Re: [PATCH 01/13] seqnum_ops: Introduce Sequence Number Ops

[Peter Zijlstra]

On Thu, Nov 12, 2020 at 02:27:49PM -0700, Shuah Khan wrote:

> atomic64_t depends on CONFIG_64BIT
> 
> include/linux/types.h
> 
> #ifdef CONFIG_64BIT
> typedef struct {
>         s64 counter;
> } atomic64_t;
> #endif

That's because some 32bit archs need to override the type definition.
atomic64_t is available on 32bit, although sometimes it is atrocious
crap.