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

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Message-ID: <20241220103957.79dd1adb@canb.auug.org.au>
Date: Fri, 20 Dec 2024 10:39:57 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: yangge <yangge1116@....com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree

Hi all,

After merging the mm tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

In file included from arch/arm/mm/flush.c:17:
include/linux/hugetlb.h:1063:5: warning: no previous prototype for 'replace_free_hugepage_folios' [-Wmissing-prototypes]
 1063 | int replace_free_hugepage_folios(unsigned long start_pfn, unsigned long end_pfn)
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

(and many more)

Caused by commit

  7e5670da4517 ("mm: replace free hugepage folios after migration")

from the mm-unstable branch of the mm tree.

I have applied the following fix for today.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 20 Dec 2024 10:22:59 +1100
Subject: [PATCH] fix up for "mm: replace free hugepage folios after migration"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 include/linux/hugetlb.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 7d36ac8df97f..a39fbc2b88f3 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -1060,7 +1060,8 @@ static inline int isolate_or_dissolve_huge_page(struct page *page,
 	return -ENOMEM;
 }
 
-int replace_free_hugepage_folios(unsigned long start_pfn, unsigned long end_pfn)
+static inline int replace_free_hugepage_folios(unsigned long start_pfn,
+					       unsigned long end_pfn)
 {
 	return 0;
 }
-- 
2.45.2

-- 
Cheers,
Stephen Rothwell

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