linux-kernel - Re: [PATCH v7 5/8] block: Add BIO_PAGE

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Message-ID: <Y8vjFB3VhFYM3m+R@infradead.org>
Date:   Sat, 21 Jan 2023 05:05:24 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...nel.org>,
        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 v7 5/8] block: Add BIO_PAGE_PINNED

On Fri, Jan 20, 2023 at 05:55:53PM +0000, David Howells wrote:
> BIO_PAGE_PINNED to indicate that the pages in a bio were pinned (FOLL_PIN)
> and that the pin will need removing.

Just adding the flag without the infrastructure and users is a bit
silly.  See the link to my branch to see what I think is better split.