linux-kernel - Re: [PATCH] ARM:mm: fix kmap_atomic_to

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Message-ID: <20151006192836.GX21513@n2100.arm.linux.org.uk>
Date:	Tue, 6 Oct 2015 20:28:36 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Chanho Min <chanho.min@....com>, nico@...xnic.net
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Jongsung Kim <neidhard.kim@....com>,
	Gunho Lee <gunho.lee@....com>
Subject: Re: [PATCH] ARM:mm: fix kmap_atomic_to_page

On Tue, Oct 06, 2015 at 08:09:33PM +0900, Chanho Min wrote:
> Since kmap_atomic returns the pkmap address without a new mapping to
> fixmap for the page that is already mapped by kmap, It should be
> considered for the pkmap address in kmap_atomic_to_page.

What's the reasoning behind this change, given that I can find lots of
definitions of kmap_atomic_to_page() in the kernel, but not a single
user of this.

If there's no users, should we be deleting this code?

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