[Devel] [PATCH hci-8.1 1/2] dm-ploop: fix a failed merge failing every later merge on the host

[no-reply at sashiko.virtuozzo.com]

> From: Denis V. Lunev <den at openvz.org>
> 
> ploop_process_merge_latest_snapshot() collects the status of its fake
> merge pios in a function-local static. It is never reset and it is
> shared by every ploop device, so once a single pio fails, every later
> merge on any device stops after its first pio and returns that old
> error, until the module is reloaded. A failure on one device also
> aborts a merge running on another.
> 
> Keep the status on the stack. The pios carry a pointer to it, so the
> function must not return while one of them is outstanding: every exit
> already waits for service_pios to drain.
> 
> Fixes: 6ddad5a4d226 ("dm-ploop: Add ploop target driver")
> 
> Signed-off-by: Denis V. Lunev <den at openvz.org>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.vzint.dev/#/patchset/20261028132104.2885097-1-den@openvz.org?part=1