From 160544075f2a4028209721723a51f16add7b08b9 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 1 Jun 2015 16:22:03 +0800
Subject: [PATCH] crypto: scatterwalk - Hide PageSlab call to optimise away
 flush_dcache_page

On architectures where flush_dcache_page is not needed, we will
end up generating all the code up to the PageSlab call.  This is
because PageSlab operates on a volatile pointer and thus cannot
be optimised away.

This patch works around this by checking whether flush_dcache_page
is needed before we call PageSlab which then allows PageSlab to be
compiled awy.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Reading git-format-patch failed