diff options
Diffstat (limited to 'kerncompat.h')
-rw-r--r-- | kerncompat.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kerncompat.h b/kerncompat.h index fa96715f..1a2bc18c 100644 --- a/kerncompat.h +++ b/kerncompat.h @@ -263,6 +263,14 @@ static inline int IS_ERR_OR_NULL(const void *ptr) return !ptr || IS_ERR(ptr); } +/** + * swap - swap values of @a and @b + * @a: first value + * @b: second value + */ +#define swap(a, b) \ + do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) + /* * This looks more complex than it should be. But we need to * get the type for the ~ right in round_down (it needs to be |