linux-kernel - Re: [PATCH v2 25/46] mm/writeback: Add folio_start

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Message-ID: <YNTQA3JVoIdHWxyT@casper.infradead.org>
Date:   Thu, 24 Jun 2021 19:33:39 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 25/46] mm/writeback: Add folio_start_writeback()

On Wed, Jun 23, 2021 at 11:18:04AM +0200, Christoph Hellwig wrote:
> > +static inline void set_page_writeback_keepwrite(struct page *page)
> >  {
> > +	folio_start_writeback_keepwrite(page_folio(page));
> >  }
> >  
> > +static inline bool test_set_page_writeback(struct page *page)
> >  {
> > +	return set_page_writeback(page);
> >  }
> 
> Shouldn't these be in folio-compat.c as well?

Thought about it.  We only have one caller of
set_page_writeback_keepwrite(), so it may as well get inlined there.
And test_set_page_writeback() is just a renaming ... I'd rather
replace the callers of test_set_page_writeback() with calls to
the new set_page_writeback() than move it into folio-compat.

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