linux-kernel - Re: [PATCH] idr: fix a subtle bug in idr_get

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Message-ID: <20130205153614.GA1508@redhat.com>
Date:	Tue, 5 Feb 2013 10:36:14 -0500
From:	David Teigland <teigland@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	akpm@...ux-foundation.org, rusty@...tcorp.com.au,
	linux-kernel@...r.kernel.org,
	Christine Caulfield <ccaulfie@...hat.com>,
	cluster-devel@...hat.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] idr: fix a subtle bug in idr_get_next()

On Sat, Feb 02, 2013 at 03:11:35PM -0800, Tejun Heo wrote:
> On Sat, Feb 02, 2013 at 03:10:48PM -0800, Tejun Heo wrote:
> > Fix it by ensuring proceeding to the next slot doesn't carry over the
> > unaligned offset - ie. use round_up(id + 1, slot_distance) instead of
> > id += slot_distance.
> > 
> > Signed-off-by: Tejun Heo <tj@...nel.org>
> > Reported-by: David Teigland <teigland@...hat.com>
> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> 
> David, can you please test whether the patch makes the skipped
> deletion bug go away?

Yes, I've tested, and it works fine now.
Thanks,
Dave

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