Re: [PATCH v11 26/33] mm/writeback: Add folio_wait_writeback()

[David Howells <dhowells@xxxxxxxxxx>]

Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> wrote:

> +	struct page *page = &folio->page;

Isn't that a layering violation?  Should it be something like:

	struct page *page = folio_head();

or:

	struct page *page = folio_subpage(0);

maybe?