linux-kernel - [PATCH 4/4] shmem: include header file to declare swap

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Message-ID: <20210812120350.49801-5-linmiaohe@huawei.com>
Date:   Thu, 12 Aug 2021 20:03:50 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>, <hughd@...gle.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 4/4] shmem: include header file to declare swap_info

It's bad to extern swap_info[] in .c. Include corresponding header
file instead.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/shmem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index ccef5fad0049..b9cebf074367 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -38,6 +38,7 @@
 #include <linux/hugetlb.h>
 #include <linux/frontswap.h>
 #include <linux/fs_parser.h>
+#include <linux/swapfile.h>
 
 static struct vfsmount *shm_mnt;
 
@@ -1152,8 +1153,6 @@ static void shmem_evict_inode(struct inode *inode)
 	clear_inode(inode);
 }
 
-extern struct swap_info_struct *swap_info[];
-
 static int shmem_find_swap_entries(struct address_space *mapping,
 				   pgoff_t start, unsigned int nr_entries,
 				   struct page **entries, pgoff_t *indices,
-- 
2.23.0