Re: [PATCH 6.1 v2 0/5] Backport of XFS umount hang fixes
From: Greg KH
Date: Tue Oct 13 2026 - 04:56:55 EST
On Tue, Oct 13, 2026 at 01:43:44PM +0530, Siddh Raman Pant wrote:
> Backport of this series:
> https://lore.kernel.org/all/20250625224957.1436116-1-david@xxxxxxxxxxxxx/
>
> I have added information in commit message upon conflict resolutions.
>
> v2: Address Sasha's comments to v1 in the below mail:
> https://lore.kernel.org/stable/2026-10-01-1-daily-reply-0012-re-xfs-umount-hang-backports@xxxxxxxxxx/
I appreciate the backports, but wow, this is going to be a mess to sift
through because you mixed all the different branches together. Here's
how it looks in my email client:
3 N Oct 13 Siddh Raman Pan (1.6K) ┬─>[PATCH 6.1 v2 0/5] Backport of XFS umount hang fixes
4 N Oct 13 Siddh Raman Pan (2.2K) │ ├─>[PATCH 5.10 v2 07/19] xfs: don't nest icloglock inside ic_callback_lock
5 N Oct 13 Siddh Raman Pan (4.0K) │ ├─>[PATCH 5.10 v2 13/19] xfs: fix intermittent hang during quotacheck
6 N Oct 13 Siddh Raman Pan ( 25K) │ ├─>[PATCH 5.10 v2 11/19] xfs: remove xfs_buf_t typedef
7 N Oct 13 Siddh Raman Pan (5.6K) │ ├─>[PATCH 5.10 v2 12/19] xfs: fix super block buf log item UAF during force shutdown
8 N Oct 13 Siddh Raman Pan (2.2K) │ ├─>[PATCH 5.10 v2 04/19] xfs: improve the code that checks recovered rmap intent items
9 N Oct 13 Siddh Raman Pan (9.3K) │ ├─>[PATCH 5.10 v2 16/19] xfs: catch stale AGF/AGF metadata
10 N Oct 13 Siddh Raman Pan (3.2K) │ ├─>[PATCH 5.10 v2 18/19] xfs: factor out stale buffer item completion
11 N Oct 13 Siddh Raman Pan (7.9K) │ ├─>[PATCH 5.10 v2 09/19] xfs: log items should have a xlog pointer, not a mount
12 N Oct 13 Siddh Raman Pan ( 12K) │ ├─>[PATCH 5.15 v2 9/9] xfs: fix unmount hang with unflushable inodes stuck in the AIL
13 N Oct 13 Siddh Raman Pan (5.7K) │ ├─>[PATCH 5.15 v2 7/9] xfs: rearrange code in xfs_buf_item.c
14 N Oct 13 Siddh Raman Pan (2.0K) │ ├─>[PATCH 5.10 v2 06/19] xfs: improve the code that checks recovered refcount intent items
15 N Oct 13 Siddh Raman Pan (3.3K) │ ├─>[PATCH 5.10 v2 05/19] xfs: hoist recovered refcount intent checks out of xfs_cui_item_recover
16 N Oct 13 Siddh Raman Pan (3.9K) │ ├─>[PATCH 5.10 v2 01/19] xfs: hoist recovered bmap intent checks out of xfs_bui_item_recover
17 N Oct 13 Siddh Raman Pan (9.1K) │ ├─>[PATCH 5.10 v2 10/19] xfs: aborting inodes on shutdown may need buffer lock
18 N Oct 13 Siddh Raman Pan (5.6K) │ ├─>[PATCH 6.1 v2 3/5] xfs: rearrange code in xfs_buf_item.c
19 N Oct 13 Siddh Raman Pan ( 12K) │ ├─>[PATCH 5.10 v2 19/19] xfs: fix unmount hang with unflushable inodes stuck in the AIL
20 N Oct 13 Siddh Raman Pan (3.2K) │ ├─>[PATCH 6.1 v2 4/5] xfs: factor out stale buffer item completion
21 N Oct 13 Siddh Raman Pan (5.7K) │ ├─>[PATCH 5.10 v2 17/19] xfs: rearrange code in xfs_buf_item.c
22 N Oct 13 Siddh Raman Pan (5.6K) │ ├─>[PATCH 6.1 v2 1/5] xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
23 N Oct 13 Siddh Raman Pan (5.8K) │ ├─>[PATCH 5.10 v2 15/19] xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
24 N Oct 13 Siddh Raman Pan (7.3K) │ ├─>[PATCH 5.10 v2 14/19] xfs: buffer pins need to hold a buffer reference
25 N Oct 13 Siddh Raman Pan (6.5K) │ ├─>[PATCH 5.15 v2 1/9] xfs: log items should have a xlog pointer, not a mount
26 N Oct 13 Siddh Raman Pan (5.6K) │ ├─>[PATCH 5.15 v2 3/9] xfs: fix super block buf log item UAF during force shutdown
27 N Oct 13 Siddh Raman Pan ( 12K) │ ├─>[PATCH 6.1 v2 5/5] xfs: fix unmount hang with unflushable inodes stuck in the AIL
28 N Oct 13 Siddh Raman Pan (8.1K) │ ├─>[PATCH 5.10 v2 08/19] xfs: convert XLOG_FORCED_SHUTDOWN() to xlog_is_shutdown()
29 N Oct 13 Siddh Raman Pan (3.5K) │ ├─>[PATCH 5.10 v2 03/19] xfs: hoist recovered rmap intent checks out of xfs_rui_item_recover
30 N Oct 13 Siddh Raman Pan (2.3K) │ ├─>[PATCH 5.10 v2 02/19] xfs: improve the code that checks recovered bmap intent items
31 N Oct 13 Siddh Raman Pan (3.2K) │ ├─>[PATCH 5.15 v2 8/9] xfs: factor out stale buffer item completion
32 N Oct 13 Siddh Raman Pan (8.8K) │ ├─>[PATCH 5.15 v2 6/9] xfs: catch stale AGF/AGF metadata
33 N Oct 13 Siddh Raman Pan (5.6K) │ ├─>[PATCH 5.15 v2 5/9] xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
34 N Oct 13 Siddh Raman Pan (7.3K) │ ├─>[PATCH 5.15 v2 4/9] xfs: buffer pins need to hold a buffer reference
35 N Oct 13 Siddh Raman Pan (9.1K) │ ├─>[PATCH 5.15 v2 2/9] xfs: aborting inodes on shutdown may need buffer lock
36 N Oct 13 Siddh Raman Pan (8.5K) │ └─>[PATCH 6.1 v2 2/5] xfs: catch stale AGF/AGF metadata
37 N Oct 13 Siddh Raman Pan (1.6K) └─>[PATCH 6.12 v2 0/6] Backport of XFS umount hang fixes
38 N Oct 13 Siddh Raman Pan ( 12K) ├─>[PATCH 6.6 v2 5/5] xfs: fix unmount hang with unflushable inodes stuck in the AIL
39 N Oct 13 Siddh Raman Pan (5.6K) ├─>[PATCH 6.6 v2 3/5] xfs: rearrange code in xfs_buf_item.c
40 N Oct 13 Siddh Raman Pan (8.6K) ├─>[PATCH 6.6 v2 2/5] xfs: catch stale AGF/AGF metadata
41 N Oct 13 Siddh Raman Pan (5.6K) ├─>[PATCH 6.6 v2 1/5] xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
42 N Oct 13 Siddh Raman Pan (3.2K) ├─>[PATCH 6.12 v2 5/6] xfs: factor out stale buffer item completion
43 N Oct 13 Siddh Raman Pan ( 15K) ├─>[PATCH 6.12 v2 3/6] xfs: avoid dquot buffer pin deadlock
44 N Oct 13 Siddh Raman Pan (5.0K) ├─>[PATCH 6.12 v2 4/6] xfs: rearrange code in xfs_buf_item.c
45 N Oct 13 Siddh Raman Pan (3.2K) ├─>[PATCH 6.6 v2 4/5] xfs: factor out stale buffer item completion
46 N Oct 13 Siddh Raman Pan (8.0K) ├─>[PATCH 6.12 v2 2/6] xfs: catch stale AGF/AGF metadata
47 N Oct 13 Siddh Raman Pan ( 12K) ├─>[PATCH 6.12 v2 6/6] xfs: fix unmount hang with unflushable inodes stuck in the AIL
48 N Oct 13 Siddh Raman Pan (5.6K) └─>[PATCH 6.12 v2 1/6] xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
What would you do if you got something like this? :)
thanks,
greg k-h