On 25 September 2015 at 13:33, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>