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Date: Sat, 16 Dec 2023 05:51:29 +0100
From: Christoph Hellwig <hch@lst.de>
To: Brian Foster <bfoster@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>, linux-mm@kvack.org,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jan Kara <jack@suse.com>, David Howells <dhowells@redhat.com>
Subject: Re: [PATCH 09/11] writeback: Factor writeback_iter_next() out of
 write_cache_pages()
Message-ID: <20231216045128.GA9679@lst.de>
References: <20231214132544.376574-1-hch@lst.de> <20231214132544.376574-10-hch@lst.de> <ZXxf4TB5YU8huiz1@bfoster>
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User-Agent: Mutt/1.5.17 (2007-11-01)

On Fri, Dec 15, 2023 at 09:17:05AM -0500, Brian Foster wrote:
> +	while ((folio = writeback_get_next(mapping, wbc)) != NULL) {
>  		wbc->done_index = folio->index;
>  		folio_lock(folio);
>  		if (likely(should_writeback_folio(mapping, wbc, folio)))
>  			break;
>  		folio_unlock(folio);
>  	}
>  
> +	if (folio)
> +		trace_wbc_writepage(wbc, inode_to_bdi(mapping->host));
>  	return folio;

I posted a very similar transformation in reply to willy's first posting
of the series :)  I guess that's 2:1 now and I might as well go ahead
and do something like that now :)