Re: [PATCH v2 04/16] iomap: add wrapper function iomap_bio_readpage()

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On Mon, Jun 16, 2025 at 5:49 AM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
> On Fri, Jun 13, 2025 at 02:46:29PM -0700, Joanne Koong wrote:
> > Add a wrapper function, iomap_bio_readpage(), around the bio readpage
> > logic so that callers that do not have CONFIG_BLOCK set may also use
> > iomap for buffered io.
>
> As far as I can tell nothing in this series actually uses the non-block
> read path, and I also don't really understand how the current split
> would facilitate that.  Can you explain a bit more where this is going?
>

Nothing in this series uses the iomap read path, but fuse might be
used in environments where CONFIG_BLOCK isn't set. What I'm trying to
do with this patch is move the logic in iomap readpage that's block /
bio dependent out of buffered-io.c and gate that behind a #ifdef
CONFIG_BLOCK check so that fuse can use buffered-io.c without breaking
compilation for non-CONFIG_BLOCK environments





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