Re: [PATCH 3/7] iomap: add bioset in iomap_read_folio_ops for filesystems to use own bioset

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On Thu, Mar 13, 2025 at 01:53:59PM +0000, Matthew Wilcox wrote:
> On Mon, Feb 03, 2025 at 10:43:07AM +0100, Christoph Hellwig wrote:
> > Allocate the bio from the bioset provided in iomap_read_folio_ops.
> > If no bioset is provided, fs_bio_set is used which is the standard
> > bioset for filesystems.
> 
> It feels weird to have an 'ops' that contains a bioset rather than a
> function pointer.  Is there a better name we could be using?  ctx seems
> wrong because it's not a per-op struct.

As Darrick pointed out ops commonly have non-method static fields of
some kind.  After at all it still mostly is about ops, the bio_set
pointer just avoids having to add a special alloc indirection that
will all end up using the same code just with a different bio_set.





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