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8bb4ea04-afcd-44c5-6d0c-08db3c0aa745 X-MS-Exchange-CrossTenant-AuthSource: SA1PR10MB5867.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Apr 2023 10:34:25.9851 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: KwiiVMxMhSErKqAL6VRhnNjFio3q+0v+ie/1LATxjH1rTf+UjsYkJbsY3PFWvtJVqJ3VChWZvZGzp//PHBtuOA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4706 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-13_06,2023-04-13_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxlogscore=999 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304130095 X-Proofpoint-ORIG-GUID: 5puRq6TwzSSosyPCYNtRV0zkv80emBu6 X-Proofpoint-GUID: 5puRq6TwzSSosyPCYNtRV0zkv80emBu6 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Thu, Apr 13, 2023 at 10:44:43 AM +0300, Amir Goldstein wrote: > On Wed, Apr 12, 2023 at 6:58=E2=80=AFPM Christian Theune wrote: >> >> Hi, >> >> ugh. Sorry, looks like I jumped the gun. Mea culpa. >> >> We experienced a hang like this: >> >> Apr 05 11:51:27 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_sec= s" disables this message. >> Apr 05 11:51:27 kernel: task:xfs-conv/vdc1 state:D stack: 0 pid: 6= 06 ppid: 2 flags:0x00004080 >> Apr 05 11:51:27 kernel: Workqueue: xfs-conv/vdc1 xfs_end_io [xfs] >> Apr 05 11:51:27 kernel: Call Trace: >> Apr 05 11:51:27 kernel: __schedule+0x274/0x870 >> Apr 05 11:51:27 kernel: schedule+0x46/0xb0 >> Apr 05 11:51:27 kernel: xlog_grant_head_wait+0xc5/0x1d0 [xfs] >> Apr 05 11:51:27 kernel: xlog_grant_head_check+0xde/0x100 [xfs] >> Apr 05 11:51:27 kernel: xfs_log_reserve+0xbe/0x1b0 [xfs] >> Apr 05 11:51:27 kernel: xfs_trans_reserve+0x143/0x180 [xfs] >> Apr 05 11:51:27 kernel: xfs_trans_alloc+0xee/0x1a0 [xfs] >> Apr 05 11:51:27 kernel: xfs_iomap_write_unwritten+0x120/0x2e0 [xfs] >> Apr 05 11:51:27 kernel: ? record_times+0x15/0x90 >> Apr 05 11:51:27 kernel: xfs_end_ioend+0xd8/0x140 [xfs] >> Apr 05 11:51:27 kernel: xfs_end_io+0xb8/0xf0 [xfs] >> Apr 05 11:51:27 kernel: process_one_work+0x1b6/0x350 >> Apr 05 11:51:27 kernel: rescuer_thread+0x1d1/0x3a0 >> Apr 05 11:51:27 kernel: ? worker_thread+0x3e0/0x3e0 >> Apr 05 11:51:27 kernel: kthread+0x11b/0x140 >> Apr 05 11:51:27 kernel: ? kthread_associate_blkcg+0xb0/0xb0 >> Apr 05 11:51:27 kernel: ret_from_fork+0x22/0x30 >> >> Which seems to be similar to this: >> https://bugs.launchpad.net/bugs/1996269 >> >> I followed their patchset here: >> https://review.opendev.org/c/starlingx/kernel/+/864257 >> >> And I was under the impression that I picked the right one to ask >> for backporting, but it seems that was incorrect. I went through the >> list again and I think the following patches are the ones missing >> from 5.10: >> >> 8182ec00803085354761bbadf0287cad7eac0e2f - >> https://review.opendev.org/c/starlingx/kernel/+/864257/5/kernel-std/cent= os/patches/0035-xfs-drop-submit-side-trans-alloc-for-append-ioends.patch >> edbf1eb9032b84631031d9b43570e262f3461c24 - >> https://review.opendev.org/c/starlingx/kernel/+/864257/5/kernel-std/cent= os/patches/0036-xfs-open-code-ioend-needs-workqueue-helper.patch >> 170e31793806ce5e5a9647b6340954536244518e - >> https://review.opendev.org/c/starlingx/kernel/+/864257/5/kernel-std/cent= os/patches/0037-xfs-drop-unused-ioend-private-merge-and-setfilesize-.patch >> 2fd609b6c90a88630a50fb317473b210759b3873 - >> https://review.opendev.org/c/starlingx/kernel/+/864257/5/kernel-std/cent= os/patches/0038-xfs-drop-unnecessary-setfilesize-helper.patch >> > > The only commit that fixes the bug is: > 7cd3099f4925 xfs: drop submit side trans alloc for append ioends > > The rest are just code cleanups. > > That fix was missed in my original backports from v5.13 because of a tool= error, > so thank you for pointing it out. > > I have added it to my test branch and will follow up with posting to > stable later on. > > Chandan, > > Please make sure you include this fix when you get to considering > fixes from v5.13 to 5.4.y. > Sure, I will do that. However ... > I will wait with posting this fix to 5.10.y until I get the v5.13 > backports wish list from you. > Since I am working on another XFS work item there will be some delay before= I share the list of patches to be backported from v5.13 to 5.4.y. --=20 chandan