Extern or forward variable declaration include/linux/hugetlb.h, line 8 [usage...] include/linux/mmzone.h, line 363 [usage...] include/linux/security.h, line 34 [usage...] include/linux/writeback.h, line 98 [usage...] include/net/ax25.h, line 170 [usage...] Typedef include/linux/sysctl.h, line 778 [usage...] Structure include/linux/sysctl.h, line 860 [usage...] Class, struct, or union member arch/s390/appldata/appldata.h, line 45 [usage...] include/linux/sysctl.h, line 879 [usage...]