On Tue, 10 Apr 2018, Matthew Wilcox wrote:
> In my continued attempt to clean up struct page, I've got to the point
> where it'd be really nice to get rid of 'counters'. I like the patch
> below because it makes it clear when & where we're doing "weird" things
> to access the various counters.
Well sounds good.
> struct {
> unsigned long flags;
> union {
> struct {
> struct address_space *mapping;
> pgoff_t index;
> };
> struct {
> void *s_mem;
> void *freelist;
> };
> ...
> };
> union {
> atomic_t _mapcount;
> unsigned int active;
Is this aligned on a doubleword boundary? Maybe move the refcount below
the flags field?
