From: Johannes Berg <johan...@sipsolutions.net> Date: Wed, 09 Mar 2016 12:24:20 +0100
> Yeah, there's probably no way a compiler could ever do something with > it that's not the same as packed, but it seems to me that just out of > convention structs that have some wire-format meaning should usually be > __packed. Not unless absolutely necessary. There is a serious performance penalty for using __packed on some architectures. __packed has several undesirable side-effects, one of which is that it causes the compiler to be unable to assume the alignment of anything.
