linux-kernel - [RESEND PATCH 3/3] vfs: show_vfsstat: remove redundant initialization and check of error code

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160111153717.GD30070@altlinux.org>
Date:	Mon, 11 Jan 2016 18:37:17 +0300
From:	"Dmitry V. Levin" <ldv@...linux.org>
To:	Alexander Viro <viro@...iv.linux.org.uk>
Cc:	Mateusz Guzik <mguzik@...hat.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [RESEND PATCH 3/3] vfs: show_vfsstat: remove redundant initialization and check of error code

Date: Wed Nov 18 21:09:45 2015 +0000

As err variable is now always checked right after each assignment, its
initialization is redundant and could be safely removed.  For the same
reason, the last check of err is also redundant and could be removed as
well.

Suggested-by: Mateusz Guzik <mguzik@...hat.com>
Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
---
 fs/proc_namespace.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
index 7a6b2f3..3f1190d 100644
--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -193,7 +193,7 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
 	struct mount *r = real_mount(mnt);
 	struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
 	struct super_block *sb = mnt_path.dentry->d_sb;
-	int err = 0;
+	int err;
 
 	/* device */
 	if (sb->s_op->show_devname) {
@@ -224,8 +224,7 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
 	/* optional statistics */
 	if (sb->s_op->show_stats) {
 		seq_putc(m, ' ');
-		if (!err)
-			err = sb->s_op->show_stats(m, mnt_path.dentry);
+		err = sb->s_op->show_stats(m, mnt_path.dentry);
 	}
 
 	seq_putc(m, '\n');

-- 
ldv