From: Bart Van Assche <bvanassche@acm.org>
To: Alexander Gordeev <agordeev@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Kent Overstreet <kmo@daterainc.com>,
Shaohua Li <shli@kernel.org>, Christoph Hellwig <hch@lst.de>,
Mike Christie <michaelc@cs.wisc.edu>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] percpu_ida: Handle out-of-tags gracefully
Date: Wed, 12 Mar 2014 17:16:17 +0100 [thread overview]
Message-ID: <53208851.8080103@acm.org> (raw)
In-Reply-To: <20140312152140.GA14305@dhcp-26-207.brq.redhat.com>
On 03/12/14 16:21, Alexander Gordeev wrote:
> While 'remote->nr_free' could be dropped on another CPU it still does not
> explain how steal_tags() enters the loop, but fails to locate 'cpus_have_tags'
> count of bits.
>
> So although v2 of your patch fixes the crash it does not address the root
> cause IMHO.
Hmm ... you are probably right. I will analyze this further and see what
I can come up with.
Bart.
prev parent reply other threads:[~2014-03-12 16:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-10 14:12 [PATCH] percpu_ida: Handle out-of-tags gracefully Bart Van Assche
2014-03-11 13:51 ` Alexander Gordeev
2014-03-11 18:10 ` Bart Van Assche
2014-03-11 20:48 ` Alexander Gordeev
2014-03-12 7:22 ` Bart Van Assche
2014-03-12 8:41 ` Alexander Gordeev
2014-03-12 10:05 ` Bart Van Assche
2014-03-12 15:21 ` Alexander Gordeev
2014-03-12 16:16 ` Bart Van Assche [this message]
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