Re: [PATCH v7 5/8] nbd: skip queue freeze when setting size at device startup

在 2026/8/5 14:58, Yang Erkun 写道:

> Commit 242a49e5c878 ("nbd: freeze the queue for queue limits updates")
> added the freeze to keep in-flight commands from seeing
> torn queue_limits.  But at startup the capacity is still 0
> (invalidate_disk cleared it) and the write cache is off (the previous
> patch cleared it on disconnect, and nbd_set_size sets it back only after
> the commit), so submit_bio_noacct() rejects any bio before it reaches
> the driver and no I/O is in flight.  Drop the freeze by checking
> capacity and write cache state in nbd_set_size.
>
> Signed-off-by: Yang Erkun<[email protected]>
> ---
>   drivers/block/nbd.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
Reviewed-by: Yu Kuai <[email protected]>

-- 
Thanks,
Kuai