linux-kernel - [PATCH] fs/ntfs3: Slightly simplify ntfs_inode

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Date:   Fri, 10 Nov 2023 20:59:22 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        ntfs3@...ts.linux.dev
Subject: [PATCH] fs/ntfs3: Slightly simplify ntfs_inode_printk()

The size passed to snprintf() includes the space for the trailing space.
So there is no reason here not to use all the available space.

So remove the -1 when computing 'name_len'.
While at it, use the size of the array directly instead of the intermediate
'name_len' variable.

snprintf() also guaranties that the buffer if NULL terminated, so there is
no need to write an additional trailing NULL "To be sure".

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 fs/ntfs3/super.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 9153dffde950..dcc8984a10a4 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -122,13 +122,12 @@ void ntfs_inode_printk(struct inode *inode, const char *fmt, ...)
 
 	if (name) {
 		struct dentry *de = d_find_alias(inode);
-		const u32 name_len = ARRAY_SIZE(s_name_buf) - 1;
 
 		if (de) {
 			spin_lock(&de->d_lock);
-			snprintf(name, name_len, " \"%s\"", de->d_name.name);
+			snprintf(name, sizeof(s_name_buf), " \"%s\"",
+				 de->d_name.name);
 			spin_unlock(&de->d_lock);
-			name[name_len] = 0; /* To be sure. */
 		} else {
 			name[0] = 0;
 		}
-- 
2.34.1