linux-kernel - [PATCH/RFC 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG

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Date:	Tue, 26 Jan 2016 10:18:23 +0100
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org, linux-s390@...r.kernel.org,
	x86@...nel.org, Christian Borntraeger <borntraeger@...ibm.com>
Subject: [PATCH/RFC 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC

We can provide debug_pagealloc_enabled() also if CONFIG_DEBUG_PAGEALLOC
is not set. It will return false in that case.

Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
---
 include/linux/mm.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7783073..fbc5354 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2148,6 +2148,10 @@ kernel_map_pages(struct page *page, int numpages, int enable)
 extern bool kernel_page_present(struct page *page);
 #endif /* CONFIG_HIBERNATION */
 #else
+static inline bool debug_pagealloc_enabled(void)
+{
+	return false;
+}
 static inline void
 kernel_map_pages(struct page *page, int numpages, int enable) {}
 #ifdef CONFIG_HIBERNATION
-- 
2.3.0