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. >
