From: Li Zefan <lizf@cn.fujitsu.com>
Date: Wed, 20 Apr 2011 02:20:14 +0000 (+0800)
Subject: Btrfs: Make the code for reading/writing free space cache generic
X-Git-Tag: v3.0-rc1~38^2~12^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0414efae7989a2183fb2cc000ab285c4c2836a00;p=pandora-kernel.git

Btrfs: Make the code for reading/writing free space cache generic

Extract out block group specific code from lookup_free_space_inode(),
create_free_space_inode(), load_free_space_cache() and
btrfs_write_out_cache(), so the code can be used to read/write
free ino cache.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
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