tag	line	file	source code
MIN_WRITE_SPACE	218	net/core/datagram.c	if (sk->prot && sock_wspace(sk) >= MIN_WRITE_SPACE)
MIN_WRITE_SPACE	222	net/core/datagram.c	if (sk->prot==NULL && sk->sndbuf-sk->wmem_alloc >= MIN_WRITE_SPACE)