nilfs2: add update functions of virtual block address to dat
authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Sat, 15 Aug 2009 08:22:13 +0000 (17:22 +0900)
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Mon, 14 Sep 2009 09:27:15 +0000 (18:27 +0900)
This is a preparation for the successive cleanup ("nilfs2: allow btree
to directly call dat operations").

This adds functions bundling a few operations to change an entry of
virtual block address on the dat file.

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

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