Hi Wei, On Thu, Dec 12, 2019 at 1:03 PM Wei Yongjun <weiyongjun1@xxxxxxxxxx> wrote: > The callback function of call_rcu() just calls a kfree(), so we > can use kfree_rcu() instead of call_rcu() + callback function. > > Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx> Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx> I've queued this up as: https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/wireguard-linux.git/commit/?id=2ddefeb5872878fe2fffb83664c02bd104fb1a52 I'll submit this to net-next next week as part of a cleanup series I'm preparing. In case you're curious, this originally was call_rcu_bh, as there was no kfree_rcu_bh function. Since the _bh functions got unified a few releases ago, this was changed to just a simple call_rcu, but apparently missed the optimization you've done here using kfree_rcu. So thanks for the patch. Regards, Jason
