On 25 September 2015 at 13:33, Rafael J. Wysocki [off-list ref] wrote:

You're going to change that into bool in the next patch, right?

Yeah.

So what if bool is a byte and the field is not word-aligned

Its between two 'unsigned long' variables today, and the struct isn't packed.
So, it will be aligned, isn't it?

and changing
that byte requires a read-modify-write.  How do we ensure that things remain
consistent in that case?

I didn't understood why a read-modify-write is special here? That's
what will happen
to most of the non-word-sized fields anyway?

Probably I didn't understood what you meant..

--
viresh