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Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 8f468e0d2534..727f799757ab 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -72,6 +72,10 @@ extern int mmap_rnd_compat_bits __read_mostly;
#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0))
#endif
+#ifndef page_to_virt
+#define page_to_virt(x) __va(PFN_PHYS(page_to_pfn(x)))
+#endif
+
/*
* To prevent common memory management code establishing
* a zero page mapping on a read fault.
@@ -957,7 +961,7 @@ static inline struct mem_cgroup *page_memcg(struct page *page)
static __always_inline void *lowmem_page_address(const struct page *page)
{
- return __va(PFN_PHYS(page_to_pfn(page)));
+ return page_to_virt(page);
}
#if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL)