atomic_inc(&inode->i_count);
static int nfs_wait_on_inode(struct inode *inode){	struct rpc_clnt	*clnt = NFS_CLIENT(inode);	struct nfs_inode *nfsi = NFS_I(inode);	sigset_t oldmask;	int error;	atomic_inc(&inode->i_count);	rpc_clnt_sigmask(clnt, &oldmask);	error = wait_on_bit_lock(&nfsi->flags, NFS_INO_REVALIDATING,					nfs_wait_schedule, TASK_INTERRUPTIBLE);	rpc_clnt_sigunmask(clnt, &oldmask);	iput(inode);	return error;}