[PATCH v2 04/11] mm: Make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

This function is only currently used by the memory-failure code, so
we can omit it if we're not compiling in the memory-failure code.

Suggested-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/page_vma_mapped.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
index 48bfc17934cd..6e06267fc220 100644
--- a/mm/page_vma_mapped.c
+++ b/mm/page_vma_mapped.c
@@ -314,6 +314,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
 	return false;
 }
 
+#ifdef CONFIG_MEMORY_FAILURE
 /**
  * page_mapped_in_vma - check whether a page is really mapped in a VMA
  * @page: the page to test
@@ -344,3 +345,4 @@ int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma)
 out:
 	return pvmw.address;
 }
+#endif
-- 
2.43.0