From 6878ea72a5d1aa6caae86449975a50b7fe9abed5 Mon Sep 17 00:00:00 2001
From: Benjamin LaHaise <bcrl@kvack.org>
Date: Wed, 31 Jul 2013 10:34:18 -0400
Subject: [PATCH] aio: be defensive to ensure request batching is non-zero
 instead of BUG_ON()

In the event that an overflow/underflow occurs while calculating req_batch,
clamp the minimum at 1 request instead of doing a BUG_ON().

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