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From: Yunfeng Ye <yeyunfeng@huawei.com>
To: <tytso@mit.edu>, <adilger.kernel@dilger.ca>,
	<linux-ext4@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Ritesh Harjani <riteshh@linux.ibm.com>
Cc: "hushiyuan@huawei.com" <hushiyuan@huawei.com>,
	"linfeilong@huawei.com" <linfeilong@huawei.com>
Subject: [PATCH v2] ext4: fix Wunused-but-set-variable warning in ext4_add_entry()
Date: Tue, 17 Dec 2019 22:46:49 +0800
Message-ID: <cb5eb904-224a-9701-c38f-cb23514b1fff@huawei.com> (raw)

Warning is found when compile with "-Wunused-but-set-variable":

fs/ext4/namei.c: In function ‘ext4_add_entry’:
fs/ext4/namei.c:2167:23: warning: variable ‘sbi’ set but not used
[-Wunused-but-set-variable]
  struct ext4_sb_info *sbi;
                       ^~~
Fix this by moving the variable @sbi under CONFIG_UNICODE.

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
---
v1 -> v2:
 - add "Reviewed-by"

 fs/ext4/namei.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index a856997d87b5..617349be460f 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2164,7 +2164,9 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 	struct buffer_head *bh = NULL;
 	struct ext4_dir_entry_2 *de;
 	struct super_block *sb;
+#ifdef CONFIG_UNICODE
 	struct ext4_sb_info *sbi;
+#endif
 	struct ext4_filename fname;
 	int	retval;
 	int	dx_fallback=0;
@@ -2176,12 +2178,12 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 		csum_size = sizeof(struct ext4_dir_entry_tail);

 	sb = dir->i_sb;
-	sbi = EXT4_SB(sb);
 	blocksize = sb->s_blocksize;
 	if (!dentry->d_name.len)
 		return -EINVAL;

 #ifdef CONFIG_UNICODE
+	sbi = EXT4_SB(sb);
 	if (ext4_has_strict_mode(sbi) && IS_CASEFOLDED(dir) &&
 	    sbi->s_encoding && utf8_validate(sbi->s_encoding, &dentry->d_name))
 		return -EINVAL;
-- 
2.7.4


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-17 14:46 Yunfeng Ye [this message]
2019-12-22  2:01 ` Theodore Y. Ts'o

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