From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Sun, 20 May 2012 13:43:53 +0000 (+0200)
Subject: Btrfs: tree mod log sanity checks in join_transaction
X-Git-Tag: v3.5-rc1~17^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20b297d620cd1bb94127942bbb3702fb7b1030b2;p=pandora-kernel.git

Btrfs: tree mod log sanity checks in join_transaction

When a fresh transaction begins, the tree mod log must be clean. Users of
the tree modification log must ensure they never span across transaction
boundaries.

We reset the sequence to 0 in this safe situation to make absolutely sure
overflow can't happen.

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