1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 436e26f4d62..7c8cc514187 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1410,6 +1410,10 @@ static ssize_t cgroup_file_write(struct file *file, const char __user *buf,
                 return cft->write(cgrp, cft, file, buf, nbytes, ppos);
         if (cft->write_u64 || cft->write_s64)
                 return cgroup_write_X64(cgrp, cft, file, buf, nbytes, ppos);
+        if (cft->trigger) {
+                int ret = cft->trigger(cgrp, (unsigned int)cft->private);
+                return ret ? ret : nbytes;
+        }
         return -EINVAL;
 }