On 07/06/2012 12:16 PM, Christoph Lameter wrote: > On Mon, 18 Jun 2012, Glauber Costa wrote: > >> In the slub allocator, when the last object of a page goes away, we >> don't necessarily free it - there is not necessarily a test for empty >> page in any slab_free path. > > This is the same btw in SLAB which keeps objects in per cpu caches and > keeps empty slab pages on special queues. > >> This patch marks all memcg caches as dead. kmem_cache_shrink is called >> for the ones who are not yet dead - this will force internal cache >> reorganization, and then all references to empty pages will be removed. > > You need to call this also for slab to drain the caches and free the pages > on the empty list. > Doesn't the SLAB have a time-based reaper for that?
That's why I was less concerned with the SLAB, but I can certainly call it for both. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
