On 05/04/2017 07:01 AM, Michal Hocko wrote: > Just to make my proposal more clear. I suggest the following workflow > > cache = kmem_cache_create(foo, object_size, ..., SLAB_SEAL); > > obj = kmem_cache_alloc(cache, gfp_mask); > init_obj(obj) > [more allocations] > kmem_cache_seal(cache); > > All slab pages belonging to the cache would get write protection. All > new allocations from this cache would go to new slab pages. Later > kmem_cache_seal will write protect only those new pages. Igor, what sizes of objects are you after here, mostly? I ask because slub, at least, doesn't work at all for objects >PAGE_SIZE. It just punts those to the page allocator. But, you _could_ still use vmalloc() for those. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
