linux-ext4 - Re: [PATCH v5 5/9] iomap/gfs2: Get page in page

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Date:   Sun, 8 Jan 2023 09:29:38 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Andreas Gruenbacher <agruenba@...hat.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        "Darrick J . Wong" <djwong@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Matthew Wilcox <willy@...radead.org>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, cluster-devel@...hat.com
Subject: Re: [PATCH v5 5/9] iomap/gfs2: Get page in page_prepare handler

> +	if (page_ops && page_ops->page_prepare)
> +		folio = page_ops->page_prepare(iter, pos, len);
> +	else
> +		folio = iomap_get_folio(iter, pos);
> +	if (IS_ERR(folio))
>  		return PTR_ERR(folio);

I'd love to have a iomap_get_folio helper for this sequence so that
we match iomap_put_folio.  That would require renaming the current
iomap_get_folio to __iomap_get_folio.

Otherwise this looks good:

Reviewed-by: Christoph Hellwig <hch@....de>