__must_check       15 include/linux/compiler-gcc3.h #define __must_check		__attribute__((warn_unused_result))
__must_check        9 include/linux/compiler-gcc4.h #define __must_check 		__attribute__((warn_unused_result))
__must_check       97 include/linux/compiler.h #define __must_check
__must_check      101 include/linux/compiler.h #undef __must_check
__must_check      102 include/linux/compiler.h #define __must_check