Re: [PATCH v20 29/32] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic

[Kent Overstreet]

On Fri, May 19, 2023 at 08:40:44AM +0100, David Howells wrote:
> From: Christoph Hellwig <hch@xxxxxx>
> 
> Replace BIO_NO_PAGE_REF with a BIO_PAGE_REFFED flag that has the inverted
> meaning is only set when a page reference has been acquired that needs to
> be released by bio_release_pages().

What was the motivation for this patch?