From 0c45355fc7c48c82db151bf0e7ca305d513e639e Mon Sep 17 00:00:00 2001
From: Benjamin LaHaise <bcrl@kvack.org>
Date: Wed, 17 Jul 2013 09:34:24 -0400
Subject: [PATCH] aio: fix build when migration is disabled

When "fs/aio: Add support to aio ring pages migration" was applied, it
broke the build when CONFIG_MIGRATION was disabled.  Wrap the migration
code with a test for CONFIG_MIGRATION to fix this and save a few bytes
when migration is disabled.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
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