linux-kernel - Re: 回复: [PATCH v5] workqueue: Remove unnecessary kfree() call in rcu_free

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Message-ID: <20200528095703.GH30374@kadam>
Date:   Thu, 28 May 2020 12:57:03 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Zhang, Qiang" <Qiang.Zhang@...driver.com>
Cc:     Markus Elfring <markus.elfring@....de>, Tejun Heo <tj@...nel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: 回复: [PATCH v5] workqueue:
 Remove unnecessary kfree() call in rcu_free_wq()

Guys, the patch is wrong.  The kfree is harmless when this is called
from destroy_workqueue() and required when it's called from
pwq_unbound_release_workfn().  Lai Jiangshan already explained this
already.  Why are we still discussing this?

regards,
dan carpenter