linux-kernel - [PATCH] mm: swap: fix build warning when CONFIG

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Message-Id: <20250226182511.592796-1-shikemeng@huaweicloud.com>
Date: Thu, 27 Feb 2025 02:25:11 +0800
From: Kemeng Shi <shikemeng@...weicloud.com>
To: akpm@...ux-foundation.org,
	kasong@...cent.com
Cc: linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mm: swap: fix build warning when CONFIG_SWAP is not set

Fix build warning that folio_alloc_swap is defined but not used when
CONFIG_SWAP is not set.

Fixes: b79768ab943cf ("mm, swap: simplify folio swap allocation")
Signed-off-by: Kemeng Shi <shikemeng@...weicloud.com>
---
 include/linux/swap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 3a68da686c4e..d1f5414ea537 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -587,7 +587,7 @@ static inline int swp_swapcount(swp_entry_t entry)
 	return 0;
 }
 
-static int folio_alloc_swap(struct folio *folio, gfp_t gfp_mask)
+static inline int folio_alloc_swap(struct folio *folio, gfp_t gfp_mask)
 {
 	return -EINVAL;
 }
-- 
2.30.0