linux-kernel - Re: [RFC PATCH v2 2/3] mm: Provide a function to get an additional pin on a page

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Message-ID: <ZHBrwrRiY4/WTuYe@infradead.org>
Date:   Fri, 26 May 2023 01:20:18 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     David Howells <dhowells@...hat.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        David Hildenbrand <david@...hat.com>,
        Jens Axboe <axboe@...nel.dk>,
        Al Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...nel.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Hillf Danton <hdanton@...a.com>,
        Christian Brauner <brauner@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH v2 2/3] mm: Provide a function to get an additional
 pin on a page

On Thu, May 25, 2023 at 11:39:52PM +0100, David Howells wrote:
> +/**
> + * page_get_additional_pin - Try to get an additional pin on a pinned page
> + * @page: The page to be pinned
> + *
> + * Get an additional pin on a page we already have a pin on.  Makes no change
> + * if the page is the zero_page.
> + */
> +void page_get_additional_pin(struct page *page)

page_get_additional_pin seems like an odd name, mixing the get and
pin terminologies.  What about repin_page?  Or move to a folio interface
from the start can call it folio_repin?