linux-kernel - Re: [PATCH v5 04/38] mm: Add folio_flush

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Date:   Tue, 11 Jul 2023 03:33:42 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Mike Rapoport <rppt@...nel.org>,
        Anshuman Khandual <anshuman.khandual@....com>
Subject: Re: [PATCH v5 04/38] mm: Add folio_flush_mapping()

On Mon, Jul 10, 2023 at 04:17:27PM -0700, Andrew Morton wrote:
> On Mon, 10 Jul 2023 21:43:05 +0100 "Matthew Wilcox (Oracle)" <willy@...radead.org> wrote:
> > +static inline struct address_space *folio_flush_mapping(struct folio *folio)
> > +{
> > +	if (unlikely(folio_test_swapcache(folio)))
> > +		return NULL;
> > +
> > +	return folio_mapping(folio);
> > +}
> 
> The name makes it sound like it flushes something.  Wouldn't
> folio_flushable_mapping() be clearer?

Yes; I wasn't a big fan of the name, but I wasn't a fan of perpetuating
the page_file_mapping / page_mapping_file confusio either.  Do you want
me to send you a set of fixup patches, or will you run them through sed
-i ?  ;-)