As of the patch "cgroup namespaces: add a 'nsroot=' mountinfo field",
cgroupfs mountinfo output shows 'nsroot='. If userspace like criu
copy/pastes mount options from there into a new mount command, we should
ignore it.
Signed-off-by: Serge Hallyn <serge.hallyn@xxxxxxxxxx>
---
kernel/cgroup.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index ef0c25d..69fb112 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1680,6 +1680,10 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
opts->none = true;
continue;
}
+ if (!strncmp(token, "nsroot=", 7)) {
+ /* ignore nsroot= copied from mountinfo */
+ continue;
+ }
if (!strcmp(token, "all")) {
/* Mutually exclusive option 'all' + subsystem name */
if (one_ss)
--
2.7.0
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