Why does each member function get its own .text.* section?

I understand that name mangling happens. What I don't understand is this:

class MyClass{public:  int doStuff(int a){    return a+1;  }};int main(){  MyClass myclass;  myclass.doStuff(2);  return 0;}

> g++ -c  -O0 blah.cpp && objdump -h blah.o blah.o:     file format elf64-x86-64Sections:Idx Name          Size      VMA               LMA               File off  Algn  0 .group        00000008  0000000000000000  0000000000000000  00000040  2**2                  CONTENTS, READONLY, EXCLUDE, GROUP, LINK_ONCE_DISCARD  1 .text         00000043  0000000000000000  0000000000000000  00000048  2**0                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE  2 .data         00000000  0000000000000000  0000000000000000  0000008b  2**0                  CONTENTS, ALLOC, LOAD, DATA  3 .bss          00000000  0000000000000000  0000000000000000  0000008b  2**0                  ALLOC  4 .text._ZN7MyClass7doStuffEi 00000013  0000000000000000  0000000000000000  0000008c  2**1                  CONTENTS, ALLOC, LOAD, READONLY, CODE  5 .comment      00000036  0000000000000000  0000000000000000  0000009f  2**0                  CONTENTS, READONLY  6 .note.GNU-stack 00000000  0000000000000000  0000000000000000  000000d5  2**0                  CONTENTS, READONLY  7 .eh_frame     00000058  0000000000000000  0000000000000000  000000d8  2**3                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA

Why is MyClass.doStuff in its own section, the section name being the mangled symbol for that member function?

I think this is not necessary for the linking to work, since it is the symbols that match when linking, not sections. ie. if everything was in .text it should work.

Is there a way to make this not happen?