On Tue, Mar 28, 2017 at 11:35 PM, Matthew Wilcox <wi...@infradead.org> wrote: > On Tue, Mar 28, 2017 at 06:15:41PM +0200, Dmitry Vyukov wrote: >> The new header allows to wrap per-arch atomic operations >> and add common functionality to all of them. > > Why a new header instead of putting this in linux/atomic.h?
Only a subset of archs include this header. If we pre-include it for all arches without changing their atomic.h, we will break build. We of course play some tricks with preprocessor. It's also large enough to put into a separate header IMO. Also a reasonable question: why put it into linux/atomic.h instead of a new header? :)
