linux-kernel - Re: [PATCH 01/12] writeback: Factor out writeback

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Date:   Mon, 26 Jun 2023 21:05:18 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jan Kara <jack@...e.com>,
        David Howells <dhowells@...hat.com>
Subject: Re: [PATCH 01/12] writeback: Factor out writeback_finish()

On Mon, Jun 26, 2023 at 06:35:10PM +0100, Matthew Wilcox (Oracle) wrote:
> +	struct folio_batch fbatch;
> +	pgoff_t done_index;
> +	int err;
> +

I think this really needs a comment that it should only be used for
the writeback iterator.  In fact this whole structure could use a lot
more comments on what should / can be set by the caller, and what is
internal.

> +	unsigned range_whole:1;		/* entire file */

Same here.