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Subject[PATCH 2/2] mm: fix undefined reference to `.kernel_map_pages' on PPC builds
It's possible to configure DEBUG_PAGEALLOC without PAGE_POISONING on
ppc. Fix building the generic kernel_map_pages() implementation in
this case:

LD init/built-in.o
mm/built-in.o: In function `free_pages_prepare':
mm/page_alloc.c:770: undefined reference to `.kernel_map_pages'
mm/built-in.o: In function `prep_new_page':
mm/page_alloc.c:933: undefined reference to `.kernel_map_pages'
mm/built-in.o: In function `map_pages':
mm/compaction.c:61: undefined reference to `.kernel_map_pages'
make: *** [vmlinux] Error 1

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
---
mm/Makefile | 1 +
1 file changed, 1 insertion(+)

diff --git a/mm/Makefile b/mm/Makefile
index 4bf586e..2956467 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_SLOB) += slob.o
obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
obj-$(CONFIG_KSM) += ksm.o
obj-$(CONFIG_PAGE_POISONING) += debug-pagealloc.o
+obj-$(CONFIG_DEBUG_PAGEALLOC) += debug-pagealloc.o
obj-$(CONFIG_SLAB) += slab.o
obj-$(CONFIG_SLUB) += slub.o
obj-$(CONFIG_KMEMCHECK) += kmemcheck.o
--
2.2.2


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