kernel: cgroup: push rcu read locking from css_is_ancestor() to callsite

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / fcntl.c

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 75e7c1f..d078b75 100644 (file)
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -532,9 +532,9 @@ static inline int sigio_perm(struct task_struct *p,
 
        rcu_read_lock();
        cred = __task_cred(p);
-       ret = ((fown->euid == 0 ||
-               fown->euid == cred->suid || fown->euid == cred->uid ||
-               fown->uid  == cred->suid || fown->uid  == cred->uid) &&
+       ret = ((uid_eq(fown->euid, GLOBAL_ROOT_UID) ||
+               uid_eq(fown->euid, cred->suid) || uid_eq(fown->euid, cred->uid) ||
+               uid_eq(fown->uid,  cred->suid) || uid_eq(fown->uid,  cred->uid)) &&
               !security_file_send_sigiotask(p, fown, sig));
        rcu_read_unlock();
        return ret;