Hi,
在 2025/08/18 14:18, Christoph Hellwig 写道:
On Mon, Aug 18, 2025 at 02:14:06PM +0800, Yu Kuai wrote:
Please take a look at the first patch, nothing special, the new flag
will be passed to the top device.
But passing it on will be incorrect in many cases, e.g. for any
write caching solution. And that is a much more common use case
than stacking different raid level using block layer stacking.
I don't quite understand why it's incorrect for write caching solution,
can you please explain in details? AFAIK, the behaviour is only changed
for the first mdraid device is the stacking chain.
Thanks,
Kuai
.
