From: Yan, Zheng <zheng.yan@oracle.com>
Date: Thu, 12 Nov 2009 09:33:26 +0000 (+0000)
Subject: Btrfs: Avoid superfluous tree-log writeout
X-Git-Tag: v2.6.33-rc1~7^2~1^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8cef4e160d74920ad1725f58c89fd75ec4c4ac38;p=pandora-kernel.git

Btrfs: Avoid superfluous tree-log writeout

We allow two log transactions at a time, but use same flag
to mark dirty tree-log btree blocks. So we may flush dirty
blocks belonging to newer log transaction when committing a
log transaction. This patch fixes the issue by using two
flags to mark dirty tree-log btree blocks.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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