From 254a2d14fa77ac8a1b64f6171ec5f717f0753b53 Mon Sep 17 00:00:00 2001
From: Liu Bo <bo.li.liu@oracle.com>
Date: Wed, 17 Sep 2014 21:36:41 +0800
Subject: [PATCH] Btrfs: fix wrong parse of extent map's tracepoint

The tracepoint of extent map doesn't parse @flag correctly, we set @flag via
set_bit(), so we need to parse it on a bit bias.

Also add the missing flag, EXTENT_FLAG_FS_MAPPING.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
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