Re: [RFC PATCH v4 1/8] iomap: zeroing needs to be pagecache aware

[Christoph Hellwig]

On Fri, May 31, 2024 at 07:03:58AM -0700, Darrick J. Wong wrote:
> > +			/*
> > +			 * XXX: It would be nice if we could get the offset of
> > +			 * the next entry in the pagecache so that we don't have
> > +			 * to iterate one page at a time here.
> > +			 */
> > +			offset = offset_in_page(pos);
> > +			if (bytes > PAGE_SIZE - offset)
> > +				bytes = PAGE_SIZE - offset;
> 
> Why is it PAGE_SIZE here and not folio_size() like below?
> 
> (I know you're just copying the existing code; I'm merely wondering if
> this is some minor bug.)

See the comment just above :)