vfs: get_sb_single() - do not pass options twice

Filesystem code usually destroys the option buffer while
parsing it. This leads to errors when the same buffer is
passed twice. In case we fill a new superblock do not call
remount.

This is needed to quite a warning that the debugfs code
causes every boot.

Cc: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/super.c b/fs/super.c
index 19eb70b..aff046b 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -901,8 +901,9 @@ int get_sb_single(struct file_system_type *fs_type,
                        return error;
                }
                s->s_flags |= MS_ACTIVE;
+       } else {
+               do_remount_sb(s, flags, data, 0);
        }
-       do_remount_sb(s, flags, data, 0);
        simple_set_mnt(mnt, s);
        return 0;
 }