devcgroup_inode_permission: take "is it a device node" checks to inlined wrapper

inode_permission() calls devcgroup_inode_permission() and almost all such
calls are _not_ for device nodes; let's at least keep the common path
straight...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 7 deletions

diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index cd1f779fa51d..1be68269e1c2 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -474,17 +474,11 @@ struct cgroup_subsys devices_subsys = {
         .subsys_id = devices_subsys_id,
 };
 
-int devcgroup_inode_permission(struct inode *inode, int mask)
+int __devcgroup_inode_permission(struct inode *inode, int mask)
 {
         struct dev_cgroup *dev_cgroup;
         struct dev_whitelist_item *wh;
 
-        dev_t device = inode->i_rdev;
-        if (!device)
-                return 0;
-        if (!S_ISBLK(inode->i_mode) && !S_ISCHR(inode->i_mode))
-                return 0;
-
         rcu_read_lock();
 
         dev_cgroup = task_devcgroup(current);