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Mon, 18 Jul 2022 18:07:14 +0000 Received: from SJ0PR10MB4752.namprd10.prod.outlook.com ([fe80::61e3:46f5:e886:d7a1]) by SJ0PR10MB4752.namprd10.prod.outlook.com ([fe80::61e3:46f5:e886:d7a1%3]) with mapi id 15.20.5438.023; Mon, 18 Jul 2022 18:07:14 +0000 Message-ID: <70bfaa1f-9a33-406f-3998-e185daea48b3@oracle.com> Date: Mon, 18 Jul 2022 11:07:11 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [merged mm-hotfixes-stable] revert-ocfs2-mount-shared-volume-without-ha-stack.patch removed from -mm tree Content-Language: en-US To: Andrew Morton , mm-commits@vger.kernel.org, stable@vger.kernel.org, piaojun@huawei.com, mark@fasheh.com, joseph.qi@linux.alibaba.com, jlbec@evilplan.org, heming.zhao@suse.com, ghe@suse.com, gechangwei@live.cn, ocfs2-devel@oss.oracle.com References: <20220717043751.51CD1C341C0@smtp.kernel.org> From: Junxiao Bi In-Reply-To: <20220717043751.51CD1C341C0@smtp.kernel.org> Content-Type: text/plain; charset=UTF-8; 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On 7/16/22 9:37 PM, Andrew Morton wrote: > From: Junxiao Bi via Ocfs2-devel > Subject: Revert "ocfs2: mount shared volume without ha stack" > Date: Fri, 3 Jun 2022 15:28:01 -0700 > > This reverts commit 912f655d78c5d4ad05eac287f23a435924df7144. > > This commit introduced a regression that can cause mount hung. The > changes in __ocfs2_find_empty_slot causes that any node with none-zero > node number can grab the slot that was already taken by node 0, so node 1 > will access the same journal with node 0, when it try to grab journal > cluster lock, it will hung because it was already acquired by node 0. > It's very easy to reproduce this, in one cluster, mount node 0 first, then > node 1, you will see the following call trace from node 1.