On 04/18/2018 08:49 PM, Matthew Wilcox wrote: > From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> > > This gives us five words of space in a single union in struct page. > The compound_mapcount moves position (from offset 24 to offset 20) > on 64-bit systems, but that does not seem likely to cause any trouble. > > Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
