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Date:   Fri, 1 May 2020 02:49:54 +0100
From:   Al Viro <viro@zeniv.linux.org.uk>
To:     Matthew Wilcox <willy@infradead.org>
Cc:     Guoqing Jiang <guoqing.jiang@cloud.ionos.com>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
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        Andrew Morton <akpm@linux-foundation.org>,
        "Darrick J. Wong" <darrick.wong@oracle.com>,
        William Kucharski <william.kucharski@oracle.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Andreas Gruenbacher <agruenba@redhat.com>,
        Yang Shi <yang.shi@linux.alibaba.com>,
        Yafang Shao <laoar.shao@gmail.com>, Song Liu <song@kernel.org>,
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Subject: Re: [RFC PATCH V2 1/9] include/linux/pagemap.h: introduce
 attach/clear_page_private
Message-ID: <20200501014954.GC23230@ZenIV.linux.org.uk>
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 <20200430221338.GY29705@bombadil.infradead.org>
 <20200501014229.GB23230@ZenIV.linux.org.uk>
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On Fri, May 01, 2020 at 02:42:29AM +0100, Al Viro wrote:
> On Thu, Apr 30, 2020 at 03:13:38PM -0700, Matthew Wilcox wrote:
> 
> > > +/**
> > > + * clear_page_private - clear page's private field and PG_private.
> > > + * @page: page to be cleared.
> > > + *
> > > + * The counterpart function of attach_page_private.
> > > + * Return: private data of page or NULL if page doesn't have private data.
> > > + */
> > 
> > Seems to me that the opposite of "attach" is "detach", not "clear".
> 
> Or "remove", perhaps...

Actually, "detach" is better - neither "clear" nor "remove" imply "... and give
me what used to be attached there", as this thing is doing.