Re: [RFC PATCH 2/2] mm: introduce budgt control in readahead

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On Fri, May 10, 2024 at 10:43:20AM +0800, Zhaoyang Huang wrote:
> Thanks for the prompt. I did some basic research on soft RAID and
> wonder if applying the bps limit on /dev/md0 like below could make
> this work.

No.  Look at btrfs' raid support, for example.  it doesn't use md0.

> I didn't find information about 'RAID internally'. Could we set the
> limit on the root device(the one used for mount) to manage the whole
> partition without caring about where the bio finally goes? Or ask the
> user to decide if to use by making sure the device they apply will not
> do RAID?

No.




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