cgroup: fix seq_show_option merge with legacy_name

When seq_show_option (commit a068acf2ee77: "fs: create and use
seq_show_option for escaping") was merged, it did not correctly collide
with cgroup's addition of legacy_name (commit 3e1d2eed39d8: "cgroup:
introduce cgroup_subsys->legacy_name") changes.

This fixes the reported name.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a8538e4..2cf0f79 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1342,7 +1342,7 @@ static int cgroup_show_options(struct seq_file *seq,
        if (root != &cgrp_dfl_root)
                for_each_subsys(ss, ssid)
                        if (root->subsys_mask & (1 << ssid))
-                               seq_show_option(seq, ss->name, NULL);
+                               seq_show_option(seq, ss->legacy_name, NULL);
        if (root->flags & CGRP_ROOT_NOPREFIX)
                seq_puts(seq, ",noprefix");
        if (root->flags & CGRP_ROOT_XATTR)