end_data_update_defer(inode);
nfs_end_data_update(inode);
static void nfs_inode_remove_request(struct nfs_page *req){	struct inode *inode = req->wb_context->dentry->d_inode;	struct nfs_inode *nfsi = NFS_I(inode);	BUG_ON (!NFS_WBACK_BUSY(req));	spin_lock(&nfsi->req_lock);	radix_tree_delete(&nfsi->nfs_page_tree, req->wb_index);	nfsi->npages--;	if (!nfsi->npages) {		spin_unlock(&nfsi->req_lock);		nfs_end_data_update_defer(inode);		iput(inode);	} else		spin_unlock(&nfsi->req_lock);	nfs_clear_request(req);	nfs_release_request(req);}