linux-kernel - Re: [RFC PATCH] livepatch: allow removal of a disabled patch

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Message-ID: <20160503213709.g66xr624pwn7oguu@treble>
Date:	Tue, 3 May 2016 16:37:09 -0500
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Miroslav Benes <mbenes@...e.cz>
Cc:	jeyu@...hat.com, jikos@...nel.org, pmladek@...e.com,
	jslaby@...e.cz, live-patching@...r.kernel.org,
	linux-kernel@...r.kernel.org, huawei.libin@...wei.com,
	minfei.huang@...oo.com
Subject: Re: [RFC PATCH] livepatch: allow removal of a disabled patch

On Mon, May 02, 2016 at 01:57:22PM +0200, Miroslav Benes wrote:
> 1. Do we really need a completion? If I am not missing something
> kobject_del() always waits for sysfs callers to leave thanks to kernfs
> active protection.

What do you mean by "kernfs active protection"?  I see that
kernfs_remove() gets the kernfs_mutex lock, but I can't find anywhere
that a write to a sysfs file uses that lock.

I'm probably missing something...

-- 
Josh