From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Fri, 1 May 2015 00:00:33 +0000 (-0700)
Subject: f2fs: split find_data_page according to specific purposes
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~156^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43f3eae1d3b1de6a4f7e39ef9c363ec6f8b9c8d4;p=pandora-kernel.git

f2fs: split find_data_page according to specific purposes

This patch splits find_data_page as follows.

1. f2fs_gc
 - use get_read_data_page() with read only

2. find_in_level
 - use find_data_page without locked page

3. truncate_partial_page
 - In the case cache_only mode, just drop cached page.
 - Ohterwise, use get_lock_data_page() and guarantee to truncate

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