IS_ERR_VALUE 22 include/linux/err.h #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) IS_ERR_VALUE 33 tools/include/linux/err.h #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) IS_ERR_VALUE 6 tools/virtio/linux/err.h #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)