Hi,
在 2024/02/27 22:36, Christoph Hellwig 写道:
On Mon, Feb 26, 2024 at 07:38:17PM +0800, Yu Kuai wrote:
Any reason to use blk_mq_freeze/unfreeze_queue ? I don't think this is
meaningful for raid, this only wait for IO submission, not IO done.
raid should already handle concurrent IO with reshape, so I think this
can just be removed.
We can't just change limits under the driver if I/Os are being sumitted.
That is one of the points of the whole queue limits exercises.
Agree with this, it's just these apis can't gurantee this in raid, there
could still be IO inflight, perhaps you can use:
mddev_suspend(mddev)
...
mddev_resume(mddev)
Thanks,
Kuai
.
