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

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: default avatarAl Viro <viro@zeniv.linux.org.uk>
482e0cd3