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Message-ID: <54C85454.6070303@cn.fujitsu.com> Date: Wed, 28 Jan 2015 11:15:32 +0800 From: Lai Jiangshan <laijs@...fujitsu.com> To: Tejun Heo <tj@...nel.org> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>, Eric Sandeen <sandeen@...deen.net>, Dave Chinner <david@...morbit.com> Subject: Re: [PATCH 3.18 11/61] workqueue: fix subtle pool management issue which can stall whole worker_pool On 01/28/2015 10:24 AM, Tejun Heo wrote: > On Wed, Jan 28, 2015 at 09:51:54AM +0800, Lai Jiangshan wrote: >> On 01/28/2015 09:26 AM, Greg Kroah-Hartman wrote: >>> 3.18-stable review patch. If anyone has any objections, please let me know. >> >> >> I don't think it is a bug-fix. >> It is just a good cleanup. > > It is a bug fix, for a rare but potentially critical issue. Please > read the patch description. It contains ample information on what's > broken and also the link to the original bug report. > Sorry, you are right. Was the bug introduced at the first time when maybe_create_worker() was introduced? Although manage_workers()/maybe_create_worker() was changed a bit, the stable-tree team can simply make manage_workers() return true to fix this bug for the very old kernel versions. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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