From: Changman Lee <cm224.lee@samsung.com>
Date: Mon, 25 Feb 2013 08:38:02 +0000 (+0900)
Subject: f2fs: fix overflow when calculating utilization on 32-bit
X-Git-Tag: v3.10-rc1~45^2~67
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12fc760fd632a96f49e96f519c4aed4eb279bb61;p=pandora-kernel.git

f2fs: fix overflow when calculating utilization on 32-bit

Use div_u64 to fix overflow when calculating utilization.
*long int* is 4-bytes on 32-bit so (user blocks * 100) might be
overflow if disk size is over e.g. 512GB.

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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