From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Thu, 26 Aug 2010 15:23:02 +0000 (+0900)
Subject: nilfs2: make snapshots in checkpoint tree exportable
X-Git-Tag: v2.6.37-rc1~150^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e656fd518784b49453f60c5f78b78703bc85cb2;p=pandora-kernel.git

nilfs2: make snapshots in checkpoint tree exportable

The previous export operations cannot handle multiple versions of
a filesystem if they belong to the same sb instance.

This adds a new type of file handle and extends export operations so
that they can get the inode specified by a checkpoint number as well
as an inode number and a generation number.

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