Commit 5f8d498d authored by Dmitry V. Levin's avatar Dmitry V. Levin Committed by Al Viro

vfs: show_vfsstat: do not ignore errors from show_devname method

Explicitly check show_devname method return code and bail out in case
of an error.  This fixes regression introduced by commit 9d4d6574.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarDmitry V. Levin <ldv@altlinux.org>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent a5b3a80b
...@@ -199,6 +199,8 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt) ...@@ -199,6 +199,8 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
if (sb->s_op->show_devname) { if (sb->s_op->show_devname) {
seq_puts(m, "device "); seq_puts(m, "device ");
err = sb->s_op->show_devname(m, mnt_path.dentry); err = sb->s_op->show_devname(m, mnt_path.dentry);
if (err)
goto out;
} else { } else {
if (r->mnt_devname) { if (r->mnt_devname) {
seq_puts(m, "device "); seq_puts(m, "device ");
......
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