On 09/26/2018 08:24 AM, Alexander Duyck wrote: > With no options it works just like slub_debug and enables all > available options. So in our case it is a NOP since we wanted the > debugging enabled by default. Yeah, but slub_debug is different. First, nobody uses the slub_debug=- option because *that* is only used when you have SLUB_DEBUG=y *and* CONFIG_SLUB_DEBUG_ON=y, which not even Fedora does. slub_debug is *primarily* for *adding* debug features. For this, we need to turn them off. It sounds like following slub_debug was a bad idea, especially following its semantics too closely when it doesn't make sense.
