From 61e0f2d0a5f2cddf7cd96fa8cb7fe53a1e5e325d Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Fri, 25 Jul 2014 15:47:23 -0700
Subject: [PATCH] f2fs: test before set/clear bits

If the bit is already set, we don't need to reset it, and vice versa.
Because we don't need to make the caches dirty for that.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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