[PATCH AUTOSEL 4.19 03/57] mm: calculate deferred pages after skipping mirrored memory

From: Pavel Tatashin [ Upstream commit d3035be4ce2345d98633a45f93a74e526e94b802 ] update_defer_init() should be called only when struct page is about to be initialized. Because it counts number of initialized struct pages, but there we may skip struct pages if there is some mirrored memory. So

[PATCH AUTOSEL 4.19 03/57] mm: calculate deferred pages after skipping mirrored memory

From: Pavel Tatashin [ Upstream commit d3035be4ce2345d98633a45f93a74e526e94b802 ] update_defer_init() should be called only when struct page is about to be initialized. Because it counts number of initialized struct pages, but there we may skip struct pages if there is some mirrored memory. So