From bbc77aa7fb72e616edcb1b165c293e47c6d4d0cf Mon Sep 17 00:00:00 2001
From: Kent Overstreet <koverstreet@google.com>
Date: Tue, 28 May 2013 21:53:19 -0700
Subject: [PATCH] bcache: fix a spurious gcc complaint, use scnprintf

An old version of gcc was complaining about using a const int as the
size of a stack allocated array. Which should be fine - but using
ARRAY_SIZE() is better, anyways.

Also, refactor the code to use scnprintf().

Signed-off-by: Kent Overstreet <koverstreet@google.com>
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