From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Wed, 13 Mar 2013 08:45:15 +0000 (+0900)
Subject: f2fs: fix to unlock node page when it was truncated
X-Git-Tag: v3.10-rc1~45^2~66
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12faafe45477244bc32e2c58f74f7305cc7e84fa;p=pandora-kernel.git

f2fs: fix to unlock node page when it was truncated

If the node page was truncated, its block address became zero.
This means that we don't need to write the node page, but have to unlock
NODE_WRITE, decrease the number of dirty node pages, and then unlock_page
before returning the f2fs_write_node_page with zero.

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