From 0bdb1db297ab36865a63ee722d35ff0a1f0ae522 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Fri, 19 Feb 2010 14:13:50 -0800
Subject: [PATCH] Btrfs: flush data on snapshot creation

Flush any delalloc extents when we create a snapshot, so that recently
written file data is always included in the snapshot.

A later commit will add the ability to snapshot without the flush, but
most people expect flushing.

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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