linux-kernel - Re: [PATCH] percpu_counter: Rename __percpu_counter_add to percpu_counter_add

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Date:   Tue, 20 Jun 2017 15:55:26 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     tj@...nel.org
Cc:     nborisov@...e.com, jbacik@...com, linux-kernel@...r.kernel.org,
        mgorman@...hsingularity.net, clm@...com, dsterba@...e.com,
        darrick.wong@...cle.com, jack@...e.com, axboe@...com,
        linux-mm@...ck.org
Subject: Re: [PATCH] percpu_counter: Rename __percpu_counter_add to
 percpu_counter_add_batch

From: Tejun Heo <tj@...nel.org>
Date: Tue, 20 Jun 2017 15:47:59 -0400

> From 104b4e5139fe384431ac11c3b8a6cf4a529edf4a Mon Sep 17 00:00:00 2001
> From: Nikolay Borisov <nborisov@...e.com>
> Date: Tue, 20 Jun 2017 21:01:20 +0300
> 
> Currently, percpu_counter_add is a wrapper around __percpu_counter_add
> which is preempt safe due to explicit calls to preempt_disable.  Given
> how __ prefix is used in percpu related interfaces, the naming
> unfortunately creates the false sense that __percpu_counter_add is
> less safe than percpu_counter_add.  In terms of context-safety,
> they're equivalent.  The only difference is that the __ version takes
> a batch parameter.
> 
> Make this a bit more explicit by just renaming __percpu_counter_add to
> percpu_counter_add_batch.
> 
> This patch doesn't cause any functional changes.
> 
> tj: Minor updates to patch description for clarity.  Cosmetic
>     indentation updates.
> 
> Signed-off-by: Nikolay Borisov <nborisov@...e.com>
> Signed-off-by: Tejun Heo <tj@...nel.org>

Acked-by: David S. Miller <davem@...emloft.net>