const syscall.O_NONBLOCK

5 uses

	syscall (current package)
		exec_unix.go#L112: 		flag |= O_NONBLOCK
		exec_unix.go#L114: 		flag &^= O_NONBLOCK
		zerrors_linux_amd64.go#L659: 	O_NONBLOCK                       = 0x800

	internal/poll
		splice_linux.go#L224: 	const flags = syscall.O_CLOEXEC | syscall.O_NONBLOCK

	internal/syscall/unix
		nonblocking.go#L20: 	return flag&syscall.O_NONBLOCK != 0, nil