From: Jeff Mahoney <jeffm@suse.com>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Greg KH <gregkh@linux.com>,
Linux Kernel Maling List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] kobject: introduce kobj_completion
Date: Wed, 11 Sep 2013 14:35:00 -0400 [thread overview]
Message-ID: <5230B7D4.5020405@suse.com> (raw)
In-Reply-To: <20130911172813.GL13318@ZenIV.linux.org.uk>
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On 9/11/13 1:28 PM, Al Viro wrote:
> On Wed, Sep 11, 2013 at 01:00:30PM -0400, Jeff Mahoney wrote:
>> A common way to handle kobject lifetimes in embedded in objects with
>> different lifetime rules is to pair the kobject with a struct completion.
>>
>> This introduces a kobj_completion structure that can be used in place
>> of the pairing, along with several convenience functions for
>> initialization, release, and put-and-wait.
>
> That's very easy to misuse, leading to deadlocks...
Misuse how? If you're using it any time other than shutting down an
object, you're shooting yourself in the foot.
-Jeff
--
Jeff Mahoney
SUSE Labs
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prev parent reply other threads:[~2013-09-11 18:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-11 17:00 [PATCH] kobject: introduce kobj_completion Jeff Mahoney
2013-09-11 17:15 ` Greg KH
2013-09-11 18:37 ` Jeff Mahoney
2013-09-11 17:28 ` Al Viro
2013-09-11 18:35 ` Jeff Mahoney [this message]
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