linux-kernel - linux-next: build failure after merge of the akpm-current tree

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Message-ID: <20200106164944.063ac07b@canb.auug.org.au>
Date:   Mon, 6 Jan 2020 16:49:44 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: linux-next: build failure after merge of the akpm-current tree

Hi all,

After merging the akpm-current tree, today's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: "_debug_pagealloc_enabled_early" [sound/drivers/pcsp/snd-pcsp.ko] undefined!

Caused by commit

  6538817e7869 ("mm, debug_pagealloc: don't rely on static keys too early")

I have added this patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Mon, 6 Jan 2020 16:44:57 +1100
Subject: [PATCH] mm, debug_pagealloc: need to export _debug_pagealloc_enabled_early

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 mm/page_alloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 85811f1465e5..a41bd7341de1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -696,6 +696,7 @@ unsigned int _debug_guardpage_minorder;
 
 bool _debug_pagealloc_enabled_early __read_mostly
 			= IS_ENABLED(CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT);
+EXPORT_SYMBOL(_debug_pagealloc_enabled_early);
 DEFINE_STATIC_KEY_FALSE(_debug_pagealloc_enabled);
 EXPORT_SYMBOL(_debug_pagealloc_enabled);
 
-- 
2.24.0

-- 
Cheers,
Stephen Rothwell

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