nilfs2: add local variable to cache the number of clean segments
authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Thu, 12 Nov 2009 18:41:55 +0000 (03:41 +0900)
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Fri, 20 Nov 2009 01:05:49 +0000 (10:05 +0900)
This makes it possible for sufile to get the number of clean segments
faster.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

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