linux-kernel - Re: [PATCH 34/75] mm/vmscan: Turn page_check_dirty_writeback() into folio_check_dirty

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Date:   Sat, 12 Feb 2022 01:49:21 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 34/75] mm/vmscan: Turn page_check_dirty_writeback() into
 folio_check_dirty_writeback()

On Sun, Feb 06, 2022 at 11:51:54PM -0800, Christoph Hellwig wrote:
> > -	mapping = page_mapping(page);
> > +	mapping = folio_mapping(folio);
> >  	if (mapping && mapping->a_ops->is_dirty_writeback)
> > -		mapping->a_ops->is_dirty_writeback(page, dirty, writeback);
> > +		mapping->a_ops->is_dirty_writeback(&folio->page, dirty, writeback);
> 
> This adds an overly long line.

Yeah, I'm planning on taking care of it in 5.19 by switching
is_dirty_writeback() to take a folio.

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