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C/C++ code:

#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})

 

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[/code] 
#define container_of(ptr, type, member) ({ \
  (type *)( (char *)ptr - offsetof(type, member));})
[/code] 



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