On Mon, Feb 26, 2018 at 5:09 PM, <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> All of the above are caused by include/asm-generic/qrwlock_types.h
> failing to include asm/byteorder.h after commit e0d02285f16e
> ("locking/qrwlock: Use 'struct qrwlock' instead of 'struct __qrwlock'")
> in linux-4.15.
>
> Similar bugs may or may not exist in older kernels as well, but there is
> no easy way to test those with link-time optimizations, and kernels
> before 4.14 are harder to fix because they don't have Babu's patch
> series
As I wrote in the changelog, it's probably not a good idea to have this
backported to 4.9 or earlier, please drop it.
Arnd