From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Wed, 16 May 2012 15:18:50 +0000 (+0200)
Subject: Btrfs: add tree modification log functions
X-Git-Tag: v3.5-rc1~17^2^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd989ba359f2acb8bc5f5490e19010fc0a6f8356;p=pandora-kernel.git

Btrfs: add tree modification log functions

The tree mod log will log modifications made fs-tree nodes. Most
modifications are done by autobalance of the tree. Such changes are recorded
as long as a block entry exists. When released, the log is cleaned.

With the tree modification log, it's possible to reconstruct a consistent
old state of the tree. This is required to do backref walking on a busy
file system.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
---

Reading git-diff-tree failed