diff options
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index aeceb886898..abc433772e5 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1549,11 +1549,14 @@ static int cgroup_seqfile_show(struct seq_file *m, void *arg) { struct cgroup_seqfile_state *state = m->private; struct cftype *cft = state->cft; - struct cgroup_map_cb cb = { - .fill = cgroup_map_add, - .state = m, - }; - return cft->read_map(state->cgroup, cft, &cb); + if (cft->read_map) { + struct cgroup_map_cb cb = { + .fill = cgroup_map_add, + .state = m, + }; + return cft->read_map(state->cgroup, cft, &cb); + } + return cft->read_seq_string(state->cgroup, cft, m); } int cgroup_seqfile_release(struct inode *inode, struct file *file) @@ -1581,7 +1584,7 @@ static int cgroup_file_open(struct inode *inode, struct file *file) cft = __d_cft(file->f_dentry); if (!cft) return -ENODEV; - if (cft->read_map) { + if (cft->read_map || cft->read_seq_string) { struct cgroup_seqfile_state *state = kzalloc(sizeof(*state), GFP_USER); if (!state) |