Re: [PATCH net-next v2] block/drbd: use nla_put_u64_64bit()

[David Miller]

From: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Date: Wed, 4 May 2016 14:49:00 +0200

> Le 04/05/2016 11:05, Lars Ellenberg a écrit :
> [snip]
>> We don't have an "alignment problem" there, btw.
>> Last time I checked, we did work fine without this alignment magic,
>> we already take care of that, yes, even on affected architectures.
> The code adds several consecutive u64 attributes. The nl attribute header is 4
> bytes, thus the full attribute length is 12 bytes. If the first u64 is aligned
> on 8 (nla_data()), the next one is not aligned on 8: it starts 12 bytes (8 (u64)
> + 4 (nl attr hdr)) after the previous u64.

Right.