linux-kernel - Re: [PATCH v9 5/8] block: Replace BIO_NO_PAGE_REF with BIO_PAGE

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Date:   Tue, 24 Jan 2023 21:17:57 +0000
From:   David Howells <dhowells@...hat.com>
To:     John Hubbard <jhubbard@...dia.com>,
        Christoph Hellwig <hch@...radead.org>
Cc:     dhowells@...hat.com, Al Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, "Jan Kara" <jack@...e.cz>,
        Jeff Layton <jlayton@...nel.org>,
        David Hildenbrand <david@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, "Christoph Hellwig" <hch@....de>
Subject: Re: [PATCH v9 5/8] block: Replace BIO_NO_PAGE_REF with BIO_PAGE_REFFED with inverted logic

John Hubbard <jhubbard@...dia.com> wrote:

> > +	/* for now require references for all pages */
> 
> Maybe just delete this comment?

Christoph added that.  Presumably because this really should move to pinning
or be replaced with iomap, but it's not straightforward either way.  Christoph?

David