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#ifndef _EXT2FS_COMPILER_H
#define _EXT2FS_COMPILER_H
#include <stddef.h>
#ifdef __GNUC__
#ifndef __GNUC_PREREQ
#if defined(__GNUC__) && defined(__GNUC_MINOR__)
#define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
#define __GNUC_PREREQ(maj, min) 0
#endif
#endif
#define container_of(ptr, type, member) ({ \
__typeof__( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#else
#define container_of(ptr, type, member) \
((type *)((char *)(ptr) - offsetof(type, member)))
#endif
#endif /* _EXT2FS_COMPILER_H */
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