[Devel] [PATCH hci-8.1 v2 1/3] drivers/md/dm-qcow2: treat images of a read-only table as read-only

Konstantin Khorenko khorenko at virtuozzo.com
Tue Nov 3 19:30:57 MSK 2026


Applying with this fix on my side:

- Reviewed-by: Andrey Zhadchenko, from the v1 thread.

On 10/29/26 15:43, Alexander Ivanov wrote:
> Consider an image writable only if both its file and the table are
> writable, and use this check for the header update, the tail padding
> and the short read near EOF as well. merge_backward on a read-only
> table now fails with -EACCES.

Reviewed-by: Konstantin Khorenko <khorenko at virtuozzo.com>

-- 
Konstantin Khorenko,
Virtuozzo Linux Kernel Team



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