yucco's blog

NAME
container_of - cast a member of a structure out to the containing structure 

SYNOPSIS
container_of  (ptr, type, member);
 
ARGUMENTS
ptr : the pointer to the member.
type : the type of the container struct this is embedded in.
member : the name of the member within the struct.

Example
struct my_object
{
         int my_name[128];
         int my_count;
         struct kobject kobj;
}

struct my_object* get_my_object_address( void *ptr )
{
         struct my_object *ptr_my;
         ptr_my = container_of( ptr, struct my_object, kobj );
         return ptr_my;
}