slub: fix kmemcheck calls to match ksize() hints
Recent use of ksize() in network stack (commit ca44ac38 : net: don't reallocate skb->head unless the current one hasn't the needed extra size or is shared) triggers kmemcheck warnings, because ksize() can return more space than kmemcheck is aware of. Pekka Enberg noticed SLAB+kmemcheck is doing the right thing, while SLUB +kmemcheck doesnt. Bugzilla reference #27212 Reported-by: NChristian Casteyde <casteyde.christian@free.fr> Suggested-by: NPekka Enberg <penberg@kernel.org> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NDavid Rientjes <rientjes@google.com> Acked-by: NChristoph Lameter <cl@linux.com> CC: Changli Gao <xiaosuo@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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