From: Saeed Mahameed <sae...@mellanox.com> Date: Tue, 10 Apr 2018 10:08:12 -0700
> Instead of holding the device chain read_lock also while calling > dev_get_stats just hold it only to check dev_isalive, if the dev is alive, > hold that dev via dev_hold then release the read_lock. > > When done handling the device, dev_put it. > > Signed-off-by: Saeed Mahameed <sae...@mellanox.com> My feedback here is that same as for patch #1. Two atomics for a shorter RCU lock hold time is not that great of a tradeoff.