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From: Steven Dake <sdake@mvista.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-kernel@vger.kernel.org, mochel@osdl.org
Subject: Re: [PATCH} fix defect with kobject memory leaks during del_gendisk
Date: Thu, 25 Sep 2003 11:04:11 -0700	[thread overview]
Message-ID: <1064513050.4763.21.camel@persist.az.mvista.com> (raw)
In-Reply-To: <20030925072343.A4636@infradead.org>

On Wed, 2003-09-24 at 23:23, Christoph Hellwig wrote:
> On Wed, Sep 24, 2003 at 04:02:06PM -0700, Steven Dake wrote:
> > Unfortunately it appears that del_gendisk uses kobject_del to delete the
> > kobject.  If the kobject has a ktype release function, it is not called
> > in the kobject_del call path, but only in kobject_unregister.
> 
> That's intentional.  gendisks (like everything using kobjects) are
> reference counted and ->release is unly called after the last reference
> goes away, for gendisks that would be the last put_disk call.
> 
> Unless you miss the put_disk call (which md certainly has) there's
> no memeory leak.
> 
Thanks Christoph...

Looks like I'm barking up the wrong tree.  Time to go fix up md :)

-steve
> 


  reply	other threads:[~2003-09-25 18:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-09-24 23:02 Steven Dake
2003-09-25  6:23 ` Christoph Hellwig
2003-09-25 18:04   ` Steven Dake [this message]
2003-09-25 17:26 ` Patrick Mochel
2003-09-25 18:43   ` Steven Dake

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