On Mon, 2019-01-28 at 17:41 -0800, David Rientjes wrote: > On Thu, 24 Jan 2019, miles.chen@xxxxxxxxxxxx wrote: > > > From: Miles Chen <miles.chen@xxxxxxxxxxxx> > > > > When debugging slab errors in slub.c, sometimes we have to trigger > > a panic in order to get the coredump file. Add a debug option > > SLAB_WARN_ON_ERROR to toggle WARN_ON() when the option is set. > > > > Wouldn't it be better to enable/disable this for all slab caches instead > of individual caches at runtime? I'm not sure excluding some caches > because you know they'll WARN and trigger panic_on_warn unnecessarily is > valid since it could be enabled for that cache as well through this > interface. We can enable this option only for specific slab(s). e.g., slub_debug=W,dentry or enable this option for all slabs e.g., slub_debug=W
