objdump for cheats :)

(with -g compiled kernel objects)

$ objdump --source -d fix_node.o
fix_node.o:     file format elf32-i386

Disassembly of section .text:

00000000 <create_virtual_node>:
  return new_num + 1;
}

static void create_virtual_node (struct tree_balance * tb, int h)
{
       0:       55                      push   %ebp
       1:       57                      push   %edi
       2:       56                      push   %esi
       3:       53                      push   %ebx
       4:       83 ec 10                sub    $0x10,%esp
    struct item_head * ih;
    struct virtual_node * vn = tb->tb_vn;
       7:       8b 44 24 24             mov    0x24(%esp,1),%eax
       b:       8b 5c 24 28             mov    0x28(%esp,1),%ebx

...

        // FIXME: there is no check, that item operation did not
        // consume too much memory
        vn->vn_free_ptr += op_create_vi (vn, vi, is_affected, tb->insert_size [0]);
     27d:       8b 5c 24 24             mov    0x24(%esp,1),%ebx
     281:       89 c8                   mov    %ecx,%eax
     283:       8b 04 85 00 00 00 00    mov    0x0(,%eax,4),%eax
     28a:       8b 8b 24 01 00 00       mov    0x124(%ebx),%ecx
     290:       51                      push   %ecx
     291:       8b 54 24 08             mov    0x8(%esp,1),%edx
     295:       52                      push   %edx
     296:       57                      push   %edi
     297:       56                      push   %esi
     298:       8b 40 14                mov    0x14(%eax),%eax
     29b:       ff d0                   call   *%eax
     29d:       89 c2                   mov    %eax,%edx
     29f:       8b 06                   mov    (%esi),%eax