From: Chao Yu <chao2.yu@samsung.com>
Date: Fri, 22 Nov 2013 07:48:54 +0000 (+0800)
Subject: f2fs: readahead contiguous pages for restore_node_summary
X-Git-Tag: v3.14-rc1~122^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9af0ff1c527ebb267d9a3b6aa8af93c5843d4390;p=pandora-kernel.git

f2fs: readahead contiguous pages for restore_node_summary

If cp has no CP_UMOUNT_FLAG, we will read all pages in whole node segment
one by one, it makes low performance. So let's merge contiguous pages and
readahead for better performance.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
[Jaegeuk Kim: adjust the new bio operations]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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