Hi,
在 2025/08/26 15:55, Christoph Hellwig 写道:
On Tue, Aug 26, 2025 at 09:13:41AM +0800, Yu Kuai wrote:
The NULL return should only happen for REQ_NOWAIT here, so maybe
give R10BIO_Returned a more descriptive name? Also please document
the flag in the header.
And also atomic write here, if bio has to split due to badblocks here.
The flag is refer to raid1. I can add cocument for both raid1 and raid10
in this case.
Umm, that's actually a red flag. If a device guarantees atomic behavior
it can't just fail it. So I think REQ_ATOMIC should be disallowed
for md raid with bad block tracking.
I agree that do not look good, however, John explained while adding this
that user should retry and fallback without REQ_ATOMIC to make things
work as usual.
Thanks,
Kuai
.
