Re: [PATCH v2 00/14] folio support for sync I/O in RAID

[Li Nan]

在 2026/2/5 1:02, Yu Kuai 写道:
> Hi,
>
> 在 2026/1/28 15:56, linan666@xxxxxxxxxxxxxxx 写道:
> > From: Li Nan <linan122@xxxxxxxxxx>
> >
> > This patchset adds folio support to sync operations in raid1/10.
> > Previously, we used 16 * 4K pages for 64K sync I/O. With this change,
> > we'll use a single 64K folio instead. Using folios reduces
> > resync/recovery time by 20% on HDD.
> >
> > This is the first step towards full folio support in RAID. Going forward,
> > I will replace the remaining page-based usage with folio.
> >
> > The patchset was tested with mdadm. Additional fault injection stress tests
> > were run under file systems.
>
> For conclusion, I think you can send patch 1,8,9 first, they're not quite

Hi, kuai

Thanks for your review.

In handle_reshape_read_error(), if fix error in lbs before folio, we need
to consider 'idx' of page and offset in page, which make logical become 
complex. I prefer making the change after folio , how do you think?

> related to folio and can be applied. Then, please move patch 12,13 before patch 5

Patches 12,13 only make sense after folio support. Cleanup before folio
offers little benefit. I will merge them directly into patch 5.

> in the separate patch set, and looks like the number of patches can be small.
>
> BTW, there are still pages in other context, do you plan to convert them?

Yes, there are still many page usages in bitmap and RAID5. I will continue
folio support work with this series as a reference after it is applied.

--
Thanks,
Nan