linux-kernel - Re: [PATCH v14 067/138] mm/writeback: Add folio_start

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Message-ID: <1812885.1628630220@warthog.procyon.org.uk>
Date:   Tue, 10 Aug 2021 22:17:00 +0100
From:   David Howells <dhowells@...hat.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     dhowells@...hat.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v14 067/138] mm/writeback: Add folio_start_writeback()

Matthew Wilcox (Oracle) <willy@...radead.org> wrote:

> Rename set_page_writeback() to folio_start_writeback() to match
> folio_end_writeback().  Do not bother with wrappers that return void;
> callers are perfectly capable of ignoring return values.
> 
> Add wrappers for set_page_writeback(), set_page_writeback_keepwrite() and
> test_set_page_writeback() for compatibililty with existing filesystems.
> The main advantage of this patch is getting the statistics right,
> although it does eliminate a couple of calls to compound_head().
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> Reviewed-by: Christoph Hellwig <hch@....de>

Reviewed-by: David Howells <dhowells@...hat.com>