On Fri, Mar 22, 2019 at 07:39:31PM +0000, Christopher Lameter wrote: > On Fri, 22 Mar 2019, Waiman Long wrote: > > > > > > >> I am looking forward to it. > > > There is also alrady rcu being used in these paths. kfree_rcu() would not > > > be enough? It is an estalished mechanism that is mature and well > > > understood. > > > > > In this case, the memory objects are from kmem caches, so they can't > > freed using kfree_rcu(). > > Oh they can. kfree() can free memory from any slab cache.
Only for SLAB and SLUB. SLOB requires that you pass a pointer to the slab cache; it has no way to look up the slab cache from the object.
