Re: [PATCH 6/6] cls_cgroup: remove redundant rcu_read_lock/unlock
From: David Miller <hidden>
Date: 2012-02-01 07:11:17
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From: Eric Dumazet <redacted> Date: Wed, 01 Feb 2012 08:07:19 +0100
Then, I wonder why we do the "if (classid && classid != sk->sk_classid)" before the : sk->sk_classid = classid; This seems unnecessary checks.
Avoiding dirtying the sk->sk_classid cache line unnecessarily? I actually have no idea actually how often this routine can get invoked in real world scenerios.