On Tue, 10 Apr 2018, Matthew Wilcox wrote: > > Is this aligned on a doubleword boundary? Maybe move the refcount below > > the flags field? > > You need freelist and _mapcount to be in the same dword. There's no > space to put them both in dword 0, so that's used for flags and mapping > / s_mem. Then freelist, mapcount and refcount are in dword 1 (on 64-bit), > or freelist & mapcount are in dword 1 on 32-bit. After that, 32 and 64-bit > no longer line up on the same dword boundaries. Well its no longer clear from the definitions that this must be the case. Clarify that in the next version?
