On Mon, 2 Dec 2013, Joonsoo Kim wrote: > To prepare to implement byte sized index for managing the freelist > of a slab, we should restrict the number of objects in a slab to be less > or equal to 256, since byte only represent 256 different values. > Setting the size of object to value equal or more than newly introduced > SLAB_OBJ_MIN_SIZE ensures that the number of objects in a slab is less or > equal to 256 for a slab with 1 page. > > If page size is rather larger than 4096, above assumption would be wrong. > In this case, we would fall back on 2 bytes sized index. > > If minimum size of kmalloc is less than 16, we use it as minimum object > size and give up this optimization. > > Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com>
Acked-by: David Rientjes <rient...@google.com> -- 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/
