On Fri, 20 Jun 2014 10:09:27 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote:
> tree: git://git.cmpxchg.org/linux-mmotm.git master
> head: df25ba7db0775d87018e2cd92f26b9b087093840
> commit: 8d72d7b20fab14a779df2f7ea7632d4ee223dfcc [130/230] mm: memcontrol: rewrite charge API
> config: make ARCH=m32r m32104ut_defconfig
>
> All error/warnings:
>
> mm/swap.c: In function 'lru_cache_add_active_or_unevictable':
> >> mm/swap.c:719:2: error: implicit declaration of function 'TestSetPageMlocked' [-Werror=implicit-function-declaration]
> cc1: some warnings being treated as errors
>
> vim +/TestSetPageMlocked +719 mm/swap.c
>
> 713 if (likely((vma->vm_flags & (VM_LOCKED | VM_SPECIAL)) != VM_LOCKED)) {
> 714 SetPageActive(page);
> 715 lru_cache_add(page);
> 716 return;
> 717 }
> 718
> > 719 if (!TestSetPageMlocked(page)) {
> 720 /*
> 721 * We use the irq-unsafe __mod_zone_page_stat because this
> 722 * counter is not modified from interrupt context, and the pte
>
hm, I can't think of anything very smart here.
--- a/mm/swap.c~mm-memcontrol-rewrite-charge-api-fix-2
+++ a/mm/swap.c
@@ -716,6 +716,7 @@ void lru_cache_add_active_or_unevictable
return;
}
+#ifdef CONFIG_MMU
if (!TestSetPageMlocked(page)) {
/*
* We use the irq-unsafe __mod_zone_page_stat because this
@@ -726,6 +727,7 @@ void lru_cache_add_active_or_unevictable
hpage_nr_pages(page));
count_vm_event(UNEVICTABLE_PGMLOCKED);
}
+#else
add_page_to_unevictable_list(page);
}
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