On Fri, Mar 23, 2018 at 08:14:21AM -0700, Matthew Wilcox wrote: > On Fri, Mar 23, 2018 at 04:33:24PM +0300, Kirill Tkhai wrote: > > > + page = virt_to_head_page(ptr); > > > + if (likely(PageSlab(page))) > > > + return kmem_cache_free(page->slab_cache, (void *)ptr); > > > > It seems slab_cache is not generic for all types of slabs. SLOB does not > > care about it: > > Oof. I was sure I checked that. You're quite right that it doesn't ... > this should fix that problem:
This patch was complete rubbish. The point of SLOB is that it mixes sizes within the same page, and doesn't store the size when allocating from a slab. So there is no way to tell. I'm going to think about this some more.
