On 26/02/2021 23:10, David Sterba wrote:
On Fri, Feb 26, 2021 at 01:01:02PM +0800, Anand Jain wrote:
On 25/02/2021 12:39, Su Yue wrote:
While playing with seed device(misc/next and v5.11), lockdep complains
the following:
To reproduce:
dev1=/dev/sdb1
dev2=/dev/sdb2
umount /mnt
mkfs.btrfs -f $dev1
btrfstune -S 1 $dev1
mount $dev1 /mnt
btrfs device add $dev2 /mnt/ -f
umount /mnt
mount $dev2 /mnt
umount /mnt
In my understanding the commit 01d01caf19ff7c537527d352d169c4368375c0a1
(btrfs: move the chunk_mutex in btrfs_read_chunk_tree
fixed this bug in 5.9.
Could you please try this [1] patch,
[1]
https://patchwork.kernel.org/project/linux-btrfs/patch/20200717100525.320697-1-anand.j...@oracle.com/
Patch [1] still relevant as the device_list_mutex in clone_fs_devices()
is redundant. We could remove it as well.
So the fix 01d01caf19ff7c was not sufficient, the lockdep splat is
reproducible.
Yes indeed. Except for adding another reported by, the patch[1] applies
on misc-next as it is. Do you need a resend of the patch?
Thanks, Anand
