Re: [PATCH 02/12] iomap: Introduce iomap_read_folio_ops

[Matthew Wilcox]

On Fri, Oct 04, 2024 at 04:04:29PM -0400, Goldwyn Rodrigues wrote:
> iomap_read_folio_ops provide additional functions to allocate or submit
> the bio. Filesystems such as btrfs have additional operations with bios
> such as verifying data checksums. Creating a bio submission hook allows
> the filesystem to process and verify the bio.

But surely you're going to need something similar for writeback too?
So why go to all this trouble to add a new kind of ops instead of making
it part of iomap_ops or iomap_folio_ops?